What is the air quality trend in Beijing?

Over the past 2 days, Beijing had an average AQI of 73 based on station measurements. The worst day was 2026-10-19 with AQI 81.

How is Beijing air quality measured?

Air quality in Beijing 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 Beijing, China

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

45h

PM2.5 Station

45h · 27 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-20	66	18–113	20.4 µg/m³	23h	27
2026-10-19	81	57–102	26.2 µg/m³	22h	25

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