Severe Thunderstorm Watch 9:00 PM Severe Thunderstorm Watch 9:00 PM

Cape Girardeau County, Missouri, United States

Last updated: 8:39 PM CDT  ·  Refresh
28°C
Feels like 31°
Mostly Clear
▲ 34°  /  ▼ 18°
Wind
8 mph N
Humidity
75%
Dew Point
23°
Pressure
29.33 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
28%
Sunrise
5:54 AM
Sunset
8:15 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cape Girardeau County is currently mostly clear at 28°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1284 J/kg) — isolated convective development possible. Sunrise: 5:54AM · Sunset: 8:15PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
Severe Thunderstorm Watch
Expires 9:00 PM
46 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
11%
9 PM
26°
14%
10 PM
24°
14%
11 PM
24°
14%
12 AM
23°
7%
1 AM
22°
3%
2 AM
21°
3%
3 AM
21°
3%
4 AM
20°
3%
5 AM
19°
3%
6 AM
18°
3%
7 AM
19°
3%
8 AM
21°
3%
9 AM
22°
3%
10 AM
24°
3%
11 AM
24°
3%
12 PM
26°
3%
1 PM
27°
3%
2 PM
27°
3%
3 PM
27°
3%
4 PM
27°
3%
5 PM
26°
3%
6 PM
26°
3%
7 PM
25°
3%
7-Day Forecast
Tonight
34° 18°
Clear.
Wed
29° 18°
Mostly Clear.
Thu
26° 16°
Clear.
Fri
23° 16°
Overcast with a 44% chance of rain.
Sat
29° 17°
Mostly Cloudy with a 45% chance of rain.
Sun
34° 23°
Clear.
Mon
34° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Mostly Clear 11% 8 mph N 75%
9 PM 26° Clear 14% 7 mph N 80%
10 PM 24° Clear 14% 8 mph N 81%
11 PM 24° Clear 14% 9 mph N 81%
12 AM 23° Clear 7% 9 mph N 83%
1 AM 22° Clear 3% 9 mph N 84%
2 AM 21° Clear 3% 8 mph N 86%
3 AM 21° Clear 3% 8 mph N 88%
4 AM 20° Clear 3% 7 mph NNW 88%
5 AM 19° Clear 3% 8 mph NNW 88%
6 AM 18° Clear 3% 8 mph NNW 88%
7 AM 19° Clear 3% 9 mph N 84%
8 AM 21° Clear 3% 9 mph N 80%
9 AM 22° Clear 3% 9 mph N 76%
10 AM 24° Mostly Clear 3% 10 mph N 72%
11 AM 24° Mostly Clear 3% 11 mph N 69%
12 PM 26° Partly Cloudy 3% 11 mph N 66%
1 PM 27° Partly Cloudy 3% 12 mph N 64%
2 PM 27° Partly Cloudy 3% 12 mph N 64%
3 PM 27° Partly Cloudy 3% 11 mph N 64%
4 PM 27° Partly Cloudy 3% 11 mph N 65%
5 PM 26° Partly Cloudy 3% 11 mph NNE 68%
6 PM 26° Mostly Clear 3% 10 mph NNE 71%
7 PM 25° Mostly Clear 3% 10 mph NNE 73%
15-Day Forecast
Today
7/21
Clear
14%
18°
34°
Wed
7/22
Mostly Clear
3%
18°
29°
Thu
7/23
Clear
3%
16°
26°
Fri
7/24
Overcast
44%
16°
23°
Sat
7/25
Mostly Cloudy
45%
17°
29°
Sun
7/26
Clear
17%
23°
34°
Mon
7/27
Clear
17%
23°
34°
Tue
7/28
Rain
28%
20°
32°
Wed
7/29
Drizzle
44%
18°
29°
Thu
7/30
Drizzle
44%
15°
29°
Fri
7/31
Clear
60%
17°
28°
Sat
8/1
Clear
60%
19°
30°
Sun
8/2
Drizzle
60%
20°
31°
Mon
8/3
Drizzle
60%
21°
31°
Tue
8/4
Drizzle
60%
21°
32°
46
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
46 AQI 8.4 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 46 Good 36 46
Thu 30 Good 30 26
Fri 33 Good 33 16
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 Tue Jul 21, 23:00'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
SBCAPE934 J/kg
MLCAPE765 J/kg
MUCAPE1430 J/kg
SBCIN-221 J/kg
MLCIN0 J/kg
Lifted Index-1.1
Kinematics
0–6 km Shear39 kt
0–1 km Shear10 kt
Eff. Shear41 kt
0–1 km SRH-74
0–3 km SRH-89
Eff. SRH-89
Storm Motion283° @ 31 kt
0–1 km EHI-0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index10.4
Thermo & Levels
PWAT1.57 in
0–3 km LR4.8 °C/km
700–500 LR5.8 °C/km
Total Totals40.9
LCL921 hPa
LFC636 hPa
EL167 hPa
Freezing Lvl17,585 ft