What is the air quality trend in Chenggu?

Over the past 15 days, Chenggu had an average AQI of 53 based on station measurements. The worst day was 2026-07-18 with AQI 70.

How is Chenggu air quality measured?

Air quality in Chenggu 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 Chenggu, China

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

320h

PM2.5 Station

320h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	58	55–62	15.5 µg/m³	4h	2
2026-07-21	59	23–107	16.5 µg/m³	24h	3
2026-07-20	53	15–95	14.5 µg/m³	23h	3
2026-07-19	62	18–85	18.0 µg/m³	22h	3
2026-07-18	70	25–155	21.6 µg/m³	23h	3
2026-07-17	61	25–157	18.0 µg/m³	23h	4
2026-07-16	49	30–75	12.6 µg/m³	24h	4
2026-07-15	44	21–59	10.8 µg/m³	22h	4
2026-07-14	49	19–71	12.9 µg/m³	22h	4
2026-07-13	49	29–67	12.4 µg/m³	24h	4
2026-07-12	47	22–68	12.0 µg/m³	24h	4
2026-07-11	54	21–86	14.5 µg/m³	23h	4
2026-07-10	57	38–90	15.3 µg/m³	23h	4
2026-07-09	47	8–74	11.9 µg/m³	21h	3
2026-07-08	43	21–64	10.7 µg/m³	18h	3

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