What is the air quality trend in Yanjia?

Over the past 15 days, Yanjia had an average AQI of 58 based on station measurements. The worst day was 2026-07-22 with AQI 70.

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

335h

PM2.5 Station

335h · 15 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	70	61–85	21.5 µg/m³	6h	16
2026-07-21	62	30–82	17.5 µg/m³	24h	18
2026-07-20	63	51–79	18.0 µg/m³	24h	20
2026-07-19	65	40–119	19.0 µg/m³	24h	20
2026-07-18	60	43–103	16.6 µg/m³	24h	17
2026-07-17	57	45–65	15.0 µg/m³	24h	20
2026-07-16	55	45–103	14.1 µg/m³	24h	22
2026-07-15	53	38–74	13.8 µg/m³	24h	17
2026-07-14	54	37–66	14.0 µg/m³	24h	14
2026-07-13	54	35–68	14.0 µg/m³	24h	18
2026-07-12	53	38–63	13.4 µg/m³	24h	17
2026-07-11	57	42–84	15.1 µg/m³	24h	19
2026-07-10	62	40–157	17.9 µg/m³	24h	18
2026-07-09	53	38–68	13.7 µg/m³	24h	23
2026-07-08	52	46–56	13.0 µg/m³	17h	27

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