Heat Advisory — Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO 8:00 PM

Des Moines, Iowa

Last updated: 5:14 AM CDT  ·  Refresh
24°C
Feels like 27°
Mostly Cloudy
▲ 34°  /  ▼ 21°
Wind
4 mph SSE
Humidity
87%
Dew Point
22°
Pressure
28.95 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
67%
Sunrise
6:19 AM
Sunset
8:19 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Des Moines is currently mostly cloudy at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3589 J/kg) — isolated convective development possible. Sunrise: 6:19AM · Sunset: 8:19PM.

Alerts

Heat Advisory
Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO
Expires 8:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
12%
6 AM
22°
26%
7 AM
22°
40%
8 AM
23°
29%
9 AM
24°
44%
10 AM
26°
44%
11 AM
27°
47%
12 PM
28°
39%
1 PM
30°
18%
2 PM
32°
18%
3 PM
33°
13%
4 PM
33°
18%
5 PM
33°
18%
6 PM
33°
19%
7 PM
32°
19%
8 PM
31°
24%
9 PM
28°
33%
10 PM
27°
27%
11 PM
27°
31%
12 AM
25°
34%
1 AM
25°
34%
2 AM
25°
38%
3 AM
25°
38%
4 AM
24°
47%
7-Day Forecast
Today
34° 21°
Partly Cloudy with a 47% chance of rain.
Wed
31° 21°
Partly Cloudy with a 67% chance of rain.
Thu
28° 20°
Mostly Cloudy with a 82% chance of rain.
Fri
30° 18°
Mostly Cloudy with a 75% chance of rain.
Sat
37° 21°
Rain, 80% chance.
Sun
31° 18°
Drizzle, 48% chance.
Mon
32° 16°
Partly Cloudy with a 57% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Cloudy 12% 4 mph SSE 87%
6 AM 22° Mostly Cloudy 26% 5 mph E 83%
7 AM 22° Overcast 40% 4 mph SE 82%
8 AM 23° Mostly Cloudy 29% 6 mph SE 79%
9 AM 24° Heavy Rain 44% 7 mph SE 74%
10 AM 26° Heavy Rain 44% 7 mph SSE 69%
11 AM 27° Mostly Cloudy 47% 6 mph SSW 64%
12 PM 28° Partly Cloudy 39% 7 mph SW 59%
1 PM 30° Partly Cloudy 18% 7 mph WSW 55%
2 PM 32° Mostly Clear 18% 5 mph SSW 52%
3 PM 33° Mostly Clear 13% 4 mph S 50%
4 PM 33° Partly Cloudy 18% 5 mph S 48%
5 PM 33° Mostly Clear 18% 4 mph S 50%
6 PM 33° Mostly Clear 19% 4 mph SE 54%
7 PM 32° Clear 19% 4 mph ENE 59%
8 PM 31° Clear 24% 5 mph ENE 68%
9 PM 28° Clear 33% 5 mph ENE 77%
10 PM 27° Clear 27% 6 mph ENE 82%
11 PM 27° Mostly Clear 31% 6 mph ENE 82%
12 AM 25° Mostly Clear 34% 6 mph E 82%
1 AM 25° Partly Cloudy 34% 7 mph E 81%
2 AM 25° Partly Cloudy 38% 7 mph E 82%
3 AM 25° Partly Cloudy 38% 7 mph E 83%
4 AM 24° Partly Cloudy 47% 7 mph E 84%
15-Day Forecast
Today
8/11
Partly Cloudy
47%
21°
34°
Wed
8/12
Partly Cloudy
67%
21°
31°
Thu
8/13
Mostly Cloudy
82%
20°
28°
Fri
8/14
Mostly Cloudy
75%
18°
30°
Sat
8/15
Rain
80%
21°
37°
Sun
8/16
Drizzle
48%
18°
31°
Mon
8/17
Partly Cloudy
57%
16°
32°
Tue
8/18
Drizzle
48%
17°
37°
Wed
8/19
Mostly Clear
35%
19°
37°
Thu
8/20
Clear
35%
21°
41°
Fri
8/21
Drizzle
60%
19°
42°
Sat
8/22
Drizzle
60%
19°
34°
Sun
8/23
Drizzle
60%
18°
33°
Mon
8/24
Drizzle
60%
17°
32°
Tue
8/25
Drizzle
60%
18°
32°
55
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
55 AQI 11.5 µg/m³
O3
Ground-level ozone
47 AQI 51 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 47 55
Wed 55 Moderate 40 55
Thu 45 Good 34 45
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 Aug 11, 08:00'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
SBCAPE1923 J/kg
MLCAPE2406 J/kg
MUCAPE3555 J/kg
SBCIN-573 J/kg
MLCIN0 J/kg
Lifted Index-6.9
Kinematics
0–6 km Shear28 kt
0–1 km Shear41 kt
Eff. Shear24 kt
0–1 km SRH294
0–3 km SRH220
Eff. SRH-70
Storm Motion292° @ 24 kt
0–1 km EHI3.5
Composite Parameters
Sig. Tornado1.8
STP (eff)0.0
Supercell0.0
K-Index38.1
Thermo & Levels
PWAT1.77 in
0–3 km LR4.0 °C/km
700–500 LR8.3 °C/km
Total Totals56.7
LCL956 hPa
LFC653 hPa
EL184 hPa
Freezing Lvl14,751 ft