What is the air quality trend in Chengdu?

Over the past 8 days, Chengdu had an average AQI of 58 based on station measurements. The worst day was 2026-07-18 with AQI 66.

How is Chengdu air quality measured?

Air quality in Chengdu 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 Chengdu, China

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

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

107

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

162h

PM2.5 Station

162h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	65	19–104	19.3 µg/m³	18h	4
2026-07-20	66	25–91	19.4 µg/m³	22h	4
2026-07-19	66	19–100	19.6 µg/m³	24h	4
2026-07-18	66	31–96	19.7 µg/m³	23h	4
2026-07-17	55	36–76	14.8 µg/m³	24h	6
2026-07-16	59	38–97	16.3 µg/m³	24h	5
2026-07-15	54	36–80	14.0 µg/m³	24h	5
2026-07-14	36	13–55	8.8 µg/m³	3h	4

Back to Chengdu Air Quality