At 4:19 p.m. on Tuesday, the National Weather Service reported an updated air quality alert in effect until Wednesday at midnight for Sussex, Warren, Morris, Hunterdon and Somerset counties.

The National Weather Service announced air quality alerts in 10 states Tuesday as smoke from the Canadian wildfires continues to spread across the U.S. border. The alerts come as the Canadian Interagency Forest Fire Centre lists 746 active fires Tuesday morning,

Air quality levels are predicted to score higher than 100 on the air quality index for fine particulates, with the alert expected to be in effect until midnight on Aug. 5.