30 Sep – 6 Oct 2026 · Malaysia

Malaysia weekly air quality

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

98.9Weekly mean AQI · Moderate

Official DOE API mean: 84.1. 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

11408 eligible observations · 1 excluded.

+8.8 AQI compared with the previous week’s eligible mean of 90.1.

Peak AQI: 236 at Batu Pahat · 6 Oct 2026, 22:00 (UTC+8).

Daily US AQI (PM2.5)

Low 28High 236AQI

30 Sept6 Oct

6 OctDaily mean · Peak 236115.3Avg AQI

Based on 1632 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	116.4Unhealthy for Sensitive Groups	189	1632 / 0
2026-10-01	89.1Moderate	163	1632 / 0
2026-10-02	83.5Moderate	144	1629 / 1
2026-10-03	84.7Moderate	158	1620 / 0
2026-10-04	98.3Moderate	158	1631 / 0
2026-10-05	104.7Unhealthy for Sensitive Groups	173	1632 / 0
2026-10-06	115.3Unhealthy for Sensitive Groups	236	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
2026-09-30	128.1	127.4	126.9	126.5	125.9	125.2	124.5	123.8	123	121.9	121	119.9	118.1	116	114	112	110	108.6	107	105.5	103.8	102.5	101.4	100.4
2026-10-01	99.3	98.4	97.3	96.1	95	93.8	92.8	91.7	90.6	89.5	88.6	87.6	87	86.4	86	85.1	84.8	84.5	83.9	83.8	83.8	83.9	84	84.1
2026-10-02	84.3	84.1	84.2	84.4	84.6	84.6	84.6	84.6	84.4	84.1	83.7	83.5	83	82.9	82.8	82.9	82.8	82.5	82.2	82.3	82.5	82.4	83	82.8
2026-10-03	82.6	82.6	82.3	82.1	81.8	81.9	82.1	82.3	82.6	82.9	83.3	83.6	83.6	84.2	84.7	85.1	85.7	86.3	87	87.9	88.4	89	89.8	90.6
2026-10-04	91.6	92.1	93	93.9	94.7	95.5	96.2	96.6	97.1	97.3	97.9	98.3	98.6	99.1	99.6	100.1	100.7	101.3	101.8	102.1	102.3	102.5	102.6	102.8
2026-10-05	102.8	102.6	102.6	102.4	102.2	102.1	102.3	102.5	102.8	103.4	103.7	104.2	104.6	104.9	105.5	106	106.4	106.8	107	107.3	107.5	107.6	107.7	107.8
2026-10-06	108	108.2	108.7	109.1	109.7	110	110.2	110.4	110.6	111.1	111.9	112.8	114	115.1	116.4	117.9	119.1	120.3	121.5	122.5	123.5	124.4	125.5	126.4

Observation categories

Good: 207

Moderate: 6562

Unhealthy for Sensitive Groups: 3223

Unhealthy: 1400

Very Unhealthy: 16

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
Pasir Gudang	142.6Unhealthy for Sensitive Groups	179	130.2	168 / 0
Nilai	141.8Unhealthy for Sensitive Groups	193	129.8	168 / 0
Larkin	140.7Unhealthy for Sensitive Groups	175	129.3	168 / 0
Cheras	140.6Unhealthy for Sensitive Groups	182	124.5	168 / 0
JOHAN SETIA	136.7Unhealthy for Sensitive Groups	189	121.8	168 / 0
Batu Pahat	135.6Unhealthy for Sensitive Groups	236	122.9	167 / 1
Putrajaya	133.6Unhealthy for Sensitive Groups	182	120.9	168 / 0
Shah Alam	130.4Unhealthy for Sensitive Groups	184	110.6	168 / 0
Seremban	130.4Unhealthy for Sensitive Groups	186	114	168 / 0
Batu Muda	130Unhealthy for Sensitive Groups	177	109.1	168 / 0
Segamat	124.9Unhealthy for Sensitive Groups	184	110.3	168 / 0
Bandaraya Melaka	122.3Unhealthy for Sensitive Groups	175	101.9	168 / 0
Kluang	121.4Unhealthy for Sensitive Groups	177	106.5	168 / 0
Tangkak	121Unhealthy for Sensitive Groups	184	105.1	168 / 0
IPD Serian	120.8Unhealthy for Sensitive Groups	167	99.6	168 / 0
Bukit Rambai	120.3Unhealthy for Sensitive Groups	171	98.6	168 / 0
Klang	118.5Unhealthy for Sensitive Groups	173	103.5	168 / 0
Kota Tinggi	118.5Unhealthy for Sensitive Groups	166	103	168 / 0
Pengerang	116.8Unhealthy for Sensitive Groups	166	100.9	168 / 0
Petaling Jaya	116.3Unhealthy for Sensitive Groups	174	99.8	168 / 0
Banting	116.2Unhealthy for Sensitive Groups	171	96.3	168 / 0
Samarahan	111.6Unhealthy for Sensitive Groups	152	90.3	168 / 0
Alor Gajah	111Unhealthy for Sensitive Groups	171	91.3	168 / 0
Port Dickson	110.2Unhealthy for Sensitive Groups	169	91.6	168 / 0
Balok Baru Kuantan	108.2Unhealthy for Sensitive Groups	169	96.4	168 / 0
Sri Aman	107.7Unhealthy for Sensitive Groups	152	88.2	168 / 0
Indera Mahkota Kuantan	106.5Unhealthy for Sensitive Groups	167	93	168 / 0
Rompin	105.8Unhealthy for Sensitive Groups	159	90.2	168 / 0
Kuching	104.9Unhealthy for Sensitive Groups	139	81.5	168 / 0
Kemaman	102.9Unhealthy for Sensitive Groups	158	88.2	168 / 0
Kuala Terengganu	102.2Unhealthy for Sensitive Groups	159	86.9	168 / 0
Paka	99.3Moderate	160	84.7	168 / 0
Tawau	99.2Moderate	146	79.5	168 / 0
Seri Manjung	98.3Moderate	163	81.9	168 / 0
Jerantut	98.3Moderate	165	82.9	168 / 0
Tasek Ipoh	95.9Moderate	134	76.8	168 / 0
Tanjung Malim	95.4Moderate	156	81	168 / 0
Bintulu	91.7Moderate	122	74.3	168 / 0
Kuala Selangor	90.8Moderate	162	77	168 / 0
Pegoh Ipoh	90.3Moderate	128	73.8	168 / 0
Temerloh	89Moderate	162	74.3	168 / 0
Kota Bharu	87.3Moderate	145	71.7	168 / 0
Samalaju	86.7Moderate	124	71.2	168 / 0
Seberang Perai	86.4Moderate	132	70.9	168 / 0
Sarikei	85.6Moderate	117	69.9	168 / 0
Besut	84.7Moderate	136	69.6	168 / 0
Sungai Petani	84.2Moderate	134	69.7	168 / 0
Seberang Jaya	83.7Moderate	139	69.2	168 / 0
Sibu	83.5Moderate	105	69.1	168 / 0
Minden	82.9Moderate	155	69.7	168 / 0
Kapit	82.1Moderate	105	68.4	168 / 0
Mukah	79.8Moderate	111	66.6	168 / 0
Tanah Merah	78Moderate	99	65.8	168 / 0
Taiping	77.8Moderate	111	65.3	168 / 0
Miri	76.5Moderate	115	63.9	168 / 0
Alor Setar	71Moderate	101	60.8	168 / 0
Keningau	71Moderate	90	61	168 / 0
Politeknik Kota Kinabalu	71Moderate	87	60.4	168 / 0
Kulim Hi-Tech	69.5Moderate	113	59.7	168 / 0
Balik Pulau	68.4Moderate	152	57.9	168 / 0
ILP Miri	68Moderate	99	57.4	168 / 0
Labuan	67.6Moderate	80	58.4	168 / 0
Sandakan	67.2Moderate	84	57.8	168 / 0
Kimanis	62.6Moderate	72	55.2	168 / 0
Langkawi	62.4Moderate	124	50.2	168 / 0
Limbang	62.1Moderate	78	52.1	168 / 0
Kota Kinabalu	61.4Moderate	91	51.6	153 / 0
Kangar	59.4Moderate	96	49.8	168 / 0

States by US AQI

State	Mean AQI	Official API mean	Eligible / excluded
Kuala Lumpur	135.3	116.8	336 / 0
Putrajaya	133.6	120.9	168 / 0
Johor	127.7	113.5	1343 / 1
Negeri Sembilan	127.5	111.8	504 / 0
Selangor	118.2	101.5	1008 / 0
Melaka	117.9	97.3	504 / 0
Pahang	101.6	87.4	840 / 0
Terengganu	97.3	82.4	672 / 0
Perak	91.5	75.8	840 / 0
Sarawak	89.3	73.3	2184 / 0
Kelantan	82.6	68.8	336 / 0
Penang	80.3	66.9	672 / 0
Sabah	72.2	61.1	993 / 0
Kedah	71.8	60.1	672 / 0
Labuan	67.6	58.4	168 / 0
Perlis	59.4	49.8	168 / 0

Malaysia air quality.
The week in review.

30 Sep – 6 Oct 20267 days · Malaysia Time

Laporan mingguan Indeks Pencemaran Udara (IPU) dan jerebu Malaysia

During the week of 30 Sep – 6 Oct 2026, Malaysia recorded an overall average Air Pollutant Index (API) of 84.1 (Moderate).

National weekly average

84.1API

Moderate · Sederhana

6.6 API hazier than the week before, which averaged 77.5

Daily averages68.8 – 103.8 APIWed → Tue

Explore the week

Week's highest reading: 211Batu Pahat, Johor23:00 MYT, 6 Oct 2026
Cleanest average: 49.8Kangar, PerlisGood weekly average
Good to Moderate air: 83%of all hourly readings11,409 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, 30 Sep	103.8	29	179
Thu, 1 Oct	75.2	33	160
Fri, 2 Oct	68.8	28	124
Sat, 3 Oct	70.9	30	156
Sun, 4 Oct	81	31	156
Mon, 5 Oct	87	30	167
Tue, 6 Oct	101.8	21	211

Where the haze sat

Taburan kualiti udara mengikut negeri dan stesen

Peak: Batu Pahat · 211

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

0255075100125State 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.

0255075100125APIBrighter cells ran hazier than the rest of this week (67.9 – 117.1 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 117.1 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	117.1	116.8	116.5	116.2	115.6	114.6	113.6	112.5	111.1	109.5	108.5	107.8	105.1	102	99.7	97.5	95.7	94.5	93.1	91.8	90.2	88.8	87.6	86.6
Thu	85.5	84.1	82.7	81.7	81	80	79	77.9	76.9	75.9	74.9	74.3	73.8	73.3	72.8	72	71.2	70.5	69.8	69.4	69.4	69.4	69.5	69.5
Fri	69.6	69.3	69.2	69.3	69.3	69.4	69.3	69.4	69.3	69.1	68.9	68.9	68.5	68.3	68.1	68.2	68.2	68	67.9	68	68.3	68.3	68.8	68.6
Sat	68.6	68.8	68.7	68.6	68.4	68.6	69	69.3	69.7	70.2	70.5	70.9	71.1	71.5	71.8	72	72.3	72.3	72.4	72.7	73	73.3	73.8	74.3
Sun	74.9	75.3	76.2	77.3	78.4	79.4	80.1	80.7	80.9	80.9	81.2	81.7	82.1	82.4	82.5	82.8	83	83.3	83.3	83.2	83.1	83.5	84.1	84.4
Mon	84.5	84.5	84.8	84.9	84.7	84.5	84.5	84.6	84.8	85.1	85.3	85.6	86.1	86.5	87.3	88.3	88.9	89.1	89.5	90.1	90.8	91	91.4	91.7
Tue	91.9	92.3	92.8	92.9	93.4	93.6	93.9	94.5	95.5	96.8	98.1	99.7	101.2	103.3	105	106.4	107.8	109	110.4	111.4	112	112.9	113.9	114.9

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik5%588
ModerateSederhana78%8,908
UnhealthyTidak Sihat17%1,909
Very UnhealthySangat Tidak Sihat0%4
HazardousBerbahaya0%0

Based on 11,409 hourly station readings.

What it meant for your week

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

States ranked by weekly average

Kedudukan negeri mengikut purata IPU mingguan

Marker shows each state's peak

Putrajaya120.9Unhealthy · 1 station
Kuala Lumpur116.8Unhealthy · 2 stations
Johor113.5Unhealthy · 8 stations
Negeri Sembilan111.8Unhealthy · 3 stations
Selangor101.5Unhealthy · 6 stations
Melaka97.3Moderate · 3 stations
Pahang87.4Moderate · 5 stations
Terengganu82.4Moderate · 4 stations
Perak75.8Moderate · 5 stations
Sarawak73.3Moderate · 13 stations
Kelantan68.8Moderate · 2 stations
Penang66.9Moderate · 4 stations
Sabah61.1Moderate · 6 stations
Kedah60.1Moderate · 4 stations
Labuan58.4Moderate · 1 station
Perlis49.8Good · 1 station

Cleanest air of the week

Lima stesen dengan purata IPU terendah

Scale 0 – 250

Kangar49.8avg
Perlis
23Good78
Langkawi50.2avg
Kedah
29Moderate93
Kota Kinabalu51.6avg
Sabah
28Moderate75
Limbang52.1avg
Sarawak
33Moderate66
Kimanis55.2avg
Sabah
51Moderate62

Highest readings of the week

Lima stesen dengan bacaan IPU tertinggi

Scale 0 – 250

Batu Pahat211peak
Johor
64Unhealthy211
Nilai182peak
Negeri Sembilan
75Unhealthy182
JOHAN SETIA179peak
Selangor
64Unhealthy179
Seremban177peak
Negeri Sembilan
66Unhealthy177
Shah Alam175peak
Selangor
72Unhealthy175

Major cities

Purata dan puncak mingguan bagi bandar utama Malaysia

Johor BahruJohor129.3Unhealthy · Tidak SihatPeak 169Larkin
Kuala LumpurKuala Lumpur124.5Unhealthy · Tidak SihatPeak 174Cheras
KuchingSarawak81.5Moderate · SederhanaPeak 107Kuching
Alor SetarKedah60.8Moderate · SederhanaPeak 81Alor Setar
Kota BharuKelantan71.7Moderate · SederhanaPeak 131Kota Bharu
MelakaMelaka101.9Unhealthy · Tidak SihatPeak 169Bandaraya Melaka
SerembanNegeri Sembilan114Unhealthy · Tidak SihatPeak 177Seremban
KuantanPahang93Moderate · SederhanaPeak 163Indera Mahkota Kuantan
George TownPulau Pinang69.7Moderate · SederhanaPeak 154Minden
IpohPerak76.8Moderate · SederhanaPeak 98Tasek Ipoh
KangarPerlis49.8Good · BaikPeak 78Kangar
Kota KinabaluSabah51.6Moderate · SederhanaPeak 75Kota Kinabalu
Shah AlamSelangor110.6Unhealthy · Tidak SihatPeak 175Shah Alam
Kuala TerengganuTerengganu86.9Moderate · SederhanaPeak 157Kuala 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 30 Sep – 6 Oct 2026, the latest Wednesday-to-Tuesday reporting week in Malaysia Time. The national weekly average of 84.1 API falls in the Moderate 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 211 API at Batu Pahat in Johor. 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 11,409 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 30 Sep – 6 Oct 2026, Malaysia averaged an Air Pollutant Index of 84.1, which sits in the Moderate band (Sederhana). 83% of all hourly readings stayed within Good or Moderate.

Where was the cleanest air recorded?

Kangar in Perlis held the lowest weekly average at API 49.8 (Good).

Which area had the worst haze?

The single highest reading of the week was API 211 (Very Unhealthy) at Batu Pahat, Johor, recorded at 23:00 MYT, 6 Oct 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.