Heat Warnings Persist Across Eastern Canada, Wildfire Smoke Affects Air Quality in New Brunswick

Large swaths of Eastern Canada, including Ontario, Quebec, New Brunswick, Nova Scotia, and Prince Edward Island, remain under heat warnings on Friday, July 3, 2026. Humidex values are making it feel significantly hotter, with highs around 33°C and humidex near 45°C in some areas. Additionally, Environment Canada has issued air quality warnings for northwestern New Brunswick due to drifting smoke from wildfires in Quebec, leading to poor air quality and reduced visibility.