What is the air quality trend in Yanjia?

Over the past 8 days, Yanjia had an average AQI of 67 based on station measurements. The worst day was 2026-10-15 with AQI 91.

How is Yanjia air quality measured?

Air quality in Yanjia 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 Yanjia, China

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 20 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	50	49–51	12.0 µg/m³	3h	20
2026-10-20	64	36–92	18.5 µg/m³	24h	21
2026-10-19	66	45–84	19.0 µg/m³	24h	21
2026-10-18	53	34–82	14.2 µg/m³	24h	17
2026-10-17	48	19–77	12.3 µg/m³	24h	19
2026-10-16	80	48–151	25.9 µg/m³	23h	20
2026-10-15	91	35–125	31.0 µg/m³	24h	20
2026-10-14	88	43–155	30.1 µg/m³	19h	19

Back to Yanjia Air Quality