What is the air quality trend in Weihai?

Over the past 20 days, Weihai had an average AQI of 71 based on station measurements. The worst day was 2026-05-12 with AQI 98.

How is Weihai air quality measured?

Air quality in Weihai 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 Weihai, China

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

474h

PM2.5 Station

474h · 9 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	63	52–81	17.8 µg/m³	23h	8
2026-05-27	70	53–91	21.2 µg/m³	24h	9
2026-05-26	57	30–70	15.5 µg/m³	24h	8
2026-05-25	54	31–66	13.9 µg/m³	24h	9
2026-05-24	66	40–91	19.3 µg/m³	24h	9
2026-05-23	76	64–99	23.8 µg/m³	24h	9
2026-05-22	67	54–92	19.9 µg/m³	24h	8
2026-05-21	71	57–90	21.8 µg/m³	24h	9
2026-05-20	62	38–81	17.5 µg/m³	24h	8
2026-05-19	62	50–74	17.5 µg/m³	24h	8
2026-05-18	55	34–70	14.3 µg/m³	24h	8
2026-05-17	61	51–73	16.7 µg/m³	22h	8
2026-05-16	68	23–99	20.9 µg/m³	22h	8
2026-05-15	78	58–94	24.8 µg/m³	24h	8
2026-05-14	88	67–163	30.0 µg/m³	24h	8
2026-05-13	83	63–125	27.1 µg/m³	24h	9
2026-05-12	98	68–141	33.9 µg/m³	24h	8
2026-05-11	88	24–124	29.9 µg/m³	24h	7
2026-05-10	80	61–115	25.7 µg/m³	24h	8
2026-05-09	74	54–93	23.1 µg/m³	23h	9

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