Air quality in Saint-Hyacinthe, estimated
Quebec, Canada. No ground monitor we can use is in this city, so these numbers are model estimates, not measurements.
≈5µg/m³
Good, estimated
Estimated PM2.5, 7-day average to 2026-09-30, about 0.3× the WHO 24-hour guideline. 30-day average ≈ 7 µg/m³.
Model estimate from the Copernicus Atmosphere Monitoring Service (CAMS), scaled by 1.05 to match 10 measured cities within 300 km over the last week. Adjusted this way, a single day lands within ×1.5 of what a monitor would read about two times in three: a guide, not a measurement. Not ranked on SmogRank's boards.
Last 30 days, estimated
Measured cities nearby
| City | Distance | 7-day average |
|---|---|---|
| Granby | 31 km | 5.0 µg/m³ |
| Saint-Jean-sur-Richelieu | 43 km | 7.0 µg/m³ |
| Brossard | 44 km | 6.2 µg/m³ |
| Drummondville | 46 km | 5.1 µg/m³ |
| Sorel-Tracy | 47 km | 5.7 µg/m³ |
| Rivière-des-Prairies–Pointe-aux-Trembles | 49 km | 5.7 µg/m³ |
Estimates contain modified Copernicus Atmosphere Monitoring Service information 2026. How estimates are made.