Air Quality Real-time Map

• Whole Earth
• Asia
• Australia
• Europe
• North America

• Canada
• Chile
• China
• France
• Germany
• India
• Japan
• Malyasia
• Poland
• South Korea
• Spain
• Sweden
• Turkey
• United States
• United Kingdom

• Bangkok
• Beijing
• Chengdu
• Delhi
• Dhaka
• Istanbul
• Kyoto
• London
• Los Angeles
• Mumbai
• New York City
• Paris
• Seoul
• Shanghai
• Tokyo

• View All

Description

This map provides near real-time information on particulate matter air pollution less than 2.5 microns in diameter (PM_2.5). Under typical conditions, PM_2.5 is the most damaging form of air pollution likely to be present, contributing to heart disease, stroke, lung cancer, respiratory infections, and other diseases.

The data presented here has been constructed from thousands of surface station measurements from around the world, and tends to be a couple hours behind real-time.  The available station data is interpolated using Kriging-based techniques to create a continuous estimate of air quality conditions.  The interpolation process is designed to smooth the data and remove some of the local noise in order to produce estimates for regional average air pollution. Regions shown with horizontal/vertical hashing have PM_2.5 concentrations that have been estimated based on PM₁₀ observations.

Health indicators and qualitative descriptions are included based on the US EPA’s air quality index (AQI) standard for 24-hour exposure.

More Information

• Berkeley’s Earth Air Quality home page
• Movie of air quality April 2014 – April 2015
• Recent Berkeley Earth paper on Chinese air quality

Data Download

Mapped PM_2.5 fields corresponding to the rendered real-time maps are available for download.