How long does it take for Canadian wildfires to affect NJ air quality?

Asked on: 7/27/2025

This question has been asked1times.

Canadian wildfire smoke can reach New Jersey within 1-3 days depending on wind patterns and fire intensity.

Estimated Duration: 3 days

Wildfire smoke travels via upper-level winds, which can carry particulates thousands of miles. For Canadian wildfires (particularly in Quebec or Ontario), prevailing westerly or northwesterly winds typically transport smoke to the northeastern U.S. within 24-72 hours. Factors like fire size, atmospheric conditions (e.g., jet stream speed), and proximity influence timing. Monitoring tools like NOAA's HYSPLIT models or AirNow's smoke forecasts provide real-time estimates. During peak wildfire season (May-September), NJ residents may notice hazy skies or odor within this timeframe, with air quality index (AQI) spikes often lagging slightly behind visible smoke arrival.