What is the air quality trend in Beijing?

Over the past 14 days, Beijing had an average AQI of 97 based on station measurements. The worst day was 2026-10-12 with AQI 153.

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

333h

PM2.5 Station

333h · 27 stations

Temperature GFS model

56pt

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	80	57–102	25.9 µg/m³	24h	25
2026-10-18	46	24–64	11.6 µg/m³	24h	33
2026-10-17	49	26–78	12.9 µg/m³	24h	31
2026-10-16	80	55–140	25.6 µg/m³	24h	26
2026-10-15	112	65–148	39.6 µg/m³	24h	29
2026-10-14	96	41–126	32.9 µg/m³	24h	21
2026-10-13	73	53–107	22.4 µg/m³	24h	21
2026-10-12	153	105–173	70.6 µg/m³	24h	29
2026-10-11	138	95–168	55.8 µg/m³	24h	22
2026-10-10	136	95–165	53.1 µg/m³	24h	26
2026-10-09	125	83–160	46.2 µg/m³	24h	31
2026-10-08	112	68–156	40.4 µg/m³	24h	8
2026-10-07	100	60–147	34.5 µg/m³	22h	9

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