SmogRank / World / Estonia / September 2025

Most polluted cities in Estonia, September 2025

4 cities in Estonia ranked by their average PM2.5 over the 30 days. Worst: Tartu at 4.3 µg/m³, #2,243 of 2,426 cities in the world. Cleanest: Narva at 3.7. A city needs measurements on 70% of the days to be ranked.

← Tartu 4.3
Every city in Estonia ranked for September 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1TartuTartu
    4.3
  2. 2Kohtla-JärveIda-Virumaa
    4.2
  3. 3TallinnHarjumaa
    3.8
  4. 4NarvaIda-Virumaa
    3.7
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, September 2025 · Estonia now

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SmogRank, most polluted cities in Estonia, PM2.5, September 2025, smogrank.com/ee/history/2025-09 (accessed 2 Oct 2026).

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