Smoke from wildfires in the Canadian Prairies has led to special air-quality warnings across Canada, including major cities such as Toronto. The wildfire smoke has also spread into the United States, affecting large parts of the Midwest and Northeast regions. Cities like Minneapolis and Chicago have been identified among the world’s most polluted due to this smoke. Air quality in these areas has reached unhealthy levels, particularly impacting sensitive groups. Forecasters predict continued hazy skies in Canada as the wildfire smoke persists. The smoke and particulate matter from hundreds of forest fires have caused widespread air pollution concerns in both countries.