21 – 27 Oct 2026 · Malaysia

Putrajaya weekly air quality

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

125.5Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 113.3. 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

146 eligible observations · 3 excluded.

-43.4 AQI compared with the previous week’s eligible mean of 168.9.

Peak AQI: 165 at Putrajaya · 21 Oct 2026, 00:00 (UTC+8).

Daily US AQI (PM2.5)

Low 51High 165AQI

21 Oct27 Oct

27 OctDaily mean · Peak 5857.4Avg AQI

Based on 5 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	159.7Unhealthy	165	24 / 0
2026-10-22	150.6Unhealthy	155	24 / 0
2026-10-23	146.9Unhealthy for Sensitive Groups	155	24 / 0
2026-10-24	144.9Unhealthy for Sensitive Groups	151	24 / 0
2026-10-25	103Unhealthy for Sensitive Groups	144	24 / 0
2026-10-26	53.2Moderate	58	21 / 3
2026-10-27	57.4Moderate	58	5 / 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	165	165	165	163	163	162	162	160	160	160	160	160	159	159	158	158	156	156	156	158	158	158	156	156
2026-10-22	155	154	154	152	152	151	149	148	148	148	148	148	148	149	151	151	151	151	152	151	151	151	151	151
2026-10-23	152	152	154	154	155	155	155	154	152	152	151	148	147	145	144	142	140	141	139	139	138	138	139	140
2026-10-24	142	143	142	142	140	141	145	151	151	151	151	151	151	149	147	144	142	140	140	140	142	143	144	145
2026-10-25	144	143	140	136	132	126	120	115	111	109	105	105	101	97	94	93	88	84	81	78	74	70	65	61
2026-10-26	58	53	52	53	53	53	52	52	52	51	52	52	53	53	53	53	54	54	—	—	—	55	55	55
2026-10-27	56	57	58	58	58	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Observation categories

Good: 0

Moderate: 37

Unhealthy for Sensitive Groups: 52

Unhealthy: 57

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

Putrajaya air quality.
Weekly station review.

21 – 27 Oct 20267 days · Putrajaya

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Putrajaya, Putrajaya

During the week of 21 – 27 Oct 2026, air quality at Putrajaya averaged an Air Pollutant Index (API) of 113.3 (Unhealthy). Readings peaked at 161.

Station weekly average

113.3API

Unhealthy · Tidak Sihat

Daily averages43.5 – 157.5 APIWed → Tue

Explore the week

Week's peak reading: 161UnhealthyPeak during 7-day window
Rank in Putrajaya: #1of 1 stationsState avg: 113.3 API
Good to Moderate air: 35%of hourly readings149 readings recorded
National standing: #54of 68 stationsNational avg: 83.6 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 · 0–175 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, 21 Oct	157.5	155	161
Thu, 22 Oct	148.3	140	154
Fri, 23 Oct	132.5	100	154
Sat, 24 Oct	128.6	109	151
Sun, 25 Oct	82.7	54	124
Mon, 26 Oct	43.5	39	52
Tue, 27 Oct	51.2	49	52

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 Putrajaya shows local patterns like traffic peaks and afternoon haze accumulation.

0255075100125150175APIBrighter cells ran hazier than the rest of this week (39 – 161 API)

Haziest hour of the week: Wed at 00:00 MYT, averaging API 161 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	161	161	161	160	160	159	159	158	158	158	158	158	157	157	156	156	155	155	155	156	156	156	155	155
Thu	154	153	153	152	152	151	144	142	141	140	140	140	140	145	151	151	151	151	152	151	151	151	151	151
Fri	152	152	153	153	154	154	154	153	152	152	151	142	137	130	125	116	111	112	106	105	100	100	106	110
Sat	117	121	119	117	111	114	130	151	151	151	151	151	151	146	138	127	118	111	109	110	116	121	127	128
Sun	124	121	109	99	97	94	91	88	86	85	83	83	81	79	77	76	73	70	68	66	63	60	57	54
Mon	52	43	41	42	42	42	41	40	40	39	40	40	42	42	43	43	44	45	46	47	47	47	47	48
Tue	49	51	52	52	52	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

How the readings split

Pecahan bacaan mengikut kategori IPU

GoodBaik16%24
ModerateSederhana19%28
UnhealthyTidak Sihat65%97
Very UnhealthySangat Tidak Sihat0%0
HazardousBerbahaya0%0

Based on 149 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 Putrajaya

Perbandingan purata mingguan dengan stesen berhampiran

Banting106.8 API
Unhealthy13 away
Nilai138 API
Unhealthy17 away
Cheras107.5 API
Unhealthy21 away
Johan Setia115.4 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	161	161	161	160	160	159	159	158	158	158	158	158	157	157	156	156	155	155	155	156	156	156	155	155
Thu	154	153	153	152	152	151	144	142	141	140	140	140	140	145	151	151	151	151	152	151	151	151	151	151
Fri	152	152	153	153	154	154	154	153	152	152	151	142	137	130	125	116	111	112	106	105	100	100	106	110
Sat	117	121	119	117	111	114	130	151	151	151	151	151	151	146	138	127	118	111	109	110	116	121	127	128
Sun	124	121	109	99	97	94	91	88	86	85	83	83	81	79	77	76	73	70	68	66	63	60	57	54
Mon	52	43	41	42	42	42	41	40	40	39	40	40	42	42	43	43	44	45	46	47	47	47	47	48
Tue	49	51	52	52	52	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

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	161	161	161	160	160	159	159	158	158	158	158	158	157	157	156	156	155	155	155	156	156	156	155	155
Thu	154	153	153	152	152	151	144	142	141	140	140	140	140	145	151	151	151	151	152	151	151	151	151	151
Fri	152	152	153	153	154	154	154	153	152	152	151	142	137	130	125	116	111	112	106	105	100	100	106	110
Sat	117	121	119	117	111	114	130	151	151	151	151	151	151	146	138	127	118	111	109	110	116	121	127	128
Sun	124	121	109	99	97	94	91	88	86	85	83	83	81	79	77	76	73	70	68	66	63	60	57	54
Mon	52	43	41	42	42	42	41	40	40	39	40	40	42	42	43	43	44	45	46	47	47	47	47	48
Tue	49	51	52	52	52	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—