What is the air quality trend in Ya'an?

Over the past 8 days, Ya'an had an average AQI of 63 based on station measurements. The worst day was 2026-09-03 with AQI 83.

How is Ya'an air quality measured?

Air quality in Ya'an 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 Ya'an, China

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

Historical PM2.5 and AQI trend from monitoring stations near Ya'an, China.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

131h

PM2.5 Station

131h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	76	46–124	24.0 µg/m³	5h	1
2026-09-04	65	21–159	20.0 µg/m³	20h	1
2026-09-03	83	41–170	28.2 µg/m³	21h	1
2026-09-02	59	27–85	17.0 µg/m³	18h	1
2026-09-01	54	17–97	15.2 µg/m³	19h	1
2026-08-31	47	15–78	12.5 µg/m³	19h	1
2026-08-30	57	21–153	16.7 µg/m³	18h	1
2026-08-29	65	25–117	19.9 µg/m³	11h	1

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