21 – 27 Oct 2026 · Malaysia

Segamat weekly air quality

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

120Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 101.9. 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

145 eligible observations · 0 excluded.

-26.6 AQI compared with the previous week’s eligible mean of 146.6.

Peak AQI: 156 at Segamat · 24 Oct 2026, 07:00 (UTC+8).

Daily US AQI (PM2.5)

Low 59High 156AQI

21 Oct27 Oct

27 OctDaily mean · Peak 6868Avg AQI

Based on 1 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	141.9Unhealthy for Sensitive Groups	151	24 / 0
2026-10-22	121.9Unhealthy for Sensitive Groups	132	24 / 0
2026-10-23	122.7Unhealthy for Sensitive Groups	144	24 / 0
2026-10-24	154.6Unhealthy	156	24 / 0
2026-10-25	118.2Unhealthy for Sensitive Groups	155	24 / 0
2026-10-26	63Moderate	68	24 / 0
2026-10-27	68Moderate	68	1 / 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	136	136	138	138	140	140	141	142	143	146	148	150	151	150	150	146	142	141	142	141	139	136	136	134
2026-10-22	132	132	132	132	132	130	130	130	128	126	124	120	118	117	115	113	113	113	113	115	115	115	115	115
2026-10-23	115	115	115	113	113	113	111	111	113	113	115	117	120	122	126	128	130	130	132	134	136	138	141	144
2026-10-24	147	150	152	152	154	155	155	156	156	156	156	155	155	155	155	155	156	156	156	156	156	156	156	155
2026-10-25	155	155	154	152	151	146	142	136	132	132	128	126	122	117	111	107	101	96	91	86	80	75	72	70
2026-10-26	67	62	59	59	59	59	59	59	59	61	61	62	64	64	64	64	62	64	65	67	68	68	68	67
2026-10-27	68	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 32

Unhealthy for Sensitive Groups: 85

Unhealthy: 28

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

Segamat air quality.
Weekly station review.

21 – 27 Oct 20267 days · Johor

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

During the week of 21 – 27 Oct 2026, air quality at Segamat averaged an Air Pollutant Index (API) of 101.9 (Unhealthy). Readings peaked at 155.

Station weekly average

101.9API

Unhealthy · Tidak Sihat

Daily averages55.5 – 153.3 APIWed → Tue

Explore the week

Week's peak reading: 155UnhealthyPeak during 7-day window
Rank in Johor: #3of 8 stationsState avg: 112 API
Good to Moderate air: 65%of hourly readings145 readings recorded
National standing: #44of 68 stationsNational avg: 84.4 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, 21 Oct	118.5	98	151
Thu, 22 Oct	91.7	87	97
Fri, 23 Oct	93.6	86	127
Sat, 24 Oct	153.3	137	155
Sun, 25 Oct	100.3	60	154
Mon, 26 Oct	55.5	53	59
Tue, 27 Oct	59	59	59

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

0255075100125150175APIBrighter cells ran hazier than the rest of this week (53 – 155 API)

Haziest hour of the week: Sat at 07:00 MYT, averaging API 155 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	99	99	100	103	108	111	113	117	123	133	141	149	151	150	149	134	116	115	118	114	106	99	99	98
Thu	97	97	97	97	97	96	96	96	95	94	93	91	90	89	88	87	87	87	87	88	88	88	88	88
Fri	88	88	88	87	87	87	86	86	87	87	88	89	91	92	94	95	96	96	97	98	99	100	114	127
Sat	137	149	152	152	153	154	154	155	155	155	155	154	154	154	154	154	155	155	155	155	155	155	155	154
Sun	154	154	153	152	151	135	116	99	97	97	95	94	92	89	86	84	81	78	75	71	67	64	62	60
Mon	58	55	53	53	53	53	53	53	53	54	54	55	56	56	56	56	55	56	57	58	59	59	59	58
Tue	59	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana65%94
UnhealthyTidak Sihat35%51
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 145 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 Segamat

Perbandingan purata mingguan dengan stesen berhampiran

Tangkak124.7 API
Unhealthy39 away
Batu Pahat126.2 API
Unhealthy64 away
Kluang116.3 API
Unhealthy71 away
Alor Gajah109.8 API
Unhealthy72 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	99	99	100	103	108	111	113	117	123	133	141	149	151	150	149	134	116	115	118	114	106	99	99	98
Thu	97	97	97	97	97	96	96	96	95	94	93	91	90	89	88	87	87	87	87	88	88	88	88	88
Fri	88	88	88	87	87	87	86	86	87	87	88	89	91	92	94	95	96	96	97	98	99	100	114	127
Sat	137	149	152	152	153	154	154	155	155	155	155	154	154	154	154	154	155	155	155	155	155	155	155	154
Sun	154	154	153	152	151	135	116	99	97	97	95	94	92	89	86	84	81	78	75	71	67	64	62	60
Mon	58	55	53	53	53	53	53	53	53	54	54	55	56	56	56	56	55	56	57	58	59	59	59	58
Tue	59	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	99	99	100	103	108	111	113	117	123	133	141	149	151	150	149	134	116	115	118	114	106	99	99	98
Thu	97	97	97	97	97	96	96	96	95	94	93	91	90	89	88	87	87	87	87	88	88	88	88	88
Fri	88	88	88	87	87	87	86	86	87	87	88	89	91	92	94	95	96	96	97	98	99	100	114	127
Sat	137	149	152	152	153	154	154	155	155	155	155	154	154	154	154	154	155	155	155	155	155	155	155	154
Sun	154	154	153	152	151	135	116	99	97	97	95	94	92	89	86	84	81	78	75	71	67	64	62	60
Mon	58	55	53	53	53	53	53	53	53	54	54	55	56	56	56	56	55	56	57	58	59	59	59	58
Tue	59	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—