SmogRank / Malaysia / Kuala Lumpur

Air quality in Kuala Lumpur

Kuala Lumpur, Malaysia. PM2.5 from 3 low-cost sensors, updated hourly.

53.6µg/m³
Unhealthy for sensitive groups

Latest hour (23:00 UTC), 3.6× the WHO 24-hour guideline. 24-hour average 55.3 µg/m³.

Rank among 1,324 cities

24 hours#10of 1,324, at 55.3 µg/m³
7 days#17of 2,298, at 54.8 µg/m³
30 days#3of 2,311, at 69.8 µg/m³
This year–not enough data

Why it ranks here

Worse than usual today. The last 24 hours averaged 55.3 µg/m³, about 2.9× its usual for this time of year (19.4). A jump like this usually has a short-lived cause: likely smoke from fires, dust, or still weather trapping local emissions.

Based on Kuala Lumpur's own measurements; causes are the usual kinds for a pattern like this, not a confirmed source.

The last 12 months, day by day

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data2026-05-26: no data2026-05-27: no data2026-05-28: no data2026-05-29: no data2026-05-30: no data2026-05-31: no data2026-06-01: no data2026-06-02: no data2026-06-03: no data2026-06-04: no data2026-06-05: no data2026-06-06: no data2026-06-07: no data2026-06-08: no data2026-06-09: no data2026-06-10: no data2026-06-11: no data2026-06-12: no data2026-06-13: no data2026-06-14: no data2026-06-15: no data2026-06-16: no data2026-06-17: no data2026-06-18: no data2026-06-19: no data2026-06-20: no data2026-06-21: no data2026-06-22: no data2026-06-23: no data2026-06-24: no data2026-06-25: no data2026-06-26: no data2026-06-27: no data2026-06-28: no data2026-06-29: no data2026-06-30: no data2026-07-01: no data2026-07-02: no data2026-07-03: no data2026-07-04: no data2026-07-05: no data2026-07-06: no data2026-07-07: no data2026-07-08: no data2026-07-09: no data2026-07-10: no data2026-07-11: no data2026-07-12: no data2026-07-13: no data2026-07-14: no data2026-07-15: no data2026-07-16: no data2026-07-17: no data2026-07-18: no data2026-07-19: no data2026-07-20: no data2026-07-21: no data2026-07-22: no data2026-07-23: no data2026-07-24: no data2026-07-25: no data2026-07-26: no data2026-07-27: no data2026-07-28: no data2026-07-29: no data2026-07-30: no data2026-07-31: no data2026-08-01: no data2026-08-02: no data2026-08-03: no data2026-08-04: no data2026-08-05: no data2026-08-06: no data2026-08-07: no data2026-08-08: no data2026-08-09: no data2026-08-10: no data2026-08-11: no data2026-08-12: no data2026-08-13: no data2026-08-14: no data2026-08-15: 23.2 µg/m³2026-08-16: 41.6 µg/m³2026-08-17: 35.7 µg/m³2026-08-18: 40.8 µg/m³2026-08-19: 31.8 µg/m³2026-08-20: 11.0 µg/m³2026-08-21: 41.6 µg/m³2026-08-22: 51.8 µg/m³2026-08-23: 57.7 µg/m³2026-08-24: 80.2 µg/m³2026-08-25: 82.2 µg/m³2026-08-26: 76.5 µg/m³2026-08-27: 78.6 µg/m³2026-08-28: 78.5 µg/m³2026-08-29: 88.9 µg/m³2026-08-30: 41.1 µg/m³2026-08-31: 34.4 µg/m³2026-09-01: 46.6 µg/m³2026-09-02: 65.4 µg/m³2026-09-03: 57.1 µg/m³2026-09-04: 37.3 µg/m³2026-09-05: 79.6 µg/m³2026-09-06: 112.0 µg/m³2026-09-07: 91.2 µg/m³2026-09-08: 94.7 µg/m³2026-09-09: 78.7 µg/m³2026-09-10: 47.7 µg/m³2026-09-11: 36.7 µg/m³2026-09-12: 40.7 µg/m³2026-09-13: 54.2 µg/m³2026-09-14: 93.1 µg/m³2026-09-15: 132.0 µg/m³2026-09-16: 102.0 µg/m³2026-09-17: 98.1 µg/m³2026-09-18: 120.0 µg/m³2026-09-19: 74.6 µg/m³2026-09-20: 79.1 µg/m³2026-09-21: 69.8 µg/m³2026-09-22: 44.4 µg/m³2026-09-23: 42.0 µg/m³2026-09-24: 44.2 µg/m³2026-09-25: 36.8 µg/m³2026-09-26: 31.9 µg/m³2026-09-27: 30.4 µg/m³2026-09-28: 55.3 µg/m³2026-09-29: 95.5 µg/m³2026-09-30: 79.0 µg/m³2026-10-01: no data
46 of 47 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Last 4 days, hour by hour

15702026-10-01 00:00 UTC: 50.1 µg/m³2026-10-01 01:00 UTC: 49.9 µg/m³2026-10-01 02:00 UTC: 49.2 µg/m³2026-10-01 03:00 UTC: 51.9 µg/m³2026-10-01 04:00 UTC: 61.7 µg/m³2026-10-01 05:00 UTC: 53.5 µg/m³2026-10-01 06:00 UTC: 52.0 µg/m³2026-10-01 07:00 UTC: 51.0 µg/m³2026-10-01 08:00 UTC: 40.4 µg/m³2026-10-01 09:00 UTC: 70.0 µg/m³2026-10-01 10:00 UTC: 43.8 µg/m³2026-10-01 12:00 UTC: 61.0 µg/m³2026-10-01 13:00 UTC: 63.3 µg/m³2026-10-01 14:00 UTC: 55.9 µg/m³2026-10-01 15:00 UTC: 61.3 µg/m³2026-10-01 16:00 UTC: 59.9 µg/m³2026-10-01 17:00 UTC: 52.7 µg/m³2026-10-01 18:00 UTC: 53.5 µg/m³2026-10-01 19:00 UTC: 55.1 µg/m³2026-10-01 20:00 UTC: 60.1 µg/m³2026-10-01 21:00 UTC: 60.8 µg/m³2026-10-01 22:00 UTC: 56.1 µg/m³2026-10-01 23:00 UTC: 53.6 µg/m³Sep 29Sep 30Oct 1
Times in UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Its world rank, day by day

#1#579Sep
Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15JanFebMarAprMayJunJulAug 2026: 52.7 µg/m³AugSep 2026: 69.0 µg/m³SepOctNovDec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 54.8 µg/m³54.82024no data20232023: 25.9 µg/m³25.9
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
Taman Tun Dr. IsmailCC BY 4.0Aizat FaizLow-cost
Mont KiaraCC BY 4.0AirGradientLow-cost
KLCCCC BY 4.0AirGradientLow-cost

No reference monitor here, so the value is the median of low-cost sensors, when at least a third of them report (two at the least, three always enough). Low-cost sensors can read high in humid air. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Use this page

SmogRank, PM2.5 daily means, Kuala Lumpur, Malaysia, 15 Aug 2026 – 1 Oct 2026, smogrank.com/my/kuala-lumpur (accessed 2 Oct 2026).

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Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.