SmogRank / World / China / March 2026
Most polluted cities in China, March 2026
1 city in China ranked by their average PM2.5 over the 31 days. Worst: Changchun at 105.1 µg/m³, #2 of 2,616 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1Changchunlow-cost sensorsJilin 105.1
Good0–5
Fair6–15
Moderate16–50
Poor51–90
Very poor91–140
Extremely poor141+
The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. 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, March 2026 · China now
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SmogRank, most polluted cities in China, PM2.5, March 2026, smogrank.com/cn/history/2026-03 (accessed 2 Oct 2026).
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