SmogRank / Countries / Latvia / 2026
Most polluted cities in Latvia, 2026
3 cities in Latvia ranked by their average PM2.5 so far (273 of 365 days); 3 above the WHO annual guideline (5.0 µg/m³). Worst: Rēzekne at 13.5 µg/m³, #374 of 2,181 cities in the world. Cleanest: Riga at 10.0. 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+