14 – 20 Oct 2026 · Malaysia

Malaysia weekly air quality

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

121.5Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 108.7. 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

11420 eligible observations · 4 excluded.

-2.1 AQI compared with the previous week’s eligible mean of 123.6.

Peak AQI: 234 at Pasir Gudang · 16 Oct 2026, 10:00 (UTC+8).

Daily US AQI (PM2.5)

Low 34High 234AQI

14 Oct20 Oct

20 OctDaily mean · Peak 184115.3Avg 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
2026-10-14	125.3Unhealthy for Sensitive Groups	204	1632 / 0
2026-10-15	138.4Unhealthy for Sensitive Groups	216	1632 / 0
2026-10-16	126.6Unhealthy for Sensitive Groups	234	1632 / 0
2026-10-17	115.4Unhealthy for Sensitive Groups	224	1632 / 0
2026-10-18	114.8Unhealthy for Sensitive Groups	212	1632 / 0
2026-10-19	114.8Unhealthy for Sensitive Groups	182	1628 / 4
2026-10-20	115.3Unhealthy for Sensitive Groups	184	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
2026-10-14	118.9	119.3	119.6	119.9	120.4	120.8	121.2	121.6	122	122.7	123.3	123.9	124.8	125.3	125.9	126.9	127.6	128.3	129.3	130.3	131.7	133.1	134.3	135.3
2026-10-15	136.2	136.9	137.4	137.5	137.8	138.1	138.4	138.7	139.1	139.5	139.6	139.7	140.1	140.5	140.7	140.3	140.2	139.8	139.1	138.4	137.5	136.5	135.3	134.4
2026-10-16	133.6	133	132.6	132.1	131.7	131.4	131	130.5	130	129.4	129	128.6	127.9	126.8	126	124.8	123.5	122.5	121.3	120.1	119.3	118.5	117.8	117
2026-10-17	116.4	116	115.8	115.5	115.1	115	114.6	114.7	114.7	114.5	114.5	114.5	114.4	114.8	115.1	115.8	115.9	116	116.1	116.3	116.2	116.1	115.9	115.9
2026-10-18	115.9	115.9	115.9	115.8	115.9	115.9	115.8	115.9	115.8	115.6	115.4	115.1	114.8	114.6	114.2	113.7	113.6	113.6	113.5	113.7	113.8	113.9	113.9	113.9
2026-10-19	113.9	114	114.1	114.1	114.3	114.5	114.6	114.6	114.5	114.4	114.5	114.5	114.8	114.9	114.8	114.8	115	115.1	115.4	115.4	115.5	115.7	115.9	116.4
2026-10-20	116.4	116.5	116.5	116.8	117.2	117.4	117.4	117.6	117.8	117.8	117.7	117.3	116.6	116.3	115.5	115.3	114.5	113.9	113.3	112.6	112	111.4	110.7	109.8

Observation categories

Good: 67

Moderate: 4655

Unhealthy for Sensitive Groups: 2494

Unhealthy: 4045

Very Unhealthy: 159

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	193.2Unhealthy	234	180.6	168 / 0
Nilai	184.1Unhealthy	208	175.2	168 / 0
JOHAN SETIA	183.6Unhealthy	210	174.7	168 / 0
Larkin	181.4Unhealthy	227	172.6	168 / 0
Klang	177.8Unhealthy	216	170.4	168 / 0
Bukit Rambai	177.1Unhealthy	198	170.2	168 / 0
Seremban	176Unhealthy	194	169.5	168 / 0
Bandaraya Melaka	171.4Unhealthy	190	166	168 / 0
Shah Alam	170.8Unhealthy	194	165.6	168 / 0
Pengerang	170.2Unhealthy	192	161	168 / 0
Kota Tinggi	169.8Unhealthy	194	163.8	168 / 0
Batu Pahat	169.3Unhealthy	196	162.8	168 / 0
Putrajaya	168.9Unhealthy	189	164.2	168 / 0
Alor Gajah	168.9Unhealthy	189	164.2	168 / 0
Petaling Jaya	168Unhealthy	182	162.8	168 / 0
Cheras	167.9Unhealthy	194	163.5	168 / 0
Batu Muda	167.5Unhealthy	184	163.2	168 / 0
Tangkak	165.5Unhealthy	189	161.2	168 / 0
Banting	163.6Unhealthy	182	160.2	168 / 0
Port Dickson	162.8Unhealthy	186	156.1	168 / 0
Kluang	161Unhealthy	178	155.5	168 / 0
Segamat	146.6Unhealthy for Sensitive Groups	167	133.9	168 / 0
Rompin	139.3Unhealthy for Sensitive Groups	165	126.1	168 / 0
Seri Manjung	139.1Unhealthy for Sensitive Groups	184	116.4	168 / 0
Tanjung Malim	134.9Unhealthy for Sensitive Groups	182	114.1	164 / 4
Kuala Selangor	130.8Unhealthy for Sensitive Groups	165	109.3	168 / 0
Indera Mahkota Kuantan	128.6Unhealthy for Sensitive Groups	159	113	168 / 0
Tawau	128.3Unhealthy for Sensitive Groups	155	107.3	168 / 0
Tasek Ipoh	126.5Unhealthy for Sensitive Groups	160	109.5	168 / 0
Temerloh	123.2Unhealthy for Sensitive Groups	163	105.6	168 / 0
Pegoh Ipoh	123.1Unhealthy for Sensitive Groups	163	106.4	168 / 0
IPD Serian	122.4Unhealthy for Sensitive Groups	156	108	168 / 0
Sandakan	120.4Unhealthy for Sensitive Groups	159	103.4	168 / 0
Samarahan	117.9Unhealthy for Sensitive Groups	154	99.2	168 / 0
Paka	114.6Unhealthy for Sensitive Groups	159	98	168 / 0
Kuching	112.2Unhealthy for Sensitive Groups	158	92.7	168 / 0
Balok Baru Kuantan	111.1Unhealthy for Sensitive Groups	158	90.5	168 / 0
Jerantut	111Unhealthy for Sensitive Groups	159	95.3	168 / 0
Sri Aman	110.6Unhealthy for Sensitive Groups	154	89.3	168 / 0
Kemaman	110Unhealthy for Sensitive Groups	159	93.3	168 / 0
Seberang Perai	101.8Unhealthy for Sensitive Groups	149	83.6	168 / 0
Minden	101Unhealthy for Sensitive Groups	140	80.3	168 / 0
Seberang Jaya	98.5Moderate	132	78.7	168 / 0
Taiping	96.5Moderate	142	77.4	168 / 0
Kuala Terengganu	94.2Moderate	141	75.7	168 / 0
Sungai Petani	92.1Moderate	118	75.1	168 / 0
Samalaju	90.7Moderate	118	73.8	168 / 0
Besut	86.6Moderate	132	70.9	168 / 0
Sibu	86.6Moderate	124	71.3	168 / 0
Keningau	86.1Moderate	124	70.8	168 / 0
Kulim Hi-Tech	85.8Moderate	109	71	168 / 0
Kota Bharu	84.4Moderate	120	69.9	168 / 0
Bintulu	84.3Moderate	107	69.9	168 / 0
Politeknik Kota Kinabalu	82.8Moderate	126	68.2	168 / 0
Sarikei	80.8Moderate	103	67.7	168 / 0
Tanah Merah	80.3Moderate	113	67.1	168 / 0
Mukah	79.5Moderate	91	66.8	168 / 0
Miri	78.9Moderate	115	65.4	168 / 0
Labuan	77.2Moderate	120	64.7	168 / 0
Kapit	76.9Moderate	128	64.3	168 / 0
ILP Miri	72.4Moderate	101	60.5	168 / 0
Alor Setar	71.6Moderate	91	61.3	168 / 0
Balik Pulau	71.4Moderate	126	59.7	168 / 0
Kota Kinabalu	71.1Moderate	88	60.6	168 / 0
Kimanis	69.3Moderate	93	58.2	168 / 0
Kangar	65.5Moderate	78	57.1	168 / 0
Limbang	64.8Moderate	90	54.1	168 / 0
Langkawi	63.9Moderate	83	54.3	168 / 0

States by US AQI

State	Mean AQI	Official API mean	Eligible / excluded
Negeri Sembilan	174.3	166.9	504 / 0
Melaka	172.4	166.8	504 / 0
Johor	169.6	161.4	1344 / 0
Putrajaya	168.9	164.2	168 / 0
Kuala Lumpur	167.7	163.3	336 / 0
Selangor	165.8	157.2	1008 / 0
Perak	124	104.8	836 / 4
Pahang	122.6	106.1	840 / 0
Terengganu	101.3	84.5	672 / 0
Penang	93.2	75.6	672 / 0
Sabah	93	78.1	1008 / 0
Sarawak	90.6	75.6	2184 / 0
Kelantan	82.3	68.5	336 / 0
Kedah	78.4	65.4	672 / 0
Labuan	77.2	64.7	168 / 0
Perlis	65.5	57.1	168 / 0

Malaysia air quality.
The week in review.

14 – 20 Oct 20267 days · Malaysia Time

Laporan mingguan Indeks Pencemaran Udara (IPU) dan jerebu Malaysia

During the week of 14 – 20 Oct 2026, Malaysia recorded an overall average Air Pollutant Index (API) of 108.7 (Unhealthy).

National weekly average

108.7API

Unhealthy · Tidak Sihat

2.1 API cleaner than the week before, which averaged 110.8

Daily averages102.6 – 123.2 APIWed → Tue

Explore the week

Week's highest reading: 209Pasir Gudang, Johor10:00 MYT, 16 Oct 2026
Cleanest average: 54.1Limbang, SarawakModerate weekly average
Good to Moderate air: 59%of all hourly readings11,424 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, 14 Oct	111.3	38	189
Thu, 15 Oct	123.2	52	195
Fri, 16 Oct	114	46	209
Sat, 17 Oct	103.7	39	199
Sun, 18 Oct	103.6	39	193
Mon, 19 Oct	102.6	33	174
Tue, 20 Oct	102.6	26	175

Where the haze sat

Taburan kualiti udara mengikut negeri dan stesen

Peak: Pasir Gudang · 209

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 (97.7 – 125.2 API)

Haziest hour of the week: Thu at 14:00 MYT, averaging API 125.2 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	106.7	107.2	107.4	107.6	108.2	108.5	108.7	109	109.3	109.8	110.1	110.5	111	110.9	111	111.4	111.9	112.4	113.2	113.7	115.3	117.9	119.3	120.3
Thu	121.3	121.9	122.1	122.2	122.2	122.6	122.8	123	123.2	123.5	123.9	124.3	124.7	125	125.2	125	124.6	124.2	123.7	123.2	122.8	122.2	121.5	121
Fri	120.4	120	119.7	119.3	119	118.6	118.2	117.7	117.3	116.8	116.5	116.1	115.4	114.3	113.5	112.4	110.8	109.8	108.7	107.6	107	106.4	106	105.5
Sat	104.7	104.1	104	103.8	103.6	103.5	103.4	103.4	103.5	103.4	103.4	103.3	103.3	103.4	103.7	103.9	104	104.1	104	104	103.8	103.6	103.5	103.6
Sun	103.7	103.7	103.8	103.7	103.8	103.9	103.8	103.8	103.6	103.5	103.6	103.8	103.6	103.8	103.6	103.6	103.3	103.2	103.2	103.4	103.6	103.6	103.7	103.6
Mon	103.6	103.7	103.6	103.5	103.5	103.5	103.3	103.5	103.5	103.3	103	102.5	102.1	101.9	101.3	101.3	101.4	101.5	101.7	101.9	102.3	102.4	102.3	102.7
Tue	102.4	102.7	103.1	103.4	103.9	104.3	104.7	105	105.2	105.5	105.5	105	104	103.4	102.6	102.4	101.9	101.3	100.9	100.1	99.7	99.2	98.4	97.7

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik3%345
ModerateSederhana56%6,397
UnhealthyTidak Sihat41%4,669
Very UnhealthySangat Tidak Sihat0%13
HazardousBerbahaya0%0

Based on 11,424 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

Negeri Sembilan166.9Unhealthy · 3 stations
Melaka166.8Unhealthy · 3 stations
Putrajaya164.2Unhealthy · 1 station
Kuala Lumpur163.4Unhealthy · 2 stations
Johor161.4Unhealthy · 8 stations
Selangor157.2Unhealthy · 6 stations
Pahang106.1Unhealthy · 5 stations
Perak104.8Unhealthy · 5 stations
Terengganu84.5Moderate · 4 stations
Sabah78.1Moderate · 6 stations
Penang75.6Moderate · 4 stations
Sarawak75.6Moderate · 13 stations
Kelantan68.5Moderate · 2 stations
Kedah65.4Moderate · 4 stations
Labuan64.7Moderate · 1 station
Perlis57.1Moderate · 1 station

Cleanest air of the week

Lima stesen dengan purata IPU terendah

Scale 0 – 250

Limbang54.1avg
Sarawak
33Moderate74
Langkawi54.3avg
Kedah
32Moderate69
Kangar57.1avg
Perlis
48Moderate66
Kimanis58.2avg
Sabah
26Moderate76
Balik Pulau59.7avg
Pulau Pinang
39Moderate94

Highest readings of the week

Lima stesen dengan bacaan IPU tertinggi

Scale 0 – 250

Pasir Gudang209peak
Johor
155Unhealthy209
Larkin202peak
Johor
136Unhealthy202
Klang195peak
Selangor
152Unhealthy195
JOHAN SETIA192peak
Selangor
159Unhealthy192
Nilai191peak
Negeri Sembilan
161Unhealthy191

Major cities

Purata dan puncak mingguan bagi bandar utama Malaysia

Johor BahruJohor172.6Unhealthy · Tidak SihatPeak 202Larkin
Kuala LumpurKuala Lumpur163.5Unhealthy · Tidak SihatPeak 183Cheras
KuchingSarawak92.7Moderate · SederhanaPeak 156Kuching
Alor SetarKedah61.3Moderate · SederhanaPeak 75Alor Setar
Kota BharuKelantan69.9Moderate · SederhanaPeak 91Kota Bharu
MelakaMelaka166Unhealthy · Tidak SihatPeak 180Bandaraya Melaka
SerembanNegeri Sembilan169.5Unhealthy · Tidak SihatPeak 183Seremban
KuantanPahang113Unhealthy · Tidak SihatPeak 157Indera Mahkota Kuantan
George TownPulau Pinang80.3Moderate · SederhanaPeak 108Minden
IpohPerak109.5Unhealthy · Tidak SihatPeak 158Tasek Ipoh
KangarPerlis57.1Moderate · SederhanaPeak 66Kangar
Kota KinabaluSabah60.6Moderate · SederhanaPeak 73Kota Kinabalu
Shah AlamSelangor165.6Unhealthy · Tidak SihatPeak 183Shah Alam
Kuala TerengganuTerengganu75.7Moderate · SederhanaPeak 113Kuala 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 14 – 20 Oct 2026, the latest Wednesday-to-Tuesday reporting week in Malaysia Time. The national weekly average of 108.7 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 209 API at Pasir Gudang 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 11,424 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 14 – 20 Oct 2026, Malaysia averaged an Air Pollutant Index of 108.7, which sits in the Unhealthy band (Tidak Sihat). 59% of all hourly readings stayed within Good or Moderate.

Where was the cleanest air recorded?

Limbang in Sarawak held the lowest weekly average at API 54.1 (Moderate).

Which area had the worst haze?

The single highest reading of the week was API 209 (Very Unhealthy) at Pasir Gudang, Johor, recorded at 10:00 MYT, 16 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.