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Air Quality Index (AQI)

Calculate Air Quality Index (AQI) instantly with the exact formula and a worked example.

Air Quality Index (AQI)

PM2.5, µg/m³
AQI
68.0435
Calculate Air Quality Index (AQI) instantly with the exact formula and a worked example.

More about: Air Quality Index (AQI)

What it calculates

The “Air Quality Index (AQI)” calculator computes AQI from 1 parameter: pm2.5, µg/m³.

A handy everyday calculator for daily tasks.

Example calculation

With parameters PM2.5, µg/m³ = 20 the result is 68.04.

How to use

  1. Enter pm2.5, µg/m³ — each field above is adjustable with a slider.
  2. AQI is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is Air Quality Index (AQI) calculated?
The Air Quality Index (AQI) calculator computes AQI from pm2.5, µg/m³. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Air Quality Index (AQI) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.

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