Washington, DC (20597)

7:37 PM EDT on July 20, 2017 (GMT -0400)
The Washington Post | | Change Station
Active Advisory: Air Quality Alert

Elev 151 ft 38.90 °N, 77.03 °W | Updated 3 seconds ago

Partly Cloudy
Partly Cloudy
93.4 °F
Feels Like 99 °F
N
2.9
Wind Variable Wind from South
Gusts 4.0 mph

Today
High -- | Low -- °F
--% Chance of Precip.
Yesterday
High -- | Low -- °F
Precip. -- in
Pressure 29.90 in
Visibility 10.0 miles
Clouds Few 5000 ft
Mostly Cloudy 25000 ft
Heat Index 99 °F
Dew Point 69 °F
Humidity 46%
Rainfall 0.00 in
Snow Depth Not available.
5:59 AM 8:29 PM
Waning Crescent, 9% visible
METAR KDCA 202252Z 23009KT 10SM FEW050 BKN250 35/19 A2990 RMK AO2 SLP125 T03500194
Pressure 29.90 in
Visibility 10.0 miles
Clouds Few 5000 ft
Mostly Cloudy 25000 ft
Heat Index 99 °F
Dew Point 69 °F
Humidity 46%
Rainfall 0.00 in
Snow Depth Not available.
5:59 AM 8:29 PM
Waning Crescent, 9% visible
METAR KDCA 202252Z 23009KT 10SM FEW050 BKN250 35/19 A2990 RMK AO2 SLP125 T03500194

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10-Day Weather Forecast

Almanac

Astronomy

Jul. 20, 2017 Rise Set
Actual Time
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Nautical Twilight
Astronomical Twilight
Moon
Length of Visible Light
Length of Day
Tomorrow will be .
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Category 6

Welcome to Category 6. This is the collective home for Weather Underground's featured writeups by Dr. Jeff Masters (right), Bob Henson (left), Chris Burt, and other regular contributors.

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Air Quality

  Air Quality AQ Index Pollutant
Not available.

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Station Depth Elevation

Earthquake Activity

City Distance Mag. Time & Date
Minimum magnitude displayed is 2.5.

Coastal Water Temperatures

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Station Location Temp. Windchill Dew Point Humidity Wind Precip. Elev Updated Type
                   

Watches & Warnings

Air Quality Alert
Issued: 4:35 PM EDT Jul. 20, 2017 – National Weather Service

... 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.



435 PM EDT Thu Jul 20 2017

... 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.



435 PM EDT Wed Jul 19 2017

... Air quality alert is in effect for Thursday July 20 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 Thursday 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.



435 PM EDT Wed Jul 19 2017

... Air quality alert is in effect for Thursday July 20 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 Thursday 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.