What is the air quality trend in Yanjing?

Over the past 15 days, Yanjing had an average AQI of 75 based on station measurements. The worst day was 2026-10-13 with AQI 96.

How is Yanjing air quality measured?

Air quality in Yanjing 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 Yanjing, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 18 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	55	52–58	13.9 µg/m³	3h	18
2026-10-20	65	31–91	18.9 µg/m³	24h	21
2026-10-19	65	47–81	18.9 µg/m³	24h	22
2026-10-18	52	38–87	13.8 µg/m³	24h	17
2026-10-17	47	21–74	12.0 µg/m³	24h	19
2026-10-16	78	51–98	25.0 µg/m³	23h	20
2026-10-15	91	29–134	30.9 µg/m³	24h	20
2026-10-14	87	58–133	28.9 µg/m³	24h	19
2026-10-13	96	67–122	33.3 µg/m³	24h	24
2026-10-12	83	69–106	27.2 µg/m³	24h	24
2026-10-11	85	56–121	28.2 µg/m³	24h	23
2026-10-10	80	66–97	25.9 µg/m³	24h	24
2026-10-09	84	64–104	27.6 µg/m³	24h	30
2026-10-08	84	68–97	28.0 µg/m³	24h	46
2026-10-07	80	67–97	26.1 µg/m³	19h	43

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