What is the air quality trend in Semenyih?

Over the past 2 days, Semenyih had an average AQI of 181 based on station measurements. The worst day was 2026-10-19 with AQI 182.

How is Semenyih air quality measured?

Air quality in Semenyih 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 Semenyih, Malaysia

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

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

157

Current AQI
Unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

47h

PM2.5 Station

47h · 1 station

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-20	180	162–204	111.2 µg/m³	127.7	23h	1
2026-10-19	182	153–211	114.1 µg/m³	131.5	24h	1

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