Live Data
Air Quality Tracker
Real-time PM2.5 readings for Thai cities during burning season (November -- April). Data from OpenAQ, updated every 15 minutes. WHO safe limit: 15 µg/m³ (annual average), 45 µg/m³ (24-hour).
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Why this matters
During Thailand's burning season (November through April), open crop burning drives PM2.5 levels to between 13 and 27 times the WHO safe limit in Chiang Mai. The smoke is not just a Thai problem -- it drifts across borders into Myanmar, Laos, Cambodia, and Vietnam.
PM2.5 particulates (2.5 micrometres or smaller) penetrate deep into lung tissue and enter the bloodstream. Long-term exposure is linked to cardiovascular disease, stroke, and premature death. This is the health cost of crop waste burning -- and why finding alternatives matters.
Source: IQAir 2024 World Air Quality Report; WHO 2021 Global Air Quality Guidelines