City of Philadelphia (.gov)Philadelphia under air quality alert for unhealthy air | Department of Public HealthJun 7, 2023more_vert
Billy PennWildfire Philadelphia warning: 'Avoid outdoors' and try not to driveJun 7, 2023Billy PennBy Billy Pennmore_vert
The Washington PostExplaining the Air Quality Index: What Code Red, Code Orange mean - The Washington PostJun 7, 2023Andrew JeongBy Andrew Jeongmore_vert
Yahoo! VoicesCode Orange air quality alert in place for Pittsburgh area WednesdayJun 6, 2023more_vert
The Washington PostPhiladelphia's hazardous air quality from Canadian wildfires is worst level in city since 1999 - The Washington PostJun 8, 2023Timothy BellaBy Timothy Bellamore_vert