SmogRank / World / China / April 2023

Most polluted cities in China, April 2023

3 cities in China ranked by their average PM2.5 over the 30 days. Worst: Beijing at 59.2 µg/m³, #9 of 1,251 cities in the world. Cleanest: Guangzhou at 33.5. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for 3 of these 30 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.

← Beijing 59.2
Every city in China ranked for April 2023, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1BeijingBeijing
    154
  2. 2ShenyangLiaoning
    137
  3. 3GuangzhouGuangdong
    96
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, April 2023 · China now

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SmogRank, most polluted cities in China, PM2.5, April 2023, smogrank.com/cn/history/2023-04 (accessed 2 Oct 2026).

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