What is the air quality trend in Alor Setar?

Over the past 15 days, Alor Setar had an average AQI of 52 based on station measurements. The worst day was 2026-05-30 with AQI 65.

How is Alor Setar air quality measured?

Air quality in Alor Setar 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 Alor Setar, Malaysia

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

296h

PM2.5 Station

296h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	28	21–34	6.6 µg/m³	3h	1
2026-06-08	51	26–101	14.1 µg/m³	20h	2
2026-06-07	44	20–85	11.4 µg/m³	20h	2
2026-06-06	56	38–156	15.4 µg/m³	22h	2
2026-06-05	47	9–72	12.2 µg/m³	19h	2
2026-06-04	43	9–105	11.3 µg/m³	21h	2
2026-06-03	59	2–101	17.5 µg/m³	23h	2
2026-06-02	61	13–158	18.7 µg/m³	19h	2
2026-06-01	61	26–103	17.6 µg/m³	19h	2
2026-05-31	60	33–99	16.9 µg/m³	23h	2
2026-05-30	65	52–79	18.9 µg/m³	23h	2
2026-05-29	53	16–88	14.3 µg/m³	21h	2
2026-05-28	53	29–72	13.7 µg/m³	21h	2
2026-05-27	61	30–158	17.9 µg/m³	23h	2
2026-05-26	47	25–66	11.9 µg/m³	19h	2

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