21 – 27 Oct 2026 · Malaysia

Bintulu weekly air quality

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

99.2Weekly mean AQI · Moderate

Official DOE API mean: 78.5. 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.

+14.9 AQI compared with the previous week’s eligible mean of 84.3.

Peak AQI: 130 at Bintulu · 27 Oct 2026, 01:00 (UTC+8).

Daily US AQI (PM2.5)

Low 65High 130AQI

21 Oct27 Oct

27 OctDaily mean · Peak 130128Avg 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	71.1Moderate	74	24 / 0
2026-10-22	76Moderate	81	24 / 0
2026-10-23	91.9Moderate	109	24 / 0
2026-10-24	114.6Unhealthy for Sensitive Groups	122	24 / 0
2026-10-25	121.6Unhealthy for Sensitive Groups	126	24 / 0
2026-10-26	117.7Unhealthy for Sensitive Groups	124	24 / 0
2026-10-27	128Unhealthy for Sensitive Groups	130	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	65	68	70	71	71	71	71	71	71	72	72	72	72	71	71	72	72	71	71	71	72	72	74	72
2026-10-22	72	71	71	71	71	72	72	74	74	75	74	75	77	77	78	80	80	80	81	80	80	80	80	80
2026-10-23	80	81	81	80	80	81	84	86	87	90	91	91	91	91	91	93	96	97	101	103	105	107	109	109
2026-10-24	109	111	113	115	117	118	115	115	113	111	111	111	113	115	115	115	113	113	115	115	117	118	120	122
2026-10-25	122	122	120	122	122	122	122	122	122	122	120	118	118	118	120	120	122	124	126	124	124	122	122	122
2026-10-26	122	120	120	118	117	117	117	117	118	117	117	117	117	117	111	111	113	115	117	118	120	120	124	124
2026-10-27	126	130	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 66

Unhealthy for Sensitive Groups: 80

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.

21 – 27 Oct 20267 days · Sarawak

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

During the week of 21 – 27 Oct 2026, air quality at Bintulu averaged an Air Pollutant Index (API) of 78.5 (Moderate). Readings peaked at 96.

Station weekly average

78.5API

Moderate · Sederhana

Daily averages61.2 – 95 APIWed → Tue

Explore the week

Week's peak reading: 96ModeratePeak during 7-day window
Rank in Sarawak: #6of 13 stationsState avg: 87.3 API
Good to Moderate air: 100%of hourly readings146 readings recorded
National standing: #36of 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 · 0–125 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, 21 Oct	61.2	57	63
Thu, 22 Oct	64.5	61	68
Fri, 23 Oct	75	67	85
Sat, 24 Oct	87.9	85	92
Sun, 25 Oct	91.8	90	94
Mon, 26 Oct	89.5	86	93
Tue, 27 Oct	95	94	96

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.

0255075100125APIBrighter cells ran hazier than the rest of this week (57 – 96 API)

Haziest hour of the week: Tue at 01:00 MYT, averaging API 96 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	57	59	60	61	61	61	61	61	61	62	62	62	62	61	61	62	62	61	61	61	62	62	63	62
Thu	62	61	61	61	61	62	62	63	63	64	63	64	65	65	66	67	67	67	68	67	67	67	67	67
Fri	67	68	68	67	67	68	70	71	72	74	75	75	75	75	75	76	78	79	81	82	83	84	85	85
Sat	85	86	87	88	89	90	88	88	87	86	86	86	87	88	88	88	87	87	88	88	89	90	91	92
Sun	92	92	91	92	92	92	92	92	92	92	91	90	90	90	91	91	92	93	94	93	93	92	92	92
Mon	92	91	91	90	89	89	89	89	90	89	89	89	89	89	86	86	87	88	89	90	91	91	93	93
Tue	94	96	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana100%146
UnhealthyTidak Sihat0%0
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 Bintulu

Perbandingan purata mingguan dengan stesen berhampiran

Samalaju76.3 API
Moderate51 away
Mukah71 API
Moderate118 away
Kapit84 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	57	59	60	61	61	61	61	61	61	62	62	62	62	61	61	62	62	61	61	61	62	62	63	62
Thu	62	61	61	61	61	62	62	63	63	64	63	64	65	65	66	67	67	67	68	67	67	67	67	67
Fri	67	68	68	67	67	68	70	71	72	74	75	75	75	75	75	76	78	79	81	82	83	84	85	85
Sat	85	86	87	88	89	90	88	88	87	86	86	86	87	88	88	88	87	87	88	88	89	90	91	92
Sun	92	92	91	92	92	92	92	92	92	92	91	90	90	90	91	91	92	93	94	93	93	92	92	92
Mon	92	91	91	90	89	89	89	89	90	89	89	89	89	89	86	86	87	88	89	90	91	91	93	93
Tue	94	96	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	57	59	60	61	61	61	61	61	61	62	62	62	62	61	61	62	62	61	61	61	62	62	63	62
Thu	62	61	61	61	61	62	62	63	63	64	63	64	65	65	66	67	67	67	68	67	67	67	67	67
Fri	67	68	68	67	67	68	70	71	72	74	75	75	75	75	75	76	78	79	81	82	83	84	85	85
Sat	85	86	87	88	89	90	88	88	87	86	86	86	87	88	88	88	87	87	88	88	89	90	91	92
Sun	92	92	91	92	92	92	92	92	92	92	91	90	90	90	91	91	92	93	94	93	93	92	92	92
Mon	92	91	91	90	89	89	89	89	90	89	89	89	89	89	86	86	87	88	89	90	91	91	93	93
Tue	94	96	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—