Haze Day Thailand air quality ranking: cities by PM2.5 right now
Right now Khon Kaen has the highest 1-hour PM2.5 in Thailand: 15 µg/m³ (Normal). The lowest is Phuket at 4 µg/m³. Singapore uses the official NEA reading; other places are CAMS model estimates, not official measurements. Updated 2026-10-11 23:00.
| # | Place | PM2.5 µg/m³ | Level | Source |
|---|---|---|---|---|
| 1 | Khon Kaen | 15 | Normal | Model estimate |
| 2 | Chiang Mai | 13 | Normal | Model estimate |
| 3 | Bangkok | 11 | Normal | Model estimate |
| 4 | Chiang Rai | 10 | Normal | Model estimate |
| 5 | Hat Yai | 7 | Normal | Model estimate |
| 6 | Pattaya | 7 | Normal | Model estimate |
| 7 | Phitsanulok | 6 | Normal | Model estimate |
| 8 | Nakhon Ratchasima | 5 | Normal | Model estimate |
| 9 | Surat Thani | 5 | Normal | Model estimate |
| 10 | Phuket | 4 | Normal | Model estimate |
Cleanest air right now
Phuket (4) · Surat Thani (5) · Nakhon Ratchasima (5) · Phitsanulok (6) · Pattaya (7)
How to read this ranking
- Values are 1-hour PM2.5 in µg/m³, updated about every 10–15 minutes. Levels use the NEA 1-hour bands (0–55, 56–150, 151–250, 251+).
- Singapore is an official NEA reading (worst region). Everywhere else is a CAMS model estimate: it shows how places compare but can differ from local monitoring stations.
- A model value is not directly comparable with an official station reading, so treat close rankings as ties.