What is the air quality trend in Yanjing?

Over the past 8 days, Yanjing had an average AQI of 61 based on station measurements. The worst day was 2026-07-22 with AQI 75.

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

167h

PM2.5 Station

167h · 20 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	75	74–76	23.5 µg/m³	2h	22
2026-07-21	65	46–81	18.8 µg/m³	24h	16
2026-07-20	63	54–76	17.9 µg/m³	24h	19
2026-07-19	61	53–73	17.0 µg/m³	24h	20
2026-07-18	59	33–78	16.0 µg/m³	24h	16
2026-07-17	55	46–65	14.4 µg/m³	24h	19
2026-07-16	56	40–88	14.9 µg/m³	24h	21
2026-07-15	54	45–62	13.7 µg/m³	21h	18

Back to Yanjing Air Quality