SmogRank / Countries / China / 2026

Most polluted cities in China, 2026

1 city in China ranked by their average PM2.5 so far (273 of 365 days); 1 above the WHO annual guideline (5.0 µg/m³). Worst: Changchun at 40.7 µg/m³, #51 of 2,181 cities in the world. A city needs measurements on 70% of the days to be ranked.

  1. 1Changchunlow-cost sensorsJilin
    40.78.1×
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, 2026 · China now