16 – 22 Sep 2026 · Malaysia

Malaysia weekly air quality

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

111.3Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 102. 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

7963 eligible observations · 3414 excluded.

Peak AQI: 222 at JOHAN SETIA · 18 Sept 2026, 07:00 (UTC+8).

Daily US AQI (PM2.5)

Low 17High 222AQI

16 Sept22 Sept

22 SeptDaily mean · Peak 18998.9Avg AQI

Based on 1632 hourly readings.

5 of 7 days recorded.

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
2026-09-16	—Unavailable	—	0 / 1632
2026-09-17	—Unavailable	—	0 / 1632
2026-09-18	127.8Unhealthy for Sensitive Groups	222	1496 / 135
2026-09-19	108.2Unhealthy for Sensitive Groups	190	1609 / 6
2026-09-20	115.2Unhealthy for Sensitive Groups	194	1606 / 2
2026-09-21	108.1Unhealthy for Sensitive Groups	181	1620 / 7
2026-09-22	98.9Moderate	189	1632 / 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
2026-09-16	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
2026-09-17	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
2026-09-18	—	—	130.1	130.6	130.9	131.1	131.3	131.5	131.4	131	130.4	129.9	129.7	129	128.7	127.9	126.8	125.6	125	124.2	122.9	121.9	120.9	119.9
2026-09-19	118.7	117.6	116.3	114.8	113.3	111.6	110.1	108	106.8	106.3	105.7	105.5	104.9	104.3	103.3	103	104.5	104.8	106.2	106.6	104.8	105.7	106.7	107.4
2026-09-20	108.3	109.1	110.1	110.8	111.9	112.8	113.7	114.1	114.7	114.9	115.4	115.8	116.2	116.5	117.4	118.1	118.4	118.8	118.8	118.6	118.2	118.7	117.5	115.4
2026-09-21	114.6	113.7	112.9	112.3	111.4	110.3	109.7	109	108.5	108.2	107.8	107.4	107.4	106.8	106.3	105.6	106.4	106	105.7	105.2	104.8	104.7	104.7	103.8
2026-09-22	103.9	103.8	103.9	103.9	103.8	103.8	103.5	103.3	102.9	102.1	101.2	100.5	99.2	98	97.1	95.8	94.6	94.1	93.6	93.3	93	93.1	92.5	92

Observation categories

Good: 230

Moderate: 3280

Unhealthy for Sensitive Groups: 2447

Unhealthy: 1986

Very Unhealthy: 20

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

Stations by US AQI

Sorted by eligible mean AQI. Counts show the available coverage.

Location	Mean AQI	Peak AQI	Official DOE API mean	Eligible / excluded
IPD Serian	177.1Unhealthy	196	150.4	118 / 50
Kuching	172.4Unhealthy	210	149.5	118 / 50
Samarahan	168.2Unhealthy	197	144	118 / 50
Sri Aman	166.6Unhealthy	189	136.3	118 / 50
Sibu	165.1Unhealthy	188	134.4	118 / 50
Nilai	155.7Unhealthy	192	152.9	118 / 50
Bintulu	155.5Unhealthy	166	124.3	118 / 50
Putrajaya	154.9Unhealthy	185	153.6	118 / 50
Shah Alam	152.4Unhealthy	179	151.5	118 / 50
JOHAN SETIA	151.9Unhealthy	222	145.4	118 / 50
Cheras	151.3Unhealthy	174	151.4	118 / 50
Sarikei	149.5Unhealthy for Sensitive Groups	170	112.5	118 / 50
Mukah	149.1Unhealthy for Sensitive Groups	179	103.8	72 / 49
Kapit	143.1Unhealthy for Sensitive Groups	181	104.9	118 / 50
Petaling Jaya	139.6Unhealthy for Sensitive Groups	170	128.4	118 / 50
Bukit Rambai	138.4Unhealthy for Sensitive Groups	166	131.9	118 / 50
Seremban	138.1Unhealthy for Sensitive Groups	178	134.7	118 / 50
Samalaju	138.1Unhealthy for Sensitive Groups	160	102.4	118 / 50
Batu Pahat	136.8Unhealthy for Sensitive Groups	156	127.4	118 / 50
Batu Muda	134.5Unhealthy for Sensitive Groups	175	129.1	118 / 50
Larkin	134.4Unhealthy for Sensitive Groups	166	112.7	118 / 50
Tangkak	132.2Unhealthy for Sensitive Groups	163	123.5	118 / 50
Bandaraya Melaka	128.4Unhealthy for Sensitive Groups	155	119.5	118 / 50
Segamat	126.5Unhealthy for Sensitive Groups	165	112.2	118 / 50
Banting	125.3Unhealthy for Sensitive Groups	173	120.2	118 / 50
Klang	123.3Unhealthy for Sensitive Groups	166	115.9	118 / 50
Miri	122.3Unhealthy for Sensitive Groups	160	90.3	118 / 50
Seri Manjung	122.1Unhealthy for Sensitive Groups	185	128.4	118 / 50
Pasir Gudang	121.1Unhealthy for Sensitive Groups	158	102.9	118 / 50
Alor Gajah	121Unhealthy for Sensitive Groups	170	114.5	118 / 50
Port Dickson	120.2Unhealthy for Sensitive Groups	163	108.7	118 / 50
Politeknik Kota Kinabalu	119.1Unhealthy for Sensitive Groups	159	89	118 / 50
Kluang	116.2Unhealthy for Sensitive Groups	154	105.4	118 / 50
ILP Miri	112.8Unhealthy for Sensitive Groups	155	79.6	118 / 50
Tanjung Malim	109.5Unhealthy for Sensitive Groups	154	111.2	118 / 50
Kuala Selangor	108.8Unhealthy for Sensitive Groups	150	101.1	118 / 50
Tawau	106.8Unhealthy for Sensitive Groups	148	82.9	118 / 50
Limbang	103.6Unhealthy for Sensitive Groups	144	73	118 / 50
Labuan	103.1Unhealthy for Sensitive Groups	136	72.7	118 / 50
Rompin	100.9Unhealthy for Sensitive Groups	143	84.3	118 / 50
Kota Tinggi	100.7Unhealthy for Sensitive Groups	143	81.2	118 / 50
Indera Mahkota Kuantan	100.7Unhealthy for Sensitive Groups	141	91	118 / 50
Balok Baru Kuantan	100.5Unhealthy for Sensitive Groups	142	90.1	118 / 50
Kota Kinabalu	99.8Moderate	150	67.3	118 / 50
Tasek Ipoh	98.5Moderate	188	112.9	118 / 50
Pengerang	95.4Moderate	124	77.7	118 / 50
Pegoh Ipoh	95.1Moderate	156	102.6	118 / 50
Temerloh	92.7Moderate	156	95.9	118 / 50
Kemaman	87.4Moderate	118	84.7	118 / 50
Jerantut	86.5Moderate	154	95	118 / 50
Paka	85.5Moderate	107	83.1	118 / 50
Kuala Terengganu	82.1Moderate	140	93.6	118 / 50
Keningau	81.5Moderate	109	62.8	118 / 50
Sandakan	79.6Moderate	99	59.9	118 / 50
Taiping	78.8Moderate	148	93.1	118 / 50
Kimanis	74.8Moderate	88	62.2	118 / 50
Minden	71.9Moderate	138	88.9	118 / 50
Kota Bharu	71.2Moderate	120	70.3	118 / 50
Sungai Petani	70.9Moderate	151	88.6	118 / 50
Seberang Jaya	69.5Moderate	132	86.5	118 / 50
Seberang Perai	68.6Moderate	132	85.3	118 / 50
Kulim Hi-Tech	64.5Moderate	111	77.3	118 / 50
Besut	62.4Moderate	105	68.8	116 / 52
Tanah Merah	60.2Moderate	93	71.5	118 / 50
Alor Setar	59Moderate	111	62.4	118 / 50
Balik Pulau	56.9Moderate	84	72.2	111 / 57
Kangar	46.6Good	80	49.7	116 / 52
Langkawi	41.5Good	72	46.5	114 / 54

States by US AQI

State	Mean AQI	Official API mean	Eligible / excluded
Putrajaya	154.9	153.6	118 / 50
Sarawak	147.9	116.1	1488 / 649
Kuala Lumpur	142.9	140.3	236 / 100
Negeri Sembilan	138	132.1	354 / 150
Selangor	133.6	127.1	708 / 300
Melaka	129.3	122	354 / 150
Johor	120.4	105.4	944 / 400
Labuan	103.1	72.7	118 / 50
Perak	100.8	109.6	590 / 250
Pahang	96.3	91.2	590 / 250
Sabah	93.6	70.7	708 / 300
Terengganu	79.4	82.6	470 / 202
Penang	66.9	83.2	465 / 207
Kelantan	65.7	70.9	236 / 100
Kedah	59.1	68.7	468 / 204
Perlis	46.6	49.7	116 / 52

Malaysia air quality.
The week in review.

16 – 22 Sep 20267 days · Malaysia Time

Laporan mingguan Indeks Pencemaran Udara (IPU) dan jerebu Malaysia

During the week of 16 – 22 Sep 2026, Malaysia recorded an overall average Air Pollutant Index (API) of 102 (Unhealthy).

National weekly average

102API

Unhealthy · Tidak Sihat

9.3 API hazier than the week before, which averaged 92.7

Daily averages85.5 – 118 APIWed → Tue

Explore the week

Week's highest reading: 198JOHAN SETIA, Selangor08:00 MYT, 18 Sept 2026
Cleanest average: 46.5Langkawi, KedahGood weekly average
Good to Moderate air: 62%of all hourly readings11,377 readings in total
Stations reporting: 68of 68 DOE stations16 states and territories

Seven days of national 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 · 0–250 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, 16 Sep	118	24	187
Thu, 17 Sep	108.2	22	188
Fri, 18 Sep	115.6	20	198
Sat, 19 Sep	92.9	13	180
Sun, 20 Sep	99.8	20	183
Mon, 21 Sep	94.1	24	173
Tue, 22 Sep	85.5	32	179

Where the haze sat

Taburan kualiti udara mengikut negeri dan stesen

Peak: JOHAN SETIA · 198

Compare weekly station averages across Peninsular Malaysia, Sabah and Sarawak. Each dot represents a monitoring station. Use the state rankings below to compare regional averages with the highest reading in each state.

Peninsular Malaysia · Semenanjung Malaysia

Sabah, Sarawak & Labuan · Borneo Malaysia

0255075100125150175State average APIOne DOE station, sized and shaded by its weekly average

The week, hour by hour

Purata kebangsaan bagi setiap jam sepanjang tujuh hari

Read each row from midnight to 11pm, in Malaysia Time. The hourly national average helps identify when readings rose or fell during the week. Empty cells mean no hourly figure is available.

050100150APIBrighter cells ran hazier than the rest of this week (80.6 – 123.8 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 123.8 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	123.8	123.2	122.9	122.7	122.7	122.8	122.6	122.3	122.2	122.2	121.3	120.4	119.4	118.4	117.8	117.1	115.8	114.5	112.7	111.1	110.2	109.3	108.3	107.6
Thu	107	106.3	105.6	105.1	104.7	104.4	104.3	104.4	104	103.6	104.5	105.4	106.1	107.6	108.1	109.2	110.1	111	111.8	113.1	114	115	115.2	115.4
Fri	116.3	116.7	117.2	117.7	117.8	118	117.8	117.9	117.9	117.8	117.7	117.6	117.9	117.4	117.2	116.3	115	113.9	113.6	113.1	111.8	110.4	109	107.4
Sat	106.1	104.9	103.8	102	99.7	97.6	95.4	92.8	91.7	91	90.6	90.1	89.1	87.7	86.4	86.4	87	87.3	87.9	88.7	89.5	90.3	91.3	91.8
Sun	92.6	93	93.8	94.1	95	95.7	96.6	97	97.3	97.5	98.1	100	100.7	101	102.7	103.9	104.8	105.5	105.6	105.4	105.2	104.6	103.4	102.6
Mon	102	101.6	100.8	100	99.1	97.8	96.9	95.7	95	94.1	93.6	92.7	92.6	92.2	91.7	90.6	90.6	90.8	90.6	90	89.7	89.7	89.9	90.2
Tue	90.4	90.4	90.5	90.5	90.5	90.5	90.1	89.4	88.3	87.1	86.2	85.4	84.5	83.8	83.3	82.5	81.4	81.3	81.3	81.3	81.3	81.3	81	80.6

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik8%912
ModerateSederhana54%6,114
UnhealthyTidak Sihat38%4,351
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 11,377 hourly station readings.

What it meant for your week

Panduan kesihatan mengikut kategori kualiti udara

Limit prolonged outdoor activity. Children, older adults, pregnant women and people with respiratory or heart conditions should stay indoors where possible. A well-fitted N95 mask helps outdoors.

Hadkan aktiviti luar yang berpanjangan. Kanak-kanak, warga emas, ibu mengandung dan pesakit pernafasan atau jantung dinasihatkan berada di dalam bangunan. Pelitup muka N95 membantu di luar.

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

States ranked by weekly average

Kedudukan negeri mengikut purata IPU mingguan

Marker shows each state's peak

Putrajaya153.6Unhealthy · 1 station
Kuala Lumpur140.3Unhealthy · 2 stations
Negeri Sembilan132.1Unhealthy · 3 stations
Selangor127.1Unhealthy · 6 stations
Melaka122Unhealthy · 3 stations
Sarawak116.1Unhealthy · 13 stations
Perak109.6Unhealthy · 5 stations
Johor105.4Unhealthy · 8 stations
Pahang91.3Moderate · 5 stations
Penang83.2Moderate · 4 stations
Terengganu82.6Moderate · 4 stations
Labuan72.7Moderate · 1 station
Kelantan70.9Moderate · 2 stations
Sabah70.7Moderate · 6 stations
Kedah68.7Moderate · 4 stations
Perlis49.7Good · 1 station

Cleanest air of the week

Lima stesen dengan purata IPU terendah

Scale 0 – 200

Langkawi46.5avg
Kedah
13Good100
Kangar49.7avg
Perlis
18Good90
Sandakan59.9avg
Sabah
35Moderate80
Kimanis62.2avg
Sabah
49Moderate76
Alor Setar62.4avg
Kedah
22Moderate135

Highest readings of the week

Lima stesen dengan bacaan IPU tertinggi

Scale 0 – 200

JOHAN SETIA198peak
Selangor
75Unhealthy198
Kuching192peak
Sarawak
69Unhealthy192
Tasek Ipoh188peak
Perak
44Unhealthy188
Samarahan185peak
Sarawak
63Unhealthy185
IPD Serian184peak
Sarawak
59Unhealthy184

Major cities

Purata dan puncak mingguan bagi bandar utama Malaysia

Johor BahruJohor112.7Unhealthy · Tidak SihatPeak 162Larkin
Kuala LumpurKuala Lumpur151.4Unhealthy · Tidak SihatPeak 180Cheras
KuchingSarawak149.5Unhealthy · Tidak SihatPeak 192Kuching
Alor SetarKedah62.4Moderate · SederhanaPeak 135Alor Setar
Kota BharuKelantan70.3Moderate · SederhanaPeak 123Kota Bharu
MelakaMelaka119.5Unhealthy · Tidak SihatPeak 154Bandaraya Melaka
SerembanNegeri Sembilan134.7Unhealthy · Tidak SihatPeak 175Seremban
KuantanPahang91Moderate · SederhanaPeak 163Indera Mahkota Kuantan
George TownPulau Pinang88.9Moderate · SederhanaPeak 167Minden
IpohPerak112.9Unhealthy · Tidak SihatPeak 188Tasek Ipoh
KangarPerlis49.7Good · BaikPeak 90Kangar
Kota KinabaluSabah67.3Moderate · SederhanaPeak 149Kota Kinabalu
Shah AlamSelangor151.5Unhealthy · Tidak SihatPeak 175Shah Alam
Kuala TerengganuTerengganu93.6Moderate · SederhanaPeak 164Kuala Terengganu

Reading the report

What a week of
air quality tells us.

A closer look at Malaysia's Air Pollutant Index, known locally as Indeks Pencemaran Udara or IPU.

Malaysia's weekly API in context

This report covers 16 – 22 Sep 2026, the latest Wednesday-to-Tuesday reporting week in Malaysia Time. The national weekly average of 102 API falls in the Unhealthy category. On Tuesday, the final day's data is partial until all hourly readings arrive. It summarises the period across reporting stations; it does not describe every place at every hour.

Why averages and peaks tell different stories

A weekly average shows the level across the available readings. A peak is the highest single reading during that period, so a short rise at one station can stand out even when the weekly average is lower. For this report, the highest value is 198 API at JOHAN SETIA in Selangor. Compare the solid average line with the station peak and min–max range to see that difference.

Comparing states, stations and cities

State averages combine station averages in proportion to their reading counts. Stations with more observations contribute more to the result. City summaries use a representative monitoring station, named below each city. That station describes its monitoring location; readings can differ elsewhere in the city.

Where these numbers come from

This report uses 11,377 stored hourly readings from 68 reporting stations. The archive collects the Department of Environment Malaysia's APIMS feed. Coverage depends on the readings received during the reporting window. Missing observations can affect comparisons between places and periods.

Looking for today's haze conditions?

This is a historical weekly summary. For current conditions, open the live Malaysia air quality report or find a nearby station on the air quality map. The about page explains the source and how Haze Monitor presents the data.

Questions readers ask

Soalan lazim berkenaan jerebu dan kualiti udara Malaysia

What was Malaysia's average air quality during the latest reporting week?

Across 16 – 22 Sep 2026, Malaysia averaged an Air Pollutant Index of 102, which sits in the Unhealthy band (Tidak Sihat). 62% of all hourly readings stayed within Good or Moderate.

Where was the cleanest air recorded?

Langkawi in Kedah held the lowest weekly average at API 46.5 (Good).

Which area had the worst haze?

The single highest reading of the week was API 198 (Unhealthy) at JOHAN SETIA, Selangor, recorded at 08:00 MYT, 18 Sept 2026.

How is this report put together?

Hourly readings are collected from the Department of Environment's APIMS feed for all 68 national stations and stored as they arrive. The report advances to a new Wednesday-to-Tuesday period each Tuesday in Malaysia Time and refreshes hourly. On Tuesday, readings for the final day accumulate as they arrive. State figures weight each station by how many hours it actually reported.