SmogRank / Countries / Estonia / September 2026

Most polluted cities in Estonia, September 2026

4 cities in Estonia ranked by their average PM2.5 over the 30 days. Worst: Tartu at 3.5 µg/m³, #2,213 of 2,332 cities in the world. Cleanest: Tallinn at 2.4. A city needs measurements on 70% of the days to be ranked.

  1. 1TartuTartu
    3.5
  2. 2NarvaIda-Virumaa
    2.8
  3. 3Kohtla-JärveIda-Virumaa
    2.6
  4. 4TallinnHarjumaa
    2.4
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 2026 · Estonia now