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Code Red: Air quality in DC area dips to new lows

WASHINGTON — If you were gasping for air on Monday, you weren’t imagining things: The air quality in the D.C. metropolitan area was the worst it’s been in years.

The Metropolitan Washington Council of Governments and Clean Air Partners said in a statement Tuesday that ground-level ozone pollution reached Code Red status on Monday — the first time since 2012, it said.

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Code Orange status is not unheard-of during D.C. summers; it means children, elderly people and people with respiratory problems or sensitivities to pollution should limit their time spent outside.

Code Red is one step worse — it means that everyone could feel some health effects and should limit their outdoor activity.

Tuesday is forecast to be a Code Orange day, the statement said.

Storm Team 4 meteorologist Amelia Draper called high ozone levels “a summertime situation,” adding that heat can help cause the chemical reactions with car exhaust and other emissions that create high ozone levels.

She said the recent hot weather and high pressure have something to do with it as well: “We’ve had kind of a lack of wind, and that will help increase the levels of ozone” by not stirring the air up sufficiently to disperse it.

“When it gets hot and you don’t have a breeze … that’s when you get the high levels of ozone,” Draper said.

Hot, humid week ahead for DC area with severe storm risk

A dangerous heat wave will grip the D.C. area through Thursday, with highs in the mid to upper 90s and heat index values between 100 and 105. Hot and humid conditions are expected through Thursday, according to the National Weather Service, which said to expect daily thunderstorm chances and a risk of severe thunderstorms. 7News Meteorologist Eileen Whelan told WTOP that most of Tuesday will stay dry, but a few late-day thunderstorms are possible, especially north and east of D.C. as storms drift south from Pennsylvania. Any storm could produce damaging wind gusts and hail, but Whelan reiterated "storm chances are low" on Tuesday. Due to a lack of air conditioning, Parkdale High School in Riverdale, Maryland, closed early at 10:30 a.m. on Tuesday, Prince George's County Public Schools said in a social media post.
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