Thunderstorms across several districts over recent days have swept away the air pollution that blanketed the city for much of the past month, and visitors are once more making their way up the Doi Suthep viewpoint to photograph the cityscape laid out below — the clearest views in nearly four weeks.
Air quality data from Chiang Mai University’s Climate Change Data Centre shows hourly PM2.5 readings across all 25 districts have dropped below 100 micrograms per cubic metre this afternoon, with the highest reading recorded at Nakornping Hospital in Mae Rim at 75 µg/m³.
Active fire hotspots — which at their peak drove some of the worst pollution the city has recorded — have fallen to just two: one in Chom Thong district and one in Mae Chaem. Authorities say the figures signal that this year’s burning season is entering its final stretch, with an end expected in early May.
