Index of air quality in the world's major cities: April 5

Daily air quality index of some of the world's major cities on April 5, using data from AirNow, CITEAIR, and the American Embassy in Beijing.



City

  Average 04/04/2011                                                         Average 05/04/2011                                                

London

Madrid NA

Paris 

Brussels 

Berlin 

NA

Prague 

Zurich 

Beijing  NA NA
Beijing US embassy stats

Shanghai 

NA NA

Hong Kong

Brunei 
Seoul  NA

New York 

San Francisco

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 6:30am GMT on April 05.
http://www.airqualitynow.eu
http://www.airnow.gov

 

Have you tried new the Independent Digital Edition apps?
Travel
ebookHow to enjoy the perfect short break in 20 great cities
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
  • Get to the point
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

    Recruitment Genius: Hotel Assistant Manager

    £18000 - £20000 per annum: Recruitment Genius: This hotel in Chadderton is a p...

    Ashdown Group: Technical IT Manager - North London - Growing business

    £40000 - £50000 per annum: Ashdown Group: A growing business that has been ope...

    Recruitment Genius: Content Assistant / Copywriter

    £15310 per annum: Recruitment Genius: An exciting opportunity has arisen for a...

    Recruitment Genius: Operations Manager

    £24000 - £25000 per annum: Recruitment Genius: Situated in the heart of Bradfo...

    Day In a Page

    Robert Fisk in Abu Dhabi: The acceptable face of the Emirates

    The acceptable face of the Emirates

    Has Abu Dhabi found a way to blend petrodollars with principles, asks Robert Fisk
    Nepal earthquake: One man's desperate escape from Everest base camp after the disaster

    Escape from Everest base camp

    Nick Talbot was sitting in his tent when the tsunami of snow and rock hit. He was lucky to live, unlike his climbing partner just feet away...
    Adopting high fibre diet could dramatically cut risk of bowel cancer, says study

    What happened when 20 Americans swapped diets with 20 Africans?

    Innovative study in the US produces remarkable results
    Blake Lively and 'The Age of Adaline': Gossip Girl comes
of age

    Gossip girl comes of age

    Blake Lively is best known for playing an affluent teenager. Her role as a woman who is trapped forever at 29 is a greater challenge
    Goat cuisine: Kid meat is coming to Ocado

    Goat cuisine

    It's loved by chefs, ethical, low in fat and delicious. So, will kid meat give lamb a run for its money?
    14 best coat hooks

    Hang on: 14 best coat hooks

    Set the tone for the rest of your house with a stylish and functional coat rack in the hallway
    Not even the 'putrid throat' could stop the Ross Poldark swoon-fest'

    Not even the 'putrid throat' could stop the Ross Poldark swoon-fest'

    How a costume drama became a Sunday night staple
    Miliband promises no stamp duty for first-time buyers as he pushes Tories on housing

    Miliband promises no stamp duty for first-time buyers

    Labour leader pushes Tories on housing
    Aviation history is littered with grand failures - from the the Bristol Brabazon to Concorde - but what went wrong with the SuperJumbo?

    Aviation history is littered with grand failures

    But what went wrong with the SuperJumbo?
    Fear of Putin, Islamists and immigration is giving rise to a new generation of Soviet-style 'iron curtains' right across Europe

    Fortress Europe?

    Fear of Putin, Islamists and immigration is giving rise to a new generation of 'iron curtains'
    Never mind what you're wearing, it's what you're reclining on

    Never mind what you're wearing

    It's what you're reclining on that matters
    General Election 2015: Chuka Umunna on the benefits of immigration, humility – and his leader Ed Miliband

    Chuka Umunna: A virus of racism runs through Ukip

    The shadow business secretary on the benefits of immigration, humility – and his leader Ed Miliband
    Yemen crisis: This exotic war will soon become Europe's problem

    Yemen's exotic war will soon affect Europe

    Terrorism and boatloads of desperate migrants will be the outcome of the Saudi air campaign, says Patrick Cockburn
    Marginal Streets project aims to document voters in the run-up to the General Election

    Marginal Streets project documents voters

    Independent photographers Joseph Fox and Orlando Gili are uploading two portraits of constituents to their website for each day of the campaign
    Game of Thrones: Visit the real-life kingdom of Westeros to see where violent history ends and telly tourism begins

    The real-life kingdom of Westeros

    Is there something a little uncomfortable about Game of Thrones shooting in Northern Ireland?