SmogRank / Countries / Estonia / December 2025

Most polluted cities in Estonia, December 2025

4 cities in Estonia ranked by their average PM2.5 over the 31 days. Worst: Tartu at 4.0 µg/m³, #2,252 of 2,360 cities in the world. Cleanest: Tallinn at 2.3. A city needs measurements on 70% of the days to be ranked.

  1. 1TartuTartu
    4.0
  2. 2NarvaIda-Virumaa
    3.1
  3. 3Kohtla-JärveIda-Virumaa
    2.9
  4. 4TallinnHarjumaa
    2.3
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, December 2025 · Estonia now