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.

  1. 1Changchunlow-cost sensorsJilin
    10
Low1–3
Moderate4–6
High7–9
Very high10

The UK's Daily Air Quality Index (1 to 10), PM2.5 bands. 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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