Excessive Heat Warning — Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Perry, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO 8:00 PM

Cape Girardeau, Missouri

Last updated: 2:27 AM CDT  ·  Refresh
26°C
Feels like 29°
Clear
▲ 37°  /  ▼ 23°
Wind
2 mph SSE
Humidity
79%
Dew Point
23°
Pressure
29.53 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:31 AM
Sunset
7:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cape Girardeau is currently clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2074 J/kg) — isolated convective development possible. Sunrise: 6:31AM · Sunset: 7:22PM.

Alerts

Excessive Heat Warning
Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Perry, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO
Expires 8:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
13%
3 AM
25°
13%
4 AM
25°
4%
5 AM
23°
4%
6 AM
23°
4%
7 AM
24°
9%
8 AM
27°
16%
9 AM
29°
17%
10 AM
32°
15%
11 AM
33°
15%
12 PM
34°
16%
1 PM
36°
16%
2 PM
37°
16%
3 PM
37°
17%
4 PM
36°
17%
5 PM
37°
17%
6 PM
36°
8%
7 PM
34°
3%
8 PM
33°
5%
9 PM
29°
5%
10 PM
28°
15%
11 PM
28°
15%
12 AM
27°
19%
1 AM
28°
20%
7-Day Forecast
Today
37° 23°
Clear.
Sat
39° 23°
Mostly Clear with a 51% chance of rain.
Sun
38° 19°
Mostly Clear.
Mon
34° 14°
Partly Cloudy.
Tue
39° 18°
Clear.
Wed
41° 22°
Clear with a 28% chance of rain.
Thu
39° 19°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 13% 2 mph SSE 79%
3 AM 25° Clear 13% 3 mph SSW 79%
4 AM 25° Clear 4% 3 mph SSW 81%
5 AM 23° Clear 4% 3 mph S 82%
6 AM 23° Clear 4% 3 mph S 83%
7 AM 24° Clear 9% 3 mph S 80%
8 AM 27° Clear 16% 2 mph SSW 71%
9 AM 29° Clear 17% 3 mph SW 61%
10 AM 32° Clear 15% 4 mph SW 53%
11 AM 33° Clear 15% 4 mph SW 48%
12 PM 34° Mostly Clear 16% 4 mph SW 43%
1 PM 36° Mostly Clear 16% 4 mph SW 40%
2 PM 37° Mostly Clear 16% 4 mph SSW 39%
3 PM 37° Mostly Clear 17% 5 mph SSW 39%
4 PM 36° Mostly Clear 17% 5 mph S 40%
5 PM 37° Mostly Clear 17% 5 mph S 44%
6 PM 36° Clear 8% 5 mph S 48%
7 PM 34° Clear 3% 5 mph S 53%
8 PM 33° Clear 5% 4 mph S 57%
9 PM 29° Clear 5% 4 mph S 61%
10 PM 28° Clear 15% 4 mph S 64%
11 PM 28° Clear 15% 4 mph S 66%
12 AM 27° Clear 19% 4 mph S 67%
1 AM 28° Clear 20% 4 mph S 69%
15-Day Forecast
Today
9/4
Clear
17%
23°
37°
Sat
9/5
Mostly Clear
51%
23°
39°
Sun
9/6
Mostly Clear
13%
19°
38°
Mon
9/7
Partly Cloudy
3%
14°
34°
Tue
9/8
Clear
3%
18°
39°
Wed
9/9
Clear
28%
22°
41°
Thu
9/10
Rain
28%
19°
39°
Fri
9/11
Drizzle
68%
18°
40°
Sat
9/12
Rain
44%
22°
43°
Sun
9/13
Clear
44%
18°
39°
Mon
9/14
Clear
25%
22°
37°
Tue
9/15
Drizzle
60%
22°
38°
Wed
9/16
Drizzle
60%
22°
37°
Thu
9/17
Drizzle
60%
20°
34°
Fri
9/18
Clear
25%
19°
34°
53
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
53 AQI 10.1 µg/m³
O3
Ground-level ozone
46 AQI 51 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 46 53
Sat 58 Moderate 48 58
Sun 57 Moderate 44 57
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 Sep 4, 06:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE791 J/kg
MLCAPE815 J/kg
MUCAPE1082 J/kg
SBCIN-339 J/kg
MLCIN-155 J/kg
Lifted Index-2.7
Kinematics
0–6 km Shear3 kt
0–1 km Shear11 kt
Eff. Shear7 kt
0–1 km SRH2
0–3 km SRH-6
Eff. SRH-9
Storm Motion25° @ 8 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.1
Thermo & Levels
PWAT1.74 in
0–3 km LR5.1 °C/km
700–500 LR5.6 °C/km
Total Totals46.9
LCL957 hPa
LFC733 hPa
EL226 hPa
Freezing Lvl16,345 ft