Air Quality Index Calculator

Estimate air quality category based on PM2.5 concentration using a simplified AQI model.

Fine particulate matter in micrograms per cubic meter.
Time spent outdoors or in affected air each day.
Choose yes for asthma, children, elderly, or heart/lung issues.
How we calculate

We estimate AQI from PM2.5 using standard breakpoint ranges, then adjust the practical guidance based on exposure time and whether you belong to a sensitive group.