SmogRank / Countries / Laos / August 2026

Most polluted cities in Laos, August 2026

1 city in Laos ranked by their average PM2.5 over the 31 days. Worst: Vientiane at 8.9 µg/m³, #877 of 2,312 cities in the world. A city needs measurements on 70% of the days to be ranked.

  1. 1Vientianelow-cost sensorsVientiane Prefecture
    8.9
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, August 2026 · Laos now

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SmogRank, most polluted cities in Laos, PM2.5, August 2026, smogrank.com/la/history/2026-08 (accessed 2 Oct 2026).

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