Severe Thunderstorm Watch 9:00 PM

Urbandale, Iowa

Last updated: 7:09 PM CDT  ·  Refresh
27°C
Feels like 29°
Clear
▲ 31°  /  ▼ 17°
Wind
8 mph NW
Humidity
67%
Dew Point
21°
Pressure
28.98 inHg
Visibility
10 mi
UV Index
2.7
Cloud Cover
0%
Sunrise
6:30 AM
Sunset
8:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Urbandale is currently clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2469 J/kg) — isolated convective development possible. Sunrise: 6:30AM · Sunset: 8:05PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
36 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
12%
8 PM
26°
29%
9 PM
24°
21%
10 PM
22°
21%
11 PM
21°
21%
12 AM
21°
15%
1 AM
20°
4%
2 AM
20°
4%
3 AM
19°
4%
4 AM
19°
4%
5 AM
19°
4%
6 AM
17°
4%
7 AM
17°
5%
8 AM
19°
5%
9 AM
21°
5%
10 AM
23°
3%
11 AM
24°
3%
12 PM
26°
3%
1 PM
27°
3%
2 PM
29°
3%
3 PM
29°
3%
4 PM
29°
3%
5 PM
29°
3%
6 PM
28°
3%
7-Day Forecast
Tonight
31° 17°
Clear with a 21% chance of rain.
Sat
31° 17°
Clear.
Sun
29° 16°
Partly Cloudy.
Mon
28° 16°
Rain, 70% chance.
Tue
34° 17°
Rain, 72% chance.
Wed
34° 18°
Rain, 57% chance.
Thu
32° 17°
Clear with a 28% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 12% 8 mph NW 67%
8 PM 26° Clear 29% 6 mph NNW 73%
9 PM 24° Clear 21% 6 mph NNW 78%
10 PM 22° Clear 21% 7 mph N 81%
11 PM 21° Clear 21% 6 mph N 83%
12 AM 21° Clear 15% 5 mph N 85%
1 AM 20° Clear 4% 5 mph N 86%
2 AM 20° Clear 4% 4 mph NNW 83%
3 AM 19° Clear 4% 4 mph NW 81%
4 AM 19° Clear 4% 4 mph NW 79%
5 AM 19° Clear 4% 4 mph WNW 80%
6 AM 17° Clear 4% 4 mph WNW 82%
7 AM 17° Clear 5% 4 mph WNW 83%
8 AM 19° Clear 5% 5 mph WNW 77%
9 AM 21° Clear 5% 6 mph NW 71%
10 AM 23° Clear 3% 7 mph NW 65%
11 AM 24° Clear 3% 7 mph NW 59%
12 PM 26° Mostly Clear 3% 8 mph NW 54%
1 PM 27° Mostly Clear 3% 8 mph NW 51%
2 PM 29° Mostly Clear 3% 8 mph NW 50%
3 PM 29° Mostly Clear 3% 8 mph NW 50%
4 PM 29° Mostly Clear 3% 8 mph NNW 50%
5 PM 29° Mostly Clear 3% 7 mph NNW 55%
6 PM 28° Mostly Clear 3% 6 mph NNW 59%
15-Day Forecast
Today
8/21
Clear
21%
17°
31°
Sat
8/22
Clear
5%
17°
31°
Sun
8/23
Partly Cloudy
16%
16°
29°
Mon
8/24
Rain
70%
16°
28°
Tue
8/25
Rain
72%
17°
34°
Wed
8/26
Rain
57%
18°
34°
Thu
8/27
Clear
28%
17°
32°
Fri
8/28
Drizzle
64%
19°
33°
Sat
8/29
Rain
53%
18°
38°
Sun
8/30
Drizzle
56%
21°
37°
Mon
8/31
Drizzle
60%
19°
35°
Tue
9/1
Drizzle
60%
20°
36°
Wed
9/2
Drizzle
60%
21°
36°
Thu
9/3
Drizzle
60%
19°
35°
Fri
9/4
Drizzle
60%
18°
33°
36
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
28 AQI 5.1 µg/m³
O3
Ground-level ozone
Dominant
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 36 Good 36 28
Sun 32 Good 32 32
Mon 34 Good 34 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 Fri Aug 21, 22:00'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
SBCAPE2880 J/kg
MLCAPE2217 J/kg
MUCAPE2880 J/kg
SBCIN-100 J/kg
MLCIN-24 J/kg
Lifted Index-8.1
Kinematics
0–6 km Shear40 kt
0–1 km Shear10 kt
Eff. Shear44 kt
0–1 km SRH50
0–3 km SRH112
Eff. SRH112
Storm Motion344° @ 34 kt
0–1 km EHI0.9
Composite Parameters
Sig. Tornado0.7
STP (eff)0.8
Supercell7.3
K-Index31.1
Thermo & Levels
PWAT1.35 in
0–3 km LR6.9 °C/km
700–500 LR6.7 °C/km
Total Totals52.6
LCL897 hPa
LFC845 hPa
EL181 hPa
Freezing Lvl12,861 ft