21 – 27 Oct 2026 · Malaysia

Samalaju weekly air quality

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

94.7Weekly mean AQI · Moderate

Official DOE API mean: 76. 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

145 eligible observations · 0 excluded.

+4 AQI compared with the previous week’s eligible mean of 90.7.

Peak AQI: 139 at Samalaju · 27 Oct 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 62High 139AQI

21 Oct27 Oct

27 OctDaily mean · Peak 139139Avg AQI

Based on 1 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	66.5Moderate	70	24 / 0
2026-10-22	77.5Moderate	86	24 / 0
2026-10-23	88.4Moderate	101	24 / 0
2026-10-24	108.3Unhealthy for Sensitive Groups	115	24 / 0
2026-10-25	104Unhealthy for Sensitive Groups	117	24 / 0
2026-10-26	121.9Unhealthy for Sensitive Groups	138	24 / 0
2026-10-27	139Unhealthy for Sensitive Groups	139	1 / 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	62	64	64	65	65	65	67	67	67	67	68	68	67	67	67	67	65	65	67	67	67	68	70	70
2026-10-22	70	71	70	70	68	70	71	71	71	71	74	77	78	81	81	83	84	84	84	86	86	86	86	86
2026-10-23	86	86	86	86	86	86	86	86	86	87	86	84	84	84	84	87	87	90	91	93	94	96	99	101
2026-10-24	101	103	105	107	109	111	113	113	111	111	113	113	113	115	113	109	109	107	107	107	105	103	101	99
2026-10-25	99	97	97	96	99	97	97	97	97	97	99	101	103	103	105	107	109	111	113	111	113	115	115	117
2026-10-26	118	120	120	120	118	118	118	118	120	120	118	118	117	115	118	120	122	122	124	126	130	132	136	138
2026-10-27	139	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 83

Unhealthy for Sensitive Groups: 62

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

Samalaju air quality.
Weekly station review.

21 – 27 Oct 20267 days · Sarawak

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

During the week of 21 – 27 Oct 2026, air quality at Samalaju averaged an Air Pollutant Index (API) of 76 (Moderate). Readings peaked at 105.

Station weekly average

76API

Moderate · Sederhana

Daily averages57.8 – 105 APIWed → Tue

Explore the week

Week's peak reading: 105UnhealthyPeak during 7-day window
Rank in Sarawak: #5of 13 stationsState avg: 87.4 API
Good to Moderate air: 99%of hourly readings145 readings recorded
National standing: #35of 68 stationsNational avg: 84.4 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 · 0–125 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	57.8	55	60
Thu, 22 Oct	65.3	59	71
Fri, 23 Oct	72.8	70	81
Sat, 24 Oct	84.6	80	88
Sun, 25 Oct	82.5	78	89
Mon, 26 Oct	91.9	88	100
Tue, 27 Oct	105	105	105

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

0255075100125APIBrighter cells ran hazier than the rest of this week (55 – 105 API)

Haziest hour of the week: Tue at 00:00 MYT, averaging API 105 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	55	56	56	57	57	57	58	58	58	58	59	59	58	58	58	58	57	57	58	58	58	59	60	60
Thu	60	61	60	60	59	60	61	61	61	61	63	65	66	68	68	69	70	70	70	71	71	71	71	71
Fri	71	71	71	71	71	71	71	71	71	72	71	70	70	70	70	72	72	74	75	76	77	78	80	81
Sat	81	82	83	84	85	86	87	87	86	86	87	87	87	88	87	85	85	84	84	84	83	82	81	80
Sun	80	79	79	78	80	79	79	79	79	79	80	81	82	82	83	84	85	86	87	86	87	88	88	89
Mon	90	91	91	91	90	90	90	90	91	91	90	90	89	88	90	91	92	92	93	94	96	97	99	100
Tue	105	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana99%144
UnhealthyTidak Sihat1%1
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 145 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 Samalaju

Perbandingan purata mingguan dengan stesen berhampiran

Bintulu78.4 API
Moderate51 away
Miri64.4 API
Moderate125 away
ILP Miri63 API
Moderate133 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	55	56	56	57	57	57	58	58	58	58	59	59	58	58	58	58	57	57	58	58	58	59	60	60
Thu	60	61	60	60	59	60	61	61	61	61	63	65	66	68	68	69	70	70	70	71	71	71	71	71
Fri	71	71	71	71	71	71	71	71	71	72	71	70	70	70	70	72	72	74	75	76	77	78	80	81
Sat	81	82	83	84	85	86	87	87	86	86	87	87	87	88	87	85	85	84	84	84	83	82	81	80
Sun	80	79	79	78	80	79	79	79	79	79	80	81	82	82	83	84	85	86	87	86	87	88	88	89
Mon	90	91	91	91	90	90	90	90	91	91	90	90	89	88	90	91	92	92	93	94	96	97	99	100
Tue	105	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	55	56	56	57	57	57	58	58	58	58	59	59	58	58	58	58	57	57	58	58	58	59	60	60
Thu	60	61	60	60	59	60	61	61	61	61	63	65	66	68	68	69	70	70	70	71	71	71	71	71
Fri	71	71	71	71	71	71	71	71	71	72	71	70	70	70	70	72	72	74	75	76	77	78	80	81
Sat	81	82	83	84	85	86	87	87	86	86	87	87	87	88	87	85	85	84	84	84	83	82	81	80
Sun	80	79	79	78	80	79	79	79	79	79	80	81	82	82	83	84	85	86	87	86	87	88	88	89
Mon	90	91	91	91	90	90	90	90	91	91	90	90	89	88	90	91	92	92	93	94	96	97	99	100
Tue	105	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—