14 – 20 Oct 2026 · Malaysia

Alor Setar weekly air quality

US AQI · PM2.5 · 24-hour source averages

71.6Weekly mean AQI · Moderate

Official DOE API mean: 61.3. Calculated separately from reported official observations.

Each DOE observation identified as PM2.5 is converted using the published API formula and US AQI breakpoints. This is not an official all-pollutant AQI or NowCast. Calculation details

168 eligible observations · 0 excluded.

-20.5 AQI compared with the previous week’s eligible mean of 92.1.

Peak AQI: 91 at Alor Setar · 16 Oct 2026, 15:00 (UTC+8).

Daily US AQI (PM2.5)

Low 54High 91AQI

14 Oct20 Oct

20 OctDaily mean · Peak 7164.1Avg AQI

Based on 24 hourly readings.

Daily and hourly means use eligible observations across the selected locations. Each observation uses a 24-hour PM2.5 average.

Export AQI CSV

Means and peaks use only converted observations. Missing days remain gaps.

Day	Mean AQI	Peak AQI	Eligible / excluded
2026-10-14	66.7Moderate	71	24 / 0
2026-10-15	74.2Moderate	78	24 / 0
2026-10-16	87.2Moderate	91	24 / 0
2026-10-17	75.8Moderate	83	24 / 0
2026-10-18	66.8Moderate	71	24 / 0
2026-10-19	66.7Moderate	71	24 / 0
2026-10-20	64.1Moderate	71	24 / 0

Hourly means (UTC+8)

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
2026-10-14	68	67	67	65	64	64	64	64	64	65	65	64	64	64	65	68	67	70	70	71	70	70	70	71
2026-10-15	71	71	71	72	72	72	72	72	72	72	71	74	75	75	77	75	77	77	77	77	77	77	77	78
2026-10-16	80	81	83	83	84	87	87	88	88	90	90	90	88	90	90	91	91	90	88	88	88	87	86	84
2026-10-17	83	83	81	80	80	78	78	77	77	77	77	77	77	75	75	74	74	72	72	71	70	70	70	70
2026-10-18	71	70	70	70	68	68	68	68	67	67	67	65	65	65	64	65	65	65	65	67	67	67	65	65
2026-10-19	65	65	64	65	65	65	65	65	65	65	65	67	67	65	67	67	68	68	68	68	70	70	70	71
2026-10-20	71	71	71	71	70	70	70	70	70	68	68	67	65	64	62	61	59	58	58	56	55	55	55	54

Observation categories

Good: 0

Moderate: 168

Unhealthy for Sensitive Groups: 0

Unhealthy: 0

Very Unhealthy: 0

Hazardous: 0

US AQI scale
AQI	Category
0–50	Good
51–100	Moderate
101–150	Unhealthy for Sensitive Groups
151–200	Unhealthy
201–300	Very Unhealthy
301+	Hazardous

Alor Setar air quality.
Weekly city review.

14 – 20 Oct 20267 days · Kedah

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi bandar Alor Setar, Kedah

Alor Setar air quality averaged an Air Pollutant Index (API) of 61.3 (Moderate) during the week of 14 – 20 Oct 2026, monitored via the Alor Setar station.

City weekly average

61.3API

Moderate · Sederhana

Daily averages55.5 – 72.2 APIWed → Tue

Explore the week

Week's highest reading: 75ModeratePeak reading during period
Monitoring station: Alor SetarKedahRepresentative station
Good to Moderate air: 100%of hourly readings168 readings recorded
State & National context: 65.4 APIKedah avgNational avg: 108.7 API

Seven days of air quality in Alor Setar

Pergerakan purata harian dan julat bacaan sepanjang minggu

Archived API · Malaysia TimePoint, tap or use ← → to inspect

National averageStation peakMin–max rangeAPI bands7 of 7 points · 0–80 API

The average follows all available readings each day. The range spans the lowest and highest station readings; a national average can hide local peaks.

View chart data as a table

Archived national API, daily
Date / time	Average	Minimum	Peak
Wed, 14 Oct	57.9	56	61
Thu, 15 Oct	63.3	61	66
Fri, 16 Oct	72.2	67	75
Sat, 17 Oct	64.2	60	69
Sun, 18 Oct	58.1	56	61
Mon, 19 Oct	58	56	61
Tue, 20 Oct	55.5	44	61

The week, hour by hour

Purata setiap jam sepanjang tujuh hari di stesen berkaitan

Hourly readings at Alor Setar indicate typical diurnal trends such as morning traffic and afternoon dispersion in Alor Setar.

020406080APIBrighter cells ran hazier than the rest of this week (44 – 75 API)

Haziest hour of the week: Fri at 15:00 MYT, averaging API 75 nationwide.

View the hourly figures as a table

National average API by hour, Malaysia Time
Day	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	59	58	58	57	56	56	56	56	56	57	57	56	56	56	57	59	58	60	60	61	60	60	60	61
Thu	61	61	61	62	62	62	62	62	62	62	61	63	64	64	65	64	65	65	65	65	65	65	65	66
Fri	67	68	69	69	70	72	72	73	73	74	74	74	73	74	74	75	75	74	73	73	73	72	71	70
Sat	69	69	68	67	67	66	66	65	65	65	65	65	65	64	64	63	63	62	62	61	60	60	60	60
Sun	61	60	60	60	59	59	59	59	58	58	58	57	57	57	56	57	57	57	57	58	58	58	57	57
Mon	57	57	56	57	57	57	57	57	57	57	57	58	58	57	58	58	59	59	59	59	60	60	60	61
Tue	61	61	61	61	60	60	60	60	60	59	59	58	57	56	55	54	53	52	52	50	48	46	46	44

How readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik3%5
ModerateSederhana97%163
UnhealthyTidak Sihat0%0
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 168 hourly station readings.

Health advisory

Panduan kesihatan mengikut kategori kualiti udara

Air quality is acceptable. People with asthma, heart or lung conditions should reduce prolonged or heavy outdoor exertion.

Kualiti udara sederhana. Pesakit asma, jantung atau paru-paru dinasihatkan mengurangkan aktiviti berat di luar bangunan.

Malaysia API scale · Skala IPU Malaysia
API	Category	Kategori
0–50	Good	Baik
51–100	Moderate	Sederhana
101–200	Unhealthy	Tidak Sihat
201–300	Very Unhealthy	Sangat Tidak Sihat
301+	Hazardous	Berbahaya

Comparison with nearby cities

Perbandingan purata kualiti udara mingguan dengan bandar berdekatan

Johor Bahru172.6 API
UnhealthyLive status →
Kuala Lumpur163.5 API
UnhealthyLive status →
Kuching92.7 API
ModerateLive status →

Day	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	59	58	58	57	56	56	56	56	56	57	57	56	56	56	57	59	58	60	60	61	60	60	60	61
Thu	61	61	61	62	62	62	62	62	62	62	61	63	64	64	65	64	65	65	65	65	65	65	65	66
Fri	67	68	69	69	70	72	72	73	73	74	74	74	73	74	74	75	75	74	73	73	73	72	71	70
Sat	69	69	68	67	67	66	66	65	65	65	65	65	65	64	64	63	63	62	62	61	60	60	60	60
Sun	61	60	60	60	59	59	59	59	58	58	58	57	57	57	56	57	57	57	57	58	58	58	57	57
Mon	57	57	56	57	57	57	57	57	57	57	57	58	58	57	58	58	59	59	59	59	60	60	60	61
Tue	61	61	61	61	60	60	60	60	60	59	59	58	57	56	55	54	53	52	52	50	48	46	46	44

Day	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	59	58	58	57	56	56	56	56	56	57	57	56	56	56	57	59	58	60	60	61	60	60	60	61
Thu	61	61	61	62	62	62	62	62	62	62	61	63	64	64	65	64	65	65	65	65	65	65	65	66
Fri	67	68	69	69	70	72	72	73	73	74	74	74	73	74	74	75	75	74	73	73	73	72	71	70
Sat	69	69	68	67	67	66	66	65	65	65	65	65	65	64	64	63	63	62	62	61	60	60	60	60
Sun	61	60	60	60	59	59	59	59	58	58	58	57	57	57	56	57	57	57	57	58	58	58	57	57
Mon	57	57	56	57	57	57	57	57	57	57	57	58	58	57	58	58	59	59	59	59	60	60	60	61
Tue	61	61	61	61	60	60	60	60	60	59	59	58	57	56	55	54	53	52	52	50	48	46	46	44