Air Quality Index

Air Quality Index (AQI) is a tool to showcase air quality status. It transforms complex air quality data of various pollutants into a single number and colour.
AQI has six categories of air quality. Read More... These are: Good, Satisfactory, Moderately Polluted, Poor, Very Poor and Severe Each of these categories is decided based on ambient concentration values of air pollutants and their likely health impacts As the AQI increases, an increasingly large percentage of the population is likely to experience health effects . Read Less

Least Polluted City

Most Polluted City

Measuring Key Pollutants in Air Quality

Particulate Matter (size less than 10 µm) or (PM10)
Particulate Matter (size less than 2.5 µm) or (PM2.5)
Nitrogen Dioxide (NO2)
Sulphur Dioxide (SO2)
Carbon Monoxide (CO)
Ozone (O3)
Ammonia (NH3)
Lead (Pb)

AQI Values and Their Health Impact

AQI 0-50

Good

Possible Health Impacts: Minimal impact

AQI 51-100

Satisfactory

Possible Health Impacts: Minor breathing discomfort to sensitive people

AQI 100-200

Moderate

Possible Health Impacts: Breathing discomfort to the people with lungs, asthma and heart diseases

AQI 201-300

Poor

Possible Health Impacts: Breathing discomfort to most people on prolonged exposure

AQI 301-400

Very Poor

Possible Health Impacts: Respiratory illness on prolonged exposure

AQI 401-500

Severe

Possible Health Impacts: Affects healthy people and seriously impacts those with existing diseases

Weather

Mumbai

New Delhi

Dehradun

Jaipur

Patna

Lucknow

Bhopal

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