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14 – 20 Oct 2026 · Malaysia

Petaling Jaya weekly air quality

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

168Weekly mean AQI · Unhealthy

Official DOE API mean: 162.8. 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

168 eligible observations · 0 excluded.

+29.1 AQI compared with the previous week’s eligible mean of 138.9.

Peak AQI: 182 at Petaling Jaya · 15 Oct 2026, 01:00 (UTC+8).

Daily US AQI (PM2.5)

Low 136High 182AQI
0100200
14 Oct20 Oct
20 OctDaily mean · Peak 177170.4Avg AQI

Based on 24 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.

DayMean AQIPeak AQIEligible / excluded
2026-10-14157Unhealthy17924 / 0
2026-10-15175.8Unhealthy18224 / 0
2026-10-16175.7Unhealthy18224 / 0
2026-10-17173.5Unhealthy17724 / 0
2026-10-18160.9Unhealthy17024 / 0
2026-10-19162.9Unhealthy16624 / 0
2026-10-20170.4Unhealthy17724 / 0

Hourly means (UTC+8)

Day01234567891011121314151617181920212223
2026-10-14136139141144147151152154155155156156158158158159160162163166169173177179
2026-10-15181182181181179178177177175174173174174175175174175175177177175173170167
2026-10-16166167169170171174175177178181181182182182182182181178175173171173174173
2026-10-17173171171171171173173174175175175175175177177177177175174173171170170170
2026-10-18170170169167166165163160159159158158158156156155155156158159160160162162
2026-10-19163165165166166166165163163163163162162160159159160162163163163163163163
2026-10-20163163163165165166169170171173174174175175177177175175173171170169169167

Observation categories

Good: 0

Moderate: 0

Unhealthy for Sensitive Groups: 5

Unhealthy: 163

Very Unhealthy: 0

Hazardous: 0

US AQI scale
AQICategory
0–50Good
51–100Moderate
101–150Unhealthy for Sensitive Groups
151–200Unhealthy
201–300Very Unhealthy
301+Hazardous
View the official DOE API report
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Petaling Jaya air quality.
Weekly station review.

7 days · Selangor

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Petaling Jaya, Selangor

During the week of 14 – 20 Oct 2026, air quality at Petaling Jaya averaged an Air Pollutant Index (API) of 162.8 (Unhealthy). Readings peaked at 174.

Station weekly average

162.8API

Unhealthy · Tidak Sihat

Daily averages149.7 – 169.3 APIWed → Tue
Explore the week
Week's peak reading
174UnhealthyPeak during 7-day window
Rank in Selangor
#3of 6 stationsState avg: 157.2 API
Good to Moderate air
1%of hourly readings168 readings recorded
National standing
#53of 68 stationsNational avg: 108.7 API

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 Petaling Jaya shows local patterns like traffic peaks and afternoon haze accumulation.

WedWed 00:00 MYT — API 99Wed 01:00 MYT — API 107Wed 02:00 MYT — API 113Wed 03:00 MYT — API 125Wed 04:00 MYT — API 138Wed 05:00 MYT — API 151Wed 06:00 MYT — API 152Wed 07:00 MYT — API 153Wed 08:00 MYT — API 154Wed 09:00 MYT — API 154Wed 10:00 MYT — API 155Wed 11:00 MYT — API 155Wed 12:00 MYT — API 156Wed 13:00 MYT — API 156Wed 14:00 MYT — API 156Wed 15:00 MYT — API 157Wed 16:00 MYT — API 158Wed 17:00 MYT — API 159Wed 18:00 MYT — API 160Wed 19:00 MYT — API 162Wed 20:00 MYT — API 164Wed 21:00 MYT — API 167Wed 22:00 MYT — API 170Wed 23:00 MYT — API 172ThuThu 00:00 MYT — API 173Thu 01:00 MYT — API 174Thu 02:00 MYT — API 173Thu 03:00 MYT — API 173Thu 04:00 MYT — API 172Thu 05:00 MYT — API 171Thu 06:00 MYT — API 170Thu 07:00 MYT — API 170Thu 08:00 MYT — API 169Thu 09:00 MYT — API 168Thu 10:00 MYT — API 167Thu 11:00 MYT — API 168Thu 12:00 MYT — API 168Thu 13:00 MYT — API 169Thu 14:00 MYT — API 169Thu 15:00 MYT — API 168Thu 16:00 MYT — API 169Thu 17:00 MYT — API 169Thu 18:00 MYT — API 170Thu 19:00 MYT — API 170Thu 20:00 MYT — API 169Thu 21:00 MYT — API 167Thu 22:00 MYT — API 165Thu 23:00 MYT — API 163FriFri 00:00 MYT — API 162Fri 01:00 MYT — API 163Fri 02:00 MYT — API 164Fri 03:00 MYT — API 165Fri 04:00 MYT — API 166Fri 05:00 MYT — API 168Fri 06:00 MYT — API 169Fri 07:00 MYT — API 170Fri 08:00 MYT — API 171Fri 09:00 MYT — API 173Fri 10:00 MYT — API 173Fri 11:00 MYT — API 174Fri 12:00 MYT — API 174Fri 13:00 MYT — API 174Fri 14:00 MYT — API 174Fri 15:00 MYT — API 174Fri 16:00 MYT — API 173Fri 17:00 MYT — API 171Fri 18:00 MYT — API 169Fri 19:00 MYT — API 167Fri 20:00 MYT — API 166Fri 21:00 MYT — API 167Fri 22:00 MYT — API 168Fri 23:00 MYT — API 167SatSat 00:00 MYT — API 167Sat 01:00 MYT — API 166Sat 02:00 MYT — API 166Sat 03:00 MYT — API 166Sat 04:00 MYT — API 166Sat 05:00 MYT — API 167Sat 06:00 MYT — API 167Sat 07:00 MYT — API 168Sat 08:00 MYT — API 169Sat 09:00 MYT — API 169Sat 10:00 MYT — API 169Sat 11:00 MYT — API 169Sat 12:00 MYT — API 169Sat 13:00 MYT — API 170Sat 14:00 MYT — API 170Sat 15:00 MYT — API 170Sat 16:00 MYT — API 170Sat 17:00 MYT — API 169Sat 18:00 MYT — API 168Sat 19:00 MYT — API 167Sat 20:00 MYT — API 166Sat 21:00 MYT — API 165Sat 22:00 MYT — API 165Sat 23:00 MYT — API 165SunSun 00:00 MYT — API 165Sun 01:00 MYT — API 165Sun 02:00 MYT — API 164Sun 03:00 MYT — API 163Sun 04:00 MYT — API 162Sun 05:00 MYT — API 161Sun 06:00 MYT — API 160Sun 07:00 MYT — API 158Sun 08:00 MYT — API 157Sun 09:00 MYT — API 157Sun 10:00 MYT — API 156Sun 11:00 MYT — API 156Sun 12:00 MYT — API 156Sun 13:00 MYT — API 155Sun 14:00 MYT — API 155Sun 15:00 MYT — API 154Sun 16:00 MYT — API 154Sun 17:00 MYT — API 155Sun 18:00 MYT — API 156Sun 19:00 MYT — API 157Sun 20:00 MYT — API 158Sun 21:00 MYT — API 158Sun 22:00 MYT — API 159Sun 23:00 MYT — API 159MonMon 00:00 MYT — API 160Mon 01:00 MYT — API 161Mon 02:00 MYT — API 161Mon 03:00 MYT — API 162Mon 04:00 MYT — API 162Mon 05:00 MYT — API 162Mon 06:00 MYT — API 161Mon 07:00 MYT — API 160Mon 08:00 MYT — API 160Mon 09:00 MYT — API 160Mon 10:00 MYT — API 160Mon 11:00 MYT — API 159Mon 12:00 MYT — API 159Mon 13:00 MYT — API 158Mon 14:00 MYT — API 157Mon 15:00 MYT — API 157Mon 16:00 MYT — API 158Mon 17:00 MYT — API 159Mon 18:00 MYT — API 160Mon 19:00 MYT — API 160Mon 20:00 MYT — API 160Mon 21:00 MYT — API 160Mon 22:00 MYT — API 160Mon 23:00 MYT — API 160TueTue 00:00 MYT — API 160Tue 01:00 MYT — API 160Tue 02:00 MYT — API 160Tue 03:00 MYT — API 161Tue 04:00 MYT — API 161Tue 05:00 MYT — API 162Tue 06:00 MYT — API 164Tue 07:00 MYT — API 165Tue 08:00 MYT — API 166Tue 09:00 MYT — API 167Tue 10:00 MYT — API 168Tue 11:00 MYT — API 168Tue 12:00 MYT — API 169Tue 13:00 MYT — API 169Tue 14:00 MYT — API 170Tue 15:00 MYT — API 170Tue 16:00 MYT — API 169Tue 17:00 MYT — API 169Tue 18:00 MYT — API 167Tue 19:00 MYT — API 166Tue 20:00 MYT — API 165Tue 21:00 MYT — API 164Tue 22:00 MYT — API 164Tue 23:00 MYT — API 1630003060912151821
050100150200APIBrighter cells ran hazier than the rest of this week (99 – 174 API)

Haziest hour of the week: Thu at 01:00 MYT, averaging API 174 nationwide.

View the hourly figures as a table
National average API by hour, Malaysia Time
Day000102030405060708091011121314151617181920212223
Wed99107113125138151152153154154155155156156156157158159160162164167170172
Thu173174173173172171170170169168167168168169169168169169170170169167165163
Fri162163164165166168169170171173173174174174174174173171169167166167168167
Sat167166166166166167167168169169169169169170170170170169168167166165165165
Sun165165164163162161160158157157156156156155155154154155156157158158159159
Mon160161161162162162161160160160160159159158157157158159160160160160160160
Tue160160160161161162164165166167168168169169170170169169167166165164164163

How the readings split

Pecahan bacaan mengikut kategori IPU

Moderate: 1% (1 readings)Unhealthy: 99% (167 readings)99%Unhealthy
  • GoodBaik0%0
  • ModerateSederhana1%1
  • UnhealthyTidak Sihat99%167
  • Very UnhealthySangat Tidak Sihat0%0
  • HazardousBerbahaya0%0

Based on 168 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
APICategoryKategori
0–50GoodBaik
51–100ModerateSederhana
101–200UnhealthyTidak Sihat
201–300Very UnhealthySangat Tidak Sihat
301+HazardousBerbahaya

Nearby monitoring stations around Petaling Jaya

Perbandingan purata mingguan dengan stesen berhampiran