Heat Advisory — Iowa, IA, Johnson, IA, Cedar, IA, Muscatine, IA, Scott, IA, Keokuk, IA, Washington, IA, Louisa, IA, Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Rock Island, IL, Henry, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO 7:00 PM Heat Advisory — Dallas, IA, Polk, IA, Jasper, IA, Poweshiek, IA, Madison, IA, Warren, IA, Marion, IA, Mahaska, IA, Union, IA, Clarke, IA, Lucas, IA, Monroe, IA, Wapello, IA, Ringgold, IA, Decatur, IA, Wayne, IA, Appanoose, IA, Davis, IA 7:00 PM

Des Moines, Iowa

Last updated: 12:07 AM CDT  ·  Refresh
27°C
Feels like 27°
Mostly Clear
▲ 35°  /  ▼ 22°
Wind
8 mph S
Humidity
63%
Dew Point
20°
Pressure
28.91 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
20%
Sunrise
6:39 AM
Sunset
7:49 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Des Moines is currently mostly clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2383 J/kg) — isolated convective development possible. Sunrise: 6:39AM · Sunset: 7:49PM.

Alerts

Heat Advisory
Iowa, IA, Johnson, IA, Cedar, IA, Muscatine, IA, Scott, IA, Keokuk, IA, Washington, IA, Louisa, IA, Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Rock Island, IL, Henry, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO
Expires 7:00 PM
Heat Advisory
Dallas, IA, Polk, IA, Jasper, IA, Poweshiek, IA, Madison, IA, Warren, IA, Marion, IA, Mahaska, IA, Union, IA, Clarke, IA, Lucas, IA, Monroe, IA, Wapello, IA, Ringgold, IA, Decatur, IA, Wayne, IA, Appanoose, IA, Davis, IA
Expires 7:00 PM
59 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
19%
1 AM
26°
17%
2 AM
26°
15%
3 AM
26°
15%
4 AM
26°
14%
5 AM
24°
14%
6 AM
23°
14%
7 AM
23°
12%
8 AM
24°
17%
9 AM
27°
24%
10 AM
27°
17%
11 AM
28°
17%
12 PM
30°
17%
1 PM
32°
17%
2 PM
32°
19%
3 PM
32°
30%
4 PM
31°
42%
5 PM
31°
46%
6 PM
33°
28%
7 PM
31°
22%
8 PM
30°
22%
9 PM
29°
22%
10 PM
28°
31%
11 PM
27°
22%
7-Day Forecast
Today
35° 22°
Mostly Cloudy with a 30% chance of rain.
Tue
40° 22°
Mostly Clear with a 22% chance of rain.
Wed
37° 23°
Mostly Clear.
Thu
40° 21°
Mostly Clear with a 28% chance of rain.
Fri
41° 22°
Partly Cloudy with a 26% chance of rain.
Sat
39° 23°
Clear with a 25% chance of rain.
Sun
38° 22°
Mostly Cloudy with a 25% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 19% 8 mph S 63%
1 AM 26° Partly Cloudy 17% 9 mph SSW 60%
2 AM 26° Partly Cloudy 15% 8 mph SSW 60%
3 AM 26° Partly Cloudy 15% 7 mph SSW 60%
4 AM 26° Mostly Cloudy 14% 8 mph SSW 61%
5 AM 24° Mostly Cloudy 14% 8 mph SSW 62%
6 AM 23° Partly Cloudy 14% 8 mph SSW 64%
7 AM 23° Partly Cloudy 12% 7 mph SSW 65%
8 AM 24° Partly Cloudy 17% 8 mph SW 62%
9 AM 27° Partly Cloudy 24% 8 mph SW 57%
10 AM 27° Partly Cloudy 17% 9 mph WSW 51%
11 AM 28° Partly Cloudy 17% 8 mph SW 48%
12 PM 30° Partly Cloudy 17% 6 mph SW 46%
1 PM 32° Mostly Cloudy 17% 6 mph SW 43%
2 PM 32° Mostly Cloudy 19% 6 mph SW 44%
3 PM 32° Mostly Cloudy 30% 5 mph SW 46%
4 PM 31° Mostly Cloudy 42% 5 mph SW 47%
5 PM 31° Mostly Cloudy 46% 5 mph SW 50%
6 PM 33° Mostly Cloudy 28% 5 mph W 52%
7 PM 31° Mostly Cloudy 22% 6 mph WNW 55%
8 PM 30° Partly Cloudy 22% 6 mph SW 59%
9 PM 29° Partly Cloudy 22% 6 mph S 63%
10 PM 28° Partly Cloudy 31% 6 mph S 66%
11 PM 27° Partly Cloudy 22% 5 mph SSE 68%
15-Day Forecast
Today
8/31
Mostly Cloudy
30%
22°
35°
Tue
9/1
Mostly Clear
22%
22°
40°
Wed
9/2
Mostly Clear
7%
23°
37°
Thu
9/3
Mostly Clear
28%
21°
40°
Fri
9/4
Partly Cloudy
26%
22°
41°
Sat
9/5
Clear
25%
23°
39°
Sun
9/6
Mostly Cloudy
25%
22°
38°
Mon
9/7
Mostly Cloudy
34%
19°
37°
Tue
9/8
Clear
35%
18°
32°
Wed
9/9
Mostly Clear
32%
17°
33°
Thu
9/10
Drizzle
60%
18°
33°
Fri
9/11
Drizzle
60%
18°
32°
Sat
9/12
Drizzle
60%
17°
33°
Sun
9/13
Drizzle
60%
18°
33°
Mon
9/14
Drizzle
60%
16°
29°
59
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
59 AQI 13.3 µg/m³
O3
Ground-level ozone
38 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 59 Moderate 38 59
Tue 61 Moderate 33 61
Wed 58 Moderate 43 58
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 Mon Aug 31, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE205 J/kg
MLCAPE377 J/kg
MUCAPE1493 J/kg
SBCIN-705 J/kg
MLCIN-480 J/kg
Lifted Index-1.3
Kinematics
0–6 km Shear27 kt
0–1 km Shear30 kt
Eff. Shear9 kt
0–1 km SRH304
0–3 km SRH391
Eff. SRH-3
Storm Motion284° @ 21 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.2
STP (eff)0.0
Supercell0.0
K-Index31.9
Thermo & Levels
PWAT1.76 in
0–3 km LR4.5 °C/km
700–500 LR7.1 °C/km
Total Totals47.3
LCL886 hPa
LFC569 hPa
EL234 hPa
Freezing Lvl15,650 ft