What is the air quality trend in Semenyih?

Over the past 13 days, Semenyih had an average AQI of 94 based on station measurements. The worst day was 2026-08-29 with AQI 154.

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.

118

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

17h

PM2.5 Station

17h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-01	94	94–94	32.5 µg/m³	1h	1
2026-08-30	81	68–94	26.4 µg/m³	2h	1
2026-08-29	154	154–154	61.1 µg/m³	1h	5
2026-08-28	86	84–89	29.0 µg/m³	2h	1
2026-08-27	79	79–79	25.4 µg/m³	1h	1
2026-08-25	151	151–151	55.5 µg/m³	1h	1
2026-08-24	124	96–151	44.5 µg/m³	2h	1
2026-08-23	87	87–87	29.2 µg/m³	1h	1
2026-08-21	77	77–77	24.5 µg/m³	1h	1
2026-08-20	61	61–61	16.9 µg/m³	1h	1
2026-08-18	71	71–71	21.6 µg/m³	1h	1
2026-08-17	78	76–80	24.9 µg/m³	2h	1
2026-08-16	90	90–90	30.6 µg/m³	1h	1

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