30 Sep – 6 Oct 2026 · Malaysia

Batu Muda weekly air quality

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

129.8Weekly 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

167 eligible observations · 0 excluded.

+39.2 AQI compared with the previous week’s eligible mean of 90.6.

Peak AQI: 175 at Batu Muda · 6 Oct 2026, 22:00 (UTC+8).

Daily US AQI (PM2.5)

Low 96High 175AQI

30 Sept6 Oct

6 OctDaily mean · Peak 175147Avg AQI

Based on 23 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	166.3Unhealthy	171	24 / 0
2026-10-01	129.8Unhealthy for Sensitive Groups	156	24 / 0
2026-10-02	104.3Unhealthy for Sensitive Groups	115	24 / 0
2026-10-03	102.3Unhealthy for Sensitive Groups	109	24 / 0
2026-10-04	127.9Unhealthy for Sensitive Groups	140	24 / 0
2026-10-05	131.5Unhealthy for Sensitive Groups	141	24 / 0
2026-10-06	147Unhealthy for Sensitive Groups	175	23 / 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	167	167	169	169	170	170	171	171	171	171	171	170	169	167	166	166	163	163	163	162	160	159	159	158
2026-10-01	156	155	154	152	151	147	143	140	138	136	132	132	130	128	124	117	117	117	115	113	109	105	103	101
2026-10-02	101	99	99	99	99	99	99	99	101	101	103	103	107	105	107	113	115	111	109	109	107	105	107	105
2026-10-03	103	101	99	99	99	99	101	101	101	101	99	99	96	97	105	101	101	105	105	107	109	109	109	109
2026-10-04	111	113	115	117	118	120	120	122	124	124	128	128	134	138	136	132	136	134	134	136	134	138	138	140
2026-10-05	140	141	141	141	140	138	138	136	134	134	134	134	134	130	132	132	128	128	124	122	122	118	118	117
2026-10-06	118	118	118	122	126	130	134	138	143	146	151	152	152	154	154	156	159	160	165	167	170	173	175	—

Observation categories

Good: 0

Moderate: 15

Unhealthy for Sensitive Groups: 110

Unhealthy: 42

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

Batu Muda air quality.
Weekly station review.

30 Sep – 6 Oct 20267 days · Kuala Lumpur

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Batu Muda, Kuala Lumpur

During the week of 30 Sep – 6 Oct 2026, air quality at Batu Muda averaged an Air Pollutant Index (API) of 108.7 (Unhealthy). Readings peaked at 169.

Station weekly average

108.7API

Unhealthy · Tidak Sihat

Daily averages81.6 – 162.4 APIWed → Tue

Explore the week

Week's peak reading: 169UnhealthyPeak during 7-day window
Rank in Kuala Lumpur: #1of 2 stationsState avg: 116.5 API
Good to Moderate air: 66%of hourly readings167 readings recorded
National standing: #58of 68 stationsNational avg: 83.9 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 · 0–200 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	162.4	156	166
Thu, 1 Oct	107.7	81	155
Fri, 2 Oct	82.6	80	88
Sat, 3 Oct	81.6	78	85
Sun, 4 Oct	95.4	86	109
Mon, 5 Oct	99	89	114
Tue, 6 Oct	133.2	90	169

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 Batu Muda shows local patterns like traffic peaks and afternoon haze accumulation.

050100150200APIBrighter cells ran hazier than the rest of this week (78 – 169 API)

Haziest hour of the week: Tue at 22:00 MYT, averaging API 169 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	163	163	164	164	165	165	166	166	166	166	166	165	164	163	162	162	160	160	160	159	158	157	157	156
Thu	155	154	153	152	151	137	122	110	100	99	97	97	96	95	93	89	89	89	88	87	85	83	82	81
Fri	81	80	80	80	80	80	80	80	81	81	82	82	84	83	84	87	88	86	85	85	84	83	84	83
Sat	82	81	80	80	80	80	81	81	81	81	80	80	78	79	83	81	81	83	83	84	85	85	85	85
Sun	86	87	88	89	90	91	91	92	93	93	95	95	98	102	99	97	99	98	98	99	98	100	103	109
Mon	110	113	113	114	108	102	100	99	98	98	98	98	98	96	97	97	95	95	93	92	92	90	90	89
Tue	90	90	90	92	94	96	98	103	120	134	151	152	152	153	153	155	157	158	161	163	165	167	169	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana66%110
UnhealthyTidak Sihat34%57
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 167 hourly station readings.

What it meant for this area

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

Nearby monitoring stations around Batu Muda

Perbandingan purata mingguan dengan stesen berhampiran

Petaling Jaya99.4 API
Moderate12 away
Cheras124.2 API
Unhealthy12 away
Shah Alam110.2 API
Unhealthy18 away
Putrajaya120.6 API
Unhealthy33 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	163	163	164	164	165	165	166	166	166	166	166	165	164	163	162	162	160	160	160	159	158	157	157	156
Thu	155	154	153	152	151	137	122	110	100	99	97	97	96	95	93	89	89	89	88	87	85	83	82	81
Fri	81	80	80	80	80	80	80	80	81	81	82	82	84	83	84	87	88	86	85	85	84	83	84	83
Sat	82	81	80	80	80	80	81	81	81	81	80	80	78	79	83	81	81	83	83	84	85	85	85	85
Sun	86	87	88	89	90	91	91	92	93	93	95	95	98	102	99	97	99	98	98	99	98	100	103	109
Mon	110	113	113	114	108	102	100	99	98	98	98	98	98	96	97	97	95	95	93	92	92	90	90	89
Tue	90	90	90	92	94	96	98	103	120	134	151	152	152	153	153	155	157	158	161	163	165	167	169	—

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	163	163	164	164	165	165	166	166	166	166	166	165	164	163	162	162	160	160	160	159	158	157	157	156
Thu	155	154	153	152	151	137	122	110	100	99	97	97	96	95	93	89	89	89	88	87	85	83	82	81
Fri	81	80	80	80	80	80	80	80	81	81	82	82	84	83	84	87	88	86	85	85	84	83	84	83
Sat	82	81	80	80	80	80	81	81	81	81	80	80	78	79	83	81	81	83	83	84	85	85	85	85
Sun	86	87	88	89	90	91	91	92	93	93	95	95	98	102	99	97	99	98	98	99	98	100	103	109
Mon	110	113	113	114	108	102	100	99	98	98	98	98	98	96	97	97	95	95	93	92	92	90	90	89
Tue	90	90	90	92	94	96	98	103	120	134	151	152	152	153	153	155	157	158	161	163	165	167	169	—