21 – 27 Oct 2026 · Malaysia

Pasir Gudang weekly air quality

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

136Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 122.3. 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.

-57.2 AQI compared with the previous week’s eligible mean of 193.2.

Peak AQI: 169 at Pasir Gudang · 24 Oct 2026, 10:00 (UTC+8).

Daily US AQI (PM2.5)

Low 80High 169AQI

21 Oct27 Oct

27 OctDaily mean · Peak 8180.5Avg 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	151.6Unhealthy	158	24 / 0
2026-10-22	134.8Unhealthy for Sensitive Groups	141	24 / 0
2026-10-23	122.4Unhealthy for Sensitive Groups	156	24 / 0
2026-10-24	163.2Unhealthy	169	24 / 0
2026-10-25	155.2Unhealthy	162	24 / 0
2026-10-26	93.1Moderate	130	24 / 0
2026-10-27	80.5Moderate	81	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	158	156	156	155	154	152	152	152	152	152	151	151	151	150	149	151	152	152	152	152	151	149	146	143
2026-10-22	141	139	138	138	139	140	141	140	140	140	140	140	140	139	138	136	130	130	128	126	124	122	124	122
2026-10-23	122	122	122	118	117	113	111	107	103	101	101	101	103	107	111	117	126	134	139	146	152	154	155	156
2026-10-24	158	158	159	160	162	162	163	165	166	166	169	169	169	169	167	166	165	163	162	162	160	159	159	159
2026-10-25	159	160	160	160	162	162	162	162	160	159	158	156	156	156	155	155	154	154	152	151	149	145	141	136
2026-10-26	130	122	117	111	105	97	94	91	90	88	88	88	87	87	86	86	86	86	86	84	83	81	81	81
2026-10-27	81	80	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 21

Unhealthy for Sensitive Groups: 58

Unhealthy: 67

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.

21 – 27 Oct 20267 days · Johor

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

During the week of 21 – 27 Oct 2026, air quality at Pasir Gudang averaged an Air Pollutant Index (API) of 122.3 (Unhealthy). Readings peaked at 164.

Station weekly average

122.3API

Unhealthy · Tidak Sihat

Daily averages67.5 – 160 APIWed → Tue

Explore the week

Week's peak reading: 164UnhealthyPeak during 7-day window
Rank in Johor: #6of 8 stationsState avg: 111.7 API
Good to Moderate air: 38%of hourly readings146 readings recorded
National standing: #61of 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	149.6	121	156
Thu, 22 Oct	102.3	92	112
Fri, 23 Oct	100.9	81	155
Sat, 24 Oct	160	156	164
Sun, 25 Oct	150.3	99	159
Mon, 26 Oct	75.5	68	96
Tue, 27 Oct	67.5	67	68

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.

0255075100125150175APIBrighter cells ran hazier than the rest of this week (67 – 164 API)

Haziest hour of the week: Sat at 10:00 MYT, averaging API 164 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	156	155	155	154	153	152	152	152	152	152	151	151	151	150	146	151	152	152	152	152	151	145	132	121
Thu	112	105	100	101	105	109	112	110	109	108	110	111	108	105	100	99	96	96	95	94	93	92	93	92
Fri	92	92	92	90	89	87	86	84	82	81	81	81	82	84	86	89	94	98	105	133	152	153	154	155
Sat	156	156	157	158	159	159	160	161	162	162	164	164	164	164	163	162	161	160	159	159	158	157	157	157
Sun	157	158	158	158	159	159	159	159	158	157	156	155	155	155	154	154	153	153	152	151	144	129	114	99
Mon	96	92	89	86	83	79	77	75	74	73	73	73	72	72	71	71	71	71	71	70	69	68	68	68
Tue	68	67	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana38%56
UnhealthyTidak Sihat62%90
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

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

Larkin115.3 API
Unhealthy18 away
Pengerang97.5 API
Moderate30 away
Kota Tinggi90.7 API
Moderate38 away
Kluang116 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	156	155	155	154	153	152	152	152	152	152	151	151	151	150	146	151	152	152	152	152	151	145	132	121
Thu	112	105	100	101	105	109	112	110	109	108	110	111	108	105	100	99	96	96	95	94	93	92	93	92
Fri	92	92	92	90	89	87	86	84	82	81	81	81	82	84	86	89	94	98	105	133	152	153	154	155
Sat	156	156	157	158	159	159	160	161	162	162	164	164	164	164	163	162	161	160	159	159	158	157	157	157
Sun	157	158	158	158	159	159	159	159	158	157	156	155	155	155	154	154	153	153	152	151	144	129	114	99
Mon	96	92	89	86	83	79	77	75	74	73	73	73	72	72	71	71	71	71	71	70	69	68	68	68
Tue	68	67	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	156	155	155	154	153	152	152	152	152	152	151	151	151	150	146	151	152	152	152	152	151	145	132	121
Thu	112	105	100	101	105	109	112	110	109	108	110	111	108	105	100	99	96	96	95	94	93	92	93	92
Fri	92	92	92	90	89	87	86	84	82	81	81	81	82	84	86	89	94	98	105	133	152	153	154	155
Sat	156	156	157	158	159	159	160	161	162	162	164	164	164	164	163	162	161	160	159	159	158	157	157	157
Sun	157	158	158	158	159	159	159	159	158	157	156	155	155	155	154	154	153	153	152	151	144	129	114	99
Mon	96	92	89	86	83	79	77	75	74	73	73	73	72	72	71	71	71	71	71	70	69	68	68	68
Tue	68	67	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—