Index of air quality in the world's major cities: June 15

Daily air quality index of some of the world's major cities on June 15, using data from AirNow, CITEAIR, and the American Embassy in Beijing.



City

Average 14/06/2011 Average 15/06/2011

London

Madrid
NA

Paris

Brussels

Berlin


Prague

Zurich

Beijing NA
Beijing US embassy stats
Shanghai NA

Hong Kong

Brunei
Seoul
NA

New York

NA

San Francisco

NA
Mexico City

Montreal

Toronto

New Delhi
Sydney



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 8:00am GMT on June 15.
http://www.airqualitynow.eu
http://www.airnow.gov

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