Air Quality Index Calculator

Air Quality Today - Delhi, India
Air Quality Today - Hong Kong
Air Quality Today - Beijing China
Air Quality Today - Bangkok Thailand
Air Quality Today - Kolkata India
Air Quality Today - Kuala Lumpur Malaysia
Air Quality Today - London UK
Air Quality Today - Madrid Spain
Air Quality Today - Tokyo Japan
Air Quality Today - Toronto Canada
Air Quality Today - Milan Italy
Air Quality Today - Mumbai, India
Air Quality Today - Paris France
Air Quality Today - Pune India
Air Quality Today - Seoul South Korea
Air Quality Today - Shanghai China
Air Quality Today - Singapore
Air Quality Today - Hanoi Vietnam
Air Quality Today - Cities in Europe
Air Quality Today - NSW Australia
Air Quality Today - Sau Paulo Brazil
Air Quality Today - Taiwan

The AQI is an "index" determined by calculating the degree of pollution in the city or at the monitoring point and includes five main pollutants - particulate matter (see SIM-10-2008), ground-level ozone, sulfur dioxide, carbon monoxide and nitrogen dioxide. Each of these pollutants have an air quality standard which is used to calculate the overall AQI for the city. Simultaneously, one can also establish the limiting pollutant(s), resulting in the estimating AQI.

In numbers, AQI is represented between 0 to 500 with 0 representing good air and 500 representing hazardous air. For better understanding and presentation, the AQI is broken down into six categories, each color coded with the number scale.

Air Quality Index Codes

Establishing this number in the real time or in a forecast mode is not an easy exercise, as it involves monitoring in case of real time estimates or modeling of emissions, dispersion of the pollutants depending on local meteorology and terrain, for the forecast mode. However, a number of platforms (and groups) are established and in use, for the readers to choose and learn (and apply). Some useful reference material is listed below

Download an example calculator - requires customization to local pollution standards for use.

Some examples of real time air quality monitoring data and AQI conversions from across the world are listed below

 

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Energy Policy Journal - Re-fueling Road Transport in India


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