Was October 24, 2026 high ragweed pollen in Beauharnois?
NO
No — frost has ended ragweed season here; this morning's low was a hard -4.7 °C.
Why
- Beauharnois low today: -4.7 °C, yesterday -0.6 °C
- Southern Quebec ragweed pollen stops at the first fall frost
- Air quality good: US AQI 45, PM2.5 10.8 µg/m³