SmogRank / World / Senegal / September 2026

Most polluted cities in Senegal, September 2026

4 cities in Senegal ranked by their average PM2.5 over the 30 days. Worst: Saint-Louis at 44.5 µg/m³, #135 of 2,646 cities in the world. Cleanest: Dakar at 10.8. A city needs measurements on 70% of the days to be ranked.

← Saint-Louis 44.5
Every city in Senegal ranked for September 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. 1Saint-Louislow-cost sensorsSaint-Louis
    123
  2. 2Ziguinchorlow-cost sensorsZiguinchor
    56
  3. 3Thièslow-cost sensorsThies
    55
  4. 4Dakarlow-cost sensorsDakar
    54
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, September 2026 · Senegal now

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SmogRank, most polluted cities in Senegal, PM2.5, September 2026, smogrank.com/sn/history/2026-09 (accessed 2 Oct 2026).

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