21 – 27 Oct 2026 · Malaysia

Sungai Petani weekly air quality

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

60.4Weekly mean AQI · Moderate

Official DOE API mean: 50.4. 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

150 eligible observations · 0 excluded.

-31.7 AQI compared with the previous week’s eligible mean of 92.1.

Peak AQI: 83 at Sungai Petani · 21 Oct 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 33High 83AQI

21 Oct27 Oct

27 OctDaily mean · Peak 4540.3Avg AQI

Based on 6 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
2026-10-21	72.3Moderate	83	24 / 0
2026-10-22	74.9Moderate	77	24 / 0
2026-10-23	69.2Moderate	71	24 / 0
2026-10-24	65.4Moderate	71	24 / 0
2026-10-25	44.5Good	55	24 / 0
2026-10-26	41.2Good	45	24 / 0
2026-10-27	40.3Good	45	6 / 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
2026-10-21	83	80	78	77	74	71	70	68	68	67	67	68	67	67	68	70	71	72	72	72	74	77	77	77
2026-10-22	77	77	77	77	77	77	77	75	75	75	75	77	77	77	77	74	74	74	74	74	71	70	70	70
2026-10-23	68	70	70	70	68	68	68	68	68	70	71	71	70	70	70	68	67	67	67	68	70	71	71	71
2026-10-24	71	71	71	70	70	71	71	71	70	68	67	67	67	65	65	64	62	62	61	59	58	57	56	55
2026-10-25	55	53	53	53	52	52	51	51	49	47	45	40	38	38	37	38	38	38	41	40	37	38	41	42
2026-10-26	42	44	42	42	42	41	42	42	41	41	42	45	44	42	44	44	42	41	40	40	38	38	36	33
2026-10-27	34	38	40	41	44	45	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 46

Moderate: 104

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

Sungai Petani air quality.
Weekly station review.

21 – 27 Oct 20267 days · Kedah

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Sungai Petani, Kedah

During the week of 21 – 27 Oct 2026, air quality at Sungai Petani averaged an Air Pollutant Index (API) of 50.4 (Moderate). Readings peaked at 69.

Station weekly average

50.4API

Moderate · Sederhana

Daily averages30.5 – 63.6 APIWed → Tue

Explore the week

Week's peak reading: 69ModeratePeak during 7-day window
Rank in Kedah: #4of 4 stationsState avg: 44.2 API
Good to Moderate air: 100%of hourly readings150 readings recorded
National standing: #8of 68 stationsNational avg: 83.4 API

Seven days of station air quality

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, 21 Oct	61.8	58	69
Thu, 22 Oct	63.6	60	65
Fri, 23 Oct	59.6	58	61
Sat, 24 Oct	57	48	61
Sun, 25 Oct	34.3	28	46
Mon, 26 Oct	31.2	25	34
Tue, 27 Oct	30.5	26	34

The week, hour by hour

Bacaan setiap jam dari tengah malam hingga 11 malam

Read each row from midnight to 11pm, in Malaysia Time. Hourly air quality at Sungai Petani shows local patterns like traffic peaks and afternoon haze accumulation.

020406080APIBrighter cells ran hazier than the rest of this week (25 – 69 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 69 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	69	67	66	65	63	61	60	59	59	58	58	59	58	58	59	60	61	62	62	62	63	65	65	65
Thu	65	65	65	65	65	65	65	64	64	64	64	65	65	65	65	63	63	63	63	63	61	60	60	60
Fri	59	60	60	60	59	59	59	59	59	60	61	61	60	60	60	59	58	58	58	59	60	61	61	61
Sat	61	61	61	60	60	61	61	61	60	59	58	58	58	57	57	56	55	55	54	53	52	51	50	48
Sun	46	43	43	42	41	41	39	39	37	35	34	30	29	29	28	29	29	29	31	30	28	29	31	32
Mon	32	33	32	32	32	31	32	32	31	31	32	34	33	32	33	33	32	31	30	30	29	29	27	25
Tue	26	29	30	31	33	34	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik37%56
ModerateSederhana63%94
UnhealthyTidak Sihat0%0
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 150 hourly station readings.

What it meant for this area

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

Nearby monitoring stations around Sungai Petani

Perbandingan purata mingguan dengan stesen berhampiran

Seberang Jaya54.2 API
Moderate27 away
Kulim Hi-Tech47.9 API
Good29 away
Seberang Perai67.9 API
Moderate33 away
Minden50.8 API
Moderate35 away

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	69	67	66	65	63	61	60	59	59	58	58	59	58	58	59	60	61	62	62	62	63	65	65	65
Thu	65	65	65	65	65	65	65	64	64	64	64	65	65	65	65	63	63	63	63	63	61	60	60	60
Fri	59	60	60	60	59	59	59	59	59	60	61	61	60	60	60	59	58	58	58	59	60	61	61	61
Sat	61	61	61	60	60	61	61	61	60	59	58	58	58	57	57	56	55	55	54	53	52	51	50	48
Sun	46	43	43	42	41	41	39	39	37	35	34	30	29	29	28	29	29	29	31	30	28	29	31	32
Mon	32	33	32	32	32	31	32	32	31	31	32	34	33	32	33	33	32	31	30	30	29	29	27	25
Tue	26	29	30	31	33	34	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	69	67	66	65	63	61	60	59	59	58	58	59	58	58	59	60	61	62	62	62	63	65	65	65
Thu	65	65	65	65	65	65	65	64	64	64	64	65	65	65	65	63	63	63	63	63	61	60	60	60
Fri	59	60	60	60	59	59	59	59	59	60	61	61	60	60	60	59	58	58	58	59	60	61	61	61
Sat	61	61	61	60	60	61	61	61	60	59	58	58	58	57	57	56	55	55	54	53	52	51	50	48
Sun	46	43	43	42	41	41	39	39	37	35	34	30	29	29	28	29	29	29	31	30	28	29	31	32
Mon	32	33	32	32	32	31	32	32	31	31	32	34	33	32	33	33	32	31	30	30	29	29	27	25
Tue	26	29	30	31	33	34	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—