SmogRank / World / Laos / February 2026

Most polluted cities in Laos, February 2026

3 cities in Laos ranked by their average PM2.5 over the 28 days. Worst: Vientiane at 45.4 µg/m³, #129 of 2,520 cities in the world. Cleanest: Ban Houakhoua at 26.6. A city needs measurements on 70% of the days to be ranked.

← Vientiane 45.4
Every city in Laos ranked for February 2026, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1Vientianelow-cost sensorsVientiane Prefecture
    125
  2. 2PakxanBolikhamsai
    85
  3. 3Ban HouakhouaBokeo
    84
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, February 2026 · Laos now

Use this board

SmogRank, most polluted cities in Laos, PM2.5, February 2026, smogrank.com/la/history/2026-02 (accessed 2 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.