What is the air quality trend in Dachang?

Over the past 8 days, Dachang had an average AQI of 55 based on station measurements. The worst day was 2026-07-21 with AQI 65.

How is Dachang air quality measured?

Air quality in Dachang 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 Dachang, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

74h

PM2.5 Station

74h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	45	34–56	11.3 µg/m³	2h	1
2026-07-21	65	46–87	19.3 µg/m³	3h	2
2026-07-20	61	18–104	18.3 µg/m³	12h	1
2026-07-19	63	36–89	18.1 µg/m³	12h	1
2026-07-18	57	8–124	16.7 µg/m³	13h	1
2026-07-17	45	21–67	11.2 µg/m³	14h	1
2026-07-16	44	14–57	10.8 µg/m³	11h	1
2026-07-15	61	38–91	17.3 µg/m³	7h	1

Back to Dachang Air Quality