| Station Name | Months | Country | Earliest | Most Recent |
|---|
| MA'AN AIRPORT | 628 | Jordan | Jan 1961 | Oct 2013 |
| MA-AO BAGO NEG.OCC. | 141 | Philippines | Feb 1964 | Dec 1975 |
| MA-JIANG | 9 | China | Jan 1963 | Mar 1997 |
| MA-TANG | 302 | China | Jan 1973 | Feb 2000 |
| MAAK | 10 | Russia | Nov 1970 | Jul 1976 |
| MAALAHTI STROMMINGSBADAN | 186 | Finland | Sep 1997 | Aug 2013 |
| MAANINKA HALOLA | 652 | Finland | May 1959 | Oct 2013 |
| MAAP | 199 | Federated States of Micronesia | Jun 1991 | Apr 2012 |
| MAARIANHAMINA | 132 | Finland | Jan 1961 | Dec 1981 |
| MAARIK | 97 | Saudi Arabia | Mar 1963 | Dec 1986 |
| MAASIN | 150 | Philippines | Mar 1986 | Oct 2013 |
| MAASTRICHT-1 | 564 | Netherlands | Jan 1906 | Dec 1952 |
| MAATSUYKER ISLAND LIGHTHOUSE | 924 | Australia | Jan 1936 | Oct 2013 |
| MABALI | 315 | Zaire | Jan 1954 | May 1986 |
| MABARUMA | 110 | Guyana | Jan 1971 | Dec 1980 |
| MABLETON 1 N | 153 | United States | Oct 1999 | Oct 2013 |
| MABOU | 210 | Canada | Sep 1986 | May 2006 |
| MAC CRENSHAW MEM | 79 | United States | Sep 2006 | Oct 2013 |
| MAC LEOD HARBOR | 75 | United States | Mar 1972 | Jul 1978 |
| MACACHIN, ARGENTINA | 360 | Argentina | Jan 1931 | Dec 1960 |
| MACAE AERO | 161 | Brazil | Mar 1990 | Oct 2013 |
| MACAPA | 419 | Brazil | Jan 1973 | Oct 2013 |
| MACAPA | 102 | Brazil | Jan 1991 | Dec 2000 |
| MACAPA-AEROPORTO | 134 | Brazil | Sep 1943 | Sep 1997 |
| MACARA | 120 | Ecuador | Jan 1961 | Dec 1970 |
| MACARA/J.M.VELASCOI | 78 | Ecuador | Feb 1975 | Sep 1982 |
| MACAS | 8 | Ecuador | Jan 1934 | Aug 1934 |
| MACDIARMID | 100 | Canada | Jan 1948 | Oct 1969 |
| MACDILL AFB/TAMPA | 843 | United States | May 1941 | Oct 2013 |
| MACDONALD A | 91 | Canada | Oct 1951 | Apr 1959 |
| MACDONALD COLLEGE | 816 | Canada | May 1906 | Mar 1976 |
| MACDOWALL,SA | 282 | Canada | Oct 1915 | Aug 2003 |
| MACE HEAD AIR SAMPLE STN | 47 | Ireland | Nov 2009 | Oct 2013 |
| MACEDON FORESTRY SEE 58 | 809 | Australia | Jan 1887 | Mar 1994 |
| MACEIO | 150 | Brazil | Jan 1979 | Sep 2013 |
| MACEIO | 111 | Brazil | Apr 1924 | Aug 1934 |
| MACEIO (AEROPORTO) | 484 | Brazil | Jan 1973 | Oct 2013 |
| MACENTA GUINEA AFRICA | 330 | Guinea | Jan 1945 | May 1994 |
| MACERATA | 267 | Italy | Jan 1953 | Apr 1975 |
| MACGREGOR | 165 | Canada | Jun 1973 | Jun 1996 |
| MACHA | 239 | Russia | Jan 1961 | Oct 2013 |
| MACHADO | 4 | Brazil | Nov 2006 | Mar 2007 |
| MACHALA | 119 | Ecuador | Nov 1929 | Jun 1941 |
| MACHALA AEROPUERTO | 72 | Ecuador | Oct 1977 | Oct 1988 |
| MACHALA MANUEL SERRANO | 120 | Ecuador | Jan 1991 | Dec 2000 |
| MACHENG | 657 | China | Jan 1959 | Oct 2013 |
| MACHILIPATNAM/FRANCHPET | 869 | India | Jan 1941 | Oct 2013 |
| MACHRIHANISH | 458 | United Kingdom | Jan 1973 | Oct 2013 |
| MACKAR INLET | 51 | Canada | Jan 1973 | Jun 1977 |
| MACKAR INLET,N.W.T. | 410 | Canada | Nov 1957 | May 1992 |
| MACKAY 4 NW | 259 | United States | Aug 1965 | Oct 1988 |
| MACKAY AERO | 324 | Australia | May 1950 | Oct 2013 |
| MACKAY AIRPORT /MO1943-1945 | 8 | Australia | Jan 1959 | Sep 1959 |
| MACKAY LOST RIVER RS | 1229 | United States | Jan 1908 | Sep 2013 |
| MACKAY M.O. (MOUNT BASSET | 1471 | Australia | Nov 1889 | Oct 2013 |
| MACKAY SUGAR MILL STATION | 953 | Australia | Jan 1908 | Feb 1994 |
| MACKENZIE AIRPORT | 512 | Canada | Mar 1971 | Oct 2013 |
| MACKENZIE TOWNSITE | 61 | Canada | Nov 1994 | Oct 2013 |
| MACKINAC ISLAND AP | 418 | United States | May 1900 | Dec 2005 |
| MACKINACK ISLAND | 624 | United States | Oct 1956 | Oct 2013 |
| MACKINAW 1N | 27 | United States | Nov 1942 | Mar 1945 |
| MACKINAW CITY LIGHT HOUSE | 921 | United States | Jun 1896 | Oct 2013 |
| MACKLIN,SA | 599 | Canada | Jul 1918 | Jun 1988 |
| MACKS CREEK MISSOURI | 125 | United States | Mar 2003 | Oct 2013 |
| MACKSVILLE 8 NNE | 426 | United States | Jun 1893 | Mar 1931 |
| MACMILLAN PASS /NWT. | 155 | Canada | Jan 2000 | Oct 2013 |
| MACOMB MUNI AP | 184 | United States | Aug 1902 | Oct 2013 |
| MACOMER SA' CRABARZA | 300 | Italy | Jan 1952 | Oct 2006 |
| MACON | 466 | France | Jan 1973 | Oct 2013 |
| MACON 2 NE | 1311 | United States | May 1891 | Oct 2013 |
| MACON CO AP | 109 | United States | Jun 2004 | Oct 2013 |
| MACON GEORGIA/SMART APT WBAS | 10 | United States | Jan 1948 | Nov 1948 |
| MACON MIDDLE GA REGIONAL AP | 1590 | United States | Dec 1869 | Oct 2013 |
| MACON WB AIRPORT | 261 | United States | Jan 1930 | Oct 1953 |
| MACQUARIE PARK (WILLANDRA VILL | 181 | Australia | Feb 1971 | Oct 1995 |
| MACTAN INT'L.AIRPORT,CEB | 541 | Philippines | Aug 1965 | Oct 2013 |
| MACTAQUAC PROV PARK | 344 | Canada | Nov 1974 | Oct 2013 |
| MACUSPANA | 448 | Mexico | Sep 1948 | Nov 1998 |
| MACUVILLE (ME | 478 | South Africa | Jan 1960 | Apr 2002 |
| MAD RIVER CALIFORNIA | 157 | United States | Oct 1999 | Oct 2013 |
| MAD RIVER RANGER STN | 17 | United States | Jun 1983 | Aug 1986 |
| MADANG (AIRPORT M.O.) | 662 | Papua New Guinea | Dec 1944 | May 2013 |
| MADARIPUR | 120 | Bangladesh | Jan 1991 | Dec 2000 |
| MADAUN | 89 | Russia | Jan 1969 | Oct 2013 |
| MADAWASKA,ON | 989 | Canada | Sep 1915 | Sep 2000 |
| MADDEN | 285 | Canada | Dec 1981 | Mar 2008 |
| MADDEN DAM | 120 | Panama | Jan 1951 | Dec 1960 |
| MADDEN DAM PANAMA/MADDEN FLD | 25 | Panama | Aug 1942 | Oct 1944 |
| MADDOCK | 685 | United States | Jan 1915 | Nov 1972 |
| MADEIRA | 113 | Portugal | Jun 2004 | Oct 2013 |
| MADELINE | 218 | United States | Jan 1909 | Dec 1933 |
| MADELINE ISLAND | 791 | United States | Jul 1944 | Oct 2013 |
| MADERA | 977 | United States | Jan 1928 | Sep 2013 |
| MADERA | 227 | Mexico | Nov 1927 | Nov 1993 |
| MADERA 2 SE | 471 | United States | Dec 1949 | Jan 1990 |
| MADERA MUNI AP | 181 | United States | Sep 1998 | Oct 2013 |
| MADHAIGANJ INDIA | 6 | India | Jan 1944 | Nov 1944 |
| MADILL | 894 | United States | Jan 1937 | Oct 2013 |
| MADILL 11WSW MESONET | 51 | United States | Mar 2009 | Sep 2013 |
| MADISON | 1325 | United States | Dec 1893 | Sep 2013 |
| MADISON | 1264 | United States | Jan 1892 | Oct 2013 |
| MADISON | 919 | United States | Feb 1894 | Dec 1974 |
| MADISON | 189 | United States | Feb 1900 | Jan 1919 |
| MADISON | 118 | United States | Oct 1891 | Sep 1901 |
| MADISON | 95 | United States | Mar 1920 | Oct 1929 |
| MADISON | 23 | United States | Mar 1898 | Jul 1900 |
| MADISON / RICHMOND | 31 | United States | Jan 2011 | Jul 2013 |
| MADISON 1 NW | 102 | United States | Mar 2005 | Oct 2013 |
| MADISON 1 WNW | 258 | United States | Jul 1940 | Apr 1962 |
| MADISON 2 SE | 590 | United States | Oct 1961 | Oct 2013 |
| MADISON 2 W | 1377 | United States | Dec 1884 | Feb 2012 |
| MADISON 3 NNW | 1045 | United States | Apr 1894 | Oct 2013 |
| MADISON 4 ESE | 133 | United States | Jan 1996 | Oct 2013 |
| MADISON BARRACKS | 95 | United States | May 1890 | Dec 1899 |
| MADISON BUTTE | 265 | United States | Jul 1990 | Oct 2013 |
| MADISON LAC AP | 10 | United States | Jan 2005 | Dec 2005 |
| MADISON MUNI | 52 | United States | Apr 2009 | Oct 2013 |
| MADISON PLATEAU | 288 | United States | Nov 1988 | Oct 2013 |
| MADISON SEWAGE PLANT | 1366 | United States | Apr 1893 | May 2011 |
| MADISON SEWAGE PLANT | 845 | United States | May 1940 | Oct 2013 |
| MADISON-4N | 1058 | United States | Oct 1889 | Dec 1990 |
| MADISON-SEWAGE-PLANT | 1162 | United States | Nov 1854 | Dec 1990 |
| MADISON/DANE COUNTY REGIONAL WI. | 1738 | United States | Jan 1869 | Oct 2013 |
| MADISONVILLE | 801 | United States | Sep 1942 | Oct 2013 |
| MADISONVILLE | 765 | United States | Dec 1948 | Oct 2013 |
| MADISONVILLE MUNI | 20 | United States | Nov 2011 | Jul 2013 |
| MADIUN/ISWAHYUD AFB | 222 | Indonesia | Jan 1959 | Dec 1979 |
| MADLEY | 168 | United Kingdom | Jul 1984 | Feb 2001 |
| MADOC | 146 | Canada | Oct 1904 | Nov 2006 |
| MADOI | 726 | China | Jan 1953 | Oct 2013 |
| MADONA | 57 | Latvia | Mar 1973 | Oct 2013 |
| MADRAS | 1082 | United States | Nov 1910 | Oct 2013 |
| MADRAS 2 N | 522 | United States | Mar 1952 | Jul 2013 |
| MADRAS OREGON AAF | 11 | United States | May 1943 | Apr 1944 |
| MADRAY SPRINGS 2WNW | 7 | United States | Mar 2004 | Nov 2004 |
| MADRID | 1282 | United States | Jan 1893 | Oct 2013 |
| MADRID | 35 | United States | Apr 1895 | Dec 1941 |
| MADRID - RETIRO | 1911 | Spain | Jan 1840 | Aug 2012 |
| MADRID/BARAJAS RS | 754 | Spain | Jan 1951 | Oct 2013 |
| MADRID/CUATRO VIENTOS | 463 | Spain | Jan 1974 | Oct 2013 |
| MADRID/CUATROVIENTOS | 696 | Spain | May 1945 | Aug 2012 |
| MADRID/GETAFE | 701 | Spain | Jan 1951 | Oct 2013 |
| MADRID/TORREJON | 672 | Spain | Oct 1957 | Oct 2013 |
| MADRUSHKAT | 111 | Tajikistan | Dec 1975 | Oct 2013 |
| MADURA STATION | 26 | Australia | May 1967 | Oct 1971 |
| MAE HONG SON | 676 | Thailand | Nov 1941 | Oct 2013 |
| MAE SARIANG | 749 | Thailand | Aug 1940 | Oct 2013 |
| MAE SOT | 788 | Thailand | Sep 1936 | Oct 2013 |
| MAEBASHI | 1401 | Japan | Jan 1897 | Oct 2013 |
| MAESANRI | 96 | Korea, South | Dec 1993 | Jul 2005 |
| MAESER 9 NW | 317 | United States | May 1983 | Nov 2009 |
| MAEVATANANA | 9 | Madagascar | Nov 1985 | Apr 1988 |
| MAFEKING | 263 | Canada | Nov 1989 | Sep 2013 |
| MAFFRA FORESTRY OFFICE | 717 | Australia | Jan 1903 | Aug 1975 |
| MAFIKENG WO | 322 | South Africa | Jan 1951 | Oct 2013 |
| MAFRAQ | 376 | Jordan | Dec 1953 | Oct 2013 |
| MAGADAN NW | 70 | Russia | Jul 1961 | Jul 1976 |
| MAGANGUE/BARACOA | 22 | Colombia | Feb 1970 | Sep 1977 |
| MAGARIA | 380 | Niger | Jul 1980 | Oct 2013 |
| MAGDAGACI | 547 | Russia | Jan 1948 | Oct 2013 |
| MAGDALENA | 478 | Bolivia | Jan 1971 | Oct 2013 |
| MAGDEBURG E G | 895 | Germany | Jan 1935 | Oct 2013 |
| MAGDELENA,NM USA | 1005 | United States | Jan 1906 | Sep 1993 |
| MAGEE | 39 | United States | Jan 1904 | Jul 1960 |
| MAGHNIA | 627 | Algeria | Mar 1938 | Oct 2013 |
| MAGIC LAKE RESORT | 116 | United States | Jun 1916 | Sep 1975 |
| MAGIC MOUNTAIN | 279 | United States | Jun 1989 | Oct 2013 |
| MAGILLIGAN NO 2 | 22 | United Kingdom | Oct 2011 | Oct 2013 |
| MAGLARP | 43 | Sweden | Sep 1986 | Sep 1995 |
| MAGNA ASARCO FARM | 74 | United States | Jan 1951 | Oct 1957 |
| MAGNET | 155 | Canada | Dec 1989 | Mar 2004 |
| MAGNET | 15 | United States | Feb 1942 | Jul 1943 |
| MAGNETAWAN | 400 | Canada | Jan 1924 | May 1958 |
| MAGNITOGORSK | 647 | Russia | Apr 1936 | Oct 2013 |
| MAGNITOGORSK | 52 | Russia | Jun 2009 | Oct 2013 |
| MAGNOLIA | 639 | United States | May 1895 | Jan 1949 |
| MAGNOLIA 3 N | 959 | United States | Jan 1931 | Oct 2013 |
| MAGNUS | 16 | United Kingdom | Mar 2012 | Oct 2013 |
| MAGOG | 655 | Canada | Dec 1949 | Jul 2013 |
| MAGONG | 228 | Taiwan | Sep 1956 | Mar 1989 |
| MAGPIE CREEK SOUTH DAKOTA | 313 | United States | May 1987 | Oct 2013 |
| MAGRATH | 126 | Canada | Feb 1949 | Sep 1965 |
| MAGRATH 2 | 89 | Canada | May 1958 | Jun 1966 |
| MAGUESYES ISLANDS | 98 | Puerto Rico [United States] | Apr 2005 | Oct 2013 |
| MAGUEYES ISLAND | 514 | Puerto Rico [United States] | Jan 1959 | Jun 2010 |
| MAGWA | 51 | Kuwait | Jan 1956 | Mar 1960 |
| MAHA ILLUPPALLAMA | 45 | Sri Lanka | Sep 2009 | Oct 2013 |
| MAHABAD | 120 | Iran | Jan 1991 | Dec 2000 |
| MAHACHKALA | 1577 | Russia | Jan 1882 | Oct 2013 |
| MAHACHKALA | 691 | Russia | Feb 1934 | Oct 2013 |
| MAHAJANGA | 747 | Madagascar | Jan 1951 | Oct 2013 |
| MAHALAPYE | 300 | Botswana | Jan 1961 | May 1990 |
| MAHALAPYE BOTS MAHA | 946 | Botswana | Jan 1917 | Oct 2013 |
| MAHAMBET | 175 | Kazakhstan | Dec 1975 | May 1997 |
| MAHANAIM I BEN YAAK | 103 | Israel | Jun 2004 | Oct 2013 |
| MAHANORO | 224 | Madagascar | Jul 1980 | Sep 2012 |
| MAHANOY CITY 2 N | 33 | United States | Jan 2011 | Oct 2013 |
| MAHAULEPU 941.1 | 189 | United States | Jun 1980 | Apr 2013 |
| MAHDIA | 26 | Tunisia | Jun 2003 | May 2011 |
| MAHE | 18 | Seychelles | Jan 1899 | Jan 1948 |
| MAHE ISLAND | 8 | Seychelles | Sep 2011 | May 2012 |
| MAHINAHINA 466 | 50 | United States | Jan 1957 | Apr 1963 |
| MAHNOMEN 1 W | 549 | United States | Aug 1927 | May 2013 |
| MAHON/SAN LUIS BALEARIC I | 1231 | Spain | Jan 1890 | Oct 2013 |
| MAHONE BAY | 94 | Canada | Nov 1952 | Nov 1960 |
| MAHONING MINE | 376 | United States | Jan 1931 | Apr 1962 |
| MAHSHAHR | 89 | Iran | Dec 2004 | Oct 2013 |
| MAHUKONA 159 | 475 | United States | May 1912 | Dec 1955 |
| MAHUMUDIA | 80 | Romania | May 1993 | Sep 2002 |
| MAICANESTI | 137 | Romania | May 1983 | Apr 1999 |
| MAIDENS | 28 | United States | Jan 1896 | Jul 1898 |
| MAIDUGURI | 940 | Nigeria | Jan 1910 | Jan 2010 |
| MAIJDE COURT | 619 | Bangladesh | Jan 1931 | Dec 1989 |
| MAIJDEE COURT | 119 | Bangladesh | Jan 1991 | Dec 2000 |
| MAIMANEH AIRFLD/PRT | 63 | Afghanistan | Jan 2005 | Jul 2012 |
| MAIN BAY | 360 | United States | Oct 1982 | Sep 2013 |
| MAIN BROOK | 263 | Canada | Jul 1983 | Nov 2008 |
| MAIN PASS 133C | 42 | United States | Oct 1988 | Jul 1992 |
| MAIN PASS 289C OIL P | 17 | United States | Sep 2011 | Oct 2013 |
| MAIN PASS B68 | 70 | United States | Jan 1977 | Mar 1983 |
| MAINE SOROA | 725 | Niger | Jan 1951 | Oct 2013 |
| MAINE-SORDA | 394 | Niger | Dec 1939 | Dec 1980 |
| MAINTIRANO | 696 | Madagascar | Jan 1951 | Oct 2013 |
| MAITLAND POST OFFICE | 676 | Australia | Jan 1957 | Sep 2013 |
| MAITLAND VISITORS CENTRE | 176 | Australia | Jul 1997 | Sep 2013 |
| MAITLAND WEST AERO | 49 | Australia | Jan 1969 | Jun 1974 |
| MAITRI | 79 | Antarctica | Apr 1990 | Oct 2013 |
| MAIZURU REG MET HQ | 798 | Japan | Apr 1947 | Oct 2013 |
| MAJAVATN V | 66 | Norway | Mar 2008 | Oct 2013 |
| MAJENE CELEBES INDO(CE | 225 | Indonesia | Nov 1986 | Oct 2013 |
| Majis [Sohar] | 120 | Oman | Jan 1991 | Dec 2000 |
| MAJKOP | 109 | Russia | Jul 1980 | Oct 2013 |
| MAJMA | 283 | Russia | Jan 1969 | Dec 1994 |
| MAJSK | 495 | Russia | Feb 1950 | Oct 2013 |
| MAJURA MARSHALL | 131 | Marshall Islands | Nov 1997 | Jun 2012 |
| MAJURO ATOLL WEATHE | 111 | Marshall Islands | Aug 2004 | Oct 2013 |
| MAJURO NF | 11 | United States | Aug 1945 | Aug 1946 |
| MAJURO/MARSHALL IS. INTNL. | 716 | Marshall Islands | Aug 1945 | Oct 2013 |
| MAKABANA | 387 | Congo | Jul 1963 | Oct 2013 |
| MAKAHA CTRY CLUB 800.3 | 179 | United States | Sep 1997 | Sep 2013 |
| MAKAHA RIDGE HAWAII | 89 | United States | May 2002 | Oct 2013 |
| MAKAHA VALLEY 800.1 | 32 | United States | Feb 1958 | Apr 1963 |
| MAKAHUENA POINT 940.1 | 206 | United States | Jan 1958 | Mar 1976 |
| MAKALE | 162 | Ethiopia | Nov 1963 | Aug 1999 |
| MAKANDA 1 NW | 299 | United States | Jul 1951 | Sep 1976 |
| MAKAPULAPAI HAWAII | 171 | United States | May 1993 | Sep 2013 |
| MAKAROV | 124 | Russia | Jan 1957 | Jun 1991 |
| MAKAROVA | 45 | Russia | May 1985 | May 1991 |
| MAKARSKA | 174 | Croatia | Mar 1999 | Oct 2013 |
| MAKASSAR | 123 | Indonesia | Mar 1922 | Dec 1932 |
| MAKATINI | 54 | South Africa | Aug 2006 | Oct 2013 |
| MAKAWELI 965 | 737 | United States | Jan 1905 | Aug 2011 |
| MAKENA GOLF CRS 249.1 | 348 | United States | May 1982 | Jul 2013 |
| MAKINDU | 487 | Kenya | Jan 1957 | Sep 2013 |
| MAKKAH | 363 | Saudi Arabia | Aug 1983 | Oct 2013 |
| MAKKAUR FRY | 148 | Norway | Mar 1999 | Oct 2013 |
| MAKKAUR FYR | 740 | Norway | Jan 1951 | Aug 2013 |
| MAKKO | 195 | Iran | Feb 1993 | Oct 2013 |
| MAKKOVIK | 170 | Canada | Apr 1999 | Oct 2013 |
| MAKKOVIK AIRPORT | 238 | Canada | Jan 1986 | Feb 2006 |
| MAKOHOLI | 20 | Zimbabwe | Jun 1992 | Jan 1995 |
| MAKOKOU | 533 | Gabon | Mar 1953 | Sep 2013 |
| MAKOO | 120 | Iran | Jan 1991 | Dec 2000 |
| MAKOTI | 7 | United States | Apr 1980 | Nov 1980 |
| MAKOUA | 594 | Congo | Dec 1952 | Sep 2013 |
| MAKOVSKOYE | 65 | Russia | Jan 1969 | Jul 1981 |
| MAKSATIHA | 634 | Russia | Jul 1959 | Sep 2012 |
| MAKSATIKHA | 118 | Russia | Oct 2003 | Oct 2013 |
| MAKSIMIHA | 250 | Russia | Jan 1969 | Apr 1996 |
| MAKSIMOVO | 829 | Russia | Jan 1939 | Jun 2012 |
| MAKU | 80 | Iran | Apr 2005 | Oct 2013 |
| MAKUA RANGE HAWAII | 136 | United States | Aug 1999 | Sep 2013 |
| MAKUA RIDGE HAWAII | 81 | United States | Aug 1999 | Nov 2007 |
| MAKUA VALLEY HAWAII | 91 | United States | Aug 1999 | Apr 2008 |
| MAKUNG AB | 350 | Taiwan | Jun 1949 | Apr 1999 |
| MAKURAZAKI | 1035 | Japan | Jan 1924 | Oct 2013 |
| MAKURDI NIGI MAKU | 355 | Nigeria | Jan 1951 | Mar 2000 |
| MAKUSCHINO | 890 | Russia | Jan 1936 | Sep 2012 |
| MAKUSINO | 444 | Russia | May 1955 | Oct 2013 |
| MALA | 532 | Sweden | Jan 1962 | Dec 2011 |
| MALA VISTA RANCH | 272 | United States | Jun 1939 | Jun 1965 |
| MALA-BRANNAN | 193 | Sweden | Jan 1973 | Oct 2013 |
| MALA-BRANNAN_A | 191 | Sweden | Jan 1996 | Dec 2011 |
| MALABANG | 10 | Philippines | Dec 1944 | Oct 1945 |
| MALABO | 105 | Equatorial Guinea | Jan 2004 | Oct 2013 |
| MALACCA (MALACCA) | 1327 | Malaysia | Jan 1883 | Oct 2013 |
| MALACKY | 22 | Slovakia | Sep 2011 | Oct 2013 |
| MALAD | 809 | United States | Feb 1904 | Mar 1982 |
| MALAD CITY AIRPORT | 1140 | United States | Feb 1904 | Sep 2013 |
| MALAD-CITY | 905 | United States | Feb 1904 | Dec 1990 |
| MALAGA AEROPUERTO | 794 | Spain | May 1942 | Oct 2013 |
| MALAGASH POINT | 113 | Canada | Aug 1989 | Mar 2000 |
| MALAHAT (AUTO8) | 33 | Canada | May 1992 | Mar 1995 |
| MALAHAT, BC | 243 | Canada | Jan 1992 | Oct 2013 |
| MALAKWA EAGLE R HATCHERY | 120 | Canada | Jun 1969 | Jul 1994 |
| MALANG/ABDURACHMAN SALEH | 33 | Indonesia | Jun 1976 | Jun 1980 |
| MALANGE | 371 | Angola | Oct 1949 | Apr 1986 |
| MALAQUITE BEACH | 99 | United States | May 2005 | Oct 2013 |
| MALARGUE AERO | 616 | Argentina | Jan 1961 | Oct 2013 |
| MALATYA BOLGE | 778 | Turkey | Jan 1949 | Oct 2013 |
| MALAY FALLS | 151 | Canada | Jun 1987 | Jun 2007 |
| MALAY FALLS | 68 | Canada | Apr 2005 | Dec 2010 |
| MALAYBALAY | 600 | Philippines | Jan 1951 | Oct 2013 |
| MALAYER | 81 | Iran | Apr 2005 | Oct 2013 |
| MALAZGIRT | 330 | Turkey | Jan 1963 | Dec 1990 |
| MALBORK | 129 | Poland | Jun 2002 | Oct 2013 |
| MALDEN ISLAND (NORPAX) | 327 | Kiribati | Jan 1891 | Jun 1924 |
| MALDEN MISSOURI AAF | 746 | United States | Apr 1943 | Jul 2013 |
| MALDON (DERBY HILL) | 82 | Australia | Jan 1965 | Jul 1975 |
| MALE / MALEDIVE ISL. | 349 | Maldives | Jan 1975 | Oct 2013 |
| MALENY TAMARIND ST | 101 | Australia | Jun 2001 | Aug 2013 |
| MALEOLAP ATOLL | 21 | Marshall Islands | Oct 1996 | Aug 1998 |
| MALEXANDER | 626 | Sweden | Jan 1961 | Oct 2013 |
| MALEXANDER | 255 | Sweden | Mar 1973 | Sep 1995 |
| MALHEUR BRANCH EXP STN | 844 | United States | Aug 1942 | Oct 2013 |
| MALHEUR-REFUGE-HDQ | 590 | United States | Jul 1937 | Dec 1990 |
| MALI | 79 | Indonesia | Jan 1991 | Oct 1999 |
| MALI LOSINJ | 308 | Croatia | Jul 1975 | Oct 2013 |
| MALIBAY(?) | 71 | Kazakhstan | Dec 1969 | Jan 1982 |
| MALIBU HILLS CALIFORNIA | 208 | United States | Jan 1995 | Oct 2013 |
| MALIBU JERVIS INLET,BC | 411 | Canada | Sep 1974 | Dec 2011 |
| MALILLA | 560 | Sweden | Jan 1965 | Dec 2011 |
| MALILLA | 413 | Sweden | Jan 1973 | Jan 2008 |
| MALILLA | 85 | Sweden | Oct 1991 | Oct 2013 |
| MALILLA A | 47 | Sweden | Jan 2008 | Dec 2011 |
| MALIN 5 E | 583 | United States | Feb 1911 | Mar 1995 |
| MALIN HEAD | 1484 | Ireland | Jan 1890 | Oct 2013 |
| MALINDI | 491 | Kenya | Dec 1961 | Oct 2013 |
| MALINOVKA | 6 | Russia | Jun 1954 | Aug 1958 |
| MALINOVO | 118 | Russia | Nov 1948 | May 1991 |
| MALIYE_KARMAKULY | 806 | Russia | Jan 1936 | Mar 2013 |
| MALJAMAR 4 SE | 667 | United States | Jul 1942 | Sep 2000 |
| MALLACOOTA | 241 | Australia | Aug 1993 | Oct 2013 |
| MALLALAAMO | 34 | Australia | Feb 1942 | Nov 1945 |
| MALLNITZ | 90 | Austria | Jan 1977 | Sep 1997 |
| MALLNITZ-BAD | 76 | Austria | Dec 1990 | Jul 2000 |
| MALLOCH DOME(AUTO8) | 3 | Canada | Mar 1982 | Aug 1982 |
| MALLORY | 144 | United States | Jul 1962 | May 1975 |
| MALLORY RIDGE CALIFORNIA | 170 | United States | Nov 1998 | Oct 2013 |
| MALLORYTOWN LANDING | 153 | Canada | Jan 1978 | Aug 1991 |
| MALMBERGET | 495 | Sweden | Jan 1961 | Dec 2011 |
| MALMBERGET | 195 | Sweden | Jan 1973 | Nov 1990 |
| MALMESBURY | 161 | South Africa | Feb 1998 | Oct 2013 |
| MALMO | 180 | Sweden | Jul 1998 | Oct 2013 |
| MALMO A | 608 | Sweden | Jan 1961 | Dec 2011 |
| MALMO/STURUP | 486 | Sweden | Jan 1973 | Oct 2013 |
| MALMO_2 | 38 | Sweden | Jan 1961 | Apr 1964 |
| MALMSBURY | 16 | Australia | Jul 1966 | Jan 1969 |
| MALMSTROM AFB | 346 | United States | Jan 1949 | Oct 2013 |
| MALMSTROM AFHP | 751 | United States | Dec 1942 | Oct 2013 |
| MALO-KURILSKOJE | 126 | Russia | Oct 1961 | Jun 1991 |
| MALOJAROSLAVEC | 20 | Russia | Feb 2012 | Oct 2013 |
| MALOTT | 61 | United States | May 1950 | May 1957 |
| MALTA 35 S | 598 | United States | Oct 1959 | Jul 2013 |
| MALTA 4 ESE | 448 | United States | Oct 1963 | Oct 2002 |
| MALTA 7 E | 1292 | United States | Jun 1905 | Aug 2013 |
| MALTA AVIATION | 261 | United States | Nov 1984 | Jul 2010 |
| MALTA-7E | 1015 | United States | Jun 1905 | Dec 1990 |
| MALUNG | 611 | Sweden | Jan 1961 | Dec 2011 |
| MALUNG A | 48 | Sweden | Oct 2009 | Oct 2013 |
| MALVERN | 1294 | United States | Jun 1883 | Oct 2013 |
| MALVERN 5 W | 23 | United States | May 1895 | Oct 1897 |
| MALY JAVORNIK | 20 | Slovakia | Jan 2012 | Oct 2013 |
| MALYE DERBETY | 108 | Russia | Jul 1980 | Oct 2013 |
| MALYE KARMAKULY USSR ASIA | 1271 | Russia | Jan 1897 | Oct 2013 |
| MALYY TAYMIR ISLAND | 376 | Russia | Feb 1958 | Mar 1994 |
| MALYY TOOSTAKH | 91 | Russia | Jan 1959 | Aug 1977 |
| MAMA | 474 | Russia | Jul 1961 | Oct 2013 |
| MAMAKAN | 637 | Russia | Jan 1959 | Oct 2013 |
| MAMAKAN | 233 | Russia | Jan 1969 | May 1994 |
| MAMBONE | 328 | Mozambique | Jan 1930 | Dec 1960 |
| MAMFE | 255 | Cameroon | Apr 1962 | Sep 1994 |
| MAMIT LAKE | 164 | Canada | May 1949 | Jan 1965 |
| MAMMOTH CAVE | 906 | United States | Jul 1934 | Oct 2013 |
| MAMMOTH GROVE LAKE WALES | 153 | United States | Sep 1921 | Apr 1936 |
| MAMMOTH LAKES R.S. | 230 | United States | Dec 1993 | Sep 2013 |
| MAMMOTH RS | 12 | United States | Mar 1896 | Apr 1897 |
| MAMMOTH SPRING | 1248 | United States | May 1904 | Oct 2013 |
| MAMMOTH YOSEMITE AP | 236 | United States | Apr 1984 | Oct 2013 |
| MAMMOTH-COTTONWOOD | 308 | United States | Jul 1986 | Oct 2013 |
| MAMMOTH-SPRING | 973 | United States | May 1904 | Dec 1990 |
| MAMONOVO | 67 | Belarus | Jan 1959 | Jan 1970 |
| MAMOU | 582 | Guinea | Jan 1923 | Aug 1996 |
| MAMOU 4 S | 142 | United States | Jul 1970 | Jun 1982 |
| MAN | 412 | Cote D'Ivoire | Jan 1945 | Dec 1980 |
| MAN IVOR MAN | 587 | Cote D'Ivoire | Jan 1951 | Aug 2002 |
| MAN-CHOU-LI/LU-PIN | 353 | China | Jan 1909 | Nov 1981 |
| MAN-ZHOU-LI | 14 | China | Dec 1961 | Nov 1963 |
| MANA 1026 | 817 | United States | Jan 1905 | Apr 1978 |
| MANADO (DR. SAM RATULANGI | 881 | Indonesia | Nov 1912 | Oct 2013 |
| MANAGISH | 70 | Kuwait | Apr 2007 | May 2013 |
| MANAGUA A.C.S | 288 | Nicaragua | Jan 1957 | Dec 1980 |
| MANAGUA A.C.SANDINO | 629 | Nicaragua | Oct 1942 | Oct 2013 |
| MANANJARY MALAGASY REPUBLIC | 509 | Madagascar | Oct 1955 | Oct 2013 |
| MANAOS | 69 | Brazil | May 1924 | Aug 1933 |
| MANASQUAN INL (CGS) | 96 | United States | Nov 1943 | Dec 1990 |
| MANASSA | 1275 | United States | Jan 1893 | Sep 2013 |
| MANASSA | 1007 | United States | May 1892 | Dec 1990 |
| MANASSAS RGNL AP | 571 | United States | Jun 1895 | Oct 2013 |
| MANASSAS RGNL DAVIS | 246 | United States | Apr 1992 | Oct 2013 |
| MANATI 2 E | 1070 | Puerto Rico [United States] | Jan 1900 | Sep 2013 |
| MANAURE | 319 | Colombia | Jan 1953 | Dec 1986 |
| MANAUS | 1237 | Brazil | Jan 1910 | Oct 2013 |
| MANAUS (AEROPORTO) | 487 | Brazil | Jan 1973 | Oct 2013 |
| MANAVGAT | 336 | Turkey | Jan 1963 | Dec 1990 |
| MANCELONA | 316 | United States | Jun 1896 | Apr 1926 |
| MANCHESTER | 601 | United States | Apr 1885 | Sep 1972 |
| MANCHESTER | 161 | United States | Nov 1899 | Dec 1981 |
| MANCHESTER | 141 | United States | Dec 2001 | Oct 2013 |
| MANCHESTER | 18 | United States | May 1885 | Oct 1887 |
| MANCHESTER | 10 | United States | Sep 2012 | Oct 2013 |
| MANCHESTER #2 | 445 | United States | Apr 1976 | Sep 2013 |
| MANCHESTER #2 | 160 | United States | May 2000 | Oct 2013 |
| MANCHESTER 4 W | 706 | United States | Feb 1901 | Apr 2007 |
| MANCHESTER AIRPORT | 521 | United States | Jan 1949 | Oct 2013 |
| MANCHESTER MUNICIPAL AP | 204 | United States | Jan 1949 | Jun 1968 |
| MANCHESTER/BARTON | 154 | United Kingdom | Jan 1973 | Mar 1986 |
| MANCHESTER/RINGWAY APT UNITED | 1410 | United Kingdom | Jan 1794 | Oct 2013 |
| MANCOS | 496 | United States | Nov 1898 | Sep 2013 |
| MANCOS | 200 | United States | Sep 1995 | Oct 2013 |
| MANDA BAY | 25 | Kenya | Aug 2009 | Oct 2013 |
| MANDAL | 671 | China | Nov 1957 | Oct 2013 |
| MANDAL III | 48 | Norway | Sep 2009 | Oct 2013 |
| MANDALAY | 1308 | Burma / Myanmar | Jan 1887 | Oct 2013 |
| MANDALAY INTL | 83 | Burma / Myanmar | Jun 2005 | Oct 2013 |
| MANDALGOBI | 832 | Mongolia | Mar 1944 | Oct 2013 |
| MANDAN EXPERIMENT STN | 1192 | United States | Aug 1913 | Sep 2013 |
| MANDAN FORT LINCOLN PAR | 304 | United States | Jan 1944 | Feb 1970 |
| MANDAN MUNI | 32 | United States | Dec 2010 | Oct 2013 |
| MANDAN-EXPERIMENT-ST | 991 | United States | Aug 1913 | Nov 1996 |
| MANDERA KENYA/BRIT. E. AFRICA | 585 | Kenya | Jan 1951 | Sep 2013 |
| MANDERSON 3 NE | 205 | United States | Jun 1908 | Mar 2004 |
| MANDEVILLE ISLAND | 117 | United States | May 1955 | May 1965 |
| MANDINGA PANAMA | 7 | Panama | Aug 1943 | Mar 1944 |
| MANDINI | 64 | South Africa | Jul 2006 | Oct 2013 |
| MANDNO | 261 | Zaire | Jan 1951 | Feb 2013 |
| MANDORA | 478 | Australia | Jan 1962 | Sep 2013 |
| MANDURAH (MANDURAH PARK) | 1199 | Australia | Sep 1900 | Oct 2013 |
| MANEVICHI | 35 | Ukraine | Mar 2000 | Apr 2004 |
| MANFRED | 289 | United States | Jul 1903 | Jun 1928 |
| MANGAIA AWS | 77 | Cook Islands [New Zealand] | Feb 1997 | Nov 2012 |
| MANGAIA ISLAND | 123 | Cook Islands [New Zealand] | Dec 1985 | Apr 1996 |
| MANGALIA | 380 | Romania | Jan 1964 | Sep 2002 |
| MANGALORE AIRPORT | 639 | Australia | Jan 1959 | Oct 2013 |
| MANGALORE/BAJPE | 475 | India | Jan 1973 | Oct 2013 |
| MANGALORE/PANAMBUR | 1179 | India | Apr 1880 | Aug 1981 |
| MANGILSAN (KOR-AFB) | 295 | Korea, South | Apr 1969 | Jul 2005 |
| MANGLISI | 6 | Georgia | Jul 1975 | Mar 1976 |
| MANGNAI | 662 | China | Sep 1958 | Oct 2013 |
| MANGO (SANSANNE) | 776 | Togo | Feb 1945 | Oct 2013 |
| MANGROVE MOUNTAIN AWS | 228 | Australia | Jul 1994 | Oct 2013 |
| MANGSHIH CHINA AAB | 8 | China | Jan 1945 | Aug 1945 |
| MANGUM 5SE MESONET | 55 | United States | Feb 2009 | Sep 2013 |
| MANGUM-RESEARCH-STAT | 1371 | United States | Jul 1892 | Jan 2011 |
| MANGUT | 831 | Russia | Jan 1940 | Apr 2012 |
| MANGUT SOVIET UNION | 358 | Former USSR (Asia) | Oct 1938 | Sep 1968 |
| MANGYA | 448 | China | Sep 1958 | Dec 1995 |
| MANHATTAN | 1844 | United States | Jan 1858 | Oct 2013 |
| MANHATTAN | 88 | United States | Apr 1895 | Jul 1903 |
| MANHATTAN 6 SSW | 120 | United States | Oct 2003 | Oct 2013 |
| MANHATTAN AGRONOMY FARM | 373 | United States | Oct 1937 | Feb 1970 |
| MANHATTAN MUNICIPAL ARPT | 260 | United States | Jun 1960 | Sep 2013 |
| MANHATTAN POWER HOUSE | 14 | United States | Jun 1950 | Jul 1951 |
| MANHATTAN RGNL | 478 | United States | Jan 1973 | Oct 2013 |
| MANIC 2 LB1 | 205 | Canada | Aug 1963 | Jan 1991 |
| MANICORE | 155 | Brazil | Jul 1974 | Oct 2013 |
| MANICOUGAN & | 119 | Canada | Nov 1961 | Sep 1971 |
| MANIHIKI AWS | 31 | Cook Islands [New Zealand] | Oct 1997 | Sep 2013 |
| MANIHIKI ISLAND | 150 | Kiribati | Jan 1938 | Nov 1950 |
| MANIITSOQ | 110 | Greenland [Denmark] | Aug 2004 | Oct 2013 |
| MANIITSOQ MITTARFIA | 102 | Greenland [Denmark] | Aug 2004 | Oct 2013 |
| MANILA | 813 | United States | Sep 1911 | Sep 2013 |
| MANILA (SCIENCE GARDEN) / | 625 | Philippines | Mar 1945 | Oct 2013 |
| MANILA 18 ESE | 24 | United States | Oct 2011 | Oct 2013 |
| MANINGRIDA (GUDGERAMA) | 435 | Australia | Mar 1965 | Nov 2006 |
| MANINGRIDA AERO | 116 | Australia | Nov 2003 | Oct 2013 |
| MANISA | 653 | Turkey | Jan 1931 | Oct 2013 |
| MANISA ORGANIZE SANA | 5 | Turkey | Mar 2013 | Sep 2013 |
| MANISTEE 3 SE | 1341 | United States | Jul 1888 | Sep 2013 |
| MANISTEE CO BLADKER AP | 396 | United States | Jan 1973 | Oct 2013 |
| MANISTEE HARBOR | 46 | United States | Dec 2009 | Oct 2013 |
| MANISTIQUE (AMOS) | 982 | United States | Jan 1896 | Oct 2013 |
| MANISTIQUE SCHOOLCRAFT CO AP | 173 | United States | Apr 1999 | Oct 2013 |
| MANIT CENTRAL | 687 | Mongolia | Jul 1956 | Oct 2013 |
| MANITOU STRANGE | 120 | Canada | Jun 1970 | Jun 1981 |
| MANITOUWADGE | 461 | Canada | Feb 1956 | Sep 1995 |
| MANITOWISH WATERS | 49 | United States | Jun 1985 | Oct 1994 |
| MANITOWISH WATERS | 20 | United States | Jan 2012 | Oct 2013 |
| MANITOWOC CO | 1770 | United States | Oct 1851 | Oct 2013 |
| MANIWAKI AIRPORT QUE | 1178 | Canada | Jun 1914 | Oct 2013 |
| MANIZALES/LA NUBIA | 62 | Colombia | Oct 1968 | Apr 2013 |
| MANJIMUP | 901 | Australia | Nov 1936 | Oct 2013 |
| MANKATA RGNL ARPT | 476 | United States | Jan 1973 | Oct 2013 |
| MANKATO | 576 | United States | Jan 1893 | May 2004 |
| MANKATO MUNI AP | 8 | United States | Jan 2005 | Dec 2005 |
| MANKOMEN LAKE | 250 | United States | Jul 1965 | Nov 2008 |
| MANKOTA | 491 | Canada | Oct 1962 | Oct 2013 |
| MANKOTA 2 | 57 | Canada | Jul 1971 | Nov 1976 |
| MANLEY HOT SPRINGS, AK. | 782 | United States | Jul 1909 | Oct 2013 |
| MANLEY/HOT SPRINGS | 13 | United States | Apr 1992 | May 1999 |
