What is the air quality trend in Shiyan?

Over the past 7 days, Shiyan had an average AQI of 72 based on station measurements. The worst day was 2026-10-15 with AQI 107.

How is Shiyan air quality measured?

Air quality in Shiyan 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 Shiyan, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

144h

PM2.5 Station

144h · 5 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-20	52	20–151	15.0 µg/m³	20h	3
2026-10-19	57	28–81	15.8 µg/m³	22h	4
2026-10-18	51	19–177	16.1 µg/m³	20h	2
2026-10-17	54	27–95	14.5 µg/m³	21h	3
2026-10-16	98	62–155	33.8 µg/m³	21h	3
2026-10-15	107	53–172	39.8 µg/m³	20h	3
2026-10-14	90	45–147	30.2 µg/m³	20h	6

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