Phuket Air Quality History

Explore Phuket’s daily AQI and PM2.5 records from 28 March 2025 to 18 October 2026. Browse by year, month or day; each record identifies coverage and gaps.

Missing readings remain gaps; they never count as clean air. Choose a year below or a month from the archive links.

Download all recorded daily AQI and PM2.5 as CSV

How these historical readings are calculated

Daily PM2.5 averages the available hourly concentrations in Bangkok time, then converts that concentration using this site's original AQI calculation. Weekly, monthly and yearly values average the available daily concentrations before conversion, including partial days. AQI numbers are never averaged.

From 18 October 2026, each locally collected reading averages the two highest fresh PM2.5 observations, or uses one when only one is eligible. These saved calculations are averaged within each hour. An hour needs at least 23 of 30 two-minute samples to qualify for coverage; less-covered hours remain visible as estimates. Earlier provider history selects the two highest available station concentrations for each hour, with the same one-station fallback. A complete day has at least 18 covered hours; today is always provisional.

The historical provider may supply corrected concentrations where the original live feed supplied raw values; unavailable original inputs cannot be reconstructed. This is a PM2.5 indicator, not an official multi-pollutant AQI or EPA NowCast.

Read the calculation and coverage methodology · Compare Phuket air quality by calendar month