Linn County, Iowa, United States

Last updated: 7:14 PM CDT · Refresh

27°C

Feels like 30°

Partly Cloudy

▲ 28° / ▼ 19°

Wind

5 mph NNE

Humidity

79%

Dew Point

22°

Pressure

29.04 inHg

Visibility

10 mi

UV Index

3.3

Cloud Cover

50%

Sunrise

5:36 AM

Sunset

8:45 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Linn County is currently partly cloudy at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2118 J/kg) — isolated convective development possible. Sunrise: 5:36AM · Sunset: 8:45PM.

45 AQI · Good Dominant: O3 Air Quality

Hourly Forecast · Next 24 Hours

Now

27°

16%

8 PM

26°

34%

9 PM

24°

34%

10 PM

23°

19%

11 PM

23°

19%

12 AM

22°

31%

1 AM

22°

15%

2 AM

22°

19%

3 AM

21°

4 AM

21°

5 AM

20°

6 AM

20°

7 AM

21°

8 AM

22°

9 AM

23°

19%

10 AM

24°

11%

11 AM

24°

18%

12 PM

25°

26%

1 PM

26°

26%

2 PM

26°

25%

3 PM

26°

21%

4 PM

26°

28%

5 PM

25°

28%

6 PM

25°

24%

7-Day Forecast

Tonight

28° 19°

Partly Cloudy.

Sun

27° 20°

Mostly Cloudy with a 26% chance of rain.

Mon

27° 18°

Clear.

Tue

27° 17°

Mostly Clear with a 21% chance of rain.

Wed

27° 18°

Rain, 72% chance.

Thu

23° 18°

Rain, 82% chance.

Fri

25° 18°

Mostly Clear with a 52% chance of rain.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 27° Partly Cloudy 16% 5 mph NNE 79%

8 PM 26° Partly Cloudy 34% 5 mph NNE 84%

9 PM 24° Mostly Cloudy 34% 5 mph NNE 88%

10 PM 23° Overcast 19% 4 mph NE 91%

11 PM 23° Overcast 19% 4 mph NNE 92%

12 AM 22° Mostly Cloudy 31% 5 mph NNE 93%

1 AM 22° Mostly Cloudy 15% 4 mph NE 94%

2 AM 22° Mostly Cloudy 19% 4 mph NE 95%

3 AM 21° Mostly Cloudy 8% 5 mph NNE 96%

4 AM 21° Mostly Cloudy 8% 5 mph NNE 96%

5 AM 20° Mostly Cloudy 9% 5 mph NNE 96%

6 AM 20° Overcast 5% 6 mph NE 96%

7 AM 21° Overcast 7% 6 mph NE 95%

8 AM 22° Mostly Cloudy 7% 6 mph NE 91%

9 AM 23° Mostly Cloudy 19% 6 mph ENE 86%

10 AM 24° Mostly Cloudy 11% 7 mph ENE 82%

11 AM 24° Partly Cloudy 18% 6 mph NE 78%

12 PM 25° Partly Cloudy 26% 6 mph NE 75%

1 PM 26° Partly Cloudy 26% 6 mph NE 72%

2 PM 26° Partly Cloudy 25% 6 mph NE 72%

3 PM 26° Partly Cloudy 21% 7 mph NNE 71%

4 PM 26° Partly Cloudy 28% 8 mph NNE 72%

5 PM 25° Partly Cloudy 28% 6 mph NE 73%

6 PM 25° Partly Cloudy 24% 6 mph NE 75%

15-Day Forecast

Today

7/4

Partly Cloudy

19%

19°

28°

Sun

7/5

Mostly Cloudy

26%

20°

27°

Mon

7/6

Clear

12%

18°

27°

Tue

7/7

Mostly Clear

21%

17°

27°

Wed

7/8

Rain

72%

18°

27°

Thu

7/9

Rain

82%

18°

23°

Fri

7/10

Mostly Clear

52%

18°

25°

Sat

7/11

Mostly Clear

28%

16°

24°

Sun

7/12

Clear

43%

14°

24°

Mon

7/13

Mostly Cloudy

44%

16°

26°

Tue

7/14

Overcast

44%

18°

28°

Wed

7/15

Drizzle

60%

17°

28°

Thu

7/16

Drizzle

60%

16°

24°

Fri

7/17

Drizzle

60%

16°

24°

Sat

7/18

Drizzle

60%

17°

26°

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

39 AQI 7.0 µg/m³

O₃

Ground-level ozone

Dominant

45 AQI 50 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 45 Good 45 39

Mon 39 Good 37 39

Tue 36 Good 36 36

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

SBCAPE2253 J/kg

MLCAPE1658 J/kg

MUCAPE2253 J/kg

SBCIN-26 J/kg

MLCIN0 J/kg

Lifted Index-6.9

Kinematics

0–6 km Shear19 kt

0–1 km Shear10 kt

Eff. Shear21 kt

0–1 km SRH-29

0–3 km SRH-38

Eff. SRH-38

Storm Motion234° @ 10 kt

0–1 km EHI-0.4

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index33.0

Thermo & Levels

PWAT1.62 in

0–3 km LR6.7 °C/km

700–500 LR5.9 °C/km

Total Totals49.5

LCL921 hPa

LFC890 hPa

EL175 hPa

Freezing Lvl13,665 ft

Linn County, Iowa, United States

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