Story County, Iowa, United States

Last updated: 7:11 PM CDT · Refresh

27°C

Feels like 30°

Partly Cloudy

▲ 28° / ▼ 19°

Wind

4 mph N

Humidity

74%

Dew Point

22°

Pressure

28.91 inHg

Visibility

10 mi

UV Index

3.5

Cloud Cover

54%

Sunrise

5:43 AM

Sunset

8:52 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Story County is currently partly cloudy at 27°C. Precipitation is likely — peak probability 56% around 12 AM. Atmospheric instability is elevated (CAPE up to 2223 J/kg) — isolated convective development possible. Sunrise: 5:43AM · Sunset: 8:52PM.

42 AQI · Good Dominant: O3 Air Quality

Hourly Forecast · Next 24 Hours

Now

27°

13%

8 PM

27°

38%

9 PM

26°

38%

10 PM

24°

44%

11 PM

23°

44%

12 AM

23°

56%

1 AM

22°

48%

2 AM

22°

43%

3 AM

21°

48%

4 AM

21°

32%

5 AM

20°

33%

6 AM

19°

39%

7 AM

20°

40%

8 AM

21°

44%

9 AM

22°

32%

10 AM

24°

23%

11 AM

24°

33%

12 PM

25°

33%

1 PM

26°

41%

2 PM

27°

32%

3 PM

27°

36%

4 PM

27°

36%

5 PM

27°

29%

6 PM

26°

25%

7-Day Forecast

Tonight

28° 19°

Partly Cloudy with a 44% chance of rain.

Sun

28° 19°

Partly Cloudy with a 48% chance of rain.

Mon

27° 19°

Clear with a 25% chance of rain.

Tue

28° 18°

Partly Cloudy.

Wed

27° 19°

Rain, 82% chance.

Thu

24° 18°

Rain, 82% chance.

Fri

26° 17°

Partly Cloudy with a 28% chance of rain.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 27° Partly Cloudy 13% 4 mph N 74%

8 PM 27° Mostly Cloudy 38% 2 mph ENE 79%

9 PM 26° Mostly Cloudy 38% 3 mph ENE 82%

10 PM 24° Mostly Cloudy 44% 3 mph ENE 85%

11 PM 23° Mostly Cloudy 44% 3 mph ENE 88%

12 AM 23° Mostly Cloudy 56% 4 mph ENE 91%

1 AM 22° Mostly Cloudy 48% 4 mph NE 93%

2 AM 22° Mostly Cloudy 43% 4 mph N 93%

3 AM 21° Mostly Cloudy 48% 3 mph N 93%

4 AM 21° Partly Cloudy 32% 3 mph N 92%

5 AM 20° Partly Cloudy 33% 3 mph N 94%

6 AM 19° Partly Cloudy 39% 4 mph N 94%

7 AM 20° Fog 40% 4 mph NNE 94%

8 AM 21° Partly Cloudy 44% 4 mph NNE 91%

9 AM 22° Partly Cloudy 32% 5 mph NE 87%

10 AM 24° Partly Cloudy 23% 5 mph NE 83%

11 AM 24° Partly Cloudy 33% 5 mph NE 79%

12 PM 25° Partly Cloudy 33% 5 mph NE 75%

1 PM 26° Partly Cloudy 41% 5 mph NE 72%

2 PM 27° Partly Cloudy 32% 5 mph NE 70%

3 PM 27° Partly Cloudy 36% 5 mph NE 68%

4 PM 27° Partly Cloudy 36% 5 mph NE 68%

5 PM 27° Partly Cloudy 29% 5 mph NE 70%

6 PM 26° Partly Cloudy 25% 5 mph NE 73%

15-Day Forecast

Today

7/4

Partly Cloudy

44%

19°

28°

Sun

7/5

Partly Cloudy

48%

19°

28°

Mon

7/6

Clear

25%

19°

27°

Tue

7/7

Partly Cloudy

18°

28°

Wed

7/8

Rain

82%

19°

27°

Thu

7/9

Rain

82%

18°

24°

Fri

7/10

Partly Cloudy

28%

17°

26°

Sat

7/11

Clear

27%

17°

26°

Sun

7/12

Clear

43%

17°

26°

Mon

7/13

Mostly Cloudy

44%

17°

28°

Tue

7/14

Mostly Clear

25%

18°

28°

Wed

7/15

Drizzle

60%

17°

28°

Thu

7/16

Drizzle

60%

17°

25°

Fri

7/17

Rain

90%

16°

26°

Sat

7/18

Drizzle

60%

17°

27°

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

PM_2.5

Fine particulate matter

24 AQI 4.5 µg/m³

O₃

Ground-level ozone

Dominant

42 AQI 46 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 42 Good 42 24

Mon 34 Good 34 29

Tue 44 Good 33 44

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. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Sat Jul 4, 22:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE2584 J/kg

MLCAPE1636 J/kg

MUCAPE2584 J/kg

SBCIN-27 J/kg

MLCIN0 J/kg

Lifted Index-7.2

Kinematics

0–6 km Shear10 kt

0–1 km Shear6 kt

Eff. Shear10 kt

0–1 km SRH-12

0–3 km SRH-20

Eff. SRH-20

Storm Motion179° @ 10 kt

0–1 km EHI-0.2

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index35.5

Thermo & Levels

PWAT1.70 in

0–3 km LR7.0 °C/km

700–500 LR6.0 °C/km

Total Totals49.5

LCL903 hPa

LFC879 hPa

EL173 hPa

Freezing Lvl13,114 ft

Story County, Iowa, United States

Alerts