SmogRank / Kuala Lumpur / Betong
Kuala Lumpur vs Betong: PM2.5 compared
Over the last year, Kuala Lumpur's air was about 4.7× as polluted as Betong's: PM2.5 averaged 66.9 µg/m³ against 14.3, on the 46 days both cities were measured. Kuala Lumpur had the dirtier air on 46 of those days, Betong on 0. Kuala Lumpur was over the WHO's daily guideline of 15 µg/m³ on 45 of them, Betong on 17.
Right now
The last year, day by day
Month by month
Year by year
| Year | Kuala Lumpur | Betong | Days Kuala Lumpur was worse |
|---|---|---|---|
| 2026 so far | 159 | 61 | 46 |
| 2024 | 55 | 60 | 23 |
| 2023 | 53 | 62 | 6 |
Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.
Each city's worst days
Kuala Lumpur
- 7 Oct 2026215140.0 µg/m³
- 8 Oct 2026214138.5 µg/m³
- 15 Sept 2026207132.0 µg/m³
Betong
- 9 Oct 202611340.3 µg/m³
- 17 Sept 20269934.8 µg/m³
- 8 Oct 20269130.8 µg/m³
Daily means in US AQI, with µg/m³ beside them, since the index stops at its top value, over the days both cities were measured in the last year. Each date opens that day's world board.
Compare either city with another
Kuala Lumpur
Side by side with Gujranwala (the world's worst on 30 days).
Betong
Side by side with Yala, Thailand (the nearest), Ban Chang (Thailand's worst on 30 days), Gujranwala (the world's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Kuala Lumpur and Betong, 13 Oct 2025 – 12 Oct 2026, smogrank.com/compare/my-kuala-lumpur/th-betong (accessed 13 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.
Updated 2026-10-13 00:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.