SmogRank / World / Thailand / July 2023

Most polluted cities in Thailand, July 2023

1 city in Thailand ranked by their average PM2.5 over the 31 days. Worst: Tha Bo at 14.5 µg/m³, #89 of 1,103 cities in the world. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for one of these days. Cities in the United States and Europe have it from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.

  1. 1Tha BoNong Khai
    61
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, July 2023 · Thailand now

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SmogRank, most polluted cities in Thailand, PM2.5, July 2023, smogrank.com/th/history/2023-07 (accessed 2 Oct 2026).

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