Reported by World Air Quality Index today.
It is one of only 4 we have recorded within 20 km of this point since 13 April 2026. The last comparable one was on 25 August 2026.
What the source measured
World Air Quality Index reported: AQI 267 (Very Unhealthy) at สวนออมสุข ต.เจดีย์หลวง อ. แม่สรวย จ. เชียงราย
The air quality index read 267 (Very Unhealthy) at the สวนออมสุข ต.เจดีย์หลวง อ. แม่สรวย จ. เชียงราย station.
This is the highest air quality index we have recorded at this point, over 15 readings since 26 August 2026 — the previous range was 240 to 267.
How we know
One source: World Air Quality Index. Not yet confirmed by a second, independent source.
Our own score for this event is 36 out of 100, at 46 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Air quality |
| Severity | high |
| Calamity Score (ours) | 36 / 100 |
| Our confidence | 46% |
| Coordinates | 19.5722, 99.4871 |
| Nearest City | Chiang Rai (52 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-01T18:00:00.000Z |
| Source | https://aqicn.org/city/@-2448190 |
Score Breakdown
Technical Details
| Aqi | 267 |
| AqiCategory | Very Unhealthy |
| StationName | สวนออมสุข ต.เจดีย์หลวง อ. แม่สรวย จ. เชียงราย |
| StationUid | -2448190 |
Safety Information
When air quality is hazardous: stay indoors with windows closed, and run a filtered air purifier if you have one. Avoid outdoor exercise. Children, older adults and anyone with heart or lung conditions are affected first and worst — an N95 respirator helps outdoors, a cloth mask does not.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a air quality event with CalamityScore 36/100 (Thailand), based on data from waqi. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.