SmogRank / Countries / Canada / New Brunswick
Most polluted cities in New Brunswick, Canada
4 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Edmundston at 6.8 µg/m³, #760 in the world.
4 good
- 1Edmundston 6.80.5×
- 2Fredericton 5.10.3×
- 3Moncton 4.90.3×
- 4Saint John 4.40.3×
Estimated: cities without a monitor
New Brunswick cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Dieppe | ≈ 3 µg/m³ |
| Riverview | ≈ 3 µg/m³ |
| Quispamsis | ≈ 4 µg/m³ |
| Lutes Mountain | ≈ 4 µg/m³ |
| Saint John West | ≈ 7 µg/m³ |
Use this board
SmogRank, most polluted cities in New Brunswick, Canada, PM2.5, last 24 hours to 2 Oct 2026, 00:00 UTC, smogrank.com/ca/region/new-brunswick.
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.
Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.