Severe Thunderstorm Watch 12:00 AM

Charles County, Maryland, United States

Last updated: 11:49 PM CDT  ·  Refresh
22°C
Feels like 24°
Rain
▲ 29°  /  ▼ 19°
Wind
7 mph SW
Humidity
95%
Dew Point
21°
Pressure
29.65 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
93%
Sunrise
6:01 AM
Sunset
8:27 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Charles County is currently rain at 22°C. Precipitation is likely — peak probability 90% around 12 AM. Atmospheric instability is elevated (CAPE up to 1428 J/kg) — isolated convective development possible. Sunrise: 6:01AM · Sunset: 8:27PM.

Alerts

Severe Thunderstorm Watch
Expires 12:00 AM
39 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
90%
1 AM
23°
84%
2 AM
23°
64%
3 AM
23°
65%
4 AM
23°
57%
5 AM
21°
39%
6 AM
22°
27%
7 AM
23°
28%
8 AM
24°
28%
9 AM
26°
36%
10 AM
27°
52%
11 AM
27°
55%
12 PM
28°
45%
1 PM
28°
46%
2 PM
28°
46%
3 PM
28°
44%
4 PM
27°
51%
5 PM
28°
64%
6 PM
27°
60%
7 PM
25°
55%
8 PM
25°
52%
9 PM
25°
56%
10 PM
24°
57%
11 PM
24°
38%
7-Day Forecast
Today
29° 19°
Mostly Cloudy with a 90% chance of rain.
Thu
28° 17°
Partly Cloudy with a 38% chance of rain.
Fri
28° 17°
Partly Cloudy with a 36% chance of rain.
Sat
26° 18°
Overcast with a 45% chance of rain.
Sun
30° 18°
Rain, 70% chance.
Mon
33° 19°
Rain, 64% chance.
Tue
35° 19°
Thunderstorm, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 22° Rain 90% 7 mph SW 95%
1 AM 23° Heavy Rain 84% 7 mph SW 94%
2 AM 23° Overcast 64% 9 mph SW 96%
3 AM 23° Mostly Cloudy 65% 8 mph SW 96%
4 AM 23° Mostly Cloudy 57% 6 mph SSW 96%
5 AM 21° Partly Cloudy 39% 5 mph SSW 95%
6 AM 22° Mostly Cloudy 27% 6 mph SW 94%
7 AM 23° Partly Cloudy 28% 7 mph SW 92%
8 AM 24° Partly Cloudy 28% 7 mph WSW 86%
9 AM 26° Mostly Cloudy 36% 7 mph WSW 78%
10 AM 27° Mostly Cloudy 52% 8 mph WSW 70%
11 AM 27° Mostly Cloudy 55% 8 mph WSW 66%
12 PM 28° Mostly Cloudy 45% 8 mph WSW 62%
1 PM 28° Mostly Cloudy 46% 8 mph WSW 58%
2 PM 28° Mostly Cloudy 46% 6 mph WSW 58%
3 PM 28° Mostly Cloudy 44% 5 mph W 60%
4 PM 27° Rain 51% 5 mph W 62%
5 PM 28° Rain 64% 4 mph W 67%
6 PM 27° Mostly Cloudy 60% 3 mph W 74%
7 PM 25° Mostly Cloudy 55% 3 mph W 78%
8 PM 25° Mostly Cloudy 52% 3 mph WNW 78%
9 PM 25° Mostly Cloudy 56% 4 mph WNW 77%
10 PM 24° Rain 57% 4 mph NW 75%
11 PM 24° Mostly Cloudy 38% 4 mph NNW 72%
15-Day Forecast
Today
7/22
Mostly Cloudy
90%
19°
29°
Thu
7/23
Partly Cloudy
38%
17°
28°
Fri
7/24
Partly Cloudy
36%
17°
28°
Sat
7/25
Overcast
45%
18°
26°
Sun
7/26
Rain
70%
18°
30°
Mon
7/27
Rain
64%
19°
33°
Tue
7/28
Thunderstorm
71%
19°
35°
Wed
7/29
Rain
68%
18°
29°
Thu
7/30
Drizzle
44%
18°
29°
Fri
7/31
Drizzle
51%
17°
29°
Sat
8/1
Drizzle
60%
18°
29°
Sun
8/2
Drizzle
60%
19°
29°
Mon
8/3
Drizzle
60%
19°
31°
Tue
8/4
Drizzle
60%
20°
32°
Wed
8/5
Drizzle
60%
21°
31°
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
19 AQI 3.6 µg/m³
O3
Ground-level ozone
Dominant
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 39 Good 39 19
Thu 38 Good 38 16
Fri 42 Good 42 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. 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 Wed Jul 22, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE112 J/kg
MLCAPE247 J/kg
MUCAPE1178 J/kg
SBCIN-167 J/kg
MLCIN0 J/kg
Lifted Index-0.6
Kinematics
0–6 km Shear40 kt
0–1 km Shear27 kt
Eff. Shear40 kt
0–1 km SRH-36
0–3 km SRH-37
Eff. SRH-37
Storm Motion230° @ 35 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.4
Thermo & Levels
PWAT2.18 in
0–3 km LR4.5 °C/km
700–500 LR5.5 °C/km
Total Totals47.1
LCL992 hPa
LFC699 hPa
EL456 hPa
Freezing Lvl14,469 ft