What is the air quality trend in Simunjan?

Over the past 8 days, Simunjan had an average AQI of 204 based on station measurements. The worst day was 2026-08-31 with AQI 244.

How is Simunjan air quality measured?

Air quality in Simunjan 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 Simunjan, Malaysia

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

Historical PM2.5 and AQI trend from monitoring stations near Simunjan, Malaysia.

137

Current AQI
Unhealthy for sensitive groups CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

164h

PM2.5 Station

164h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-09-05	204	156–242	143.9 µg/m³	273.2	8h	1
2026-09-04	169	120–211	95.9 µg/m³	283.6	24h	2
2026-09-03	201	153–312	135.3 µg/m³	297.4	24h	2
2026-09-02	200	116–280	135.0 µg/m³	269.1	24h	2
2026-09-01	220	133–340	159.3 µg/m³	334.6	24h	2
2026-08-31	244	150–375	189.7 µg/m³	422.8	23h	2
2026-08-30	204	158–305	137.4 µg/m³	339.5	24h	2
2026-08-29	192	132–399	123.2 µg/m³	327.7	13h	2

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