30 Sep – 6 Oct 2026 · Malaysia

JOHAN SETIA weekly air quality

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

134.1Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 118.3. 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

155 eligible observations · 0 excluded.

+31.4 AQI compared with the previous week’s eligible mean of 102.7.

Peak AQI: 189 at JOHAN SETIA · 30 Sept 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 75High 189AQI

30 Sept6 Oct

6 OctDaily mean · Peak 139129.7Avg AQI

Based on 11 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	178.1Unhealthy	189	24 / 0
2026-10-01	156.5Unhealthy	163	24 / 0
2026-10-02	103.2Unhealthy for Sensitive Groups	143	24 / 0
2026-10-03	95.4Moderate	111	24 / 0
2026-10-04	125.3Unhealthy for Sensitive Groups	152	24 / 0
2026-10-05	148.2Unhealthy for Sensitive Groups	155	24 / 0
2026-10-06	129.7Unhealthy for Sensitive Groups	139	11 / 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	189	188	188	186	186	185	185	185	184	185	184	182	179	178	175	174	171	170	169	169	167	166	165	165
2026-10-01	163	163	163	163	162	160	160	159	158	156	158	158	159	158	158	156	156	155	154	152	150	147	145	144
2026-10-02	143	140	138	134	130	126	122	118	115	109	103	97	93	90	87	83	78	75	78	83	84	84	84	83
2026-10-03	81	80	78	78	81	84	84	87	88	93	94	93	96	99	99	101	107	111	111	109	107	109	109	111
2026-10-04	111	113	115	115	113	115	115	115	117	117	118	122	126	126	128	130	130	130	132	134	138	143	151	152
2026-10-05	154	154	155	155	155	155	155	155	155	154	154	152	152	152	151	151	149	145	142	139	136	132	128	126
2026-10-06	122	122	124	126	128	130	132	134	134	136	139	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 28

Unhealthy for Sensitive Groups: 65

Unhealthy: 62

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

JOHAN SETIA air quality.
Weekly station review.

30 Sep – 6 Oct 20267 days · Selangor

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen JOHAN SETIA, Selangor

During the week of 30 Sep – 6 Oct 2026, air quality at JOHAN SETIA averaged an Air Pollutant Index (API) of 118.3 (Unhealthy). Readings peaked at 179.

Station weekly average

118.3API

Unhealthy · Tidak Sihat

Daily averages77 – 171 APIWed → Tue

Explore the week

Week's peak reading: 179UnhealthyPeak during 7-day window
Rank in Selangor: #6of 6 stationsState avg: 98.4 API
Good to Moderate air: 52%of hourly readings155 readings recorded
National standing: #64of 68 stationsNational avg: 82.1 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 · 0–200 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	171	161	179
Thu, 1 Oct	153	124	160
Fri, 2 Oct	82.1	64	121
Sat, 3 Oct	77	66	86
Sun, 4 Oct	98.1	86	152
Mon, 5 Oct	138.8	94	154
Tue, 6 Oct	96.5	92	107

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 JOHAN SETIA shows local patterns like traffic peaks and afternoon haze accumulation.

050100150200APIBrighter cells ran hazier than the rest of this week (64 – 179 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 179 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	179	178	178	177	177	176	176	176	175	176	175	174	172	171	169	168	166	165	164	164	163	162	161	161
Thu	160	160	160	160	159	158	158	157	156	155	156	156	157	156	156	155	155	154	153	152	149	137	130	124
Fri	121	111	100	98	96	94	92	90	88	85	82	79	76	74	72	69	66	64	66	69	70	70	70	69
Sat	68	67	66	66	68	70	70	72	73	76	77	76	78	80	80	81	84	86	86	85	84	85	85	86
Sun	86	87	88	88	87	88	88	88	89	89	90	92	94	94	95	96	96	96	97	98	103	123	151	152
Mon	153	153	154	154	154	154	154	154	154	153	153	152	152	152	151	151	144	131	118	106	99	97	95	94
Tue	92	92	93	94	95	96	97	98	98	99	107	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik0%0
ModerateSederhana52%80
UnhealthyTidak Sihat48%75
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 155 hourly station readings.

What it meant for this area

Panduan kesihatan mengikut kategori kualiti udara

Limit prolonged outdoor activity. Children, older adults, pregnant women and people with respiratory or heart conditions should stay indoors where possible. A well-fitted N95 mask helps outdoors.

Hadkan aktiviti luar yang berpanjangan. Kanak-kanak, warga emas, ibu mengandung dan pesakit pernafasan atau jantung dinasihatkan berada di dalam bangunan. Pelitup muka N95 membantu di luar.

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 JOHAN SETIA

Perbandingan purata mingguan dengan stesen berhampiran

Klang100.8 API
Unhealthy9.4 away
Shah Alam106.9 API
Unhealthy16 away
Petaling Jaya95.5 API
Moderate22 away
Banting91.9 API
Moderate23 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	179	178	178	177	177	176	176	176	175	176	175	174	172	171	169	168	166	165	164	164	163	162	161	161
Thu	160	160	160	160	159	158	158	157	156	155	156	156	157	156	156	155	155	154	153	152	149	137	130	124
Fri	121	111	100	98	96	94	92	90	88	85	82	79	76	74	72	69	66	64	66	69	70	70	70	69
Sat	68	67	66	66	68	70	70	72	73	76	77	76	78	80	80	81	84	86	86	85	84	85	85	86
Sun	86	87	88	88	87	88	88	88	89	89	90	92	94	94	95	96	96	96	97	98	103	123	151	152
Mon	153	153	154	154	154	154	154	154	154	153	153	152	152	152	151	151	144	131	118	106	99	97	95	94
Tue	92	92	93	94	95	96	97	98	98	99	107	—	—	—	—	—	—	—	—	—	—	—	—	—

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	179	178	178	177	177	176	176	176	175	176	175	174	172	171	169	168	166	165	164	164	163	162	161	161
Thu	160	160	160	160	159	158	158	157	156	155	156	156	157	156	156	155	155	154	153	152	149	137	130	124
Fri	121	111	100	98	96	94	92	90	88	85	82	79	76	74	72	69	66	64	66	69	70	70	70	69
Sat	68	67	66	66	68	70	70	72	73	76	77	76	78	80	80	81	84	86	86	85	84	85	85	86
Sun	86	87	88	88	87	88	88	88	89	89	90	92	94	94	95	96	96	96	97	98	103	123	151	152
Mon	153	153	154	154	154	154	154	154	154	153	153	152	152	152	151	151	144	131	118	106	99	97	95	94
Tue	92	92	93	94	95	96	97	98	98	99	107	—	—	—	—	—	—	—	—	—	—	—	—	—