SmogRank / Countries / Latvia / April 2025
Most polluted cities in Latvia, April 2025
4 cities in Latvia ranked by their average PM2.5 over the 30 days. Worst: Liepāja at 13.7 µg/m³, #319 of 2,286 cities in the world. Cleanest: Riga at 7.7. 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+