AccuWeather:Heat Advisory today, a gusty storm tonight

PHILADELPHIA (WPVI) -- A Heat Advisory has been posted by the National Weather Service for counties near I-95 from late this morning through 8 p.m. this evening. Heat index values will make it feel like the mid-90s. The air will be thick and heavy. Cool drinks are essential today, along with a/c and shady breaks.

Clouds will mix with sun today, but the big story will be the combination of heat and oppressive humidity making for a steamy, uncomfortable afternoon. Look for a high of 90 with heat index values in the mid-90s. A late afternoon thunderstorm can't be ruled out, especially in the NW suburbs.

TONIGHT: It's warm and very muggy with a line of showers and thunderstorms likely during the evening. Some of these storms could become severe. Downpours are also likely in this humid air mass. We should dry out by about midnight. The low is 72.

TUESDAY: Look for mainly cloudy skies with showers and a spotty thunderstorm possible during the morning and early afternoon. Some drying is likely later in the day. It will not be as hot with a high of just 75. We'll also see humidity dropping as we move through the day.

WEDNESDAY: High pressure builds into the region, making for a sunny and nice day with low humidity and a high of 78.

THURSDAY: This is another comfortable and nice day with sunshine, continued low humidity and a slightly warmer high of 80.

FRIDAY: Sun will likely give way to increasing clouds as we move through the day. An afternoon or evening thunderstorm can't be ruled out. The high is 80.

SATURDAY: We'll see more clouds than sun with another chance of a shower or thunderstorm. It's breezy, but also more humid with our high climbing to 84.

SUNDAY: Look for mostly cloudy skies, continued humidity and another shower or thunderstorm around. Our high is 84.

MONDAY: Clouds and sun will share the skies. It's humid and unsettled with more showers and thunderstorms likely. The high is 86.
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