30 Sep – 6 Oct 2026 · Malaysia

Pengerang weekly air quality

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

115.6Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 99.4. 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

164 eligible observations · 0 excluded.

+5.5 AQI compared with the previous week’s eligible mean of 110.1.

Peak AQI: 166 at Pengerang · 6 Oct 2026, 19:00 (UTC+8).

Daily US AQI (PM2.5)

Low 77High 166AQI

30 Sept6 Oct

6 OctDaily mean · Peak 166157.5Avg AQI

Based on 20 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	150.6Unhealthy	162	24 / 0
2026-10-01	88Moderate	115	24 / 0
2026-10-02	86.7Moderate	96	24 / 0
2026-10-03	107.2Unhealthy for Sensitive Groups	117	24 / 0
2026-10-04	112.5Unhealthy for Sensitive Groups	120	24 / 0
2026-10-05	113.5Unhealthy for Sensitive Groups	151	24 / 0
2026-10-06	157.5Unhealthy	166	20 / 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	162	160	160	159	159	158	158	156	156	155	154	154	154	154	154	152	152	151	149	145	138	132	124	118
2026-10-01	115	109	105	99	97	94	93	91	90	88	90	87	84	81	80	77	78	78	78	77	80	80	81	81
2026-10-02	83	84	84	84	84	84	84	84	84	83	81	81	81	81	84	87	90	91	93	94	94	94	96	96
2026-10-03	97	97	97	97	99	99	99	101	101	103	107	111	113	117	117	115	111	111	109	111	113	115	115	117
2026-10-04	117	118	118	118	118	120	120	120	120	120	118	113	111	109	109	109	109	109	109	107	105	103	101	99
2026-10-05	99	99	99	99	99	101	101	101	103	103	101	105	107	109	113	115	120	124	126	130	134	140	145	151
2026-10-06	151	152	152	154	154	154	155	155	155	155	156	158	159	160	162	162	162	163	165	166	—	—	—	—

Observation categories

Good: 0

Moderate: 58

Unhealthy for Sensitive Groups: 67

Unhealthy: 39

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.

30 Sep – 6 Oct 20267 days · Johor

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

During the week of 30 Sep – 6 Oct 2026, air quality at Pengerang averaged an Air Pollutant Index (API) of 99.4 (Moderate). Readings peaked at 162.

Station weekly average

99.4API

Moderate · Sederhana

Daily averages71.8 – 155.8 APIWed → Tue

Explore the week

Week's peak reading: 162UnhealthyPeak during 7-day window
Rank in Johor: #1of 8 stationsState avg: 112.1 API
Good to Moderate air: 73%of hourly readings164 readings recorded
National standing: #52of 68 stationsNational avg: 83.4 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, 30 Sep	143.3	90	159
Thu, 1 Oct	72.5	65	88
Fri, 2 Oct	71.8	68	78
Sat, 3 Oct	84.1	79	89
Sun, 4 Oct	87	80	91
Mon, 5 Oct	90.7	80	151
Tue, 6 Oct	155.8	151	162

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 (65 – 162 API)

Haziest hour of the week: Tue at 19:00 MYT, averaging API 162 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	159	158	158	157	157	156	156	155	155	154	153	153	153	153	153	152	152	151	144	129	102	97	93	90
Thu	88	85	83	80	79	77	76	75	74	73	74	72	70	68	67	65	66	66	66	65	67	67	68	68
Fri	69	70	70	70	70	70	70	70	70	69	68	68	68	68	70	72	74	75	76	77	77	77	78	78
Sat	79	79	79	79	80	80	80	81	81	82	84	86	87	89	89	88	86	86	85	86	87	88	88	89
Sun	89	90	90	90	90	91	91	91	91	91	90	87	86	85	85	85	85	85	85	84	83	82	81	80
Mon	80	80	80	80	80	81	81	81	82	82	81	83	84	85	87	88	91	93	94	96	98	109	130	151
Tue	151	152	152	153	153	153	154	154	154	154	155	156	157	158	159	159	159	160	161	162	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana73%120
UnhealthyTidak Sihat27%44
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 164 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 Tinggi101.6 API
Unhealthy21 away
Pasir Gudang129.2 API
Unhealthy30 away
Larkin128.5 API
Unhealthy47 away
Kluang105.1 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	159	158	158	157	157	156	156	155	155	154	153	153	153	153	153	152	152	151	144	129	102	97	93	90
Thu	88	85	83	80	79	77	76	75	74	73	74	72	70	68	67	65	66	66	66	65	67	67	68	68
Fri	69	70	70	70	70	70	70	70	70	69	68	68	68	68	70	72	74	75	76	77	77	77	78	78
Sat	79	79	79	79	80	80	80	81	81	82	84	86	87	89	89	88	86	86	85	86	87	88	88	89
Sun	89	90	90	90	90	91	91	91	91	91	90	87	86	85	85	85	85	85	85	84	83	82	81	80
Mon	80	80	80	80	80	81	81	81	82	82	81	83	84	85	87	88	91	93	94	96	98	109	130	151
Tue	151	152	152	153	153	153	154	154	154	154	155	156	157	158	159	159	159	160	161	162	—	—	—	—

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	159	158	158	157	157	156	156	155	155	154	153	153	153	153	153	152	152	151	144	129	102	97	93	90
Thu	88	85	83	80	79	77	76	75	74	73	74	72	70	68	67	65	66	66	66	65	67	67	68	68
Fri	69	70	70	70	70	70	70	70	70	69	68	68	68	68	70	72	74	75	76	77	77	77	78	78
Sat	79	79	79	79	80	80	80	81	81	82	84	86	87	89	89	88	86	86	85	86	87	88	88	89
Sun	89	90	90	90	90	91	91	91	91	91	90	87	86	85	85	85	85	85	85	84	83	82	81	80
Mon	80	80	80	80	80	81	81	81	82	82	81	83	84	85	87	88	91	93	94	96	98	109	130	151
Tue	151	152	152	153	153	153	154	154	154	154	155	156	157	158	159	159	159	160	161	162	—	—	—	—