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DC region under code purple air quality alert due to heat and smoky skies

The sun rises behind the U.S. Capitol building during a summer heat wave as smoke from wildfires in Canada fills the air on July 17, 2026 in D.C.
The sun rises behind the U.S. Capitol building during a summer heat wave as smoke from wildfires in Canada fills the air on July 17, 2026 in D.C. (Photo by Kevin Carter/Getty Images)
Smoke and haze from the Canadian wildfires shrouds the rising sun behind the U.S. Marine Corps War Memorial on July 17, 2026
Smoke and haze from the Canadian wildfires shrouds the rising sun behind the U.S. Marine Corps War Memorial on July 17, 2026, in Arlington, Virginia. (Photo by J. David Ake/Getty Images)
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The sun rises behind the U.S. Capitol building during a summer heat wave as smoke from wildfires in Canada fills the air on July 17, 2026 in D.C.
Smoke and haze from the Canadian wildfires shrouds the rising sun behind the U.S. Marine Corps War Memorial on July 17, 2026

Air quality in the D.C. region is very poor Friday, as plumes of smoke blown down from Canadian wildfires make for hazy skies that reek.

A code purple air quality alert has been issued for the D.C. area and the Baltimore area, meaning that the air will be unhealthy for everyone, especially those with health issues, according to the National Weather Service.

It’s strongly recommended that you limit your time outside so that you don’t get exposed to the heat and smoke.

The thick smoke in the sky Friday will be similar to what happened during the summer of 2023 when the region was under code red, purple and maroon alerts, according to 7СÂÜÀòÓ°ÊÓ First Alert Meteorologist Eileen Whelan.

“The darker the color means a higher concentration of smoke particles in the air, so that can make it more difficult to breathe, especially if you’re doing strenuous activity outdoors, taking deeper breaths,” Whelan said.

Other than the smoky air, it will be extremely hot with temperatures in the lower to middle 90s.

“As we move through the evening and into the overnight, our winds will change direction, and that’s going to improve our air quality,” said 7СÂÜÀòÓ°ÊÓ First Alert Meteorologist Steve Rudin. “They’ll be from the south as we head through the overnight, with temperatures dropping into the 70s.

An isolated shower or thunderstorm could pop up overnight.

The air quality will start to improve Saturday because of a cold front removing the smoky air and bringing strong chances of rain and storms. It will still be hot with temperatures in the upper 80s to lower 90s.

Whelan said these storms “could produce damaging wind gusts, hail, an isolated tornado or even flash flooding.”

“Have a place to seek shelter should storms develop for your outdoor plan,” Whelan said.

Conditions will continue to improve Sunday, despite starting off muggy, with partly cloudy skies with seasonable temperatures in the upper 80s to around 90 degrees and a chance for an isolated shower.

How to breathe safely

СÂÜÀòÓ°ÊÓ's Neal Augenstein hears from a doctor on how to breathe safely during poor air quality.

The code red quality air comes from smoke from the Canadian wildfires and summertime ozone pollution.

So what should you know about staying safe?

“The smoke gives off different gasses, and those particles can be very small and fine, and get into your lungs. They can get into your bloodstream,” allergist and immunologist Dr. Purvi Parikh said. “If you’re having symptoms of headache, itchy, watery eyes, sore throat, coughing, chest pain, chest tightness — these are all symptoms that you’re being affected by the poor air quality.”

If you’re feeling unwell or dizzy, call your doctor. You’ll want to stay indoors as much as possible. But some people indoors might still be affected. Parikh said air purifiers can help filter out the dangerous particles. 

DC region responses to the heat

Officials in the D.C. region are responding to the hot and smoky weather with extreme caution.

The Metropolitan Washington Council of Governments is implementing a code purple air quality health advisory for the entire region.

They are suggesting safety tips such as avoiding arduous activities if you see and smell smoke, taking breaks outdoors where there’s clean air, wearing an N95 mask and use a portable air cleaner in rooms.

In Virginia, Fairfax County is cancelling all outdoor activities, such as recess, team practices and extracurricular activities



Forecast

FRIDAY: WEATHER ALERT
Haze and smoke
Highs: 90-95
Winds: Northeast 5-10 mph

FRIDAY NIGHT: WEATHER ALERT
Smoky skies, isolated thunderstorms
Lows: 72-77
Winds: South 5 mph

SATURDAY: WEATHER ALERT
Partly sunny, very humid, strong storms possible
Highs: 86-92
Winds: Southwest 5-15+ mph

SUNDAY:
Partly cloudy, isolated shower, storm
Highs: 85-90
Winds: North 5-10 mph

Current Conditions

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Tadiwos Abedje

Tadi Abedje is a freelance digital writer/editor for СÂÜÀòÓ°ÊÓ. He was born in Washington, D.C., and grew up in Northern Virginia. Journalism has been his No. 1 passion since he was a kid and he is blessed to be around people, telling their stories and sharing them with the world.

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