SmogRank / Countries / China / January 2023

Most polluted cities in China, January 2023

3 cities in China ranked by their average PM2.5 over the 31 days. Worst: Shanghai at 43.8 µg/m³, #25 of 849 cities in the world. Cleanest: Beijing at 26.7. A city needs measurements on 70% of the days to be ranked.

  1. 1ShanghaiShanghai
    43.8
  2. 2GuangzhouGuangdong
    29.0
  3. 3BeijingBeijing
    26.7
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, January 2023 · China now

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SmogRank, most polluted cities in China, PM2.5, January 2023, smogrank.com/cn/history/2023-01 (accessed 2 Oct 2026).

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