Today's air quality in Vang Vieng — fine particles and dry-season smoke, in plain language, updated through the day.
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A plain-language read on the air over Vang Vieng — the fine-particle (PM2.5) and coarse-particle levels through the day. In the green, rainy months the air here is usually clean; the reading matters most in the dry-season burning weeks, when smoke settles into the valley.
Fair Fine for being outside, including exercise, for almost everyone.
| Day | Air quality |
|---|---|
| Wed 8 Jul | Fair |
| Thu 9 Jul | Fair |
| Fri 10 Jul | Good |
| Sat 11 Jul | Fair |
From roughly February to May, and worst from mid-March to mid-April, farmers across Laos and the region clear fields by burning them. The smoke drifts for hundreds of kilometres and hazes the whole north. On a bad day in late March 2025, monitors put Vang Vieng in the ‘unhealthy’ range with fine-particle levels many times the safe guideline, and Luang Prabang to the north was worse still. If the sky is white and flat and the peaks disappear, that is smoke, not cloud.
Vang Vieng sits in a bowl ringed by karst peaks. That is what makes the scenery, but it also means that when smoke or still, humid air settles in, it lingers rather than blowing through. Mornings can be the haziest part of the day before any breeze picks up.
Once the wet season arrives, around May and June, the rain washes the particles out and the air is usually clean through to about October — often many times cleaner than the March peak. If you can choose when to come and the air matters to you, the green months are the clear ones.
Smoke-heavy days are hardest on children, older people, pregnant women, and anyone with asthma or a heart or lung condition. On a hazy day it helps to keep hard outdoor activity — a long cycle, a climb, tubing — for a clearer window, keep windows shut when the smoke is thick, and a well-fitted mask (FFP2/N95) helps outdoors. There is no official street-level monitor here, so treat the number as a guide to the trend, not a precise measurement.
Updated . These are modelled estimates for the area around Vang Vieng, not readings from a street monitor — air right beside a busy road can be worse than the area-wide picture. Air quality data by Open-Meteo (CC BY 4.0), based on Copernicus CAMS.