21 – 27 Oct 2026 · Malaysia

JOHAN SETIA weekly air quality

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

128.3Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 116.8. 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

145 eligible observations · 0 excluded.

-55.3 AQI compared with the previous week’s eligible mean of 183.6.

Peak AQI: 173 at JOHAN SETIA · 21 Oct 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 51High 173AQI

21 Oct27 Oct

27 OctDaily mean · Peak 7070Avg AQI

Based on 1 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	164.3Unhealthy	173	24 / 0
2026-10-22	157.4Unhealthy	163	24 / 0
2026-10-23	160.1Unhealthy	166	24 / 0
2026-10-24	133.3Unhealthy for Sensitive Groups	148	24 / 0
2026-10-25	102Unhealthy for Sensitive Groups	132	24 / 0
2026-10-26	55.3Moderate	67	24 / 0
2026-10-27	70Moderate	70	1 / 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	173	171	170	169	167	166	166	165	163	162	163	163	165	163	163	163	163	162	162	162	162	162	160	159
2026-10-22	159	159	158	158	158	158	156	156	156	156	155	155	155	155	156	156	156	156	158	158	159	160	162	163
2026-10-23	163	165	165	166	166	166	166	166	165	163	162	162	160	160	159	159	159	158	155	154	152	152	151	149
2026-10-24	148	146	143	142	141	140	138	138	136	134	134	134	136	132	128	124	118	120	124	126	130	128	128	130
2026-10-25	132	132	128	128	122	118	117	113	111	111	109	105	101	99	96	94	93	88	86	83	77	74	68	62
2026-10-26	58	55	55	55	55	55	53	54	53	52	52	52	51	51	53	53	55	54	55	57	58	61	62	67
2026-10-27	70	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 36

Unhealthy for Sensitive Groups: 38

Unhealthy: 71

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.

21 – 27 Oct 20267 days · Selangor

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

During the week of 21 – 27 Oct 2026, air quality at JOHAN SETIA averaged an Air Pollutant Index (API) of 116.8 (Unhealthy). Readings peaked at 167.

Station weekly average

116.8API

Unhealthy · Tidak Sihat

Daily averages46.3 – 160.8 APIWed → Tue

Explore the week

Week's peak reading: 167UnhealthyPeak during 7-day window
Rank in Selangor: #5of 6 stationsState avg: 106 API
Good to Moderate air: 46%of hourly readings145 readings recorded
National standing: #58of 68 stationsNational avg: 84.4 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, 21 Oct	160.8	157	167
Thu, 22 Oct	155.8	154	160
Fri, 23 Oct	157.5	144	162
Sat, 24 Oct	102.6	90	140
Sun, 25 Oct	80.4	55	97
Mon, 26 Oct	46.3	39	58
Tue, 27 Oct	60	60	60

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 (39 – 167 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 167 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	167	166	165	164	163	162	162	161	160	159	160	160	161	160	160	160	160	159	159	159	159	159	158	157
Thu	157	157	156	156	156	156	155	155	155	155	154	154	154	154	155	155	155	155	156	156	157	158	159	160
Fri	160	161	161	162	162	162	162	162	161	160	159	159	158	158	157	157	157	156	154	153	152	152	151	144
Sat	140	132	123	116	115	109	100	100	99	98	98	98	99	97	95	93	90	91	93	94	96	95	95	96
Sun	97	97	95	95	92	90	89	87	86	86	85	83	81	80	78	77	76	73	71	69	65	63	59	55
Mon	52	47	48	47	48	46	43	45	43	41	40	40	39	39	43	42	46	45	47	51	52	54	55	58
Tue	60	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik12%18
ModerateSederhana34%49
UnhealthyTidak Sihat54%78
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 145 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

Klang117.3 API
Unhealthy9.4 away
Shah Alam109.6 API
Unhealthy16 away
Petaling Jaya114.2 API
Unhealthy22 away
Banting108.6 API
Unhealthy23 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	167	166	165	164	163	162	162	161	160	159	160	160	161	160	160	160	160	159	159	159	159	159	158	157
Thu	157	157	156	156	156	156	155	155	155	155	154	154	154	154	155	155	155	155	156	156	157	158	159	160
Fri	160	161	161	162	162	162	162	162	161	160	159	159	158	158	157	157	157	156	154	153	152	152	151	144
Sat	140	132	123	116	115	109	100	100	99	98	98	98	99	97	95	93	90	91	93	94	96	95	95	96
Sun	97	97	95	95	92	90	89	87	86	86	85	83	81	80	78	77	76	73	71	69	65	63	59	55
Mon	52	47	48	47	48	46	43	45	43	41	40	40	39	39	43	42	46	45	47	51	52	54	55	58
Tue	60	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	167	166	165	164	163	162	162	161	160	159	160	160	161	160	160	160	160	159	159	159	159	159	158	157
Thu	157	157	156	156	156	156	155	155	155	155	154	154	154	154	155	155	155	155	156	156	157	158	159	160
Fri	160	161	161	162	162	162	162	162	161	160	159	159	158	158	157	157	157	156	154	153	152	152	151	144
Sat	140	132	123	116	115	109	100	100	99	98	98	98	99	97	95	93	90	91	93	94	96	95	95	96
Sun	97	97	95	95	92	90	89	87	86	86	85	83	81	80	78	77	76	73	71	69	65	63	59	55
Mon	52	47	48	47	48	46	43	45	43	41	40	40	39	39	43	42	46	45	47	51	52	54	55	58
Tue	60	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—