Storm Team4

Weather Alert: Heat index soars above 100° as poor air quality grips DC area

Heat advisories and air quality alerts have been issued in D.C., Maryland and Virginia.

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Feels-like temperatures surpassed 100° in the D.C. area Wednesday afternoon amid poor air quality in the region.

Storm Team4 Meteorologist Chuck Bell said it's important to stay weather alert during the sweletering heat. Wear light, loose-fitting clothing, drink plenty of water and limit time outdoors, especially if you're doing strenuous activities.

Temperatures climbed into the mid-90s by about 1:30 p.m., and the heat index reached 103° in Washington, D.C.

There's a very small chance for storms. Any storms that pop up during the day could turn severe because of the heat.

The good news? This sky-high heat will start to subside by Thursday, although humidity will stick around into Labor Day weekend.

Heat advisories in D.C., Maryland and Northern Virginia

A heat advisory has been issued for the afternoon and early evening in D.C., plus much of Maryland and Northern Virginia. The heat index could be at 105° or higher for several hours, Bell said.

Maryland counties under a heat advisory include Charles, Montgomery and Prince George's. In Virginia, heat advisories were issued for Arlington, Alexandria, Fairfax, Prince William and Loudoun counties plus nearby cities.

Temperatures are expected to rise to almost 100° today as the heat index will sit at or above 100°. A Code Orange air quality alert is expected to be in place later Wednesday so try to limit your outdoor activities to be safe. News4's Juliana Valencia reports. 

See a full list of weather alerts here.

Air quality alerts

On top of the hot weather, there is poor air quality around the area.

A code orange air quality alert is in effect for D.C. and surrounding areas, which means members of sensitive groups should be extra careful.

Those vulnerable to to air pollution include people with chronic health issues, children and the elderly, but bad pollution can affect healthy people, too.

You can check which air quality code was issued in your area and the best tips for staying safe here.

Try your best to limit time outside, reduce strenuous activities like exercise, shorten dog walks and stay hydrated.

School and other local schedule changes due to heat

School is back in session and many districts are grappling with the extreme heat by keeping students inside.

Arlington Public Schools announced that there will be no outdoor recess or other outdoor activities during school hours. After-school activities like athletics will move indoors.

Prince William County Public School announced that all outdoor activities must move inside or be canceled between 1 p.m. and 7 p.m.

Vienna, Virginia, is starting its solid waste collection to begin one hour earlier. Residents are advised to place trash and recycling by the curb at 5 a.m.

Residents of College Park, Maryland should put their trash out earlier too. Solid waste collection will start an hour earlier at 6 a.m.

Stay with Storm Team4 for the latest forecast. Download the NBC Washington app on iOS and Android to get severe weather alerts on your phone.

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