21 – 27 Oct 2026 · Malaysia

Sibu weekly air quality

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

109.6Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 92.4. 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.

+23 AQI compared with the previous week’s eligible mean of 86.6.

Peak AQI: 158 at Sibu · 26 Oct 2026, 09:00 (UTC+8).

Daily US AQI (PM2.5)

Low 58High 158AQI

21 Oct27 Oct

27 OctDaily mean · Peak 134133Avg 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	63.9Moderate	70	24 / 0
2026-10-22	78.3Moderate	93	24 / 0
2026-10-23	109.3Unhealthy for Sensitive Groups	118	24 / 0
2026-10-24	114.5Unhealthy for Sensitive Groups	132	24 / 0
2026-10-25	138.5Unhealthy for Sensitive Groups	152	24 / 0
2026-10-26	150.8Unhealthy	158	24 / 0
2026-10-27	133Unhealthy for Sensitive Groups	134	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	70	70	68	67	65	64	64	62	61	61	61	59	59	58	59	61	64	65	65	65	65	67	67	67
2026-10-22	68	70	70	71	72	72	72	74	74	75	77	77	78	78	80	81	81	83	83	86	87	88	90	93
2026-10-23	94	96	96	97	101	103	105	107	109	111	111	111	115	117	118	118	117	115	117	115	115	113	111	111
2026-10-24	109	109	107	107	107	109	109	109	109	111	113	115	115	115	113	113	115	115	117	120	124	126	130	132
2026-10-25	134	134	134	134	134	132	132	130	128	126	124	124	130	134	138	143	148	152	152	152	152	152	152	152
2026-10-26	152	152	152	154	154	154	155	155	156	158	158	158	156	155	155	154	152	150	147	144	141	138	136	134
2026-10-27	134	132	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 52

Unhealthy for Sensitive Groups: 70

Unhealthy: 24

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

Sibu air quality.
Weekly station review.

21 – 27 Oct 20267 days · Sarawak

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

During the week of 21 – 27 Oct 2026, air quality at Sibu averaged an Air Pollutant Index (API) of 92.4 (Moderate). Readings peaked at 156.

Station weekly average

92.4API

Moderate · Sederhana

Daily averages56.1 – 143.3 APIWed → Tue

Explore the week

Week's peak reading: 156UnhealthyPeak during 7-day window
Rank in Sarawak: #9of 13 stationsState avg: 87.3 API
Good to Moderate air: 79%of hourly readings146 readings recorded
National standing: #42of 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	56.1	52	60
Thu, 22 Oct	66	59	76
Fri, 23 Oct	85.1	77	90
Sat, 24 Oct	87.9	84	97
Sun, 25 Oct	115.6	93	152
Mon, 26 Oct	143.3	98	156
Tue, 27 Oct	97.5	97	98

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

0255075100125150175APIBrighter cells ran hazier than the rest of this week (52 – 156 API)

Haziest hour of the week: Mon at 09:00 MYT, averaging API 156 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	60	60	59	58	57	56	56	55	54	54	54	53	53	52	53	54	56	57	57	57	57	58	58	58
Thu	59	60	60	61	62	62	62	63	63	64	65	65	66	66	67	68	68	69	69	71	72	73	74	76
Fri	77	78	78	79	81	82	83	84	85	86	86	86	88	89	90	90	89	88	89	88	88	87	86	86
Sat	85	85	84	84	84	85	85	85	85	86	87	88	88	88	87	87	88	88	89	91	93	94	96	97
Sun	98	98	98	98	98	97	97	96	95	94	93	93	96	98	100	121	141	152	152	152	152	152	152	152
Mon	152	152	152	153	153	153	154	154	155	156	156	156	155	154	154	153	152	149	136	126	115	103	99	98
Tue	98	97	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana79%115
UnhealthyTidak Sihat21%31
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 Sibu

Perbandingan purata mingguan dengan stesen berhampiran

Sarikei86.1 API
Moderate40 away
Mukah71 API
Moderate65 away
Kapit84 API
Moderate126 away
Sri Aman122.1 API
Unhealthy128 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	60	60	59	58	57	56	56	55	54	54	54	53	53	52	53	54	56	57	57	57	57	58	58	58
Thu	59	60	60	61	62	62	62	63	63	64	65	65	66	66	67	68	68	69	69	71	72	73	74	76
Fri	77	78	78	79	81	82	83	84	85	86	86	86	88	89	90	90	89	88	89	88	88	87	86	86
Sat	85	85	84	84	84	85	85	85	85	86	87	88	88	88	87	87	88	88	89	91	93	94	96	97
Sun	98	98	98	98	98	97	97	96	95	94	93	93	96	98	100	121	141	152	152	152	152	152	152	152
Mon	152	152	152	153	153	153	154	154	155	156	156	156	155	154	154	153	152	149	136	126	115	103	99	98
Tue	98	97	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	60	60	59	58	57	56	56	55	54	54	54	53	53	52	53	54	56	57	57	57	57	58	58	58
Thu	59	60	60	61	62	62	62	63	63	64	65	65	66	66	67	68	68	69	69	71	72	73	74	76
Fri	77	78	78	79	81	82	83	84	85	86	86	86	88	89	90	90	89	88	89	88	88	87	86	86
Sat	85	85	84	84	84	85	85	85	85	86	87	88	88	88	87	87	88	88	89	91	93	94	96	97
Sun	98	98	98	98	98	97	97	96	95	94	93	93	96	98	100	121	141	152	152	152	152	152	152	152
Mon	152	152	152	153	153	153	154	154	155	156	156	156	155	154	154	153	152	149	136	126	115	103	99	98
Tue	98	97	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—