Small Craft Advisory — Chesapeake Bay north of Pooles Island MD, AN, Chesapeake Bay from Pooles Island to Sandy Point MD, AN, Chesapeake Bay from Sandy Point to North Beach MD, AN, Chesapeake Bay from North Beach to Drum Point MD, AN, Chesapeake Bay from Drum Point MD to Smith Point VA, AN, Tidal Potomac from Key Bridge to Indian Head MD, AN, Tidal Potomac from Indian Head to Cobb Island MD, AN, Tidal Potomac from Cobb Island MD to Smith Point VA, AN, Patapsco River including Baltimore Harbor, AN, Chester River to Queenstown MD, AN, Eastern Bay, AN, Choptank River to Cambridge MD and the Little Choptank River, AN, Patuxent River to Broomes Island MD, AN, Tangier Sound and the inland waters surrounding Bloodsworth Island, AN 11:00 PM

Somerset County, Maryland, United States

Last updated: 10:26 PM CDT  ·  Refresh
24°C
Feels like 26°
Fog
▲ 31°  /  ▼ 20°
Wind
11 mph NW
Humidity
85%
Dew Point
23°
Pressure
29.98 inHg
Visibility
0 mi
UV Index
0.0
Cloud Cover
89%
Sunrise
6:23 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Somerset County is currently fog at 24°C. Precipitation is likely — peak probability 60% around 11 PM. Sunrise: 6:23AM · Sunset: 7:50PM.

48 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
60%
12 AM
25°
41%
1 AM
24°
27%
2 AM
23°
9%
3 AM
22°
10%
4 AM
22°
11%
5 AM
20°
4%
6 AM
20°
4%
7 AM
20°
4%
8 AM
20°
5%
9 AM
20°
5%
10 AM
21°
5%
11 AM
22°
5%
12 PM
23°
5%
1 PM
25°
5%
2 PM
26°
14%
3 PM
26°
23%
4 PM
26°
24%
5 PM
27°
24%
6 PM
27°
25%
7 PM
27°
28%
8 PM
26°
29%
9 PM
24°
38%
10 PM
24°
39%
7-Day Forecast
Tonight
31° 20°
Fog with a 60% chance of rain.
Fri
27° 20°
Partly Cloudy with a 58% chance of rain.
Sat
27° 22°
Heavy Rain, 90% chance.
Sun
29° 22°
Partly Cloudy with a 69% chance of rain.
Mon
27° 21°
Rain, 43% chance.
Tue
27° 21°
Rain, 70% chance.
Wed
28° 21°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Fog 60% 11 mph NW 85%
12 AM 25° Mostly Cloudy 41% 13 mph NNW 86%
1 AM 24° Mostly Cloudy 27% 16 mph NNW 88%
2 AM 23° Partly Cloudy 9% 16 mph NNW 90%
3 AM 22° Mostly Cloudy 10% 15 mph N 90%
4 AM 22° Mostly Cloudy 11% 14 mph N 90%
5 AM 20° Mostly Cloudy 4% 13 mph N 90%
6 AM 20° Mostly Cloudy 4% 13 mph N 90%
7 AM 20° Mostly Cloudy 4% 12 mph N 89%
8 AM 20° Mostly Cloudy 5% 12 mph N 87%
9 AM 20° Mostly Cloudy 5% 10 mph N 84%
10 AM 21° Partly Cloudy 5% 9 mph N 80%
11 AM 22° Partly Cloudy 5% 8 mph N 77%
12 PM 23° Partly Cloudy 5% 8 mph NNW 75%
1 PM 25° Mostly Clear 5% 7 mph NNW 72%
2 PM 26° Mostly Clear 14% 6 mph NW 71%
3 PM 26° Mostly Clear 23% 5 mph NNW 71%
4 PM 26° Mostly Clear 24% 5 mph N 71%
5 PM 27° Mostly Clear 24% 6 mph NE 72%
6 PM 27° Mostly Clear 25% 7 mph ENE 73%
7 PM 27° Mostly Clear 28% 8 mph ENE 74%
8 PM 26° Mostly Clear 29% 8 mph ENE 76%
9 PM 24° Partly Cloudy 38% 8 mph ENE 77%
10 PM 24° Partly Cloudy 39% 8 mph E 78%
15-Day Forecast
Today
8/20
Fog
60%
20°
31°
Fri
8/21
Partly Cloudy
58%
20°
27°
Sat
8/22
Heavy Rain
90%
22°
27°
Sun
8/23
Partly Cloudy
69%
22°
29°
Mon
8/24
Rain
43%
21°
27°
Tue
8/25
Rain
70%
21°
27°
Wed
8/26
Rain
82%
21°
28°
Thu
8/27
Rain
82%
22°
28°
Fri
8/28
Rain
68%
22°
29°
Sat
8/29
Rain
68%
22°
29°
Sun
8/30
Drizzle
60%
21°
30°
Mon
8/31
Drizzle
60%
21°
28°
Tue
9/1
Drizzle
60%
21°
26°
Wed
9/2
Drizzle
60%
20°
26°
Thu
9/3
Drizzle
60%
21°
26°
48
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
41 AQI 7.3 µg/m³
O3
Ground-level ozone
Dominant
48 AQI 52 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 48 Good 48 41
Sat 35 Good 35 26
Sun 43 Good 43 13
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Fri Aug 21, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE669 J/kg
MLCAPE19 J/kg
MUCAPE669 J/kg
SBCIN-26 J/kg
MLCIN0 J/kg
Lifted Index-1.7
Kinematics
0–6 km Shear30 kt
0–1 km Shear8 kt
Eff. Shear31 kt
0–1 km SRH-30
0–3 km SRH9
Eff. SRH9
Storm Motion282° @ 32 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.1
K-Index31.6
Thermo & Levels
PWAT1.80 in
0–3 km LR5.3 °C/km
700–500 LR4.8 °C/km
Total Totals40.8
LCL992 hPa
LFC813 hPa
EL246 hPa
Freezing Lvl15,361 ft