Severe Thunderstorm Watch 10:00 PM

Clayton County, Iowa, United States

Last updated: 9:13 PM CDT  ·  Refresh
21°C
Feels like 21°
Mostly Clear
▲ 29°  /  ▼ 15°
Wind
8 mph NW
Humidity
86%
Dew Point
17°
Pressure
28.95 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
12%
Sunrise
6:18 AM
Sunset
7:58 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Clayton County is currently mostly clear at 20°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 838 J/kg) — isolated convective development possible. Sunrise: 6:18AM · Sunset: 7:58PM.

Alerts

Severe Thunderstorm Watch
Expires 10:00 PM
31 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
3%
10 PM
20°
21%
11 PM
19°
14%
12 AM
18°
14%
1 AM
18°
3%
2 AM
17°
3%
3 AM
17°
3%
4 AM
17°
3%
5 AM
15°
3%
6 AM
15°
3%
7 AM
16°
3%
8 AM
18°
5%
9 AM
21°
13%
10 AM
23°
13%
11 AM
24°
3%
12 PM
25°
3%
1 PM
27°
3%
2 PM
27°
3%
3 PM
27°
3%
4 PM
28°
3%
5 PM
26°
3%
6 PM
25°
3%
7 PM
24°
3%
8 PM
23°
3%
7-Day Forecast
Tonight
29° 15°
Mostly Clear.
Sat
28° 13°
Clear.
Sun
26° 11°
Clear.
Mon
22° 12°
Overcast with a 61% chance of rain.
Tue
27° 13°
Rain, 82% chance.
Wed
29° 16°
Clear with a 64% chance of rain.
Thu
27° 15°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 21° Mostly Clear 3% 8 mph NW 86%
10 PM 20° Clear 21% 7 mph NW 85%
11 PM 19° Clear 14% 7 mph NW 85%
12 AM 18° Clear 14% 6 mph NW 86%
1 AM 18° Clear 3% 6 mph NW 86%
2 AM 17° Clear 3% 6 mph NW 87%
3 AM 17° Clear 3% 5 mph WNW 87%
4 AM 17° Mostly Clear 3% 5 mph WNW 87%
5 AM 15° Clear 3% 5 mph WNW 86%
6 AM 15° Clear 3% 5 mph NW 86%
7 AM 16° Clear 3% 6 mph NW 85%
8 AM 18° Clear 5% 8 mph NW 80%
9 AM 21° Clear 13% 9 mph NW 75%
10 AM 23° Clear 13% 10 mph NW 71%
11 AM 24° Clear 3% 11 mph NW 66%
12 PM 25° Clear 3% 12 mph NNW 60%
1 PM 27° Clear 3% 13 mph NNW 56%
2 PM 27° Clear 3% 13 mph NW 55%
3 PM 27° Clear 3% 13 mph NW 54%
4 PM 28° Clear 3% 13 mph NW 55%
5 PM 26° Clear 3% 12 mph NW 59%
6 PM 25° Clear 3% 11 mph NW 64%
7 PM 24° Clear 3% 10 mph NW 64%
8 PM 23° Clear 3% 10 mph NW 66%
15-Day Forecast
Today
8/21
Mostly Clear
3%
15°
29°
Sat
8/22
Clear
14%
13°
28°
Sun
8/23
Clear
3%
11°
26°
Mon
8/24
Overcast
61%
12°
22°
Tue
8/25
Rain
82%
13°
27°
Wed
8/26
Clear
64%
16°
29°
Thu
8/27
Clear
17%
15°
27°
Fri
8/28
Clear
22%
16°
28°
Sat
8/29
Rain
69%
16°
29°
Sun
8/30
Thunderstorm
68%
18°
30°
Mon
8/31
Clear
60%
16°
29°
Tue
9/1
Drizzle
60%
17°
29°
Wed
9/2
Drizzle
60%
17°
29°
Thu
9/3
Clear
60%
16°
28°
Fri
9/4
Drizzle
60%
16°
28°
31
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
31 AQI 5.6 µg/m³
O3
Ground-level ozone
Dominant
31 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 31 Good 31 31
Sun 27 Good 27 24
Mon 25 Good 25 9
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 Sat Aug 22, 01:00'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
SBCAPE268 J/kg
MLCAPE436 J/kg
MUCAPE805 J/kg
SBCIN-283 J/kg
MLCIN-145 J/kg
Lifted Index-0.5
Kinematics
0–6 km Shear21 kt
0–1 km Shear13 kt
Eff. Shear16 kt
0–1 km SRH35
0–3 km SRH91
Eff. SRH76
Storm Motion353° @ 28 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index12.5
Thermo & Levels
PWAT1.01 in
0–3 km LR4.8 °C/km
700–500 LR6.5 °C/km
Total Totals44.5
LCL938 hPa
LFC543 hPa
EL258 hPa
Freezing Lvl12,894 ft