What is the air quality trend in Chenggu?

Over the past 8 days, Chenggu had an average AQI of 58 based on station measurements. The worst day was 2026-07-18 with AQI 67.

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 Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	62	62–63	17.7 µg/m³	2h	6
2026-07-21	62	23–102	17.6 µg/m³	24h	3
2026-07-20	58	15–121	16.7 µg/m³	24h	3
2026-07-19	61	18–82	17.5 µg/m³	23h	4
2026-07-18	67	24–112	20.0 µg/m³	24h	4
2026-07-17	59	25–157	17.2 µg/m³	24h	5
2026-07-16	50	31–79	12.7 µg/m³	24h	5
2026-07-15	45	32–61	11.1 µg/m³	21h	5

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