30 Sep – 6 Oct 2026 · Malaysia

Kota Bharu weekly air quality

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

87.2Weekly mean AQI · Moderate

Official DOE API mean: 71.7. 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

162 eligible observations · 0 excluded.

+20.7 AQI compared with the previous week’s eligible mean of 66.5.

Peak AQI: 145 at Kota Bharu · 30 Sept 2026, 14:00 (UTC+8).

Daily US AQI (PM2.5)

Low 58High 145AQI

30 Sept6 Oct

6 OctDaily mean · Peak 105100.1Avg AQI

Based on 18 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	128.8Unhealthy for Sensitive Groups	145	24 / 0
2026-10-01	100.5Unhealthy for Sensitive Groups	132	24 / 0
2026-10-02	76.7Moderate	84	24 / 0
2026-10-03	70Moderate	86	24 / 0
2026-10-04	65.9Moderate	71	24 / 0
2026-10-05	71.5Moderate	91	24 / 0
2026-10-06	100.1Unhealthy for Sensitive Groups	105	18 / 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	103	105	107	113	117	120	124	128	130	134	138	141	144	144	145	142	138	134	130	128	128	130	134	134
2026-10-01	132	132	132	126	122	117	115	109	107	103	99	96	94	91	90	88	87	88	87	87	84	80	74	72
2026-10-02	71	71	71	72	74	75	75	77	78	80	80	80	78	78	78	80	78	77	75	75	75	78	81	84
2026-10-03	86	83	80	77	74	72	72	71	70	68	68	68	67	67	65	64	65	67	67	67	70	68	64	61
2026-10-04	58	61	61	62	62	62	64	64	65	65	65	67	68	68	68	70	68	70	70	71	68	68	68	68
2026-10-05	67	67	67	67	67	67	67	65	65	65	65	65	67	67	68	70	72	74	77	80	84	86	87	91
2026-10-06	96	99	103	105	103	103	103	103	101	103	101	101	99	97	97	97	97	94	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 118

Unhealthy for Sensitive Groups: 44

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

Kota Bharu air quality.
Weekly station review.

30 Sep – 6 Oct 20267 days · Kelantan

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Kota Bharu, Kelantan

During the week of 30 Sep – 6 Oct 2026, air quality at Kota Bharu averaged an Air Pollutant Index (API) of 71.7 (Moderate). Readings peaked at 131.

Station weekly average

71.7API

Moderate · Sederhana

Daily averages57.5 – 99.6 APIWed → Tue

Explore the week

Week's peak reading: 131UnhealthyPeak during 7-day window
Rank in Kelantan: #2of 2 stationsState avg: 68.7 API
Good to Moderate air: 96%of hourly readings162 readings recorded
National standing: #28of 68 stationsNational avg: 83 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 · 0–150 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	99.6	82	131
Thu, 1 Oct	79.7	62	97
Fri, 2 Oct	65	61	70
Sat, 3 Oct	60.3	54	71
Sun, 4 Oct	57.5	52	61
Mon, 5 Oct	61.3	57	75
Tue, 6 Oct	80.5	77	83

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 Kota Bharu shows local patterns like traffic peaks and afternoon haze accumulation.

050100150APIBrighter cells ran hazier than the rest of this week (52 – 131 API)

Haziest hour of the week: Wed at 14:00 MYT, averaging API 131 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	82	83	84	87	89	91	93	95	96	98	100	114	125	126	131	118	103	98	96	95	95	96	98	98
Thu	97	97	97	94	92	89	88	85	84	82	80	78	77	75	74	73	72	73	72	72	70	67	63	62
Fri	61	61	61	62	63	64	64	65	66	67	67	67	66	66	66	67	66	65	64	64	64	66	68	70
Sat	71	69	67	65	63	62	62	61	60	59	59	59	58	58	57	56	57	58	58	58	60	59	56	54
Sun	52	54	54	55	55	55	56	56	57	57	57	58	59	59	59	60	59	60	60	61	59	59	59	59
Mon	58	58	58	58	58	58	58	57	57	57	57	57	58	58	59	60	62	63	65	67	70	71	72	75
Tue	78	80	82	83	82	82	82	82	81	82	81	81	80	79	79	79	79	77	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana96%156
UnhealthyTidak Sihat4%6
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 162 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 Kota Bharu

Perbandingan purata mingguan dengan stesen berhampiran

Tanah Merah65.7 API
Moderate39 away
Besut69 API
Moderate54 away
Kuala Terengganu86.8 API
Moderate134 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	82	83	84	87	89	91	93	95	96	98	100	114	125	126	131	118	103	98	96	95	95	96	98	98
Thu	97	97	97	94	92	89	88	85	84	82	80	78	77	75	74	73	72	73	72	72	70	67	63	62
Fri	61	61	61	62	63	64	64	65	66	67	67	67	66	66	66	67	66	65	64	64	64	66	68	70
Sat	71	69	67	65	63	62	62	61	60	59	59	59	58	58	57	56	57	58	58	58	60	59	56	54
Sun	52	54	54	55	55	55	56	56	57	57	57	58	59	59	59	60	59	60	60	61	59	59	59	59
Mon	58	58	58	58	58	58	58	57	57	57	57	57	58	58	59	60	62	63	65	67	70	71	72	75
Tue	78	80	82	83	82	82	82	82	81	82	81	81	80	79	79	79	79	77	—	—	—	—	—	—

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	82	83	84	87	89	91	93	95	96	98	100	114	125	126	131	118	103	98	96	95	95	96	98	98
Thu	97	97	97	94	92	89	88	85	84	82	80	78	77	75	74	73	72	73	72	72	70	67	63	62
Fri	61	61	61	62	63	64	64	65	66	67	67	67	66	66	66	67	66	65	64	64	64	66	68	70
Sat	71	69	67	65	63	62	62	61	60	59	59	59	58	58	57	56	57	58	58	58	60	59	56	54
Sun	52	54	54	55	55	55	56	56	57	57	57	58	59	59	59	60	59	60	60	61	59	59	59	59
Mon	58	58	58	58	58	58	58	57	57	57	57	57	58	58	59	60	62	63	65	67	70	71	72	75
Tue	78	80	82	83	82	82	82	82	81	82	81	81	80	79	79	79	79	77	—	—	—	—	—	—