Ashburn, Virginia, US
88°F
H 97° L 75° Feels Like: 100°

Partly Cloudy

last updated Thu, Jul 20, 8:35 PM

Tonight

75°F

Partly Cloudy with Isolated Showers

Wind: SW 3-6mph POP: 17% Humidity: 70% Dew Point: 70°F Pressure: 29.94 inHg

Tomorrow

93°F

Tomorrow

93°F 93°F °F

Partly Cloudy with Isolated Showers

Wind : WNW 5-8 MPH POP: 15% Humidity: 56% Dew Point: 72°F Pressure: 29.94 inHg

Tomorrow Night

73°F

Tomorrow Night

73°F °F 73°F

Partly Cloudy with Scattered Storms

Wind : NW 1-6 MPH POP: 26% Humidity: 75% Dew Point: 72°F Pressure: 29.91 inHg

Today

97°F

Today

97°F 97°F 75°F

Partly Cloudy with Isolated Storms

Wind: NW 3-7 MPH Humidity: 50% Dew Point: 72°F Pressure: 29.94 inHg 6:01 AM 8:31 PM

Fri, Jul 21

93°F

Fri, Jul 21

93°F 93°F 73°F

Partly Cloudy with Isolated Showers

Wind: WNW 1-8 MPH Humidity: 56% Dew Point: 72°F Pressure: 29.94 inHg 6:01 AM 8:30 PM

Sat, Jul 22

91°F

Sat, Jul 22

91°F 91°F 75°F

Partly Cloudy with Scattered Storms

Wind: N 2-7 MPH Humidity: 60% Dew Point: 70°F Pressure: 29.91 inHg 6:02 AM 8:30 PM

Sun, Jul 23

91°F

Sun, Jul 23

91°F 91°F 73°F

Mostly Cloudy with Scattered Storms

Wind: WSW 2-8 MPH Humidity: 66% Dew Point: 73°F Pressure: 29.74 inHg 6:03 AM 8:29 PM

Mon, Jul 24

90°F

Mon, Jul 24

90°F 90°F 70°F

Partly Cloudy with Scattered Storms

Wind: W 3-6 MPH Humidity: 64% Dew Point: 72°F Pressure: 29.83 inHg 6:04 AM 8:28 PM

Tue, Jul 25

84°F

Tue, Jul 25

84°F 84°F 64°F

Partly Cloudy with Isolated Storms

Wind: N 5-7 MPH Humidity: 62% Dew Point: 66°F Pressure: 29.91 inHg 6:05 AM 8:27 PM

Wed, Jul 26

84°F

Wed, Jul 26

84°F 84°F 66°F

Mostly Sunny

Wind: NNE 2-5 MPH Humidity: 59% Dew Point: 63°F Pressure: 30.03 inHg 6:06 AM 8:26 PM

Thu, Jul 27

86°F

Thu, Jul 27

86°F 86°F 70°F

Partly Cloudy with Scattered Storms

Wind: SSE 3-8 MPH Humidity: 64% Dew Point: 64°F Pressure: 30 inHg 6:06 AM 8:25 PM

Fri, Jul 28

91°F

Fri, Jul 28

91°F 91°F 72°F

Cloudy with Drizzle

Wind: S 5-12 MPH Humidity: 57% Dew Point: 61°F Pressure: 29.91 inHg 6:07 AM 8:24 PM

Sat, Jul 29

91°F

Sat, Jul 29

91°F 91°F 73°F

Partly Cloudy with Light Showers

Wind: SSW 2-5 MPH Humidity: 65% Dew Point: 68°F Pressure: 29.77 inHg 6:08 AM 8:23 PM

Sun, Jul 30

93°F

Sun, Jul 30

93°F 93°F 77°F

Partly Cloudy with Isolated Showers

Wind: W 2-14 MPH Humidity: 61% Dew Point: 72°F Pressure: 29.74 inHg 6:09 AM 8:22 PM

Mon, Jul 31

90°F

Mon, Jul 31

90°F 90°F 70°F

Sunny

Wind: WNW 2-5 MPH Humidity: 55% Dew Point: 63°F Pressure: 29.91 inHg 6:10 AM 8:21 PM

Tue, Aug 1

86°F

Tue, Aug 1

86°F 86°F 70°F

Sunny with Drizzle

Wind: W 3-7 MPH Humidity: 62% Dew Point: 64°F Pressure: 29.8 inHg 6:11 AM 8:20 PM

Wed, Aug 2

84°F

Wed, Aug 2

84°F 84°F 68°F

Partly Cloudy with Scattered Showers

Wind: NNE 2-4 MPH Humidity: 71% Dew Point: 64°F Pressure: 29.83 inHg 6:12 AM 8:19 PM

9:00 PM

88°F

9:00 PM

88°F 88°F 88°F
Feels Like: 91°

Partly Cloudy

Wind: SW 5mph Humidity: 57% Dew Point: 70°F Pressure: 29.91 inHg

10:00 PM

84°F

10:00 PM

84°F 84°F 84°F
Feels Like: 88°

Partly Cloudy

Wind: WSW 5mph Humidity: 63% Dew Point: 70°F Pressure: 29.91 inHg

11:00 PM

81°F

11:00 PM

81°F 81°F 81°F
Feels Like: 84°

Partly Cloudy

Wind: W 5mph Humidity: 69% Dew Point: 70°F Pressure: 29.94 inHg

12:00 AM

81°F

12:00 AM

81°F 81°F 81°F
Feels Like: 82°

Partly Cloudy

Wind: W 5mph Humidity: 72% Dew Point: 70°F Pressure: 29.94 inHg

1:00 AM

79°F

1:00 AM

79°F 79°F 79°F
Feels Like: 79°

Partly Cloudy

Wind: W 3mph Humidity: 74% Dew Point: 70°F Pressure: 29.94 inHg

2:00 AM

79°F

2:00 AM

79°F 79°F 79°F
Feels Like: 79°

Partly Cloudy with Isolated Showers

Wind: W 3mph Humidity: 77% Dew Point: 70°F Pressure: 29.94 inHg

3:00 AM

77°F

3:00 AM

77°F 77°F 77°F
Feels Like: 77°

Partly Cloudy with Isolated Showers

Wind: W 3mph Humidity: 79% Dew Point: 70°F Pressure: 29.94 inHg

4:00 AM

75°F

4:00 AM

75°F 75°F 75°F
Feels Like: 75°

Partly Cloudy with Isolated Showers

Wind: W 5mph Humidity: 84% Dew Point: 72°F Pressure: 29.91 inHg

5:00 AM

75°F

5:00 AM

75°F 75°F 75°F
Feels Like: 75°

Partly Cloudy with Isolated Showers

Wind: W 5mph Humidity: 85% Dew Point: 72°F Pressure: 29.94 inHg

6:00 AM

77°F

6:00 AM

77°F 77°F 77°F
Feels Like: 77°

Partly Cloudy with Isolated Showers

Wind: W 5mph Humidity: 82% Dew Point: 72°F Pressure: 29.94 inHg

7:00 AM

79°F

7:00 AM

79°F 79°F 79°F
Feels Like: 79°

Partly Cloudy with Isolated Showers

Wind: WNW 5mph Humidity: 79% Dew Point: 72°F Pressure: 29.94 inHg

8:00 AM

81°F

8:00 AM

81°F 81°F 81°F
Feels Like: 84°

Partly Cloudy with Isolated Storms

Wind: WNW 5mph Humidity: 72% Dew Point: 72°F Pressure: 29.94 inHg

9:00 AM

84°F

9:00 AM

84°F 84°F 84°F
Feels Like: 90°

Partly Cloudy with Isolated Storms

Wind: WNW 6mph Humidity: 65% Dew Point: 72°F Pressure: 29.97 inHg

10:00 AM

88°F

10:00 AM

88°F 88°F 88°F
Feels Like: 93°

Partly Cloudy with Isolated Storms

Wind: NW 7mph Humidity: 61% Dew Point: 72°F Pressure: 29.97 inHg

11:00 AM

90°F

11:00 AM

90°F 90°F 90°F
Feels Like: 97°

Partly Cloudy with Isolated Storms

Wind: NW 7mph Humidity: 58% Dew Point: 72°F Pressure: 29.97 inHg

12:00 PM

91°F

12:00 PM

91°F 91°F 91°F
Feels Like: 100°

Partly Cloudy with Isolated Storms

Wind: NW 7mph Humidity: 52% Dew Point: 72°F Pressure: 29.94 inHg

1:00 PM

93°F

1:00 PM

93°F 93°F 93°F
Feels Like: 100°

Partly Cloudy with Isolated Storms

Wind: WNW 7mph Humidity: 49% Dew Point: 72°F Pressure: 29.94 inHg

2:00 PM

93°F

2:00 PM

93°F 93°F 93°F
Feels Like: 102°

Partly Cloudy with Isolated Storms

Wind: WNW 7mph Humidity: 48% Dew Point: 72°F Pressure: 29.94 inHg

3:00 PM

93°F

3:00 PM

93°F 93°F 93°F
Feels Like: 102°

Partly Cloudy with Isolated Storms

Wind: WNW 7mph Humidity: 47% Dew Point: 72°F Pressure: 29.91 inHg

4:00 PM

93°F

4:00 PM

93°F 93°F 93°F
Feels Like: 102°

Partly Cloudy with Isolated Storms

Wind: WNW 8mph Humidity: 48% Dew Point: 72°F Pressure: 29.88 inHg

5:00 PM

93°F

5:00 PM

93°F 93°F 93°F
Feels Like: 102°

Partly Cloudy with Isolated Storms

Wind: WNW 8mph Humidity: 48% Dew Point: 72°F Pressure: 29.88 inHg

6:00 PM

93°F

6:00 PM

93°F 93°F 93°F
Feels Like: 100°

Partly Cloudy with Isolated Storms

Wind: NW 7mph Humidity: 49% Dew Point: 72°F Pressure: 29.88 inHg

7:00 PM

90°F

7:00 PM

90°F 90°F 90°F
Feels Like: 97°

Partly Cloudy with Isolated Storms

Wind: NW 6mph Humidity: 56% Dew Point: 72°F Pressure: 29.88 inHg

8:00 PM

88°F

8:00 PM

88°F 88°F 88°F
Feels Like: 95°

Partly Cloudy with Scattered Storms

Wind: NNW 5mph Humidity: 59% Dew Point: 72°F Pressure: 29.91 inHg

9:00 PM

84°F

9:00 PM

84°F 84°F 84°F
Feels Like: 90°

Partly Cloudy with Scattered Storms

Wind: NNW 5mph Humidity: 67% Dew Point: 72°F Pressure: 29.91 inHg

Local Radar

HEAT ADVISORY

Read More

...HEAT ADVISORY IN EFFECT FROM 10 AM TO 8 PM EDT FRIDAY...

The National Weather Service in Baltimore MD/Washington has
issued a Heat Advisory, which is in effect from 10 AM to 8 PM EDT
Friday.

* HEAT INDEX VALUES...Around 105 due to temperatures in the mid to
upper 90s, and dewpoints in the lower 70s.

* IMPACTS...The heat and humidity may cause heat stress during
outdoor exertion or extended exposure.

A Heat Advisory means that a period of high temperatures is
expected. The combination of high temperatures and high humidity
will create a situation in which heat illnesses are possible.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency - call 911.

AIR QUALITY ALERT

Read More

...AIR QUALITY ALERT IS IN EFFECT FOR FRIDAY JULY 21 2017...

The Metropolitan Washington Council of Governments in association
with Maryland Department of the Environment, Virginia Department
of Environmental Quality, and District Department of Environment
has issued a Code ORANGE Air Quality Alert Friday for
the DC metro area.

A Code Orange Air Quality Alert means that air pollution
concentrations within the region may become unhealthy for
sensitive groups. Sensitive groups include children, people
suffering from asthma, heart disease or other lung diseases and
the elderly. The effects of air pollution can be minimized by
avoiding strenuous activity or exercise outdoors.

For more information on ground-level ozone and fine
particles... visit www.cleanairpartners.net.

Weather news

All news
August Outlook - More Heat Ahead

The Climate Prediction Center issued its August outlook earlier today. It calls for warmer than normal temperatures over most of the nation, especially in the High Plains. Wetter than normal conditions are in the forecast for the Four Corners region. Cooler or drier than normal weather is not in the outlook anywhere the country. ;

Jul 20, 2017
Sweltering Heat from the East Coast to the Plains

Heat alerts have been expanded through the Plains and along the Eastern Seaboard as sweltering temperatures continue from the middle of the nation to the Atlantic Ocean. An Excessive Heat Warning continues in Iowa, Illinois, Nebraska, Missouri and Kansas. High temperatures today will be well into the 90s, with some areas climbing above 100. The…

Jul 20, 2017
Monsoonal Flooding Possible in the Four Corners Region

Monsoonal thunderstorms with heavy rain over the last few day have been creating some flooding issues and more thunderstorms are likely today. A Flash Flood Watch continues for South Utah and most of West Colorado. Storms are likely to be isolated, but locally heavy. Rainfall totals can add up quickly. Heavy rainfall, especially over…

Jul 20, 2017
Detwiler Fire Rages, Spews Smoke

In Mariposa County, California, the Detwiler Fire has grown explosively. Between July 18 and 20, it nearly tripled in size. Latest updates from Cal Fire have the fire over 70,000 acres with only 10% containment. It has destroyed 45 structures and damaged 6. Parts of nearby Yosemite National Park periodically lost power. The cause is…

Jul 20, 2017
Excessive Heat from the Plains to the Northeast

The heat of Summer will be blasting from the Central Plains to the Northeast this week. Excessive Heat Warnings have been issued for 8 states from the middle of the nation to the Eastern Seaboard. More than a dozen states are under Heat Advisories. In the Central Plains, triple digit heat combined with high humidity…

Jul 19, 2017
Why Does Rain Make Traffic Worse?

"Come on people! Act like we've been here before!" Is a phrase I find myself blurting into my windshield just about every rainy commute. But as it turns out, rain is actually the most deadly weather element when it comes to climbing in the driver's seat! The Numbers This isn't just some alternative summer-fact…

Jul 19, 2017
Keeping an Eye on the Tropics

Hurricane season is in full swing and as expected, there is a lot to track. There are several storms of note in the Pacific. As of Wednesday afternoon, there were two named storms, Hurricane Fernanda and Tropical Storm Greg. Hurricane Fernanda is a Category 1 storm with maximum sustained winds of 85 miles per hour.…

Jul 19, 2017
New Research Leads to New Definition of Lightning

New Mexico Tech scientists have measured lightning strikes that have been declared the longest duration and the longest distance ever recorded. The new study is based on fundamental research and development by Tech professors Ron Thomas, Bill Rison, and Paul Krehbiel. Over the past 20 years, they developed the Lightning Mapping Array, or LMA, which…

Jul 19, 2017
New Study Shows the Amazon Rainforest Makes its Own Rainy Season

[Credit: Center for International Forestry Research] A new study gives the first observational evidence that the southern Amazon rainforest triggers its own rainy season using water vapor from plant leaves. The finding helps explain why deforestation in this region is linked with reduced rainfall. The study analyzed water vapor data from NASA's Tropospheric Emission Spectrometer (TES) on…

Jul 19, 2017

August Outlook - More Heat Ahead

Jul 20, 2017

Sweltering Heat from the East Coast to the Plains

Jul 20, 2017

Monsoonal Flooding Possible in the Four Corners Region

Jul 20, 2017

Detwiler Fire Rages, Spews Smoke

Jul 20, 2017

Excessive Heat from the Plains to the Northeast

Jul 19, 2017

Why Does Rain Make Traffic Worse?

Jul 19, 2017

Keeping an Eye on the Tropics

Jul 19, 2017

New Research Leads to New Definition of Lightning

Jul 19, 2017

New Study Shows the Amazon Rainforest Makes its Own Rainy Season

Jul 19, 2017

Tweets

What a beautiful day at the Great Sand Dunes National Park! https://t.co/huAHiDElJQ

51 minutes ago by WeatherNation

The August outlook has been issued by the @NWSCPC and it calls for warmer than normal temperatures… https://t.co/rwYIhGzfE8

3 hours ago by WeatherNation

RT @JoshCozartWx: It's HOT! Current temperature in Wichita, KS is 101° but the heat index is at 105°! #KSwx @WeatherNation https://t.co/1…

3 hours ago by WeatherNation

A possible tornado was seen on this home surveillance video today in Hamburg, NY. A #tornado warning was issued for… https://t.co/7P2LACbVSO

4 hours ago by WeatherNation

Sweltering heat with sizzling temperatures from the Plains to the East Coast - https://t.co/KAk1k9SF5W https://t.co/sGssvNk9ns

4 hours ago by WeatherNation

RT @GarofaloWX: Severe Thunderstorm Watch for portions of Central New York & NE Pennsylvania until 8PM ET @MattMonroeTV & I have more on @W

5 hours ago by WeatherNation

A #severe thunderstorm watch remains in effect for parts of New York, PA until 8 pm eastern. Biggest threat = damag… https://t.co/3Vude8KR47

5 hours ago by WeatherNation

The #Detwiler #fire has grown to over 70,000 acres. More info: https://t.co/hZO8Hs2sLL https://t.co/qih7rofzkt

7 hours ago by WeatherNation

RT @NWStornado: Tornado Warning including Lackawanna NY, Hamburg NY, East Aurora NY until 1:00 PM EDT https://t.co/yfeava8yXB

8 hours ago by WeatherNation

UPDATE: #Detwiler #fire is over 70K acres with only 10% containment. It has destroyed 45 structures and damaged 6. https://t.co/1LcnSqyYE7

9 hours ago by WeatherNation

Monsoonal storms near the Four Corners will produce another round of heavy rain today that may create flooding… https://t.co/E44XZwXp0e

9 hours ago by WeatherNation

Strong storms moved through Northern Illinois last night and this was spotted about an hour south of #Chicago!… https://t.co/vXUtNbMFSu

9 hours ago by WeatherNation

WOW!! Incredible video of monsoonal flash flooding west of Las Vegas, NV in Red Rock Canyon yesterday. #NVwxhttps://t.co/qUqg6zo3us

10 hours ago by WeatherNation

Strong morning #thunderstorms moved through #Chicago, IL eariler. The Midwest will be under-the-gun for severe weat… https://t.co/QOO4gKDvLg

12 hours ago by WeatherNation

Thousands flee their homes in #MariposaCounty, CA, praying their home won't be devoured by the #DetwilerFire. https://t.co/hZO8Hsk4al

13 hours ago by WeatherNation

Children were evacuated from this camp before the #WhittierFire burned most of it to the ground. Now it's 18,395 Ac… https://t.co/DlkLiBaVen

20 hours ago by WeatherNation
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