21 – 27 Oct 2026 · Malaysia

Balik Pulau weekly air quality

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

59.3Weekly mean AQI · Moderate

Official DOE API mean: 45.1. 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

123 eligible observations · 26 excluded.

-12.1 AQI compared with the previous week’s eligible mean of 71.4.

Peak AQI: 80 at Balik Pulau · 22 Oct 2026, 05:00 (UTC+8).

Daily US AQI (PM2.5)

Low 16High 80AQI

21 Oct27 Oct

27 OctDaily mean · Peak 2220.6Avg AQI

Based on 5 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	62.5Moderate	77	24 / 0
2026-10-22	76Moderate	80	24 / 0
2026-10-23	71.6Moderate	74	24 / 0
2026-10-24	63.2Moderate	68	24 / 0
2026-10-25	35.7Good	54	13 / 11
2026-10-26	18.1Good	22	9 / 15
2026-10-27	20.6Good	22	5 / 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	55	55	55	55	55	55	55	56	57	58	59	61	62	64	65	67	67	68	68	68	71	72	74	77
2026-10-22	78	78	78	78	78	80	80	78	78	77	77	75	75	74	74	74	74	74	75	75	75	74	74	71
2026-10-23	71	72	72	72	72	72	72	72	72	72	74	74	74	74	74	72	72	72	72	71	68	68	68	67
2026-10-24	67	65	65	67	67	68	68	68	68	68	67	65	65	64	62	62	62	59	59	58	58	57	55	53
2026-10-25	54	53	52	48	42	37	33	29	27	25	22	22	—	—	—	—	—	—	—	—	—	—	—	20
2026-10-26	—	16	17	18	18	18	18	18	18	—	—	—	—	—	—	—	—	—	—	—	—	—	—	22
2026-10-27	22	21	20	20	20	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 24

Moderate: 99

Unhealthy for Sensitive Groups: 0

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

Balik Pulau air quality.
Weekly station review.

21 – 27 Oct 20267 days · Penang

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Balik Pulau, Penang

During the week of 21 – 27 Oct 2026, air quality at Balik Pulau averaged an Air Pollutant Index (API) of 45.1 (Good). Readings peaked at 67.

Station weekly average

45.1API

Good · Baik

Daily averages15.6 – 64.5 APIWed → Tue

Explore the week

Week's peak reading: 67ModeratePeak during 7-day window
Rank in Penang: #1of 4 stationsState avg: 54.6 API
Good to Moderate air: 100%of hourly readings149 readings recorded
National standing: #4of 68 stationsNational avg: 83.6 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 · 0–80 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	54.1	46	65
Thu, 22 Oct	64.5	61	67
Fri, 23 Oct	61.6	58	63
Sat, 24 Oct	55.3	43	59
Sun, 25 Oct	23.7	15	45
Mon, 26 Oct	17.8	12	26
Tue, 27 Oct	15.6	15	17

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 Balik Pulau shows local patterns like traffic peaks and afternoon haze accumulation.

020406080APIBrighter cells ran hazier than the rest of this week (12 – 67 API)

Haziest hour of the week: Thu at 05:00 MYT, averaging API 67 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	47	47	47	47	46	47	47	49	51	52	53	54	55	56	57	58	58	59	59	59	61	62	63	65
Thu	66	66	66	66	66	67	67	66	66	65	65	64	64	63	63	63	63	63	64	64	64	63	63	61
Fri	61	62	62	62	62	62	62	62	62	62	63	63	63	63	63	62	62	62	62	61	59	59	59	58
Sat	58	57	57	58	58	59	59	59	59	59	58	57	57	56	55	55	55	53	53	52	52	51	46	43
Sun	45	43	40	36	32	28	25	22	20	19	17	17	16	18	18	18	19	19	21	23	21	19	17	15
Mon	13	12	13	14	14	14	14	14	14	14	14	16	18	19	20	21	24	24	25	26	25	22	19	17
Tue	17	16	15	15	15	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik42%63
ModerateSederhana58%86
UnhealthyTidak Sihat0%0
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 149 hourly station readings.

What it meant for this area

Panduan kesihatan mengikut kategori kualiti udara

Air quality is good. Outdoor activities are fine for everyone.

Kualiti udara baik. Aktiviti luar sesuai untuk semua.

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 Balik Pulau

Perbandingan purata mingguan dengan stesen berhampiran

Minden50.9 API
Moderate10 away
Seberang Jaya54.4 API
Moderate22 away
Seberang Perai67.9 API
Moderate25 away
Kulim Hi-Tech48.1 API
Good42 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	47	47	47	47	46	47	47	49	51	52	53	54	55	56	57	58	58	59	59	59	61	62	63	65
Thu	66	66	66	66	66	67	67	66	66	65	65	64	64	63	63	63	63	63	64	64	64	63	63	61
Fri	61	62	62	62	62	62	62	62	62	62	63	63	63	63	63	62	62	62	62	61	59	59	59	58
Sat	58	57	57	58	58	59	59	59	59	59	58	57	57	56	55	55	55	53	53	52	52	51	46	43
Sun	45	43	40	36	32	28	25	22	20	19	17	17	16	18	18	18	19	19	21	23	21	19	17	15
Mon	13	12	13	14	14	14	14	14	14	14	14	16	18	19	20	21	24	24	25	26	25	22	19	17
Tue	17	16	15	15	15	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	47	47	47	47	46	47	47	49	51	52	53	54	55	56	57	58	58	59	59	59	61	62	63	65
Thu	66	66	66	66	66	67	67	66	66	65	65	64	64	63	63	63	63	63	64	64	64	63	63	61
Fri	61	62	62	62	62	62	62	62	62	62	63	63	63	63	63	62	62	62	62	61	59	59	59	58
Sat	58	57	57	58	58	59	59	59	59	59	58	57	57	56	55	55	55	53	53	52	52	51	46	43
Sun	45	43	40	36	32	28	25	22	20	19	17	17	16	18	18	18	19	19	21	23	21	19	17	15
Mon	13	12	13	14	14	14	14	14	14	14	14	16	18	19	20	21	24	24	25	26	25	22	19	17
Tue	17	16	15	15	15	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—