SmogRank / Countries / Australia / April 2026

Most polluted cities in Australia, April 2026

8 cities in Australia ranked by their average PM2.5 over the 30 days. Worst: Melbourne at 7.3 µg/m³, #1,363 of 2,283 cities in the world. Cleanest: Adelaide at 2.2. A city needs measurements on 70% of the days to be ranked.

  1. 1Melbournelow-cost sensorsVictoria
    7.3
  2. 2TraralgonVictoria
    6.6
  3. 3Sydneylow-cost sensorsNew South Wales
    6.4
  4. 4Bacchus MarshVictoria
    5.9
  5. 5GeelongVictoria
    5.2
  6. 6BallaratVictoria
    4.7
  7. 7MilduraVictoria
    4.1
  8. 8Adelaidelow-cost sensorsSouth Australia
    2.2
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, April 2026 · Australia now

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SmogRank, most polluted cities in Australia, PM2.5, April 2026, smogrank.com/au/history/2026-04 (accessed 2 Oct 2026).

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