Tall Timbers, MD
07/17/2026 04:00 AM
81°F
TEMPERATURE
Winds 9 mph N
Areas Of Smoke
Areas of smoke. Mostly clear, with a low around 79. North wind around 9 mph.

Alerts

You have (2) alert(s). Tap to see details.

Air Quality Alert

Unknown
Air Quality Alert issued July 16 at 5:10PM EDT by NWS Baltimore MD/Washington DC
NWS Baltimore MD/Washington DC
Category Certainty Severity
Met Unknown Unknown
Status Urgency Category
Actual Unknown Met
Effective Ends Expires
07/16/2026 05:10 PM 07/17/2026 04:09 AM 07/18/2026 12:00 AM 
The Maryland Department of the Environment has issued a Code
RED Air Quality Alert Friday for Southern Maryland.

A Code Red Air Quality Alert means that air pollution
concentrations within the region are unhealthy for the general
population. 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 the web site
mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx

Air Quality Alert

Unknown
Air Quality Alert issued July 16 at 4:40PM EDT by NWS Baltimore MD/Washington DC
NWS Baltimore MD/Washington DC
Category Certainty Severity
Met Unknown Unknown
Status Urgency Category
Actual Unknown Met
Effective Ends Expires
07/16/2026 04:40 PM 07/17/2026 04:09 AM 07/18/2026 12:00 AM 
The Maryland Department of the Environment has issued a Code
RED Air Quality Alert Friday for Southern Maryland.

A Code Red Air Quality Alert means that air pollution
concentrations within the region are unhealthy for the general
population. 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 the web site
mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx
Moonrise
10:37 AM
Moonset
11:39 PM
Sunrise
05:56 AM
Moon Phase
Waxing crescent
Sunset
08:28 PM

Hourly Forecast

Fri, 04:00 AM

Areas Of Smoke
Winds: 9 mph N
81°

Fri, 05:00 AM

Areas Of Smoke
Winds: 9 mph N
80°

Fri, 06:00 AM

Smoke
Winds: 8 mph NE
79°

Fri, 07:00 AM

Smoke
Winds: 8 mph NE
80°

Fri, 08:00 AM

Smoke
Winds: 8 mph NE
81°

Fri, 09:00 AM

Smoke
Winds: 8 mph NE
82°

Fri, 10:00 AM

Smoke
Winds: 7 mph NE
81°

Fri, 11:00 AM

Smoke
Winds: 6 mph NE
81°

Fri, 12:00 PM

Smoke
Winds: 5 mph NE
82°

Fri, 01:00 PM

Smoke
Winds: 3 mph NE
83°

Fri, 02:00 PM

Smoke
Winds: 3 mph E
84°

Fri, 03:00 PM

Smoke
Winds: 5 mph SE
86°

Fri, 04:00 PM

Smoke
Winds: 5 mph SE
87°

Fri, 05:00 PM

Smoke
Winds: 6 mph SE
87°

Fri, 06:00 PM

Smoke
Winds: 6 mph SE
88°

Fri, 07:00 PM

Smoke
Winds: 7 mph SE
86°

Fri, 08:00 PM

Smoke
Winds: 7 mph SE
85°

Fri, 09:00 PM

Smoke
Winds: 7 mph SE
84°

Fri, 10:00 PM

Areas Of Smoke
Winds: 8 mph SE
81°

Fri, 11:00 PM

Areas Of Smoke
Winds: 8 mph SE
81°

Sat, 12:00 AM

Patchy Smoke
Winds: 7 mph SE
81°

Sat, 01:00 AM

Patchy Smoke
Winds: 7 mph SE
81°

Sat, 02:00 AM

Patchy Smoke
Winds: 6 mph SE
80°

Sat, 03:00 AM

Patchy Smoke
Winds: 6 mph SE
80°

Overnight

Areas Of Smoke
79°
Winds: 9 mph N
Areas of smoke. Mostly clear, with a low around 79. North wind around 9 mph.

Friday

Smoke
88°
Winds: 3 to 8 mph E
Smoke. Mostly sunny, with a high near 88. East wind 3 to 8 mph.

Friday Night

Smoke
78°
Winds: 8 mph SE
Smoke before 4am. Partly cloudy, with a low around 78. Southeast wind around 8 mph.

Saturday

Partly Sunny then Chance Showers And Thunderstorms
90°
Winds: 6 to 16 mph S
A chance of showers and thunderstorms between 2pm and 5pm, then showers and thunderstorms likely. Partly sunny, with a high near 90. Heat index values as high as 100. South wind 6 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

Saturday Night

Showers And Thunderstorms Likely
78°
Winds: 8 to 16 mph SW
Showers and thunderstorms likely before 2am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Southwest wind 8 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

Sunday

Chance Showers And Thunderstorms
85°
Winds: 8 mph NW
A slight chance of rain showers before 11am, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.

Sunday Night

Chance Showers And Thunderstorms then Partly Cloudy
74°
Winds: 7 mph NE
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. Chance of precipitation is 40%.

Monday

Sunny
81°
Winds: 6 to 9 mph E
Sunny, with a high near 81.

Monday Night

Partly Cloudy then Chance Showers And Thunderstorms
76°
Winds: 5 to 12 mph S
A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 76. Chance of precipitation is 30%.

Tuesday

Chance Showers And Thunderstorms
86°
Winds: 5 to 16 mph S
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.

Tuesday Night

Chance Showers And Thunderstorms
78°
Winds: 12 to 16 mph SW
A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Chance of precipitation is 50%.

Wednesday

Chance Showers And Thunderstorms
84°
Winds: 12 mph W
A chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.

Wednesday Night

Chance Showers And Thunderstorms
73°
Winds: 9 mph N
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 40%.

Thursday

Slight Chance Rain Showers then Mostly Sunny
80°
Winds: 9 mph N
A slight chance of rain showers before 8am. Mostly sunny, with a high near 80.

Coastal Waters Forecast

National Weather Service Baltimore MD/Washington DC

FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY.

Tidal Potomac River and Maryland portion of Chesapeake Bay. Forecasts of wave heights do not include effects of wind direction relative to tidal currents. Expect higher waves when winds are blowing against the tidal flow. Waves flat where waters are iced over. A weak front will stall over the southern Chesapeake Bay today, then return northward as a warm front Friday night into Saturday morning. A stronger cold front will drop through the region Saturday night into Sunday. High pressure will build north of the area Monday. Small Craft Advisories may be needed for portions of the waters Friday night through Saturday night and again Monday night into Tuesday.

Tidal Potomac from Key Bridge to Indian Head

OVERNIGHT
N winds 5 kt Waves less than 1 ft Smoke
FRI
N winds around 5 kt Waves 1 ft Smoke
FRI NIGHT
SE winds around 5 kt Waves 1 ft Smoke
SAT
S winds 5 to 10 kt with gusts to 20 kt Waves 1 ft Showers and tstms likely Patchy smoke
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
SUN
NW winds 5 to 10 kt Waves 1 ft
SUN NIGHT
NE winds around 5 kt Waves 1 ft
MON
SE winds around 5 kt Waves 1 ft
TUE
SW winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms through the night
Reporting time 02:28 AM EDT Fri Jul 17 2026

Tidal Potomac from Indian Head to Cobb Island

OVERNIGHT
N winds 5 to 10 kt Waves 1 ft Areas of smoke
FRI
NE winds 5 to 10 kt
FRI NIGHT
SE winds around 5 kt Waves 1 ft Smoke
SAT
S winds around 5 kt
SAT NIGHT
SW winds 10 to 15 kt Gusts up to 20 kt in the evening Waves 1 ft Showers likely with a chance of tstms
SUN
NW winds 5 to 10 kt Waves 1 ft A chance of showers
SUN NIGHT
NE winds around 5 kt Waves 1 ft
MON
E winds 5 to 10 kt
TUE
SW winds 10 to 15 kt Waves 1 ft A chance of showers and tstms through the night
Reporting time 02:28 AM EDT Fri Jul 17 2026

Tidal Potomac from Cobb Island to Smith Point

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING
Reporting time 02:28 AM EDT Fri Jul 17 2026

Chesapeake Bay north of Pooles Island

OVERNIGHT
N winds 10 kt Waves 1 ft Smoke
FRI
N winds 5 to 10 kt
FRI NIGHT
SE winds 5 to 10 kt Waves 1 ft Smoke
SAT
S winds 5 to 10 kt with gusts to 20 kt Waves 1 ft Showers with a chance of tstms Areas of smoke
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
SUN
NW winds 5 to 10 kt Waves 1 ft
SUN NIGHT
N winds 5 to 10 kt Waves 1 ft
MON
E winds 5 to 10 kt
TUE
S winds 10 to 15 kt Waves 1 to 2 ft A chance of showers and tstms in the afternoon Showers likely with a chance of tstms through the night
Reporting time 02:28 AM EDT Fri Jul 17 2026

Chesapeake Bay from Pooles Island to Sandy Point

OVERNIGHT
N winds 10 kt Waves 2 ft Smoke
FRI
NE winds 5 to 10 kt
FRI NIGHT
S winds 5 to 10 kt Waves 1 ft or less Smoke
SAT
S winds 5 to 10 kt with gusts to 20 kt Waves 1 to 2 ft Showers with a chance of tstms Patchy smoke
SAT NIGHT
SW winds 10 kt Waves 1 ft Showers likely with a chance of tstms
SUN
NW winds 10 kt Waves 1 ft
SUN NIGHT
NE winds 5 to 10 kt Waves 1 ft
MON
E winds 5 to 10 kt
TUE
S winds 10 to 15 kt Waves 1 to 2 ft A chance of showers and tstms in the afternoon Showers likely with a chance of tstms through the night
Reporting time 02:28 AM EDT Fri Jul 17 2026

Patapsco River including Baltimore Harbor

OVERNIGHT
N winds 10 kt Waves 1 ft Smoke
FRI
NE winds 5 kt Waves less than 1 ft Smoke
FRI NIGHT
S winds 5 kt Waves flat Smoke
SAT
S winds 5 to 10 kt Waves 1 ft Showers with a chance of tstms Areas of smoke
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
SUN
NW winds 5 to 10 kt Waves 1 ft
SUN NIGHT
NE winds 5 kt Waves less than 1 ft
MON
E winds 5 kt
TUE
S winds 10 to 15 kt Waves 1 ft A chance of showers and tstms in the afternoon Showers likely with a chance of tstms through the night
Reporting time 02:28 AM EDT Fri Jul 17 2026

Chester River to Queenstown MD

OVERNIGHT
N winds 10 kt Waves 1 ft Smoke
FRI
N winds 5 to 10 kt
FRI NIGHT
SE winds 5 to 10 kt Waves 1 ft or less Smoke
SAT
S winds 5 to 10 kt with gusts to 20 kt Waves 1 ft Showers with a chance of tstms Patchy smoke
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft Showers with a chance of tstms
SUN
NW winds 5 to 10 kt Waves 1 ft
SUN NIGHT
NE winds 5 to 10 kt Waves 1 ft
MON
E winds 5 to 10 kt
TUE
S winds 10 to 15 kt Waves 1 to 2 ft A chance of showers and tstms in the afternoon Showers likely with a chance of tstms through the night
Reporting time 02:28 AM EDT Fri Jul 17 2026

Chesapeake Bay from Sandy Point to North Beach

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING
Reporting time 02:28 AM EDT Fri Jul 17 2026

Eastern Bay

OVERNIGHT
N winds 10 kt Waves 1 ft Smoke
FRI
N winds 5 to 10 kt Waves 1 ft or less Smoke
FRI NIGHT
SE winds 5 to 10 kt Waves 1 ft or less Smoke
SAT
S winds 5 to 10 kt Waves 1 ft Showers with a chance of tstms Patchy smoke
SAT NIGHT
SW winds 10 kt Waves 1 ft Showers with a chance of tstms
SUN
NW winds 5 to 10 kt Waves 1 ft
SUN NIGHT
NE winds 5 to 10 kt Waves 1 ft
MON
E winds 5 to 10 kt
TUE
S winds 10 to 15 kt Waves 1 to 2 ft Showers likely with a chance of tstms through the night
Reporting time 02:28 AM EDT Fri Jul 17 2026

Chesapeake Bay from North Beach to Drum Point

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING
Reporting time 02:28 AM EDT Fri Jul 17 2026

Choptank River to Cambridge MD and the Little Choptank River

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING
Reporting time 02:28 AM EDT Fri Jul 17 2026

Patuxent River to Broomes Island MD

OVERNIGHT
N winds 10 kt Waves 1 ft Areas of smoke
FRI
NE winds 5 to 10 kt Waves 1 ft Smoke
FRI NIGHT
SE winds 5 kt Waves less than 1 ft Smoke
SAT
S winds 10 to 15 kt Gusts up to 20 kt in the afternoon Waves 1 ft A chance of showers and tstms
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
SUN
NW winds 5 to 10 kt Waves 1 ft A chance of showers and tstms
SUN NIGHT
NE winds around 5 kt Waves 1 ft
MON
E winds 5 to 10 kt
TUE
S winds 10 to 15 kt Waves 1 ft A chance of showers and tstms
Reporting time 02:28 AM EDT Fri Jul 17 2026

Chesapeake Bay from Drum Point to Smith Point

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING
Reporting time 02:28 AM EDT Fri Jul 17 2026

Tangier Sound and the inland waters surrounding Bloodsworth Island

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING
Reporting time 02:28 AM EDT Fri Jul 17 2026
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