SmogRank / World / Australia / 2026

Most polluted cities in Australia, 2026

6 cities in Australia ranked by their average PM2.5 so far (273 of 365 days); 5 above the WHO annual guideline (5.0 µg/m³). Worst: Traralgon at 6.3 µg/m³, #2,200 of 2,452 cities in the world. Cleanest: Adelaide at 3.3. A city needs measurements on 70% of the days to be ranked.

← Traralgon 6.3 µg/m³ 7.5 µg/m³5 WHO annual guideline0
Every city in Australia ranked for 2026, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1TraralgonVictoria
    351.3×
  2. 2Melbournelow-cost sensorsVictoria
    341.2×
  3. 3GeelongVictoria
    331.2×
  4. 4Bacchus MarshVictoria
    321.1×
  5. 5Sydneylow-cost sensorsNew South Wales
    291.1×
  6. 6Adelaidelow-cost sensorsSouth Australia
    180.7×
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, 2026 · Australia now

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

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