KNOXVILLE, Tenn. (WVLT) - Humidity levels are rising and the heat persists, with some developing rain and storms before on and off start moving in Friday into your weekend.

Be sure you have the WVLT First Alert Weather app for iPhone or Android to keep up with the latest forecast details for your location.

WHAT TO EXPECT

This morning is clear and milder, with a low of 63 degrees. Patchy fog is developing, and we still have a moderate level of smoke in the upper atmosphere from the Canadian wildfires. Air quality is still at a moderate level here, so no alerts.

Wednesday is mostly sunny, with a warm high of 86 degrees. A stray shower or storm is possible in the afternoon to evening, with some passing clouds. We have a easterly wind at 5 to 10 mph.

Tonight is partly cloudy, with are

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