30 Sep – 6 Oct 2026 · Malaysia

Besut weekly air quality

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

83.8Weekly mean AQI · Moderate

Official DOE API mean: 68.9. 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

161 eligible observations · 0 excluded.

+32.6 AQI compared with the previous week’s eligible mean of 51.2.

Peak AQI: 136 at Besut · 30 Sept 2026, 11:00 (UTC+8).

Daily US AQI (PM2.5)

Low 55High 136AQI

30 Sept6 Oct

6 OctDaily mean · Peak 9996.5Avg AQI

Based on 17 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	124.7Unhealthy for Sensitive Groups	136	24 / 0
2026-10-01	89.4Moderate	111	24 / 0
2026-10-02	72.3Moderate	75	24 / 0
2026-10-03	64Moderate	71	24 / 0
2026-10-04	62.5Moderate	72	24 / 0
2026-10-05	80.8Moderate	90	24 / 0
2026-10-06	96.5Moderate	99	17 / 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	115	117	118	120	122	124	126	128	130	132	134	136	136	136	136	132	128	124	122	120	118	115	111	113
2026-10-01	111	109	107	105	103	99	97	96	94	93	91	88	87	86	83	81	80	78	78	77	75	75	77	75
2026-10-02	74	74	74	74	74	74	74	75	75	74	74	74	72	71	71	71	70	70	70	70	70	70	70	71
2026-10-03	71	71	70	68	68	67	67	65	64	64	64	62	62	62	62	62	62	62	62	62	62	61	59	57
2026-10-04	55	55	55	55	56	56	58	58	59	59	61	61	62	62	64	65	67	68	70	71	70	71	71	72
2026-10-05	72	72	72	74	74	74	74	75	75	77	78	78	81	83	86	87	88	90	90	88	88	87	87	88
2026-10-06	90	91	94	94	96	97	97	96	97	97	97	99	99	99	99	99	99	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 132

Unhealthy for Sensitive Groups: 29

Unhealthy: 0

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

Besut air quality.
Weekly station review.

30 Sep – 6 Oct 20267 days · Terengganu

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Besut, Terengganu

During the week of 30 Sep – 6 Oct 2026, air quality at Besut averaged an Air Pollutant Index (API) of 68.9 (Moderate). Readings peaked at 99.

Station weekly average

68.9API

Moderate · Sederhana

Daily averages54.5 – 93.3 APIWed → Tue

Explore the week

Week's peak reading: 99ModeratePeak during 7-day window
Rank in Terengganu: #1of 4 stationsState avg: 80.6 API
Good to Moderate air: 100%of hourly readings161 readings recorded
National standing: #19of 68 stationsNational avg: 82.9 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 · 0–125 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	93.3	86	99
Thu, 1 Oct	73.3	64	86
Fri, 2 Oct	61.8	60	64
Sat, 3 Oct	56.2	51	61
Sun, 4 Oct	54.5	46	62
Mon, 5 Oct	67.8	62	74
Tue, 6 Oct	78.5	74	80

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

0255075100125APIBrighter cells ran hazier than the rest of this week (46 – 99 API)

Haziest hour of the week: Wed at 11:00 MYT, averaging API 99 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	88	89	90	91	92	93	94	95	96	97	98	99	99	99	99	97	95	93	92	91	90	88	86	87
Thu	86	85	84	83	82	80	79	78	77	76	75	73	72	71	69	68	67	66	66	65	64	64	65	64
Fri	63	63	63	63	63	63	63	64	64	63	63	63	62	61	61	61	60	60	60	60	60	60	60	61
Sat	61	61	60	59	59	58	58	57	56	56	56	55	55	55	55	55	55	55	55	55	55	54	53	51
Sun	46	46	46	47	49	50	52	52	53	53	54	54	55	55	56	57	58	59	60	61	60	61	61	62
Mon	62	62	62	63	63	63	63	64	64	65	66	66	68	69	71	72	73	74	74	73	73	72	72	73
Tue	74	75	77	77	78	79	79	78	79	79	79	80	80	80	80	80	80	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik4%6
ModerateSederhana96%155
UnhealthyTidak Sihat0%0
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 161 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 Besut

Perbandingan purata mingguan dengan stesen berhampiran

Tanah Merah65.6 API
Moderate43 away
Kota Bharu71.6 API
Moderate54 away
Kuala Terengganu86.8 API
Moderate83 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	88	89	90	91	92	93	94	95	96	97	98	99	99	99	99	97	95	93	92	91	90	88	86	87
Thu	86	85	84	83	82	80	79	78	77	76	75	73	72	71	69	68	67	66	66	65	64	64	65	64
Fri	63	63	63	63	63	63	63	64	64	63	63	63	62	61	61	61	60	60	60	60	60	60	60	61
Sat	61	61	60	59	59	58	58	57	56	56	56	55	55	55	55	55	55	55	55	55	55	54	53	51
Sun	46	46	46	47	49	50	52	52	53	53	54	54	55	55	56	57	58	59	60	61	60	61	61	62
Mon	62	62	62	63	63	63	63	64	64	65	66	66	68	69	71	72	73	74	74	73	73	72	72	73
Tue	74	75	77	77	78	79	79	78	79	79	79	80	80	80	80	80	80	—	—	—	—	—	—	—

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	88	89	90	91	92	93	94	95	96	97	98	99	99	99	99	97	95	93	92	91	90	88	86	87
Thu	86	85	84	83	82	80	79	78	77	76	75	73	72	71	69	68	67	66	66	65	64	64	65	64
Fri	63	63	63	63	63	63	63	64	64	63	63	63	62	61	61	61	60	60	60	60	60	60	60	61
Sat	61	61	60	59	59	58	58	57	56	56	56	55	55	55	55	55	55	55	55	55	55	54	53	51
Sun	46	46	46	47	49	50	52	52	53	53	54	54	55	55	56	57	58	59	60	61	60	61	61	62
Mon	62	62	62	63	63	63	63	64	64	65	66	66	68	69	71	72	73	74	74	73	73	72	72	73
Tue	74	75	77	77	78	79	79	78	79	79	79	80	80	80	80	80	80	—	—	—	—	—	—	—