21 – 27 Oct 2026 · Malaysia

Pengerang weekly air quality

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

117.1Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 97.5. 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

146 eligible observations · 0 excluded.

-53.1 AQI compared with the previous week’s eligible mean of 170.2.

Peak AQI: 160 at Pengerang · 24 Oct 2026, 11:00 (UTC+8).

Daily US AQI (PM2.5)

Low 72High 160AQI

21 Oct27 Oct

27 OctDaily mean · Peak 7272Avg AQI

Based on 2 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
2026-10-21	128.5Unhealthy for Sensitive Groups	151	24 / 0
2026-10-22	102.2Unhealthy for Sensitive Groups	113	24 / 0
2026-10-23	96.1Moderate	130	24 / 0
2026-10-24	154.1Unhealthy	160	24 / 0
2026-10-25	133.6Unhealthy for Sensitive Groups	148	24 / 0
2026-10-26	91.9Moderate	118	24 / 0
2026-10-27	72Moderate	72	2 / 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
2026-10-21	151	150	147	144	142	140	138	136	134	132	132	128	126	122	120	118	117	115	115	117	115	115	115	115
2026-10-22	113	113	113	109	109	107	105	103	101	101	101	109	107	105	101	99	99	99	97	94	93	93	91	90
2026-10-23	90	88	88	88	88	87	87	87	87	87	86	77	80	84	87	93	99	105	109	113	118	122	126	130
2026-10-24	138	143	149	152	154	155	156	156	158	159	159	160	159	159	158	156	155	155	155	154	154	152	152	151
2026-10-25	148	145	142	140	139	138	138	138	138	138	134	134	134	134	134	132	132	128	126	126	124	122	122	120
2026-10-26	118	117	113	109	105	103	99	96	94	91	91	90	88	87	86	84	84	84	83	80	78	77	75	74
2026-10-27	72	72	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 46

Unhealthy for Sensitive Groups: 78

Unhealthy: 22

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

Pengerang air quality.
Weekly station review.

21 – 27 Oct 20267 days · Johor

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Pengerang, Johor

During the week of 21 – 27 Oct 2026, air quality at Pengerang averaged an Air Pollutant Index (API) of 97.5 (Moderate). Readings peaked at 158.

Station weekly average

97.5API

Moderate · Sederhana

Daily averages62 – 150.5 APIWed → Tue

Explore the week

Week's peak reading: 158UnhealthyPeak during 7-day window
Rank in Johor: #2of 8 stationsState avg: 111.7 API
Good to Moderate air: 75%of hourly readings146 readings recorded
National standing: #43of 68 stationsNational avg: 84.2 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 · 0–175 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, 21 Oct	102.2	88	151
Thu, 22 Oct	81.4	74	87
Fri, 23 Oct	77.3	65	96
Sat, 24 Oct	150.5	100	158
Sun, 25 Oct	101.9	91	143
Mon, 26 Oct	74.8	63	90
Tue, 27 Oct	62	62	62

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 Pengerang shows local patterns like traffic peaks and afternoon haze accumulation.

0255075100125150175APIBrighter cells ran hazier than the rest of this week (62 – 158 API)

Haziest hour of the week: Sat at 11:00 MYT, averaging API 158 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	151	150	137	127	118	109	102	99	98	97	97	95	94	92	91	90	89	88	88	89	88	88	88	88
Thu	87	87	87	85	85	84	83	82	81	81	81	85	84	83	81	80	80	80	79	77	76	76	75	74
Fri	74	73	73	73	73	72	72	72	72	72	71	65	67	70	72	76	80	83	85	87	90	92	94	96
Sat	100	122	146	152	153	154	155	155	156	157	157	158	157	157	156	155	154	154	154	153	153	152	152	151
Sun	143	129	119	111	107	102	100	100	100	100	98	98	98	98	98	97	97	95	94	94	93	92	92	91
Mon	90	89	87	85	83	82	80	78	77	75	75	74	73	72	71	70	70	70	69	67	66	65	64	63
Tue	62	62	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana75%110
UnhealthyTidak Sihat25%36
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 146 hourly station readings.

What it meant for this area

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

Nearby monitoring stations around Pengerang

Perbandingan purata mingguan dengan stesen berhampiran

Kota Tinggi90.7 API
Moderate21 away
Pasir Gudang122.3 API
Unhealthy30 away
Larkin115.3 API
Unhealthy47 away
Kluang116 API
Unhealthy118 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	151	150	137	127	118	109	102	99	98	97	97	95	94	92	91	90	89	88	88	89	88	88	88	88
Thu	87	87	87	85	85	84	83	82	81	81	81	85	84	83	81	80	80	80	79	77	76	76	75	74
Fri	74	73	73	73	73	72	72	72	72	72	71	65	67	70	72	76	80	83	85	87	90	92	94	96
Sat	100	122	146	152	153	154	155	155	156	157	157	158	157	157	156	155	154	154	154	153	153	152	152	151
Sun	143	129	119	111	107	102	100	100	100	100	98	98	98	98	98	97	97	95	94	94	93	92	92	91
Mon	90	89	87	85	83	82	80	78	77	75	75	74	73	72	71	70	70	70	69	67	66	65	64	63
Tue	62	62	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	151	150	137	127	118	109	102	99	98	97	97	95	94	92	91	90	89	88	88	89	88	88	88	88
Thu	87	87	87	85	85	84	83	82	81	81	81	85	84	83	81	80	80	80	79	77	76	76	75	74
Fri	74	73	73	73	73	72	72	72	72	72	71	65	67	70	72	76	80	83	85	87	90	92	94	96
Sat	100	122	146	152	153	154	155	155	156	157	157	158	157	157	156	155	154	154	154	153	153	152	152	151
Sun	143	129	119	111	107	102	100	100	100	100	98	98	98	98	98	97	97	95	94	94	93	92	92	91
Mon	90	89	87	85	83	82	80	78	77	75	75	74	73	72	71	70	70	70	69	67	66	65	64	63
Tue	62	62	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—