Calvert County, Maryland, United States

Last updated: 5:05 PM CDT · Refresh

33°C

Feels like 39°

Mostly Clear

▲ 38° / ▼ 23°

Wind

6 mph SE

Humidity

61%

Dew Point

22°

Pressure

29.80 inHg

Visibility

10 mi

UV Index

5.4

Cloud Cover

29%

Sunrise

5:47 AM

Sunset

8:33 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Calvert County is currently mostly clear at 33°C. Precipitation is likely — peak probability 73% around 7 PM. Atmospheric instability is elevated (CAPE up to 1976 J/kg) — isolated convective development possible. Sunrise: 5:47AM · Sunset: 8:33PM.

77 AQI · Moderate Dominant: O3 Air Quality

Hourly Forecast · Next 24 Hours

Now

33°

59%

7 PM

32°

73%

8 PM

29°

54%

9 PM

28°

57%

10 PM

27°

45%

11 PM

27°

41%

12 AM

27°

40%

1 AM

26°

38%

2 AM

25°

19%

3 AM

24°

19%

4 AM

24°

19%

5 AM

24°

6 AM

23°

7 AM

24°

8 AM

24°

9 AM

26°

14%

10 AM

27°

23%

11 AM

27°

24%

12 PM

28°

24%

1 PM

30°

25%

2 PM

32°

25%

3 PM

32°

25%

4 PM

32°

29%

5 PM

32°

44%

7-Day Forecast

Tonight

38° 23°

Mostly Clear with a 59% chance of rain.

Sun

32° 23°

Mostly Clear with a 50% chance of rain.

Mon

29° 22°

Mostly Cloudy with a 70% chance of rain.

Tue

28° 21°

Rain, 70% chance.

Wed

28° 20°

Partly Cloudy with a 21% chance of rain.

Thu

32° 21°

Rain, 70% chance.

Fri

33° 22°

Rain, 90% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 33° Mostly Clear 59% 6 mph SE 61%

7 PM 32° Partly Cloudy 73% 5 mph SSE 68%

8 PM 29° Mostly Cloudy 54% 8 mph SE 76%

9 PM 28° Overcast 57% 6 mph SE 78%

10 PM 27° Overcast 45% 5 mph S 79%

11 PM 27° Overcast 41% 7 mph W 81%

12 AM 27° Overcast 40% 6 mph WNW 83%

1 AM 26° Overcast 38% 6 mph NW 83%

2 AM 25° Overcast 19% 7 mph NW 84%

3 AM 24° Mostly Cloudy 19% 5 mph NW 86%

4 AM 24° Partly Cloudy 19% 4 mph W 87%

5 AM 24° Partly Cloudy 8% 5 mph S 88%

6 AM 23° Partly Cloudy 8% 5 mph S 87%

7 AM 24° Partly Cloudy 5% 5 mph S 86%

8 AM 24° Mostly Clear 5% 5 mph S 83%

9 AM 26° Mostly Clear 14% 5 mph SSE 79%

10 AM 27° Mostly Clear 23% 5 mph SSE 75%

11 AM 27° Mostly Clear 24% 5 mph SE 72%

12 PM 28° Mostly Clear 24% 5 mph SE 70%

1 PM 30° Mostly Clear 25% 6 mph SE 68%

2 PM 32° Mostly Clear 25% 6 mph SE 66%

3 PM 32° Mostly Clear 25% 7 mph SE 66%

4 PM 32° Mostly Clear 29% 7 mph SE 65%

5 PM 32° Mostly Clear 44% 8 mph SE 65%

15-Day Forecast

Today

7/4

Mostly Clear

59%

23°

38°

Sun

7/5

Mostly Clear

50%

23°

32°

Mon

7/6

Mostly Cloudy

70%

22°

29°

Tue

7/7

Rain

70%

21°

28°

Wed

7/8

Partly Cloudy

21%

20°

28°

Thu

7/9

Rain

70%

21°

32°

Fri

7/10

Rain

90%

22°

33°

Sat

7/11

Rain

69%

22°

31°

Sun

7/12

Rain

69%

21°

29°

Mon

7/13

Rain

68%

20°

29°

Tue

7/14

Rain

64%

20°

28°

Wed

7/15

Drizzle

60%

20°

28°

Thu

7/16

Drizzle

60%

21°

30°

Fri

7/17

Drizzle

60%

21°

29°

Sat

7/18

Drizzle

60%

21°

29°

Moderate

U.S. Air Quality Index · Dominant: O3

50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today

PM_2.5

Fine particulate matter

64 AQI 16.1 µg/m³

O₃

Ground-level ozone

Dominant

77 AQI 63 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Sun 77 Moderate 77 64

Mon 53 Moderate 46 53

Tue 45 Good 45 43

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. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Sat Jul 4, 20:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE2107 J/kg

MLCAPE2763 J/kg

MUCAPE3031 J/kg

SBCIN-267 J/kg

MLCIN0 J/kg

Lifted Index-6.0

Kinematics

0–6 km Shear23 kt

0–1 km Shear13 kt

Eff. Shear14 kt

0–1 km SRH-21

0–3 km SRH-52

Eff. SRH-43

Storm Motion205° @ 23 kt

0–1 km EHI-0.3

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index37.9

Thermo & Levels

PWAT1.99 in

0–3 km LR7.1 °C/km

700–500 LR6.4 °C/km

Total Totals53.8

LCL859 hPa

LFC745 hPa

EL170 hPa

Freezing Lvl14,849 ft

Calvert County, Maryland, United States

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