SmogRank / World / Asia / Thailand / Samut Prakan

Most polluted cities in Samut Prakan, Thailand

3 measured cities, this year; 3 above the WHO annual guideline. Worst: Phra Pradaeng at 22.0 µg/m³, #443 in the world.

Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.

← Phra Pradaeng 22.0 WHO annual guideline

Every measured city in Samut Prakan, Thailand, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.

Low risk1–3

Moderate risk4–6

High risk7–10

Very high risk10+

Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. 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

Samut Prakan 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	Band
Ban Khlong Bang Sao Thong	≈ 12 µg/m³	Low risk

Use this board

SmogRank, most polluted cities in Samut Prakan, Thailand, PM2.5, this year to 2 Oct 2026, 04:00 UTC, smogrank.com/th/region/samut-prakan?w=year.

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.

Updated 2026-10-02 04:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the Canada AQHI+ PM2.5 sub-index.