30 Sep – 6 Oct 2026 · Malaysia

Kuala Lumpur weekly air quality

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

134.8Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 116.1. 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

332 eligible observations · 0 excluded.

+36.9 AQI compared with the previous week’s eligible mean of 97.9.

Peak AQI: 181 at Cheras · 30 Sept 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 96High 181AQI

30 Sept6 Oct

6 OctDaily mean · Peak 177151Avg AQI

Based on 44 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	169.2Unhealthy	181	48 / 0
2026-10-01	135.3Unhealthy for Sensitive Groups	156	48 / 0
2026-10-02	114.8Unhealthy for Sensitive Groups	130	48 / 0
2026-10-03	106.5Unhealthy for Sensitive Groups	124	48 / 0
2026-10-04	126Unhealthy for Sensitive Groups	147	48 / 0
2026-10-05	142.2Unhealthy for Sensitive Groups	156	48 / 0
2026-10-06	151Unhealthy	177	44 / 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	174	174	175	175	175.5	175.5	176	176	176	175	175	173.5	171	168.5	166.5	165.5	164.5	164.5	163	162	160	159	158.5	158
2026-10-01	156	155.5	154.5	153.5	152.5	150.5	147.5	145.5	144	142	137.5	138.5	136.5	134.5	133.5	129.5	125.5	123.5	121.5	118.5	115.5	111.5	110	109.5
2026-10-02	109.5	108.5	109.5	109.5	110.5	110.5	110.5	110.5	112.5	112.5	114.5	114.5	117.5	116.5	116.5	121.5	122.5	120.5	119.5	119.5	118.5	116.5	117.5	115.5
2026-10-03	113.5	111.5	109.5	108.5	108	107	108	107	106	106	106	105	103.5	103	106	101	101	103	105	106	108	108	108	108
2026-10-04	109	111	113	114	115.5	116.5	117.5	118.5	120.5	120.5	122.5	122.5	126	129	131	132	136	135	136	137	136.5	140.5	141.5	143.5
2026-10-05	144	144.5	146	146.5	146	145	145	144	143	143	143	144	144	142	143	143.5	141.5	141.5	140	139	138.5	136	136	134.5
2026-10-06	135	135	133.5	134.5	136	138	140	142.5	145.5	147.5	151.5	152	153.5	155	156.5	158	161	163.5	167	169	172	175	—	—

Observation categories

Good: 0

Moderate: 15

Unhealthy for Sensitive Groups: 208

Unhealthy: 109

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

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
Cheras	140.1Unhealthy for Sensitive Groups	181	124	166 / 0
Batu Muda	129.5Unhealthy for Sensitive Groups	173	108.3	166 / 0

Kuala Lumpur air quality.
Weekly state review.

30 Sep – 6 Oct 20267 days · 2 monitoring stations

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi negeri Kuala Lumpur

Across Kuala Lumpur, air quality for the week of 30 Sep – 6 Oct 2026 averaged an Air Pollutant Index (API) of 116.2 (Unhealthy).

State weekly average

116.2API

Unhealthy · Tidak Sihat

Daily averages83.8 – 164.5 APIWed → Tue

Explore the week

State's peak reading: 173CherasPeak reading across state
Cleanest area in state: 108.3Batu MudaLowest weekly average
Good to Moderate air: 56%of all readings332 readings
National standing: #15of 16 states/territoriesNational avg: 83.7 API

Seven days of air quality in Kuala Lumpur

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 · 0–200 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	164.5	156	173
Thu, 1 Oct	116	81	155
Fri, 2 Oct	88.1	80	96
Sat, 3 Oct	83.8	78	93
Sun, 4 Oct	95.8	84	136
Mon, 5 Oct	125.4	89	155
Tue, 6 Oct	141.5	90	170

Monitoring stations in Kuala Lumpur

Kedudukan stesen pemantauan di seluruh negeri mengikut purata mingguan

Scale 0 – 175

Batu Muda108.3avg
WP Kuala Lumpur
78Unhealthy167
Cheras124avg
WP Kuala Lumpur
81Unhealthy173

The week, hour by hour

Purata negeri bagi setiap jam sepanjang tujuh hari

Read each row from midnight to 11pm, in Malaysia Time. Hourly state averages show when air quality shifted during each day of the week.

050100150200APIBrighter cells ran hazier than the rest of this week (81 – 169.5 API)

Haziest hour of the week: Wed at 06:00 MYT, averaging API 169.5 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	168	168	168.5	168.5	169	169	169.5	169.5	169.5	169	169	167.5	165.5	164	162.5	161.5	161	161	160	159	158	157	156.5	156
Thu	155	154.5	153.5	153	152	145	137	130.5	124.5	120	109.5	112.5	108	104.5	108	102.5	93.5	92.5	91.5	90	88.5	86.5	85.5	85.5
Fri	85.5	85	85.5	85.5	86	86	86	86	87	87	88	88	89.5	89	89	91.5	92	91	90.5	90.5	90	89	89.5	88.5
Sat	87.5	86.5	85.5	85	84.5	84	84.5	84	83.5	83.5	83.5	83	82	82	83.5	81	81	82	83	83.5	84.5	84.5	84.5	84.5
Sun	85	86	87	87.5	88.5	89	89.5	90	91	91	92	92	94	96.5	96.5	97	99	98.5	99	99.5	101	110.5	116.5	122.5
Mon	125	128	132	133	130	127	126	125.5	125	125	125	125.5	125.5	124.5	125	125.5	124.5	124.5	124	123.5	123	121.5	121.5	120.5
Tue	121	121	118.5	115	114.5	114.5	115	120	130	140.5	151.5	152	153	154	155	156.5	158.5	160.5	162.5	164.5	166.5	168.5	—	—

How readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana56%186
UnhealthyTidak Sihat44%146
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 332 hourly station readings.

Health guidelines

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