21 – 27 Oct 2026 · Malaysia

Kota Tinggi weekly air quality

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

110.2Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 90.7. 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.

-59.6 AQI compared with the previous week’s eligible mean of 169.8.

Peak AQI: 152 at Kota Tinggi · 21 Oct 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 68High 152AQI

21 Oct27 Oct

27 OctDaily mean · Peak 7069Avg 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	130.1Unhealthy for Sensitive Groups	152	24 / 0
2026-10-22	92.1Moderate	107	24 / 0
2026-10-23	81.6Moderate	99	24 / 0
2026-10-24	137.1Unhealthy for Sensitive Groups	152	24 / 0
2026-10-25	134.1Unhealthy for Sensitive Groups	144	24 / 0
2026-10-26	89.5Moderate	120	24 / 0
2026-10-27	69Moderate	70	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	152	152	151	147	145	143	142	141	140	141	132	132	128	126	122	118	117	115	115	115	115	113	111	109
2026-10-22	107	105	103	103	101	99	97	97	94	94	96	93	91	88	87	87	86	86	84	83	83	83	83	81
2026-10-23	81	81	80	80	80	78	78	77	77	75	74	75	77	78	78	80	81	81	83	87	90	93	96	99
2026-10-24	105	109	113	117	120	124	128	130	134	138	141	144	146	148	150	151	151	151	152	151	150	148	146	144
2026-10-25	141	139	138	138	139	140	142	143	144	142	138	136	132	130	130	130	130	130	130	128	126	126	124	122
2026-10-26	120	118	115	109	105	99	96	91	90	88	87	88	87	87	86	83	81	80	77	75	74	72	71	70
2026-10-27	70	68	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 64

Unhealthy for Sensitive Groups: 74

Unhealthy: 8

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

Kota Tinggi air quality.
Weekly station review.

21 – 27 Oct 20267 days · Johor

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

During the week of 21 – 27 Oct 2026, air quality at Kota Tinggi averaged an Air Pollutant Index (API) of 90.7 (Moderate). Readings peaked at 152.

Station weekly average

90.7API

Moderate · Sederhana

Daily averages59.5 – 120.3 APIWed → Tue

Explore the week

Week's peak reading: 152UnhealthyPeak during 7-day window
Rank in Johor: #1of 8 stationsState avg: 111.7 API
Good to Moderate air: 76%of hourly readings146 readings recorded
National standing: #41of 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	107	85	152
Thu, 22 Oct	75.3	68	84
Fri, 23 Oct	68.3	63	80
Sat, 24 Oct	120.3	83	152
Sun, 25 Oct	102.7	92	125
Mon, 26 Oct	73.2	60	91
Tue, 27 Oct	59.5	59	60

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 Kota Tinggi shows local patterns like traffic peaks and afternoon haze accumulation.

0255075100125150175APIBrighter cells ran hazier than the rest of this week (59 – 152 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 152 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	152	152	151	139	131	123	117	114	111	113	97	97	95	94	92	90	89	88	88	88	88	87	86	85
Thu	84	83	82	82	81	80	79	79	77	77	78	76	75	73	72	72	71	71	70	69	69	69	69	68
Fri	68	68	67	67	67	66	66	65	65	64	63	64	65	66	66	67	68	68	69	72	74	76	78	80
Sat	83	85	87	89	91	93	95	96	98	100	115	127	132	141	149	151	151	151	152	151	148	140	134	127
Sun	115	106	101	103	106	111	116	123	125	116	102	99	97	96	96	96	96	96	96	95	94	94	93	92
Mon	91	90	88	85	83	80	78	75	74	73	72	73	72	72	71	69	68	67	65	64	63	62	61	60
Tue	60	59	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana76%111
UnhealthyTidak Sihat24%35
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 Kota Tinggi

Perbandingan purata mingguan dengan stesen berhampiran

Pengerang97.5 API
Moderate21 away
Pasir Gudang122.3 API
Unhealthy38 away
Larkin115.3 API
Unhealthy55 away
Kluang116 API
Unhealthy114 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	152	152	151	139	131	123	117	114	111	113	97	97	95	94	92	90	89	88	88	88	88	87	86	85
Thu	84	83	82	82	81	80	79	79	77	77	78	76	75	73	72	72	71	71	70	69	69	69	69	68
Fri	68	68	67	67	67	66	66	65	65	64	63	64	65	66	66	67	68	68	69	72	74	76	78	80
Sat	83	85	87	89	91	93	95	96	98	100	115	127	132	141	149	151	151	151	152	151	148	140	134	127
Sun	115	106	101	103	106	111	116	123	125	116	102	99	97	96	96	96	96	96	96	95	94	94	93	92
Mon	91	90	88	85	83	80	78	75	74	73	72	73	72	72	71	69	68	67	65	64	63	62	61	60
Tue	60	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	152	152	151	139	131	123	117	114	111	113	97	97	95	94	92	90	89	88	88	88	88	87	86	85
Thu	84	83	82	82	81	80	79	79	77	77	78	76	75	73	72	72	71	71	70	69	69	69	69	68
Fri	68	68	67	67	67	66	66	65	65	64	63	64	65	66	66	67	68	68	69	72	74	76	78	80
Sat	83	85	87	89	91	93	95	96	98	100	115	127	132	141	149	151	151	151	152	151	148	140	134	127
Sun	115	106	101	103	106	111	116	123	125	116	102	99	97	96	96	96	96	96	96	95	94	94	93	92
Mon	91	90	88	85	83	80	78	75	74	73	72	73	72	72	71	69	68	67	65	64	63	62	61	60
Tue	60	59	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—