30 Sep – 6 Oct 2026 · Malaysia

Pasir Gudang weekly air quality

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

141.5Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 129. 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

163 eligible observations · 0 excluded.

+16.5 AQI compared with the previous week’s eligible mean of 125.

Peak AQI: 179 at Pasir Gudang · 30 Sept 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 91High 179AQI

30 Sept6 Oct

6 OctDaily mean · Peak 178172Avg AQI

Based on 19 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	170.1Unhealthy	179	24 / 0
2026-10-01	109Unhealthy for Sensitive Groups	152	24 / 0
2026-10-02	99.4Moderate	122	24 / 0
2026-10-03	148.4Unhealthy for Sensitive Groups	158	24 / 0
2026-10-04	141.4Unhealthy for Sensitive Groups	155	24 / 0
2026-10-05	156.5Unhealthy	169	24 / 0
2026-10-06	172Unhealthy	178	19 / 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	179	178	178	177	177	177	175	175	175	174	174	173	171	171	170	170	169	166	165	162	160	158	155	154
2026-10-01	152	147	142	136	130	124	118	115	109	101	101	96	97	96	94	93	93	93	96	96	97	97	96	96
2026-10-02	96	94	94	94	94	94	94	94	94	94	91	93	93	93	93	96	97	103	105	109	113	115	120	122
2026-10-03	126	128	130	132	136	139	143	146	149	151	154	155	155	156	156	158	158	156	156	156	156	155	155	155
2026-10-04	155	155	154	154	154	152	151	150	146	144	139	134	130	128	130	128	130	134	136	136	136	138	139	141
2026-10-05	143	145	147	151	152	152	154	154	154	155	155	155	156	158	158	159	159	160	160	162	165	167	167	169
2026-10-06	170	170	170	169	169	169	169	169	170	170	170	171	173	174	175	177	177	178	178	—	—	—	—	—

Observation categories

Good: 0

Moderate: 30

Unhealthy for Sensitive Groups: 46

Unhealthy: 87

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

Pasir Gudang air quality.
Weekly station review.

30 Sep – 6 Oct 20267 days · Johor

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

During the week of 30 Sep – 6 Oct 2026, air quality at Pasir Gudang averaged an Air Pollutant Index (API) of 129 (Unhealthy). Readings peaked at 172.

Station weekly average

129API

Unhealthy · Tidak Sihat

Daily averages79.8 – 166.4 APIWed → Tue

Explore the week

Week's peak reading: 172UnhealthyPeak during 7-day window
Rank in Johor: #8of 8 stationsState avg: 111.8 API
Good to Moderate air: 37%of hourly readings163 readings recorded
National standing: #68of 68 stationsNational avg: 83.2 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 · 0–200 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	165.1	153	172
Thu, 1 Oct	88.7	76	152
Fri, 2 Oct	79.8	75	92
Sat, 3 Oct	137.8	94	156
Sun, 4 Oct	119.8	95	154
Mon, 5 Oct	152.9	120	164
Tue, 6 Oct	166.4	164	171

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 Pasir Gudang shows local patterns like traffic peaks and afternoon haze accumulation.

050100150200APIBrighter cells ran hazier than the rest of this week (75 – 172 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 172 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	172	171	171	170	170	170	169	169	169	168	168	167	166	166	165	165	164	162	161	159	158	156	154	153
Thu	152	138	116	99	96	93	90	88	85	81	81	78	79	78	77	76	76	76	78	78	79	79	78	78
Fri	78	77	77	77	77	77	77	77	77	77	75	76	76	76	76	78	79	82	83	85	87	88	91	92
Sat	94	95	96	97	99	106	122	135	147	151	153	154	154	155	155	156	156	155	155	155	155	154	154	154
Sun	154	154	153	153	153	152	151	149	135	126	106	98	96	95	96	95	96	98	99	99	99	100	106	113
Mon	120	128	138	151	152	152	153	153	153	154	154	154	155	156	156	157	157	158	158	159	161	163	163	164
Tue	165	165	165	164	164	164	164	164	165	165	165	166	167	168	169	170	170	171	171	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana37%61
UnhealthyTidak Sihat63%102
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 163 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 Pasir Gudang

Perbandingan purata mingguan dengan stesen berhampiran

Larkin128.3 API
Unhealthy18 away
Pengerang99 API
Moderate30 away
Kota Tinggi101.2 API
Unhealthy38 away
Kluang104.8 API
Unhealthy90 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	172	171	171	170	170	170	169	169	169	168	168	167	166	166	165	165	164	162	161	159	158	156	154	153
Thu	152	138	116	99	96	93	90	88	85	81	81	78	79	78	77	76	76	76	78	78	79	79	78	78
Fri	78	77	77	77	77	77	77	77	77	77	75	76	76	76	76	78	79	82	83	85	87	88	91	92
Sat	94	95	96	97	99	106	122	135	147	151	153	154	154	155	155	156	156	155	155	155	155	154	154	154
Sun	154	154	153	153	153	152	151	149	135	126	106	98	96	95	96	95	96	98	99	99	99	100	106	113
Mon	120	128	138	151	152	152	153	153	153	154	154	154	155	156	156	157	157	158	158	159	161	163	163	164
Tue	165	165	165	164	164	164	164	164	165	165	165	166	167	168	169	170	170	171	171	—	—	—	—	—

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	172	171	171	170	170	170	169	169	169	168	168	167	166	166	165	165	164	162	161	159	158	156	154	153
Thu	152	138	116	99	96	93	90	88	85	81	81	78	79	78	77	76	76	76	78	78	79	79	78	78
Fri	78	77	77	77	77	77	77	77	77	77	75	76	76	76	76	78	79	82	83	85	87	88	91	92
Sat	94	95	96	97	99	106	122	135	147	151	153	154	154	155	155	156	156	155	155	155	155	154	154	154
Sun	154	154	153	153	153	152	151	149	135	126	106	98	96	95	96	95	96	98	99	99	99	100	106	113
Mon	120	128	138	151	152	152	153	153	153	154	154	154	155	156	156	157	157	158	158	159	161	163	163	164
Tue	165	165	165	164	164	164	164	164	165	165	165	166	167	168	169	170	170	171	171	—	—	—	—	—