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AIR QUALITY ALERT
AIR QUALITY ALERT ISSUED MAY 13 AT 3:30PM CDT
Effective: 2026-05-13 15:30:00 Local Time Expires: 2026-05-14 19:00:00 Local Time Issued by: NWS Austin/San Antonio TX
Alert Text
AQAEWX ATMOSPHERIC CONDITIONS ARE EXPECTED TO BE FAVORABLE FOR PRODUCING HIGH LEVELS OF OZONE AIR POLLUTION IN THE AUSTIN AREA ON THURSDAY.

YOU CAN HELP PREVENT OZONE POLLUTION BY SHARING A RIDE, WALKING OR RIDING A BICYCLE, TAKING YOUR LUNCH TO WORK, AVOIDING DRIVE THROUGH LANES, CONSERVING ENERGY, AND KEEPING YOUR VEHICLE PROPERLY TUNED.

IF REQUIRED, THE NEXT OZONE ACTION DAY WILL BE ISSUED BY 3 PM ON THURSDAY, MAY 14, 2026.
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WILLIAMSON, HAYS, TRAVIS, BASTROP, CALDWELL
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Hazardous Weather Conditions

No active alerts for CHEVY CHASE, MARYLAND

Current Conditions: CHEVY CHASE, MARYLAND

LEESBURG/GODFREY (KJYO)

Cloudy

57.2 F
Humidity:63%
Wind Speed:NW 11.4 G 19.7 mph
Barometer:29.88 in
Dewpoint:44.6 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
May 14 2026, 11:15 AM EDT
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5 Day Forecast for CHEVY CHASE, MARYLAND (20815)

Thursday

High 64 °F
Slight Chance of Rain Showers
Thursday
Night
Low 50 °F
Mostly Cloudy
Friday

High 73 °F
Partly Sunny
Friday
Night
Low 53 °F
Mostly Cloudy
Saturday

High 84 °F
Partly Sunny
Saturday
Night
Low 64 °F
Showers
Sunday

High 91 °F
Chance of T-storms
Sunday
Night
Low 66 °F
Mostly Cloudy
Monday

High 89 °F
Mostly Sunny

Observation History for CHEVY CHASE, MARYLAND


Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
11:15 AM EDT NW 11.4 G 19.7 10.00 Cloudy -- 57.2 44.6 63% NA NA 29.88 1011.9
10:55 AM EDT G 24.2 10.00 Mostly Cloudy -- 59.0 46.4 63% NA NA 29.88 1011.9
09:55 AM EDT 10.00 Mostly Cloudy -- 55.4 46.4 72% NA NA 29.88 1011.9
09:35 AM EDT NW 13.9 G 20.8 10.00 Partly Cloudy -- 55.4 46.4 72% NA NA 29.88 1011.9
09:15 AM EDT G 23.0 10.00 Clear -- 55.4 46.4 72% NA NA 29.87 1011.5
08:55 AM EDT G 20.8 10.00 Partly Cloudy -- 55.4 48.2 77% NA NA 29.87 1011.5
08:35 AM EDT 10.3 10.00 Partly Cloudy -- 53.6 48.2 82% NA NA 29.87 1011.5
08:15 AM EDT 8.1 10.00 Clear -- 53.6 50.0 88% NA NA 29.87 1011.5
07:55 AM EDT 10.3 10.00 Partly Cloudy -- 53.6 50.0 88% NA NA 29.86 1011.2
07:35 AM EDT NW 9.2 10.00 Mostly Cloudy -- 51.8 50.0 94% NA NA 29.86 1011.2
07:15 AM EDT 3.4 10.00 Partly Cloudy -- 50.0 50.0 100% NA NA 29.85 1010.8
06:55 AM EDT 3.4 10.00 Mostly Cloudy -- 50.0 50.0 100% NA NA 29.85 1010.8
06:35 AM EDT 3.4 10.00 Cloudy -- 51.8 51.8 100% NA NA 29.84 1010.5
06:15 AM EDT 3.4 10.00 Mostly Cloudy -- 50.0 50.0 100% NA NA 29.83 1010.2
05:55 AM EDT NW 4.7 10.00 Partly Cloudy -- 50.0 50.0 100% NA NA 29.82 1009.8
05:35 AM EDT 3.4 10.00 Mostly Cloudy -- 51.8 51.8 100% NA NA 29.81 1009.5
05:15 AM EDT NW 5.8 7.00 Partly Cloudy -- 50.0 50.0 100% NA NA 29.82 1009.8
04:55 AM EDT 0.0 10.00 Partly Cloudy -- 51.8 51.8 100% NA NA 29.81 1009.5
04:35 AM EDT 0.0 10.00 Mostly Cloudy -- 53.6 53.6 100% NA NA 29.81 1009.5
04:15 AM EDT 0.0 10.00 Cloudy -- 53.6 53.6 100% NA NA 29.81 1009.5
03:55 AM EDT NE 3.4 10.00 Cloudy -- 53.6 53.6 100% NA NA 29.81 1009.5
03:35 AM EDT 5.8 10.00 Light Rain -- 53.6 53.6 100% NA NA 29.81 1009.5
03:15 AM EDT 6.9 10.00 Cloudy -- 53.6 53.6 100% NA NA 29.81 1009.5
02:55 AM EDT 6.9 10.00 Light Rain -- 53.6 53.6 100% NA NA 29.82 1009.8

Regional Weather Observation

LEESBURG/GODFREY (KJYO)

Cloudy
57.2 F

FREDERICK (KFDK)

Mostly Cloudy
59.0 F

CARROLL CNTY (KDMW)

Cloudy
57.2 F

NSF THURMONT (KRSP)

NULL
48.0 F

WASH DC/DULLES (KIAD)

Partly Cloudy
60.8 F

WASHINGTON/NATL (KDCA)

Mostly Cloudy
60.8 F
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