What is the air quality trend in Chongming?

Over the past 8 days, Chongming had an average AQI of 69 based on station measurements. The worst day was 2026-07-19 with AQI 81.

How is Chongming air quality measured?

Air quality in Chongming is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Chongming, China

Name: Chongming Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Chongming, China.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 8 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	68	34–94	20.7 µg/m³	—	16h	12
2026-07-20	71	55–98	21.7 µg/m³	28.0	24h	10
2026-07-19	81	63–108	26.4 µg/m³	41.2	24h	12
2026-07-18	74	62–108	23.1 µg/m³	39.7	24h	12
2026-07-17	72	49–131	22.1 µg/m³	35.5	24h	7
2026-07-16	70	53–98	21.3 µg/m³	24.5	24h	8
2026-07-15	70	42–134	21.2 µg/m³	26.5	24h	6
2026-07-14	49	25–73	12.7 µg/m³	13.2	7h	7

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