Credit: National Weather Service

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Crank up the A/C and get one of those spray bottles with the fans because the District is about to get dangerously hot.

The National Weather Service says the heat index in parts of the D.C.-area could reach the triple digits today, triggering a code-orange air quality alert. This means “sensitive groups” like children and the elderly should take care not to overexert themselves given high concentrations of air pollutants. The D.C. government plans to activate a heat emergency at 1 p.m.

“While the most dangerous heat is expected Friday, it will be hot and humid today through Saturday,” an AlertDC release notes. “Heat index will be in the mid-90s to near 100 each afternoon. Peak Heat Index Values (“feels like”): 100-105+ degrees.”

Capital Weather Gang reports that the region will see an official heat wave through Saturday. “A thunderstorm or two may briefly cut the heat along the way, before a cool front probably bring a more comfortable Sunday,” they explain. They estimate a 20 percent chance of a late-afternoon or evening storm today.