SmogRank / Countries / Greece / 2025

Most polluted cities in Greece, 2025

2 cities in Greece ranked by their average PM2.5 over the 365 days; 2 above the WHO annual guideline (5.0 µg/m³). Worst: Acharnés at 11.8 µg/m³, #390 of 2,131 cities in the world. Cleanest: Khalándrion at 9.7. A city needs measurements on 70% of the days to be ranked.

  1. 1AcharnésAttica
    11.82.4×
  2. 2KhalándrionAttica
    9.71.9×
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, 2025 · Greece now

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SmogRank, most polluted cities in Greece, PM2.5, 2025, smogrank.com/gr/history/2025 (accessed 2 Oct 2026).

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