30 Sep – 6 Oct 2026 · Malaysia

Bintulu weekly air quality

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

91Weekly mean AQI · Moderate

Official DOE API mean: 73.9. 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

163 eligible observations · 0 excluded.

-27.7 AQI compared with the previous week’s eligible mean of 118.7.

Peak AQI: 122 at Bintulu · 3 Oct 2026, 08:00 (UTC+8).

Daily US AQI (PM2.5)

Low 61High 122AQI

30 Sept6 Oct

6 OctDaily mean · Peak 122113.1Avg AQI

Based on 19 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	79.6Moderate	83	24 / 0
2026-10-01	65Moderate	77	24 / 0
2026-10-02	73.8Moderate	88	24 / 0
2026-10-03	113.7Unhealthy for Sensitive Groups	122	24 / 0
2026-10-04	99.3Moderate	115	24 / 0
2026-10-05	97.3Moderate	101	24 / 0
2026-10-06	113.1Unhealthy for Sensitive Groups	122	19 / 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	77	77	78	80	80	80	80	80	81	83	81	81	81	81	80	80	78	78	78	78	80	80	80	78
2026-10-01	77	77	74	72	70	67	65	65	62	62	62	62	62	62	62	62	62	62	62	61	61	62	62	64
2026-10-02	62	62	64	64	65	65	67	67	67	67	68	70	71	74	75	78	81	83	84	86	87	88	88	88
2026-10-03	93	96	101	107	109	113	115	120	122	120	120	118	117	117	117	117	115	115	115	117	115	115	117	117
2026-10-04	115	111	107	105	103	101	99	97	94	96	96	96	97	97	97	96	96	97	97	97	97	97	97	99
2026-10-05	99	97	97	97	97	96	96	96	96	96	96	96	96	96	96	96	97	97	97	99	99	101	101	101
2026-10-06	101	103	105	105	107	107	109	111	113	115	117	118	120	120	122	120	120	118	117	—	—	—	—	—

Observation categories

Good: 0

Moderate: 113

Unhealthy for Sensitive Groups: 50

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

Bintulu air quality.
Weekly station review.

30 Sep – 6 Oct 20267 days · Sarawak

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Bintulu, Sarawak

During the week of 30 Sep – 6 Oct 2026, air quality at Bintulu averaged an Air Pollutant Index (API) of 73.9 (Moderate). Readings peaked at 92.

Station weekly average

73.9API

Moderate · Sederhana

Daily averages56.9 – 87.4 APIWed → Tue

Explore the week

Week's peak reading: 92ModeratePeak during 7-day window
Rank in Sarawak: #9of 13 stationsState avg: 73 API
Good to Moderate air: 100%of hourly readings163 readings recorded
National standing: #30of 68 stationsNational avg: 83.2 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 · 0–100 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	66.9	65	69
Thu, 1 Oct	56.9	54	65
Fri, 2 Oct	62.9	55	73
Sat, 3 Oct	87.4	76	92
Sun, 4 Oct	80	77	88
Mon, 5 Oct	78.9	78	81
Tue, 6 Oct	87.2	81	92

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

0255075100APIBrighter cells ran hazier than the rest of this week (54 – 92 API)

Haziest hour of the week: Sat at 08:00 MYT, averaging API 92 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	65	65	66	67	67	67	67	67	68	69	68	68	68	68	67	67	66	66	66	66	67	67	67	66
Thu	65	65	63	62	60	58	57	57	55	55	55	55	55	55	55	55	55	55	55	54	54	55	55	56
Fri	55	55	56	56	57	57	58	58	58	58	59	60	61	63	64	66	68	69	70	71	72	73	73	73
Sat	76	78	81	84	85	87	88	91	92	91	91	90	89	89	89	89	88	88	88	89	88	88	89	89
Sun	88	86	84	83	82	81	80	79	77	78	78	78	79	79	79	78	78	79	79	79	79	79	79	80
Mon	80	79	79	79	79	78	78	78	78	78	78	78	78	78	78	78	79	79	79	80	80	81	81	81
Tue	81	82	83	83	84	84	85	86	87	88	89	90	91	91	92	91	91	90	89	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana100%163
UnhealthyTidak Sihat0%0
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 163 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 Bintulu

Perbandingan purata mingguan dengan stesen berhampiran

Samalaju70.7 API
Moderate51 away
Mukah66 API
Moderate118 away
Kapit68.3 API
Moderate130 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	65	65	66	67	67	67	67	67	68	69	68	68	68	68	67	67	66	66	66	66	67	67	67	66
Thu	65	65	63	62	60	58	57	57	55	55	55	55	55	55	55	55	55	55	55	54	54	55	55	56
Fri	55	55	56	56	57	57	58	58	58	58	59	60	61	63	64	66	68	69	70	71	72	73	73	73
Sat	76	78	81	84	85	87	88	91	92	91	91	90	89	89	89	89	88	88	88	89	88	88	89	89
Sun	88	86	84	83	82	81	80	79	77	78	78	78	79	79	79	78	78	79	79	79	79	79	79	80
Mon	80	79	79	79	79	78	78	78	78	78	78	78	78	78	78	78	79	79	79	80	80	81	81	81
Tue	81	82	83	83	84	84	85	86	87	88	89	90	91	91	92	91	91	90	89	—	—	—	—	—

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	65	65	66	67	67	67	67	67	68	69	68	68	68	68	67	67	66	66	66	66	67	67	67	66
Thu	65	65	63	62	60	58	57	57	55	55	55	55	55	55	55	55	55	55	55	54	54	55	55	56
Fri	55	55	56	56	57	57	58	58	58	58	59	60	61	63	64	66	68	69	70	71	72	73	73	73
Sat	76	78	81	84	85	87	88	91	92	91	91	90	89	89	89	89	88	88	88	89	88	88	89	89
Sun	88	86	84	83	82	81	80	79	77	78	78	78	79	79	79	78	78	79	79	79	79	79	79	80
Mon	80	79	79	79	79	78	78	78	78	78	78	78	78	78	78	78	79	79	79	80	80	81	81	81
Tue	81	82	83	83	84	84	85	86	87	88	89	90	91	91	92	91	91	90	89	—	—	—	—	—