SmogRank / Countries / Senegal / May 2026

Most polluted cities in Senegal, May 2026

3 cities in Senegal ranked by their average PM2.5 over the 31 days. Worst: Saint-Louis at 14.6 µg/m³, #242 of 2,243 cities in the world. Cleanest: Thiès at 7.2. A city needs measurements on 70% of the days to be ranked.

  1. 1Saint-Louislow-cost sensorsSaint-Louis
    14.6
  2. 2Ziguinchorlow-cost sensorsZiguinchor
    10.3
  3. 3Thièslow-cost sensorsThies
    7.2
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, May 2026 · Senegal now