21 – 27 Oct 2026 · Malaysia

George Town weekly air quality

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

60.5Weekly mean AQI · Moderate

Official DOE API mean: 50.5. 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

153 eligible observations · 0 excluded.

-40.5 AQI compared with the previous week’s eligible mean of 101.

Peak AQI: 83 at Minden · 21 Oct 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 28High 83AQI

21 Oct27 Oct

27 OctDaily mean · Peak 4843.9Avg AQI

Based on 9 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	71.2Moderate	83	24 / 0
2026-10-22	79.5Moderate	83	24 / 0
2026-10-23	71.8Moderate	74	24 / 0
2026-10-24	71.3Moderate	78	24 / 0
2026-10-25	42Good	62	24 / 0
2026-10-26	33.8Good	40	24 / 0
2026-10-27	43.9Good	48	9 / 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	83	80	77	74	71	70	70	68	67	68	68	68	68	67	65	65	67	68	70	71	72	74	77	80
2026-10-22	80	80	80	80	80	80	80	80	80	81	81	81	81	83	83	83	81	80	78	78	77	75	74	72
2026-10-23	74	74	74	74	74	74	72	72	72	72	72	74	74	72	71	71	70	70	70	70	70	70	68	68
2026-10-24	68	68	70	71	72	74	77	78	78	78	77	75	74	72	72	71	71	71	70	67	65	65	64	62
2026-10-25	62	61	59	57	55	53	51	45	41	40	36	36	34	36	34	33	36	34	34	36	36	34	33	32
2026-10-26	31	31	29	31	31	29	28	29	32	36	31	36	37	36	36	37	34	36	36	36	36	36	37	40
2026-10-27	40	38	41	40	44	48	48	48	48	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 50

Moderate: 103

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

George Town air quality.
Weekly city review.

21 – 27 Oct 20267 days · Penang

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi bandar George Town, Penang

George Town air quality averaged an Air Pollutant Index (API) of 50.5 (Moderate) during the week of 21 – 27 Oct 2026, monitored via the Minden station.

City weekly average

50.5API

Moderate · Sederhana

Daily averages25.4 – 66.8 APIWed → Tue

Explore the week

Week's highest reading: 69ModeratePeak reading during period
Monitoring station: MindenPenangRepresentative station
Good to Moderate air: 100%of hourly readings153 readings recorded
State & National context: 54.1 APIPenang avgNational avg: 82.9 API

Seven days of air quality in George Town

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	61	57	69
Thu, 22 Oct	66.8	62	69
Fri, 23 Oct	61.5	59	63
Sat, 24 Oct	61.2	55	66
Sun, 25 Oct	33.4	24	55
Mon, 26 Oct	25.4	21	30
Tue, 27 Oct	33	29	36

The week, hour by hour

Purata setiap jam sepanjang tujuh hari di stesen berkaitan

Hourly readings at Minden indicate typical diurnal trends such as morning traffic and afternoon dispersion in George Town.

020406080APIBrighter cells ran hazier than the rest of this week (21 – 69 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 69 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	69	67	65	63	61	60	60	59	58	59	59	59	59	58	57	57	58	59	60	61	62	63	65	67
Thu	67	67	67	67	67	67	67	67	67	68	68	68	68	69	69	69	68	67	66	66	65	64	63	62
Fri	63	63	63	63	63	63	62	62	62	62	62	63	63	62	61	61	60	60	60	60	60	60	59	59
Sat	59	59	60	61	62	63	65	66	66	66	65	64	63	62	62	61	61	61	60	58	57	57	56	55
Sun	55	54	53	51	46	43	39	34	31	30	27	27	26	27	26	25	27	26	26	27	27	26	25	24
Mon	23	23	22	23	23	22	21	22	24	27	23	27	28	27	27	28	26	27	27	27	27	27	28	30
Tue	30	29	31	30	33	36	36	36	36	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik35%53
ModerateSederhana65%100
UnhealthyTidak Sihat0%0
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 153 hourly station readings.

Health advisory

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

Comparison with nearby cities

Perbandingan purata kualiti udara mingguan dengan bandar berdekatan

Johor Bahru113 API
UnhealthyLive status →
Kuala Lumpur106.2 API
UnhealthyLive status →
Kuching107 API
UnhealthyLive status →

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	69	67	65	63	61	60	60	59	58	59	59	59	59	58	57	57	58	59	60	61	62	63	65	67
Thu	67	67	67	67	67	67	67	67	67	68	68	68	68	69	69	69	68	67	66	66	65	64	63	62
Fri	63	63	63	63	63	63	62	62	62	62	62	63	63	62	61	61	60	60	60	60	60	60	59	59
Sat	59	59	60	61	62	63	65	66	66	66	65	64	63	62	62	61	61	61	60	58	57	57	56	55
Sun	55	54	53	51	46	43	39	34	31	30	27	27	26	27	26	25	27	26	26	27	27	26	25	24
Mon	23	23	22	23	23	22	21	22	24	27	23	27	28	27	27	28	26	27	27	27	27	27	28	30
Tue	30	29	31	30	33	36	36	36	36	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	69	67	65	63	61	60	60	59	58	59	59	59	59	58	57	57	58	59	60	61	62	63	65	67
Thu	67	67	67	67	67	67	67	67	67	68	68	68	68	69	69	69	68	67	66	66	65	64	63	62
Fri	63	63	63	63	63	63	62	62	62	62	62	63	63	62	61	61	60	60	60	60	60	60	59	59
Sat	59	59	60	61	62	63	65	66	66	66	65	64	63	62	62	61	61	61	60	58	57	57	56	55
Sun	55	54	53	51	46	43	39	34	31	30	27	27	26	27	26	25	27	26	26	27	27	26	25	24
Mon	23	23	22	23	23	22	21	22	24	27	23	27	28	27	27	28	26	27	27	27	27	27	28	30
Tue	30	29	31	30	33	36	36	36	36	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—