Index of air quality in the world's major cities

Daily air quality index of some of the world's major cities on December 1, using data from AirNow, CITEAIR, and the American Embassy in Beijing.



City

Average 30 /11/2010 Average 01/12/2010

London (UK)

Good Good

Madrid (Spain)

Moderate NA

Paris (France)

Moderate Good

Brussels (Belgium)  

Good Good

Berlin (Germany )

Good Good

Prague (Czech Republic)

Good Good

Zurich (Switzerland)

Good Good

Beijing (China)  

Good Good                                                   

Beijing - US embassy stats

Very unhealthy Hazardous

Shanghai (China)  

Good Good

Hong Kong (China)

Unhealthy for sensitive groups Moderate

Brunei (Brunei)

Good Good

New York (USA)  

Moderate Good

San Francisco (USA)

Moderate Moderate

Mexico City (Mexico )

Unhealthy for sensitive groups Unhealthy for sensitive groups

Montreal (Canada)

Good Good

Toronto (Canada)

Good Good

New Delhi (India)

Moderate Very unhealthy

Sydney (Australia)

Good Good




The Air Quality Index (AQI) or Air Pollution Index (API) measures the parts of pollutant in a specified volume of air. The lower the AQI the fewer particles of pollution are in the air. For a more detailed explanation see http://www.airnow.gov/index.cfm?action=aqibasics.aqi.

All results are color-coded following the American AQI standard shown below. For all countries outside of Europe, the US and Canada, that region's definition of AQI terms has been accepted.

Legend 

Air Quality

 

Good

 

Moderate

 

Unhealthy for sensitive groups

 

Unhealthy

 

Very Unhealthy

 

Hazardous

 

Data: Data relating to Europe, the US and Canada is taken from CITEAIR - Common Information to European Air ( http://www.airnow.gov / http://www.airqualitynow.eu); data concerning China is taken from both official Chinese government sources and the US Embassy's automated air index Twitter account. For all countries the data displayed falls within either that country's definition of the level of air quality or the international AQI index. Data for all European, US and Canadian cities refers to background, not roadside, levels of air quality.

All data was collected at 1:00pm GMT on December 1.

http://www.airqualitynow.eu
http://www.airnow.gov

 

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