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21 – 27 Oct 2026 · Malaysia

Nilai weekly air quality

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

147.1Weekly mean AQI · Unhealthy for Sensitive Groups

Official DOE API mean: 139.9. 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.

-37 AQI compared with the previous week’s eligible mean of 184.1.

Peak AQI: 173 at Nilai · 24 Oct 2026, 07:00 (UTC+8).

Daily US AQI (PM2.5)

Low 80High 173AQI
087.5175
21 Oct27 Oct
27 OctDaily mean · Peak 8484Avg 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.

DayMean AQIPeak AQIEligible / excluded
2026-10-21165.6Unhealthy16724 / 0
2026-10-22166.2Unhealthy16924 / 0
2026-10-23161.5Unhealthy16524 / 0
2026-10-24170Unhealthy17324 / 0
2026-10-25138.5Unhealthy for Sensitive Groups16924 / 0
2026-10-2683.5Moderate8824 / 0
2026-10-2784Moderate841 / 0

Hourly means (UTC+8)

Day01234567891011121314151617181920212223
2026-10-21166166166165166165165165165165166165165166166166165166166165165166166167
2026-10-22167167166166166166166166166167169167167167167166166165166166166165165163
2026-10-23163163163163163163163162160159159160162159158160160162160160162163163165
2026-10-24166166166167167169170173173173173171170171171171171171171171170170170170
2026-10-25169167166163162159156155154152151148150141138134128118115113105999387
2026-10-26868381808180818080818380818486868887868486868786
2026-10-2784———————————————————————

Observation categories

Good: 0

Moderate: 28

Unhealthy for Sensitive Groups: 10

Unhealthy: 107

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
haze

Nilai air quality.
Weekly station review.

7 days · Negeri Sembilan

Laporan mingguan Indeks Pencemaran Udara (IPU) bagi stesen Nilai, Negeri Sembilan

During the week of 21 – 27 Oct 2026, air quality at Nilai averaged an Air Pollutant Index (API) of 139.9 (Unhealthy). Readings peaked at 167.

Station weekly average

139.9API

Unhealthy · Tidak Sihat

Daily averages69.5 – 165.1 APIWed → Tue
Explore the week
Week's peak reading
167UnhealthyPeak during 7-day window
Rank in Negeri Sembilan
#3of 3 stationsState avg: 127.4 API
Good to Moderate air
24%of hourly readings145 readings recorded
National standing
#68of 68 stationsNational avg: 84.4 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 Nilai shows local patterns like traffic peaks and afternoon haze accumulation.

WedWed 00:00 MYT — API 162Wed 01:00 MYT — API 162Wed 02:00 MYT — API 162Wed 03:00 MYT — API 161Wed 04:00 MYT — API 162Wed 05:00 MYT — API 161Wed 06:00 MYT — API 161Wed 07:00 MYT — API 161Wed 08:00 MYT — API 161Wed 09:00 MYT — API 161Wed 10:00 MYT — API 162Wed 11:00 MYT — API 161Wed 12:00 MYT — API 161Wed 13:00 MYT — API 162Wed 14:00 MYT — API 162Wed 15:00 MYT — API 162Wed 16:00 MYT — API 161Wed 17:00 MYT — API 162Wed 18:00 MYT — API 162Wed 19:00 MYT — API 161Wed 20:00 MYT — API 161Wed 21:00 MYT — API 162Wed 22:00 MYT — API 162Wed 23:00 MYT — API 163ThuThu 00:00 MYT — API 163Thu 01:00 MYT — API 163Thu 02:00 MYT — API 162Thu 03:00 MYT — API 162Thu 04:00 MYT — API 162Thu 05:00 MYT — API 162Thu 06:00 MYT — API 162Thu 07:00 MYT — API 162Thu 08:00 MYT — API 162Thu 09:00 MYT — API 163Thu 10:00 MYT — API 164Thu 11:00 MYT — API 163Thu 12:00 MYT — API 163Thu 13:00 MYT — API 163Thu 14:00 MYT — API 163Thu 15:00 MYT — API 162Thu 16:00 MYT — API 162Thu 17:00 MYT — API 161Thu 18:00 MYT — API 162Thu 19:00 MYT — API 162Thu 20:00 MYT — API 162Thu 21:00 MYT — API 161Thu 22:00 MYT — API 161Thu 23:00 MYT — API 160FriFri 00:00 MYT — API 160Fri 01:00 MYT — API 160Fri 02:00 MYT — API 160Fri 03:00 MYT — API 160Fri 04:00 MYT — API 160Fri 05:00 MYT — API 160Fri 06:00 MYT — API 160Fri 07:00 MYT — API 159Fri 08:00 MYT — API 158Fri 09:00 MYT — API 157Fri 10:00 MYT — API 157Fri 11:00 MYT — API 158Fri 12:00 MYT — API 159Fri 13:00 MYT — API 157Fri 14:00 MYT — API 156Fri 15:00 MYT — API 158Fri 16:00 MYT — API 158Fri 17:00 MYT — API 159Fri 18:00 MYT — API 158Fri 19:00 MYT — API 158Fri 20:00 MYT — API 159Fri 21:00 MYT — API 160Fri 22:00 MYT — API 160Fri 23:00 MYT — API 161SatSat 00:00 MYT — API 162Sat 01:00 MYT — API 162Sat 02:00 MYT — API 162Sat 03:00 MYT — API 163Sat 04:00 MYT — API 163Sat 05:00 MYT — API 164Sat 06:00 MYT — API 165Sat 07:00 MYT — API 167Sat 08:00 MYT — API 167Sat 09:00 MYT — API 167Sat 10:00 MYT — API 167Sat 11:00 MYT — API 166Sat 12:00 MYT — API 165Sat 13:00 MYT — API 166Sat 14:00 MYT — API 166Sat 15:00 MYT — API 166Sat 16:00 MYT — API 166Sat 17:00 MYT — API 166Sat 18:00 MYT — API 166Sat 19:00 MYT — API 166Sat 20:00 MYT — API 165Sat 21:00 MYT — API 165Sat 22:00 MYT — API 165Sat 23:00 MYT — API 165SunSun 00:00 MYT — API 164Sun 01:00 MYT — API 163Sun 02:00 MYT — API 162Sun 03:00 MYT — API 160Sun 04:00 MYT — API 159Sun 05:00 MYT — API 157Sun 06:00 MYT — API 155Sun 07:00 MYT — API 154Sun 08:00 MYT — API 153Sun 09:00 MYT — API 152Sun 10:00 MYT — API 151Sun 11:00 MYT — API 142Sun 12:00 MYT — API 149Sun 13:00 MYT — API 112Sun 14:00 MYT — API 100Sun 15:00 MYT — API 98Sun 16:00 MYT — API 95Sun 17:00 MYT — API 90Sun 18:00 MYT — API 88Sun 19:00 MYT — API 87Sun 20:00 MYT — API 83Sun 21:00 MYT — API 80Sun 22:00 MYT — API 76Sun 23:00 MYT — API 72MonMon 00:00 MYT — API 71Mon 01:00 MYT — API 69Mon 02:00 MYT — API 68Mon 03:00 MYT — API 67Mon 04:00 MYT — API 68Mon 05:00 MYT — API 67Mon 06:00 MYT — API 68Mon 07:00 MYT — API 67Mon 08:00 MYT — API 67Mon 09:00 MYT — API 68Mon 10:00 MYT — API 69Mon 11:00 MYT — API 67Mon 12:00 MYT — API 68Mon 13:00 MYT — API 70Mon 14:00 MYT — API 71Mon 15:00 MYT — API 71Mon 16:00 MYT — API 73Mon 17:00 MYT — API 72Mon 18:00 MYT — API 71Mon 19:00 MYT — API 70Mon 20:00 MYT — API 71Mon 21:00 MYT — API 71Mon 22:00 MYT — API 72Mon 23:00 MYT — API 71TueTue 00:00 MYT — API 70Tue 01:00 — no readingTue 02:00 — no readingTue 03:00 — no readingTue 04:00 — no readingTue 05:00 — no readingTue 06:00 — no readingTue 07:00 — no readingTue 08:00 — no readingTue 09:00 — no readingTue 10:00 — no readingTue 11:00 — no readingTue 12:00 — no readingTue 13:00 — no readingTue 14:00 — no readingTue 15:00 — no readingTue 16:00 — no readingTue 17:00 — no readingTue 18:00 — no readingTue 19:00 — no readingTue 20:00 — no readingTue 21:00 — no readingTue 22:00 — no readingTue 23:00 — no reading0003060912151821
050100150200APIBrighter cells ran hazier than the rest of this week (67 – 167 API)

Haziest hour of the week: Sat at 07:00 MYT, averaging API 167 nationwide.

View the hourly figures as a table
National average API by hour, Malaysia Time
Day000102030405060708091011121314151617181920212223
Wed162162162161162161161161161161162161161162162162161162162161161162162163
Thu163163162162162162162162162163164163163163163162162161162162162161161160
Fri160160160160160160160159158157157158159157156158158159158158159160160161
Sat162162162163163164165167167167167166165166166166166166166166165165165165
Sun164163162160159157155154153152151142149112100989590888783807672
Mon716968676867686767686967687071717372717071717271
Tue70———————————————————————

How the readings split

Pecahan bacaan mengikut kategori IPU

Moderate: 24% (35 readings)Unhealthy: 76% (110 readings)76%Unhealthy
  • GoodBaik0%0
  • ModerateSederhana24%35
  • UnhealthyTidak Sihat76%110
  • 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
APICategoryKategori
0–50GoodBaik
51–100ModerateSederhana
101–200UnhealthyTidak Sihat
201–300Very UnhealthySangat Tidak Sihat
301+HazardousBerbahaya

Nearby monitoring stations around Nilai

Perbandingan purata mingguan dengan stesen berhampiran