Saint Marys Beach, Maryland

Last updated: 10:35 PM CDT · Refresh

23°C

Feels like 24°

Rain

▲ 31° / ▼ 21°

Wind

11 mph SW

Humidity

94%

Dew Point

22°

Pressure

29.72 inHg

Visibility

5 mi

UV Index

0.0

Cloud Cover

99%

Sunrise

5:59 AM

Sunset

8:25 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Saint Marys Beach is currently rain at 23°C. Precipitation is likely — peak probability 90% around 11 PM. Atmospheric instability is elevated (CAPE up to 1647 J/kg) — isolated convective development possible. Sunrise: 5:59AM · Sunset: 8:25PM.

41 AQI · Good Dominant: O3 Air Quality

Hourly Forecast · Next 24 Hours

Now

23°

90%

12 AM

23°

90%

1 AM

23°

84%

2 AM

23°

65%

3 AM

23°

65%

4 AM

23°

54%

5 AM

22°

32%

6 AM

23°

40%

7 AM

23°

28%

8 AM

24°

29%

9 AM

26°

43%

10 AM

27°

52%

11 AM

28°

61%

12 PM

28°

54%

1 PM

29°

62%

2 PM

29°

75%

3 PM

29°

75%

4 PM

29°

75%

5 PM

28°

75%

6 PM

27°

75%

7 PM

26°

71%

8 PM

26°

71%

9 PM

26°

76%

10 PM

25°

67%

7-Day Forecast

Tonight

31° 21°

Rain, 90% chance.

Wed

29° 21°

Mostly Cloudy with a 75% chance of rain.

Thu

26° 19°

Mostly Clear.

Fri

27° 19°

Mostly Cloudy with a 37% chance of rain.

Sat

24° 19°

Overcast with a 37% chance of rain.

Sun

28° 19°

Rain, 70% chance.

Mon

31° 20°

Rain, 64% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 23° Rain 90% 11 mph SW 94%

12 AM 23° Rain 90% 11 mph SW 93%

1 AM 23° Rain 84% 12 mph SW 92%

2 AM 23° Rain 65% 11 mph SW 93%

3 AM 23° Mostly Cloudy 65% 9 mph SSW 94%

4 AM 23° Partly Cloudy 54% 9 mph SSW 95%

5 AM 22° Mostly Cloudy 32% 9 mph SSW 93%

6 AM 23° Mostly Cloudy 40% 10 mph SW 91%

7 AM 23° Mostly Cloudy 28% 10 mph SW 90%

8 AM 24° Mostly Cloudy 29% 11 mph SW 86%

9 AM 26° Mostly Cloudy 43% 10 mph WSW 80%

10 AM 27° Mostly Cloudy 52% 10 mph WSW 74%

11 AM 28° Heavy Rain 61% 10 mph WSW 69%

12 PM 28° Heavy Rain 54% 9 mph WSW 66%

1 PM 29° Heavy Rain 62% 9 mph WSW 62%

2 PM 29° Mostly Cloudy 75% 8 mph WSW 61%

3 PM 29° Mostly Cloudy 75% 7 mph WSW 62%

4 PM 29° Mostly Cloudy 75% 6 mph SW 64%

5 PM 28° Mostly Cloudy 75% 5 mph SW 70%

6 PM 27° Mostly Cloudy 75% 4 mph SW 77%

7 PM 26° Mostly Cloudy 71% 4 mph WSW 83%

8 PM 26° Mostly Cloudy 71% 4 mph W 85%

9 PM 26° Mostly Cloudy 76% 4 mph W 86%

10 PM 25° Rain 67% 4 mph WNW 86%

15-Day Forecast

Today

7/21

Rain

90%

21°

31°

Wed

7/22

Mostly Cloudy

75%

21°

29°

Thu

7/23

Mostly Clear

16%

19°

26°

Fri

7/24

Mostly Cloudy

37%

19°

27°

Sat

7/25

Overcast

37%

19°

24°

Sun

7/26

Rain

70%

19°

28°

Mon

7/27

Rain

64%

20°

31°

Tue

7/28

Thunderstorm

71%

20°

32°

Wed

7/29

Rain

69%

19°

28°

Thu

7/30

Drizzle

44%

19°

27°

Fri

7/31

Drizzle

60%

18°

28°

Sat

8/1

Drizzle

60%

19°

28°

Sun

8/2

Drizzle

60%

20°

26°

Mon

8/3

Drizzle

60%

21°

28°

Tue

8/4

Drizzle

60%

22°

29°

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

PM_2.5

Fine particulate matter

19 AQI 3.4 µg/m³

O₃

Ground-level ozone

Dominant

41 AQI 45 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 41 Good 41 19

Thu 40 Good 40 20

Fri 38 Good 38 22

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 Wed Jul 22, 02:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE367 J/kg

MLCAPE486 J/kg

MUCAPE673 J/kg

SBCIN-62 J/kg

MLCIN0 J/kg

Lifted Index-1.4

Kinematics

0–6 km Shear35 kt

0–1 km Shear23 kt

Eff. Shear35 kt

0–1 km SRH-67

0–3 km SRH-87

Eff. SRH-87

Storm Motion231° @ 37 kt

0–1 km EHI-0.2

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index36.6

Thermo & Levels

PWAT2.28 in

0–3 km LR5.0 °C/km

700–500 LR5.0 °C/km

Total Totals44.9

LCL990 hPa

LFC800 hPa

EL332 hPa

Freezing Lvl14,692 ft

Saint Marys Beach, Maryland

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