Index of air quality in the world's major cities: February 17

Daily air quality index of some of the world's major cities on February 17, using data from AirNow, CITEAIR, and the American Embassy in Beijing.



City

  Average 16/02/2011                                                   Average 17/02/2011                                            

London (UK)

Madrid (Spain) NA

Paris (France)

Brussels (Belgium)  

Berlin (Germany )

Prague (Czech Republic)

Zurich (Switzerland)

Beijing (China) NA
Beijing US embassy stats

Shanghai (China)  

NA

Hong Kong (China)

Brunei (Brunei)
Seoul (South Korea) NA

New York (USA)  

San Francisco (USA)

Mexico City (Mexico )

Montreal (Canada)

Toronto (Canada)

New Delhi (India)

Sydney (Australia)




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 8:30am GMT on February 17.
http://www.airqualitynow.eu
http://www.airnow.gov

 

The Independent travel offers: Discover a world of inspiring destinations

News
i100
News
people Emma Watson addresses celebrity nude photo leak
News
Katie Hopkins appearing on 'This Morning' after she purposefully put on 4 stone.
peopleKatie Hopkins breaks down in tears over weight gain challenge
News
peopleHis band Survivor was due to resume touring this month
PROMOTED VIDEO
Have you tried new the Independent Digital Edition apps?
Arts and Entertainment
Robert De Niro, Martin Scorsese and DiCaprio, at an awards show in 2010
filmsDe Niro, DiCaprio and Pitt to star
News
i100
News
In this photo illustration a school student eats a hamburger as part of his lunch which was brought from a fast food shop near his school, on October 5, 2005 in London, England. The British government has announced plans to remove junk food from school lunches. From September 2006, food that is high in fat, sugar or salt will be banned from meals and removed from vending machines in schools across England. The move comes in response to a campaign by celebrity TV chef Jamie Oliver to improve school meals.
science
Life and Style
Red or dead: An actor portrays Hungarian countess Elizabeth Báthory, rumoured to have bathed in blood to keep youthful
health
Arts and Entertainment
James Dean on the set of 'Rebel without a Cause', 1955
photographyHe brought documentary photojournalism to Tinseltown, and in doing so, changed the way film stars would be portrayed for ever
News
people'It can last and it's terrifying'
Travel
ebookHow to enjoy the perfect short break in 20 great cities
Arts and Entertainment
tv
Life and Style
fashionModel of the moment shoots for first time with catwalk veteran
News
i100
Sport
Tom Cleverley
footballLoan move comes 17 hours after close of transfer window
Sport
Alexis Sanchez, Radamel Falcao, Diego Costa and Mario Balotelli
footballRadamel Falcao and Diego Costa head record £835m influx
Independent Travel Videos
Independent Travel Videos
Simon Calder in Amsterdam
Independent Travel Videos
Simon Calder in Giverny
Independent Travel Videos
Simon Calder in St John's
Independent Travel Videos
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

ES Rentals

    iJobs Job Widget
    iJobs Travel

    Marketing Executive / Member Services Exec

    £20 - 26k + Benefits: Guru Careers: A Marketing Executive / Member Services Ex...

    Sales Account Manager

    £15,000 - £25,000: Recruitment Genius: A fantastic opportunity has arisen for ...

    VB.NET and C# developer (VB.NET,C#,ASP.NET)

    £30000 - £45000 per annum + Bonus+Benefits+Package: Harrington Starr: VB.NET a...

    Business Development Manager / Sales Pro

    £30 - 35k + Uncapped Comission (£70k Y1 OTE): Guru Careers: A Business Develop...

    Day In a Page

    Chief inspector of GPs: ‘Most doctors don’t really know what bad practice can be like for patients’

    Steve Field: ‘Most doctors don’t really know what bad practice can be like for patients’

    The man charged with inspecting doctors explains why he may not be welcome in every surgery
    Stolen youth: Younger blood can reverse many of the effects of ageing

    Stolen youth

    Younger blood can reverse many of the effects of ageing
    Bob Willoughby: Hollywood's first behind the scenes photographer

    Bob Willoughby: The reel deal

    He was the photographer who brought documentary photojournalism to Hollywood, changing the way film stars would be portrayed for ever
    Hollywood heavyweights produce world's most expensive corporate video - for Macau casino

    Hollywood heavyweights produce world's most expensive corporate video - for Macau casino

    Scorsese in the director's chair with De Niro, DiCaprio and Pitt to star
    Angelina Jolie's wedding dress: made by Versace, designed by her children

    Made by Versace, designed by her children

    Angelina Jolie's wedding dressed revealed
    Anyone for pulled chicken?

    Pulling chicks

    Pulled pork has gone from being a US barbecue secret to a regular on supermarket shelves. Now KFC is trying to tempt us with a chicken version
    9 best steam generator irons

    9 best steam generator irons

    To get through your ironing as swiftly as possible, invest in one of these efficient gadgets
    'I’ll tell you what I would not serve - lamb and potatoes': US ambassador hits out at stodgy British food served at diplomatic dinners

    'I’ll tell you what I would not serve - lamb and potatoes'

    US ambassador hits out at stodgy British food
    Radio Times female powerlist: A 'revolution' in TV gender roles

    A 'revolution' in TV gender roles

    Inside the Radio Times female powerlist
    Endgame: James Frey's literary treasure hunt

    James Frey's literary treasure hunt

    Riddling trilogy could net you $3m
    Fitbit: Because the tingle feels so good

    Fitbit: Because the tingle feels so good

    What David Sedaris learnt about the world from his fitness tracker
    Saudis risk new Muslim division with proposal to move Mohamed’s tomb

    Saudis risk new Muslim division with proposal to move Mohamed’s tomb

    Second-holiest site in Islam attracts millions of pilgrims each year
    Alexander Fury: The designer names to look for at fashion week this season

    The big names to look for this fashion week

    This week, designers begin to show their spring 2015 collections in New York
    Will Self: 'I like Orwell's writing as much as the next talented mediocrity'

    'I like Orwell's writing as much as the next talented mediocrity'

    Will Self takes aim at Orwell's rules for writing plain English
    Meet Afghanistan's middle-class paint-ballers

    Meet Afghanistan's middle-class paint-ballers

    Toy guns proving a popular diversion in a country flooded with the real thing