Calvert County, Maryland, United States

Last updated: 10:24 PM CDT  ·  Refresh
22°C
Feels like 23°
Mostly Clear
▲ 31°  /  ▼ 19°
Wind
10 mph N
Humidity
89%
Dew Point
20°
Pressure
29.89 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
29%
Sunrise
6:24 AM
Sunset
7:53 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Calvert County is currently mostly clear at 22°C. Precipitation is likely — peak probability 62% around 11 PM. Sunrise: 6:24AM · Sunset: 7:53PM.

Alerts

No active alerts for this location.
39 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
13%
12 AM
22°
31%
1 AM
22°
31%
2 AM
21°
11%
3 AM
21°
11%
4 AM
21°
11%
5 AM
20°
3%
6 AM
19°
3%
7 AM
19°
3%
8 AM
20°
3%
9 AM
21°
3%
10 AM
22°
3%
11 AM
23°
3%
12 PM
23°
3%
1 PM
26°
3%
2 PM
26°
19%
3 PM
26°
23%
4 PM
26°
24%
5 PM
27°
24%
6 PM
26°
33%
7 PM
26°
33%
8 PM
26°
40%
9 PM
24°
45%
10 PM
24°
45%
7-Day Forecast
Tonight
31° 19°
Mostly Clear.
Fri
27° 19°
Partly Cloudy with a 62% chance of rain.
Sat
25° 21°
Rain, 90% chance.
Sun
30° 21°
Partly Cloudy with a 46% chance of rain.
Mon
29° 19°
Clear with a 21% chance of rain.
Tue
27° 18°
Rain, 61% chance.
Wed
28° 19°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 22° Mostly Clear 13% 10 mph N 89%
12 AM 22° Partly Cloudy 31% 11 mph N 87%
1 AM 22° Partly Cloudy 31% 12 mph N 85%
2 AM 21° Partly Cloudy 11% 12 mph N 84%
3 AM 21° Partly Cloudy 11% 11 mph N 85%
4 AM 21° Mostly Cloudy 11% 10 mph N 86%
5 AM 20° Overcast 3% 10 mph N 87%
6 AM 19° Overcast 3% 10 mph N 87%
7 AM 19° Mostly Cloudy 3% 10 mph N 87%
8 AM 20° Mostly Cloudy 3% 11 mph N 85%
9 AM 21° Mostly Cloudy 3% 10 mph N 81%
10 AM 22° Mostly Cloudy 3% 10 mph N 78%
11 AM 23° Partly Cloudy 3% 9 mph N 74%
12 PM 23° Partly Cloudy 3% 8 mph NNE 71%
1 PM 26° Partly Cloudy 3% 8 mph NNE 68%
2 PM 26° Partly Cloudy 19% 7 mph NNE 65%
3 PM 26° Partly Cloudy 23% 6 mph NNE 65%
4 PM 26° Mostly Clear 24% 6 mph NNE 64%
5 PM 27° Mostly Clear 24% 5 mph NNE 64%
6 PM 26° Mostly Clear 33% 5 mph NNE 65%
7 PM 26° Mostly Clear 33% 5 mph NE 66%
8 PM 26° Partly Cloudy 40% 5 mph ENE 68%
9 PM 24° Partly Cloudy 45% 5 mph ENE 71%
10 PM 24° Partly Cloudy 45% 6 mph E 74%
15-Day Forecast
Today
8/20
Mostly Clear
13%
19°
31°
Fri
8/21
Partly Cloudy
62%
19°
27°
Sat
8/22
Rain
90%
21°
25°
Sun
8/23
Partly Cloudy
46%
21°
30°
Mon
8/24
Clear
21%
19°
29°
Tue
8/25
Rain
61%
18°
27°
Wed
8/26
Rain
82%
19°
28°
Thu
8/27
Rain
90%
21°
27°
Fri
8/28
Rain
68%
20°
29°
Sat
8/29
Rain
68%
20°
30°
Sun
8/30
Drizzle
60%
20°
31°
Mon
8/31
Drizzle
60%
20°
31°
Tue
9/1
Drizzle
60%
19°
27°
Wed
9/2
Drizzle
60%
19°
27°
Thu
9/3
Drizzle
60%
19°
27°
39
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
39 AQI 7.1 µg/m³
O3
Ground-level ozone
Dominant
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 39 Good 39 39
Sat 32 Good 32 23
Sun 35 Good 35 11
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 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE23 J/kg
MLCAPE13 J/kg
MUCAPE23 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index1.7
Kinematics
0–6 km Shear29 kt
0–1 km Shear7 kt
Eff. Shear—
0–1 km SRH-45
0–3 km SRH-19
Eff. SRH—
Storm Motion299° @ 29 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index26.6
Thermo & Levels
PWAT1.55 in
0–3 km LR4.4 °C/km
700–500 LR5.4 °C/km
Total Totals39.5
LCL983 hPa
LFC1012 hPa
EL922 hPa
Freezing Lvl15,315 ft