SmogRank / World / Asia / Thailand / Surin

Most polluted cities in Surin, Thailand

1 measured city, this year; 1 above the WHO annual guideline. Worst: Surin at 19.1 µg/m³, #501 in the world.

Khon Kaen: 1 measured cityMaha Sarakham: 1 measured cityRoi Et: 1 measured cityNakhon Ratchasima: 1 measured cityBuriram: 1 measured citySurin: 1 measured citySi Sa Ket: 1 measured cityYasothon: 1 measured city#1 Surin: 19.1 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
  1. 1Surin 19.13.8×
Good0–5
Fair6–15
Moderate16–50
Poor51–90
Very poor91–140
Extremely poor141+

The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

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SmogRank, most polluted cities in Surin, Thailand, PM2.5, this year to 2 Oct 2026, 05:00 UTC, smogrank.com/th/region/surin?w=year.

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Updated 2026-10-02 05:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors in µg/m³.