PM2.5 Air Pollution — methodology

Category: Environment & Climate · Unit: µg/m³ · Published annual

What this metric measures

The average annual concentration of fine particulate matter (PM2.5) in the air, in micrograms per cubic metre.

Why it matters: PM2.5 is the most health-relevant air pollutant, linked to heart and lung disease. Bushfire smoke can push it well above safe levels, as it did in 2019–20.

Source & provenance

Publisher: World Bank (EN.ATM.PM25.MC.M3)
Update frequency: annual
Licence: CC BY 4.0

How the score is computed

This metric is in a category that is tracked but does not contribute to the National Snapshot Index.

See related corrections at /corrections, or the live data and chart at https://www.australiametrics.org/metric/pm25-air-pollution.