"Canadian Wildfires Blanket Pennsylvania in Code Red Air Quality Alert"

Pittsburgh is experiencing a decline in air quality as smoke and haze from Canadian wildfires blanket the metro area. A "code red" air pollution warning has been issued for several counties, indicating that the air is very unhealthy. People are advised to avoid outdoor exercise and strenuous activity, particularly young children, the elderly, and those with respiratory conditions. The smoke is expected to worsen throughout the day and may impact air travel.