What is the air quality trend in Shah Alam?

Over the past 8 days, Shah Alam had an average AQI of 169 based on station measurements. The worst day was 2026-10-19 with AQI 179.

How is Shah Alam air quality measured?

Air quality in Shah Alam 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 Shah Alam, Malaysia

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

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

156

Current AQI
Unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 4 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-20	158	124–174	72.4 µg/m³	83.4	22h	3
2026-10-19	179	153–194	109.9 µg/m³	120.3	24h	3
2026-10-18	167	156–179	87.0 µg/m³	96.4	24h	3
2026-10-17	164	99–189	86.6 µg/m³	96.5	24h	3
2026-10-16	172	155–193	95.6 µg/m³	106.2	24h	3
2026-10-15	176	155–202	103.8 µg/m³	118.8	24h	2
2026-10-14	175	139–221	102.6 µg/m³	118.8	24h	2
2026-10-13	166	166–166	84.7 µg/m³	101.6	1h	3

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