What is the air quality trend in Bishan?

Over the past 8 days, Bishan had an average AQI of 67 based on station measurements. The worst day was 2026-10-15 with AQI 87.

How is Bishan air quality measured?

Air quality in Bishan 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 Bishan, China

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

164h

PM2.5 Station

164h · 25 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	62	48–76	17.6 µg/m³	7h	20
2026-10-20	62	37–84	17.6 µg/m³	24h	28
2026-10-19	62	46–72	17.2 µg/m³	24h	29
2026-10-18	49	31–64	12.5 µg/m³	24h	23
2026-10-17	53	36–66	13.6 µg/m³	24h	26
2026-10-16	83	62–141	26.9 µg/m³	23h	27
2026-10-15	87	64–126	29.2 µg/m³	24h	28
2026-10-14	83	56–104	27.3 µg/m³	14h	28

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