What is the air quality trend in Weiji?

Over the past 15 days, Weiji had an average AQI of 63 based on station measurements. The worst day was 2026-05-30 with AQI 89.

How is Weiji air quality measured?

Air quality in Weiji 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 Weiji, China

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

312h

PM2.5 Station

312h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	89	89–89	30.4 µg/m³	1h	2
2026-05-29	66	31–127	19.4 µg/m³	23h	2
2026-05-28	59	19–96	16.6 µg/m³	23h	2
2026-05-27	67	30–129	19.9 µg/m³	22h	2
2026-05-26	60	39–92	16.7 µg/m³	23h	2
2026-05-25	59	32–144	16.3 µg/m³	23h	2
2026-05-24	63	19–180	20.6 µg/m³	23h	2
2026-05-23	72	38–161	22.8 µg/m³	23h	2
2026-05-22	72	38–117	22.3 µg/m³	24h	2
2026-05-21	64	13–90	19.1 µg/m³	21h	2
2026-05-20	54	27–89	14.9 µg/m³	23h	2
2026-05-19	61	17–170	19.1 µg/m³	24h	2
2026-05-18	61	42–89	17.1 µg/m³	23h	2
2026-05-17	53	28–74	13.9 µg/m³	20h	2
2026-05-16	59	15–95	17.0 µg/m³	16h	2

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