Freeze Warning — Emmet, IA, Kossuth, IA, Winnebago, IA, Worth, IA, Palo Alto, IA, Hancock, IA, Cerro Gordo, IA, Pocahontas, IA, Humboldt, IA, Wright, IA, Franklin, IA, Butler, IA, Bremer, IA, Sac, IA, Calhoun, IA, Webster, IA, Hamilton, IA, Hardin, IA, Grundy, IA, Black Hawk, IA, Crawford, IA, Carroll, IA, Greene, IA, Boone, IA, Story, IA, Marshall, IA, Tama, IA, Audubon, IA, Guthrie, IA, Dallas, IA, Polk, IA, Jasper, IA, Poweshiek, IA, Cass, IA, Adair, IA, Madison, IA, Warren, IA, Marion, IA, Mahaska, IA, Adams, IA, Union, IA, Clarke, IA, Lucas, IA, Monroe, IA, Wapello, IA, Taylor, IA, Ringgold, IA, Decatur, IA, Wayne, IA, Appanoose, IA 9:00 AM

Story County, Iowa, United States

Last updated: 9:53 PM CDT  ·  Refresh
6°C
Feels like 3°
Clear
▲ 11°  /  ▼ 2°
Wind
6 mph NNW
Humidity
72%
Dew Point
1°
Pressure
29.44 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
1%
Sunrise
7:26 AM
Sunset
6:30 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Story County is currently clear at 6°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:26AM · Sunset: 6:30PM.

Alerts

Freeze Warning
Emmet, IA, Kossuth, IA, Winnebago, IA, Worth, IA, Palo Alto, IA, Hancock, IA, Cerro Gordo, IA, Pocahontas, IA, Humboldt, IA, Wright, IA, Franklin, IA, Butler, IA, Bremer, IA, Sac, IA, Calhoun, IA, Webster, IA, Hamilton, IA, Hardin, IA, Grundy, IA, Black Hawk, IA, Crawford, IA, Carroll, IA, Greene, IA, Boone, IA, Story, IA, Marshall, IA, Tama, IA, Audubon, IA, Guthrie, IA, Dallas, IA, Polk, IA, Jasper, IA, Poweshiek, IA, Cass, IA, Adair, IA, Madison, IA, Warren, IA, Marion, IA, Mahaska, IA, Adams, IA, Union, IA, Clarke, IA, Lucas, IA, Monroe, IA, Wapello, IA, Taylor, IA, Ringgold, IA, Decatur, IA, Wayne, IA, Appanoose, IA
Expires 9:00 AM
20 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
6°
3%
10 PM
5°
3%
11 PM
4°
3%
12 AM
4°
3%
1 AM
3°
3%
2 AM
3°
3%
3 AM
3°
3%
4 AM
3°
3%
5 AM
2°
3%
6 AM
2°
3%
7 AM
2°
3%
8 AM
4°
3%
9 AM
7°
3%
10 AM
9°
3%
11 AM
11°
3%
12 PM
12°
3%
1 PM
14°
3%
2 PM
14°
3%
3 PM
15°
3%
4 PM
14°
3%
5 PM
11°
3%
6 PM
10°
3%
7 PM
10°
3%
8 PM
9°
3%
7-Day Forecast
Tonight
11° 2°
Clear.
Sat
15° 2°
Clear.
Sun
18° 4°
Clear.
Mon
21° 6°
Haze.
Tue
22° 8°
Mostly Clear.
Wed
24° 11°
Mostly Clear.
Thu
26° 12°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 6° Clear 3% 6 mph NNW 72%
10 PM 5° Clear 3% 6 mph NNW 71%
11 PM 4° Clear 3% 5 mph NNW 73%
12 AM 4° Clear 3% 5 mph NNW 75%
1 AM 3° Clear 3% 4 mph NNW 76%
2 AM 3° Clear 3% 3 mph NW 76%
3 AM 3° Clear 3% 2 mph WNW 77%
4 AM 3° Clear 3% 2 mph W 78%
5 AM 2° Clear 3% 2 mph SW 78%
6 AM 2° Clear 3% 4 mph SSW 78%
7 AM 2° Clear 3% 6 mph SSW 76%
8 AM 4° Clear 3% 7 mph SSW 72%
9 AM 7° Clear 3% 9 mph SSW 65%
10 AM 9° Clear 3% 10 mph SSW 60%
11 AM 11° Clear 3% 12 mph SW 54%
12 PM 12° Clear 3% 13 mph SW 49%
1 PM 14° Clear 3% 13 mph SW 48%
2 PM 14° Clear 3% 13 mph SSW 47%
3 PM 15° Clear 3% 13 mph SSW 47%
4 PM 14° Clear 3% 12 mph SSW 51%
5 PM 11° Clear 3% 11 mph SSW 56%
6 PM 10° Clear 3% 11 mph SSW 61%
7 PM 10° Clear 3% 11 mph SSW 63%
8 PM 9° Clear 3% 11 mph SSW 64%
15-Day Forecast
Today
10/16
Clear
3%
2°
11°
Sat
10/17
Clear
3%
2°
15°
Sun
10/18
Clear
3%
4°
18°
Mon
10/19
Haze
3%
6°
21°
Tue
10/20
Mostly Clear
14%
8°
22°
Wed
10/21
Mostly Clear
18%
11°
24°
Thu
10/22
Clear
7%
12°
26°
Fri
10/23
Mostly Clear
16%
14°
26°
Sat
10/24
Drizzle
54%
11°
23°
Sun
10/25
Drizzle
54%
9°
19°
Mon
10/26
Overcast
38%
7°
17°
Tue
10/27
Drizzle
60%
7°
17°
Wed
10/28
Drizzle
60%
7°
17°
Thu
10/29
Drizzle
60%
8°
18°
Fri
10/30
Drizzle
60%
7°
17°
20
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
9 AQI 1.7 µg/m³
O3
Ground-level ozone
Dominant
20 AQI 23 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 20 Good 20 9
Sun 28 Good 28 14
Mon 28 Good 26 28
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sat Oct 17, 01:00'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
SBCAPE0 J/kg
MLCAPE12 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index20.5
Kinematics
0–6 km Shear45 kt
0–1 km Shear20 kt
Eff. Shear—
0–1 km SRH83
0–3 km SRH105
Eff. SRH—
Storm Motion25° @ 33 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-21.6
Thermo & Levels
PWAT0.30 in
0–3 km LR3.0 °C/km
700–500 LR5.0 °C/km
Total Totals22.3
LCL933 hPa
LFC—
EL—
Freezing Lvl3,881 ft