Friday starts mostly clear and muggy, with temperatures in the low 70s early and a feels like temperature closer to 80. By afternoon, partly sunny skies will push the high to 92, and it will feel more like 103 at times. A spotty thunderstorm could pop up later in the day, with rain chances around 55 percent. Winds stay light out of the east-northeast near 5 mph. This evening brings another chance for a thunderstorm before skies turn partly cloudy. Overnight stays warm and humid, with the low settling near 70 and light southeast winds.
A Heat Advisory remains in effect through Saturday evening, with heat index values as high as 107 possible. An Air Quality Alert is also in effect Friday from 10 a.m. to 8 p.m. for the St. Louis metro area. Ozone levels may be unhealthy for sensitive groups.
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Friday’s allergy index looks moderate overall. Ragweed is the main allergen at moderate levels, while grass, mold and tree pollen remain low.
Saturday stays hot with a mix of sun and clouds. The high reaches 94 and the low drops to 65. Rain chances are low, and a southwest breeze may gust near 14 mph during the day.
Sunday looks a little less intense, with partly sunny skies and a high of 84. The low will be 65. Most of the day stays dry, though rain chances rise Sunday night with a late shower or thunderstorm possible.
Get the latest updates on weather conditions here: RiverBender.com/weather.
