What is the air quality trend in Simunjan?

Over the past 15 days, Simunjan had an average AQI of 156 based on station measurements. The worst day was 2026-08-31 with AQI 256.

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.

165

Current AQI
Unhealthy CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

304h

PM2.5 Station

304h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	204	167–242	146.5 µg/m³	9h	1
2026-09-04	183	120–343	112.9 µg/m³	24h	2
2026-09-03	208	163–312	148.5 µg/m³	24h	2
2026-09-02	208	116–280	145.2 µg/m³	24h	2
2026-09-01	232	155–340	175.5 µg/m³	24h	2
2026-08-31	256	164–375	203.7 µg/m³	23h	2
2026-08-30	218	168–305	159.5 µg/m³	24h	2
2026-08-29	196	80–399	131.7 µg/m³	24h	2
2026-08-28	121	71–185	50.2 µg/m³	24h	2
2026-08-27	92	55–132	31.0 µg/m³	24h	2
2026-08-26	86	12–163	29.8 µg/m³	23h	2
2026-08-25	96	12–180	38.5 µg/m³	18h	1
2026-08-24	78	18–206	34.9 µg/m³	12h	1
2026-08-23	69	14–190	25.7 µg/m³	17h	1
2026-08-22	93	64–154	31.8 µg/m³	10h	2

Back to Simunjan Air Quality