SmogRank / Countries / China

Most polluted cities in China

China's government monitoring network publishes no terms that let us reuse its readings, so we leave it out, and most cities in China are missing here, not clean. The cities shown are measured by community low-cost sensors, tagged as such. Why.

1 measured city, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Changchun at 8.1 µg/m³, #625 in the world.

1Changchunlow-cost sensorsJilin 8.10.5×

Good0–9.0

Moderate9.1–35.4

Sensitive groups35.5–55.4

Unhealthy55.5–125.4

Very unhealthy125.5–225.4

Hazardous225.5+

Estimated: cities without a monitor

China cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City	7-day estimate	Band
Shanghai	≈ 30 µg/m³	Moderate
Chongqing	≈ 36 µg/m³	Unhealthy for sensitive groups
Chengdu	≈ 49 µg/m³	Unhealthy for sensitive groups
Beijing	≈ 67 µg/m³	Unhealthy
Guangzhou	≈ 21 µg/m³	Moderate
Shenzhen	≈ 12 µg/m³	Moderate
Tianjin	≈ 49 µg/m³	Unhealthy for sensitive groups
Wuhan	≈ 42 µg/m³	Unhealthy for sensitive groups
Xi’an	≈ 83 µg/m³	Unhealthy
Hangzhou	≈ 45 µg/m³	Unhealthy for sensitive groups
Harbin	≈ 20 µg/m³	Moderate
Dongguan	≈ 17 µg/m³	Moderate
Hefei	≈ 24 µg/m³	Moderate
Weifang	≈ 33 µg/m³	Moderate
Nanjing	≈ 31 µg/m³	Moderate
Shenyang	≈ 27 µg/m³	Moderate
Foshan	≈ 21 µg/m³	Moderate
Jinan	≈ 53 µg/m³	Unhealthy for sensitive groups
Dalian	≈ 24 µg/m³	Moderate
Wuzhong	≈ 19 µg/m³	Moderate
Qingdao	≈ 18 µg/m³	Moderate
Yantai	≈ 18 µg/m³	Moderate
Suzhou	≈ 29 µg/m³	Moderate
Zhengzhou	≈ 58 µg/m³	Unhealthy
Nanning	≈ 10 µg/m³	Moderate
Kunming	≈ 10 µg/m³	Moderate
Shijiazhuang	≈ 46 µg/m³	Unhealthy for sensitive groups
Pudong	≈ 30 µg/m³	Moderate
Taiyuan	≈ 21 µg/m³	Moderate
Zibo	≈ 41 µg/m³	Unhealthy for sensitive groups
Xiamen	≈ 19 µg/m³	Moderate
Yangzhou	≈ 21 µg/m³	Moderate
Huai'an	≈ 21 µg/m³	Moderate
Guiyang	≈ 11 µg/m³	Moderate
Bao'an	≈ 12 µg/m³	Moderate
Wuxi	≈ 31 µg/m³	Moderate
Lanzhou	≈ 23 µg/m³	Moderate
Fuzhou	≈ 21 µg/m³	Moderate
Ürümqi	≈ 38 µg/m³	Unhealthy for sensitive groups
Zaozhuang	≈ 35 µg/m³	Moderate

Updated 2026-10-01 23:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.