 Heat advisory in effect until 8 p.m. this evening. Heat index values up to 100. Air quality alert in effect most of the day, 11 a.m. to 11 p.m. for Connecticut except coastal New London County. And if you're heading to the beach on the south shore of Long Island, be aware high rip current risk in effect through this evening for that region. Partly cloudy afternoon showers, thunderstorms are possible today.