What is the air quality trend in Yidu?

Over the past 15 days, Yidu had an average AQI of 66 based on station measurements. The worst day was 2026-05-21 with AQI 82.

How is Yidu air quality measured?

Air quality in Yidu 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 Yidu, China

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

331h

PM2.5 Station

331h · 8 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	73	63–80	22.4 µg/m³	7h	8
2026-05-29	65	53–75	18.6 µg/m³	24h	8
2026-05-28	64	51–78	18.2 µg/m³	24h	8
2026-05-27	71	58–95	21.8 µg/m³	24h	9
2026-05-26	61	45–72	16.8 µg/m³	24h	9
2026-05-25	57	38–80	15.6 µg/m³	24h	8
2026-05-24	64	44–103	18.2 µg/m³	24h	9
2026-05-23	75	64–92	23.7 µg/m³	24h	9
2026-05-22	70	52–85	21.2 µg/m³	24h	9
2026-05-21	82	55–161	27.5 µg/m³	24h	8
2026-05-20	66	40–200	22.1 µg/m³	24h	9
2026-05-19	62	39–79	17.7 µg/m³	24h	8
2026-05-18	57	32–75	15.6 µg/m³	24h	8
2026-05-17	60	41–74	16.4 µg/m³	22h	9
2026-05-16	67	44–78	20.1 µg/m³	14h	9

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