"Canadian Wildfires Blanket Pittsburgh in Smoke, Triggering Air Quality Alerts in Western Pennsylvania"

Skies in Pittsburgh are being filled with smoke from Canadian wildfires, prompting a Code Red air quality alert from the Department of Environmental Protection. The alert advises young children, older individuals, and those with respiratory issues to avoid outdoor activities, while others should reduce prolonged or heavy exertion. The smoke has made visibility difficult and is expected to result in very unhealthy air quality levels, potentially leading to the closure of public places. However, conditions are forecasted to improve by Thursday.