Air Quality Index (AQI)

Air Quality Index (AQI) mind map
Context
Delhi's air quality
Plummets to 'severe' category
AQI over 400
Reference
Indian Express
Graded Response Action Plan (GRAP) activation
Stage 3 initiated
AQI essentials
Colour coded index
Launched in 2014
Swachh Bharat campaign
Objective
Public and government communication
Current and future air pollution levels
Represented pollutants
6 to 8 pollutants
Including Ozone (O3), Particulate Matter (PM 10 and PM 2.5), Carbon Monoxide (CO), Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2)
Impact on human health
Weight given to each pollutant
AQI transformation
Air quality data to single number
Nomenclature and colour
Categories
Good (0-50)
Satisfactory (50-100)
Moderately polluted (100-200)
Poor (200-300)
Very poor (300-400)
Severe (400-500)
Health effects correlation
Higher AQI, worse air quality
Adverse effects on larger population
GRAP specifics
Emergency anti-pollution measures
For Delhi-National Capital Region (NCR)
Notified in 2017

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