30 Sep – 6 Oct 2026 · Malaysia

Alor Setar weekly air quality

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

72.9Weekly mean AQI · Moderate

Official DOE API mean: 62.3. 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

148 eligible observations · 0 excluded.

+5.1 AQI compared with the previous week’s eligible mean of 67.8.

Peak AQI: 101 at Alor Setar · 30 Sept 2026, 14:00 (UTC+8).

Daily US AQI (PM2.5)

Low 59High 101AQI

30 Sept6 Oct

6 OctDaily mean · Peak 6564.8Avg AQI

Based on 4 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
2026-09-30	91.8Moderate	101	24 / 0
2026-10-01	68.7Moderate	80	24 / 0
2026-10-02	81.2Moderate	86	24 / 0
2026-10-03	65.5Moderate	75	24 / 0
2026-10-04	63.4Moderate	67	24 / 0
2026-10-05	68.3Moderate	71	24 / 0
2026-10-06	64.8Moderate	65	4 / 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
2026-09-30	93	91	91	91	93	93	93	94	94	94	94	96	97	99	101	99	96	91	88	84	83	83	83	81
2026-10-01	80	78	78	75	74	72	72	71	70	68	68	67	64	62	61	61	62	61	62	64	65	70	71	72
2026-10-02	74	75	75	77	78	80	80	81	83	84	84	84	84	84	86	84	84	84	84	84	84	80	78	77
2026-10-03	75	75	74	72	71	70	68	68	67	65	65	65	65	64	62	62	62	62	61	61	59	59	59	61
2026-10-04	61	61	62	62	64	64	65	65	65	64	64	64	62	62	62	62	62	64	62	61	65	65	67	67
2026-10-05	65	65	65	65	65	67	67	68	68	70	71	71	71	71	71	71	71	71	71	71	68	67	65	65
2026-10-06	65	65	65	64	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 147

Unhealthy for Sensitive Groups: 1

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.

30 Sep – 6 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 62.3 (Moderate) during the week of 30 Sep – 6 Oct 2026, monitored via the Alor Setar station.

City weekly average

62.3API

Moderate · Sederhana

Daily averages55.8 – 75.3 APIWed → Tue

Explore the week

Week's highest reading: 81ModeratePeak reading during period
Monitoring station: Alor SetarKedahRepresentative station
Good to Moderate air: 100%of hourly readings148 readings recorded
State & National context: 61.4 APIKedah avgNational avg: 81.4 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 · 0–100 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, 30 Sep	75.3	68	81
Thu, 1 Oct	59.4	54	67
Fri, 2 Oct	68	63	71
Sat, 3 Oct	57.3	53	64
Sun, 4 Oct	55.8	54	58
Mon, 5 Oct	59.2	57	61
Tue, 6 Oct	56.8	56	57

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.

0255075100APIBrighter cells ran hazier than the rest of this week (53 – 81 API)

Haziest hour of the week: Wed at 14:00 MYT, averaging API 81 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	76	75	75	75	76	76	76	77	77	77	77	78	79	80	81	80	78	75	73	70	69	69	69	68
Thu	67	66	66	64	63	62	62	61	60	59	59	58	56	55	54	54	55	54	55	56	57	60	61	62
Fri	63	64	64	65	66	67	67	68	69	70	70	70	70	70	71	70	70	70	70	70	70	67	66	65
Sat	64	64	63	62	61	60	59	59	58	57	57	57	57	56	55	55	55	55	54	54	53	53	53	54
Sun	54	54	55	55	56	56	57	57	57	56	56	56	55	55	55	55	55	56	55	54	57	57	58	58
Mon	57	57	57	57	57	58	58	59	59	60	61	61	61	61	61	61	61	61	61	61	59	58	57	57
Tue	57	57	57	56	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana100%148
UnhealthyTidak Sihat0%0
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 148 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 Bahru124.4 API
UnhealthyLive status →
Kuala Lumpur120.5 API
UnhealthyLive status →
Kuching80.1 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	76	75	75	75	76	76	76	77	77	77	77	78	79	80	81	80	78	75	73	70	69	69	69	68
Thu	67	66	66	64	63	62	62	61	60	59	59	58	56	55	54	54	55	54	55	56	57	60	61	62
Fri	63	64	64	65	66	67	67	68	69	70	70	70	70	70	71	70	70	70	70	70	70	67	66	65
Sat	64	64	63	62	61	60	59	59	58	57	57	57	57	56	55	55	55	55	54	54	53	53	53	54
Sun	54	54	55	55	56	56	57	57	57	56	56	56	55	55	55	55	55	56	55	54	57	57	58	58
Mon	57	57	57	57	57	58	58	59	59	60	61	61	61	61	61	61	61	61	61	61	59	58	57	57
Tue	57	57	57	56	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	76	75	75	75	76	76	76	77	77	77	77	78	79	80	81	80	78	75	73	70	69	69	69	68
Thu	67	66	66	64	63	62	62	61	60	59	59	58	56	55	54	54	55	54	55	56	57	60	61	62
Fri	63	64	64	65	66	67	67	68	69	70	70	70	70	70	71	70	70	70	70	70	70	67	66	65
Sat	64	64	63	62	61	60	59	59	58	57	57	57	57	56	55	55	55	55	54	54	53	53	53	54
Sun	54	54	55	55	56	56	57	57	57	56	56	56	55	55	55	55	55	56	55	54	57	57	58	58
Mon	57	57	57	57	57	58	58	59	59	60	61	61	61	61	61	61	61	61	61	61	59	58	57	57
Tue	57	57	57	56	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—