SmogRank / World / Australia / November 2025
Most polluted cities in Australia, November 2025
2 cities in Australia ranked by their average PM2.5 over the 30 days. Worst: Sydney at 4.8 µg/m³, #1,957 of 2,157 cities in the world. Cleanest: Melbourne at 2.3. A city needs measurements on 70% of the days to be ranked.
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, November 2025 · Australia now
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SmogRank, most polluted cities in Australia, PM2.5, November 2025, smogrank.com/au/history/2025-11 (accessed 2 Oct 2026).
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