What is the air quality trend in Siwei?

Over the past 8 days, Siwei had an average AQI of 66 based on station measurements. The worst day was 2026-09-05 with AQI 83.

How is Siwei air quality measured?

Air quality in Siwei 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 Siwei, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 12 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	83	74–103	27.3 µg/m³	10h	12
2026-09-04	73	59–91	22.6 µg/m³	24h	13
2026-09-03	68	57–96	20.3 µg/m³	24h	14
2026-09-02	62	48–85	17.1 µg/m³	24h	16
2026-09-01	59	42–123	15.8 µg/m³	24h	17
2026-08-31	54	32–67	13.7 µg/m³	24h	15
2026-08-30	63	41–120	17.9 µg/m³	24h	15
2026-08-29	73	59–88	22.7 µg/m³	11h	14

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