30 Sep – 6 Oct 2026 · Malaysia

Kota Tinggi weekly air quality

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

115.5Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 99.3. 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

158 eligible observations · 0 excluded.

+4.7 AQI compared with the previous week’s eligible mean of 110.8.

Peak AQI: 166 at Kota Tinggi · 30 Sept 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 83High 166AQI

30 Sept6 Oct

6 OctDaily mean · Peak 162156.9Avg AQI

Based on 14 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	157.2Unhealthy	166	24 / 0
2026-10-01	95Moderate	124	24 / 0
2026-10-02	85.1Moderate	88	24 / 0
2026-10-03	97.4Moderate	113	24 / 0
2026-10-04	111.3Unhealthy for Sensitive Groups	120	24 / 0
2026-10-05	123.2Unhealthy for Sensitive Groups	154	24 / 0
2026-10-06	156.9Unhealthy	162	14 / 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	166	166	165	165	165	163	163	163	163	163	162	162	160	159	159	158	156	155	154	151	147	141	136	130
2026-10-01	124	120	115	111	109	105	103	101	97	96	93	91	90	88	87	84	83	83	83	84	83	83	83	84
2026-10-02	84	84	86	86	86	86	86	87	86	84	86	84	83	84	83	83	83	84	84	84	87	87	87	88
2026-10-03	88	88	88	88	88	87	87	87	86	88	90	93	96	97	101	103	105	109	109	111	111	111	113	113
2026-10-04	115	115	117	117	118	118	120	120	120	118	117	115	111	109	109	107	105	103	101	101	103	103	103	105
2026-10-05	105	105	105	107	107	109	109	111	111	113	113	115	118	120	122	126	130	136	139	144	151	152	154	154
2026-10-06	155	155	156	156	156	156	156	156	156	156	158	159	160	162	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 54

Unhealthy for Sensitive Groups: 66

Unhealthy: 38

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.

30 Sep – 6 Oct 20267 days · Johor

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

During the week of 30 Sep – 6 Oct 2026, air quality at Kota Tinggi averaged an Air Pollutant Index (API) of 99.3 (Moderate). Readings peaked at 162.

Station weekly average

99.3API

Moderate · Sederhana

Daily averages70.6 – 155.6 APIWed → Tue

Explore the week

Week's peak reading: 162UnhealthyPeak during 7-day window
Rank in Johor: #2of 8 stationsState avg: 109.9 API
Good to Moderate air: 73%of hourly readings158 readings recorded
National standing: #54of 68 stationsNational avg: 82.4 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	150.5	96	162
Thu, 1 Oct	76.7	69	93
Fri, 2 Oct	70.6	69	73
Sat, 3 Oct	78.3	71	87
Sun, 4 Oct	86.3	81	91
Mon, 5 Oct	101	83	153
Tue, 6 Oct	155.6	154	159

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 (69 – 162 API)

Haziest hour of the week: Wed at 00:00 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	162	162	161	161	161	160	160	160	160	160	159	159	158	157	157	156	155	154	153	151	137	113	99	96
Thu	93	91	88	86	85	83	82	81	79	78	76	75	74	73	72	70	69	69	69	70	69	69	69	70
Fri	70	70	71	71	71	71	71	72	71	70	71	70	69	70	69	69	69	70	70	70	72	72	72	73
Sat	73	73	73	73	73	72	72	72	71	73	74	76	78	79	81	82	83	85	85	86	86	86	87	87
Sun	88	88	89	89	90	90	91	91	91	90	89	88	86	85	85	84	83	82	81	81	82	82	82	83
Mon	83	83	83	84	84	85	85	86	86	87	87	88	90	91	92	94	96	99	106	125	151	152	153	153
Tue	154	154	155	155	155	155	155	155	155	155	156	157	158	159	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana73%116
UnhealthyTidak Sihat27%42
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 158 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

Pengerang97.1 API
Moderate21 away
Pasir Gudang127.7 API
Unhealthy38 away
Larkin127.1 API
Unhealthy55 away
Kluang102.8 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	162	162	161	161	161	160	160	160	160	160	159	159	158	157	157	156	155	154	153	151	137	113	99	96
Thu	93	91	88	86	85	83	82	81	79	78	76	75	74	73	72	70	69	69	69	70	69	69	69	70
Fri	70	70	71	71	71	71	71	72	71	70	71	70	69	70	69	69	69	70	70	70	72	72	72	73
Sat	73	73	73	73	73	72	72	72	71	73	74	76	78	79	81	82	83	85	85	86	86	86	87	87
Sun	88	88	89	89	90	90	91	91	91	90	89	88	86	85	85	84	83	82	81	81	82	82	82	83
Mon	83	83	83	84	84	85	85	86	86	87	87	88	90	91	92	94	96	99	106	125	151	152	153	153
Tue	154	154	155	155	155	155	155	155	155	155	156	157	158	159	—	—	—	—	—	—	—	—	—	—

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	162	162	161	161	161	160	160	160	160	160	159	159	158	157	157	156	155	154	153	151	137	113	99	96
Thu	93	91	88	86	85	83	82	81	79	78	76	75	74	73	72	70	69	69	69	70	69	69	69	70
Fri	70	70	71	71	71	71	71	72	71	70	71	70	69	70	69	69	69	70	70	70	72	72	72	73
Sat	73	73	73	73	73	72	72	72	71	73	74	76	78	79	81	82	83	85	85	86	86	86	87	87
Sun	88	88	89	89	90	90	91	91	91	90	89	88	86	85	85	84	83	82	81	81	82	82	82	83
Mon	83	83	83	84	84	85	85	86	86	87	87	88	90	91	92	94	96	99	106	125	151	152	153	153
Tue	154	154	155	155	155	155	155	155	155	155	156	157	158	159	—	—	—	—	—	—	—	—	—	—