21 – 27 Oct 2026 · Malaysia

Tanjung Malim weekly air quality

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

82.3Weekly mean AQI · Moderate

Official DOE API mean: 66.4. 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

147 eligible observations · 0 excluded.

-52.6 AQI compared with the previous week’s eligible mean of 134.9.

Peak AQI: 113 at Tanjung Malim · 21 Oct 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 31High 113AQI

21 Oct27 Oct

27 OctDaily mean · Peak 4443.3Avg AQI

Based on 3 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	100.8Unhealthy for Sensitive Groups	113	24 / 0
2026-10-22	103.8Unhealthy for Sensitive Groups	109	24 / 0
2026-10-23	96.8Moderate	101	24 / 0
2026-10-24	92Moderate	99	24 / 0
2026-10-25	69.1Moderate	90	24 / 0
2026-10-26	36Good	47	24 / 0
2026-10-27	43.3Good	44	3 / 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	113	111	111	111	109	109	109	105	103	101	99	97	96	94	94	93	93	93	91	94	96	97	99	101
2026-10-22	103	103	103	103	103	101	101	101	101	101	101	103	105	107	109	109	109	107	107	105	105	103	101	101
2026-10-23	99	99	99	99	99	99	99	101	101	101	101	99	99	99	99	97	96	94	91	90	90	90	90	91
2026-10-24	91	93	94	96	96	97	99	97	99	99	97	96	93	88	86	84	84	84	86	88	90	91	90	90
2026-10-25	90	88	87	86	84	81	78	75	72	70	68	67	67	67	65	64	62	61	59	57	54	53	52	51
2026-10-26	47	44	40	34	32	32	32	32	33	32	32	32	32	31	32	32	34	36	37	38	40	40	45	45
2026-10-27	44	42	44	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 27

Moderate: 81

Unhealthy for Sensitive Groups: 39

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

Tanjung Malim air quality.
Weekly station review.

21 – 27 Oct 20267 days · Perak

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Tanjung Malim, Perak

During the week of 21 – 27 Oct 2026, air quality at Tanjung Malim averaged an Air Pollutant Index (API) of 66.4 (Moderate). Readings peaked at 87.

Station weekly average

66.4API

Moderate · Sederhana

Daily averages27.1 – 82.4 APIWed → Tue

Explore the week

Week's peak reading: 87ModeratePeak during 7-day window
Rank in Perak: #2of 5 stationsState avg: 68.4 API
Good to Moderate air: 100%of hourly readings147 readings recorded
National standing: #23of 68 stationsNational avg: 84 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, 21 Oct	80.6	75	87
Thu, 22 Oct	82.4	81	85
Fri, 23 Oct	78.5	74	81
Sat, 24 Oct	75.4	70	80
Sun, 25 Oct	58.5	38	74
Mon, 26 Oct	27.1	23	35
Tue, 27 Oct	32.7	32	33

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 Tanjung Malim shows local patterns like traffic peaks and afternoon haze accumulation.

0255075100APIBrighter cells ran hazier than the rest of this week (23 – 87 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 87 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	87	86	86	86	85	85	85	83	82	81	80	79	78	77	77	76	76	76	75	77	78	79	80	81
Thu	82	82	82	82	82	81	81	81	81	81	81	82	83	84	85	85	85	84	84	83	83	82	81	81
Fri	80	80	80	80	80	80	80	81	81	81	81	80	80	80	80	79	78	77	75	74	74	74	74	75
Sat	75	76	77	78	78	79	80	79	80	80	79	78	76	73	71	70	70	70	71	73	74	75	74	74
Sun	74	73	72	71	70	68	66	64	62	60	59	58	58	58	57	56	55	54	53	51	45	42	41	38
Mon	35	33	30	26	24	24	24	24	25	24	24	24	24	23	24	24	26	27	28	29	30	30	34	34
Tue	33	32	33	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik21%31
ModerateSederhana79%116
UnhealthyTidak Sihat0%0
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 147 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 Tanjung Malim

Perbandingan purata mingguan dengan stesen berhampiran

Kuala Selangor68.9 API
Moderate50 away
Batu Muda133.5 API
Unhealthy56 away
Petaling Jaya113.3 API
Unhealthy63 away
Shah Alam108.9 API
Unhealthy65 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	87	86	86	86	85	85	85	83	82	81	80	79	78	77	77	76	76	76	75	77	78	79	80	81
Thu	82	82	82	82	82	81	81	81	81	81	81	82	83	84	85	85	85	84	84	83	83	82	81	81
Fri	80	80	80	80	80	80	80	81	81	81	81	80	80	80	80	79	78	77	75	74	74	74	74	75
Sat	75	76	77	78	78	79	80	79	80	80	79	78	76	73	71	70	70	70	71	73	74	75	74	74
Sun	74	73	72	71	70	68	66	64	62	60	59	58	58	58	57	56	55	54	53	51	45	42	41	38
Mon	35	33	30	26	24	24	24	24	25	24	24	24	24	23	24	24	26	27	28	29	30	30	34	34
Tue	33	32	33	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	87	86	86	86	85	85	85	83	82	81	80	79	78	77	77	76	76	76	75	77	78	79	80	81
Thu	82	82	82	82	82	81	81	81	81	81	81	82	83	84	85	85	85	84	84	83	83	82	81	81
Fri	80	80	80	80	80	80	80	81	81	81	81	80	80	80	80	79	78	77	75	74	74	74	74	75
Sat	75	76	77	78	78	79	80	79	80	80	79	78	76	73	71	70	70	70	71	73	74	75	74	74
Sun	74	73	72	71	70	68	66	64	62	60	59	58	58	58	57	56	55	54	53	51	45	42	41	38
Mon	35	33	30	26	24	24	24	24	25	24	24	24	24	23	24	24	26	27	28	29	30	30	34	34
Tue	33	32	33	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—