Air quality alerts extend for third day as smoke from Canadian
Millions breathing hazardous air as smoke from Canadian wildfires
New York Air Quality Index Suffers From Canada Wildfires: Latest
Millions breathing hazardous air as smoke from Canadian wildfires
I can taste the air': Hazardous smoke from wildfires hangs over
Canada Wildfire Photos in New York City
Nats play on as Code Red Air Quality alert affects events
Photos: Canadian wildfires bring smoke to eastern US
Wildfire smoke and air quality updates: Northeast flights
Intense smoke fills NYC and forces a 'code red' in Philadelphia as