SmogRank / World / Asia / Thailand / Nakhon Ratchasima
Most polluted cities in Nakhon Ratchasima, Thailand
1 measured city, this year; 1 above the WHO annual guideline. Worst: Nakhon Ratchasima at 23.2 µg/m³, #417 in the world.
- 1Nakhon Ratchasima 24.6×
The UK's Daily Air Quality Index (1 to 10), PM2.5 bands. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Estimated: cities without a monitor
Nakhon Ratchasima cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Pak Chong | ≈ 4 µg/m³ |
| Amphoe Sikhiu | ≈ 4 µg/m³ |
| Chok Chai | ≈ 4 µg/m³ |
| Khon Buri | ≈ 3 µg/m³ |
| Non Sung | ≈ 4 µg/m³ |
| Bua Yai | ≈ 4 µg/m³ |
| Dan Khun Thot | ≈ 5 µg/m³ |
| Ban Huai Thalaeng | ≈ 4 µg/m³ |
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SmogRank, most polluted cities in Nakhon Ratchasima, Thailand, PM2.5, this year to 2 Oct 2026, 07:00 UTC, smogrank.com/th/region/nakhon-ratchasima?w=year.
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Updated 2026-10-02 07:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the UK DAQI PM2.5 sub-index.