Air quality in Laos
Air quality index (AQI⁺) and PM2.5 air pollution in Laos • 10:21, May 31
Live most polluted city ranking
Real-time Laos most polluted city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 |  Muang Phon-Hong | 112 | |
| 2 | Vientiane | 71 | |
| 3 | Luang Prabang | 69 | |
| 4 | Viengthong | 61 | |
| 5 | Phongsali | 59 | |
| 6 | Thakhek | 58 | |
| 7 | Sainyabuli | 52 | |
| 8 | Muang Nale | 47 | |
| 9 | Champasak | 44 | |
| 10 | Muang Phonsavan | 39 |
2025 Laos most polluted city
| Vientiane, Vientiane | 79 |
Live cleanest city ranking
Real-time Laos cleanest city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 | Pakse | 12 | |
| 2 | Salavan | 14 | |
| 3 | Muang Phin | 30 | |
| 4 | Muang Khamkeut | 33 | |
| 5 | Champasak | 39 | |
| 6 | Muang Phonsavan | 39 | |
| 7 | Muang Nale | 47 | |
| 8 | Sainyabuli | 52 | |
| 9 | Thakhek | 55 | |
| 10 | Phongsali | 59 |
2025 Laos cleanest city
| Muang Khong, Champasak | 53 |
2025 Laos air quality
2025 country air quality average
How polluted is Laos?
PM2.5 concentration is currently 4.5 times the World Health Organization annual PM2.5 guideline value.
2025 AQI⁺ country ranking
Which country had the worst air quality in 2025?
Worldwide PM2.5 ranking
2025 Laos global rank in air pollution
30/143
