An air quality alert remains in effect today for parts of the Hudson Valley due to smoke and haze from the Canadian wildfires.

Extreme heat warnings are remaining in place for parts of southeast California, southern Nevada and much of Arizona where high temperatures between 108 and 118 degrees are possible through Friday. Record high temperatures are also possible for cities like Phoenix and Tucson through Thursday, including Albuquerque through Friday.

Air quality alerts are issued when pollution levels rise to unhealthy levels, warning the public, especially vulnerable groups, to limit outdoor exposure for health and safety.