Emily Pike

Tonight, the evening will begin partly cloudy before skies become cloudy overnight. Low temperatures will be around 60 degrees. South winds around 10 mph, with gusts up to 20 mph during the evening, will become light and variable overnight.On Monday, skies will remain mostly cloudy with highs in the upper 70s.

Today will be hot, with high temperatures around 90 degrees. Northwest winds will blow at 10 to 15 mph, with gusts up to 25 mph. There is a 20 percent chance of rain. Heat index values will reach the mid-90s.Tonight will be partly cloudy with isolated showers during the evening, followed by mostly clear skies after midnight. Humidity will decrease, and low temperatures will fall into the lower 60s. Northwest winds of 10 to 15 mph during the evening will become light and variable overnight.

An Air Quality Alert is in effect across much of western, central, and coastal Maine until midnight Sunday night.Wildfire smoke is expected to increase fine particle pollution at times this weekend, causing air quality to reach unhealthy levels for sensitive groups.