Under a Code Orange alert, it's recommended that children, older adults and those with respiratory illnesses limit time spent outdoors.

On Monday at 5:14 p.m. an air quality alert was reported by the National Weather Service in effect until Wednesday at midnight for Warren, McKean, Elk and Cameron counties.

The state Department of Environmental Protection has issued an air quality advisory for Centre County as smoke from Canadian wildfires impacts much of Pennsylvania this week. A Code Orange Air Quality Action Day for particulate matter pollution from wildfire smoke will be in effect on Tuesday for Centre and 41 other counties,