SmogRank / Countries / Australia / August 2025

Most polluted cities in Australia, August 2025

3 cities in Australia ranked by their average PM2.5 over the 31 days. Worst: Melbourne at 6.8 µg/m³, #1,772 of 2,289 cities in the world. Cleanest: Adelaide at 3.1. A city needs measurements on 70% of the days to be ranked.

  1. 1Melbournelow-cost sensorsVictoria
    6.8
  2. 2Sydneylow-cost sensorsNew South Wales
    4.0
  3. 3Adelaidelow-cost sensorsSouth Australia
    3.1
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, August 2025 · Australia now

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SmogRank, most polluted cities in Australia, PM2.5, August 2025, smogrank.com/au/history/2025-08 (accessed 2 Oct 2026).

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