30 Sep – 6 Oct 2026 · Malaysia

Penang weekly air quality

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

80.8Weekly mean AQI · Moderate

Official DOE API mean: 67.3. 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

648 eligible observations · 0 excluded.

+6.3 AQI compared with the previous week’s eligible mean of 74.5.

Peak AQI: 155 at Minden · 30 Sept 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 28High 155AQI

30 Sept6 Oct

6 OctDaily mean · Peak 7858Avg AQI

Based on 72 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
2026-09-30	110.2Unhealthy for Sensitive Groups	155	96 / 0
2026-10-01	68Moderate	91	96 / 0
2026-10-02	97.7Moderate	120	96 / 0
2026-10-03	74.5Moderate	93	96 / 0
2026-10-04	74.9Moderate	91	96 / 0
2026-10-05	76.5Moderate	97	96 / 0
2026-10-06	58Moderate	78	72 / 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
2026-09-30	144	143.3	141.8	140	137	133.3	130	126.5	123.8	120.8	119.3	117	113.3	107.5	100.8	95.5	91.5	88.5	85	82	78	77	75.3	74.3
2026-10-01	72.8	71.8	69.8	68.3	66.8	66	65	63.8	62.3	61.3	60.3	59	58.5	60.3	62	64	66.3	69	72.3	73.8	76.5	78.8	81	83
2026-10-02	85.8	87.8	90	93	96	98.8	100.8	102.8	102.8	104.3	105	106.5	107.5	107.8	106.3	104.3	101.5	99.5	95.3	93.5	92.5	89.8	88.3	85.8
2026-10-03	83	81.5	80	78	76.8	75	74	74.3	75	75.8	74.8	73.8	73	72	73.5	72.8	73.3	71.5	71.8	71.8	71.8	71.5	71.8	71.8
2026-10-04	72.5	73.3	73.5	73.8	74	74.5	74.3	73.3	72.5	72	71.5	70.8	72.3	73.5	73	73.8	76.3	77.5	78.3	79	79.3	79.3	79.5	79.8
2026-10-05	79.3	79.3	79.3	78.8	78.8	78.5	79.5	79.5	79.5	80.5	81.5	81.8	81.3	79.8	79	76.8	75.5	74	72.8	71	69.3	67.8	67.3	66.3
2026-10-06	64.5	63.8	63	61.5	60.5	59.3	57.8	56	55.3	54.8	54.3	54	53.5	53.3	54.3	57.8	59.5	61.8	—	—	—	—	—	—

Observation categories

Good: 22

Moderate: 522

Unhealthy for Sensitive Groups: 96

Unhealthy: 8

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

Stations by US AQI

Sorted by eligible mean AQI. Counts show the available coverage.

Location	Mean AQI	Peak AQI	Official DOE API mean	Eligible / excluded
Seberang Perai	86.8Moderate	132	71.2	162 / 0
Seberang Jaya	83.8Moderate	139	69.3	162 / 0
Minden	83.5Moderate	155	70.2	162 / 0
Balik Pulau	69Moderate	152	58.5	162 / 0

Penang air quality.
Weekly state review.

30 Sep – 6 Oct 20267 days · 4 monitoring stations

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi negeri Penang

Across Penang, air quality for the week of 30 Sep – 6 Oct 2026 averaged an Air Pollutant Index (API) of 67.3 (Moderate).

State weekly average

67.3API

Moderate · Sederhana

Daily averages48.8 – 89.7 APIWed → Tue

Explore the week

State's peak reading: 154MindenPeak reading across state
Cleanest area in state: 58.5Balik PulauLowest weekly average
Good to Moderate air: 98%of all readings648 readings
National standing: #5of 16 states/territoriesNational avg: 83 API

Seven days of air quality in Penang

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, 30 Sep	89.7	59	154
Thu, 1 Oct	58.6	42	75
Fri, 2 Oct	78.3	63	91
Sat, 3 Oct	63.3	56	76
Sun, 4 Oct	63.7	53	75
Mon, 5 Oct	64.1	33	79
Tue, 6 Oct	48.8	21	66

Monitoring stations in Penang

Kedudukan stesen pemantauan di seluruh negeri mengikut purata mingguan

Scale 0 – 175

Seberang Jaya69.3avg
Pulau Pinang
54Moderate107
Seberang Perai71.2avg
Pulau Pinang
54Moderate97
Minden70.2avg
Pulau Pinang
38Moderate154
Balik Pulau58.5avg
Pulau Pinang
21Moderate152

The week, hour by hour

Purata negeri bagi setiap jam sepanjang tujuh hari

Read each row from midnight to 11pm, in Malaysia Time. Hourly state averages show when air quality shifted during each day of the week.

050100150APIBrighter cells ran hazier than the rest of this week (43.8 – 127.3 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 127.3 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	127.3	125.3	124.3	121.3	115.8	106.8	99.5	94.3	92.8	91.3	90.5	89.3	87.3	84.3	80.8	77.8	75.3	73	70.5	68.5	66	65	64	63.3
Thu	62.3	61.5	60.3	59	58	57.5	56.8	56	54.8	53.5	52.3	51	51	52.3	53.8	55.8	57.8	59.5	61.8	63	64.8	66.3	67.8	69.5
Fri	71.3	72.5	74	76	77.8	79.3	80.3	81.3	81.3	82	82.5	83.3	83.8	84	83	82	80.5	79.5	77	76	75.3	73.8	72.8	71
Sat	69.3	68.3	67.3	65.8	65	63.8	63	63.3	63.8	64	63.5	63	62.3	61.5	62.5	62.3	62.3	61.3	61.5	61.3	61.3	61.3	61.5	61.5
Sun	62	62.5	62.8	62.8	63	63.3	63.3	62.5	62.3	61.8	61.5	61	61.8	62.8	62.5	63	64.5	65.3	66	66.5	66.8	66.5	66.8	67
Mon	66.8	66.8	66.8	66.5	66.5	66.3	66.8	66.8	67	67.5	68.3	68.3	67.8	66.5	66.3	64.3	62.8	61.3	60	58.8	57.5	56.5	56.3	55.5
Tue	54.3	53.5	53	52	51.3	50.5	49.3	47.3	46.5	45.8	45	45	44	43.8	45.3	49.3	50.8	52.3	—	—	—	—	—	—

How readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik7%46
ModerateSederhana91%588
UnhealthyTidak Sihat2%14
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 648 hourly station readings.

Health guidelines

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