Linn County, Iowa, United States

Last updated: 8:19 PM CDT  ·  Refresh
26°C
Feels like 29°
Partly Cloudy
▲ 28°  /  ▼ 19°
Wind
4 mph NNE
Humidity
84%
Dew Point
22°
Pressure
29.04 inHg
Visibility
10 mi
UV Index
1.1
Cloud Cover
32%
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 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2045 J/kg) — isolated convective development possible. Sunrise: 5:36AM · Sunset: 8:45PM.

Alerts

No active alerts for this location.
45 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
16%
9 PM
24°
34%
10 PM
23°
19%
11 PM
23°
23%
12 AM
22°
28%
1 AM
22°
15%
2 AM
22°
20%
3 AM
22°
8%
4 AM
21°
8%
5 AM
19°
8%
6 AM
20°
5%
7 AM
21°
7%
8 AM
22°
11%
9 AM
23°
19%
10 AM
24°
11%
11 AM
24°
14%
12 PM
26°
26%
1 PM
26°
26%
2 PM
26°
26%
3 PM
26°
21%
4 PM
26°
28%
5 PM
26°
28%
6 PM
25°
28%
7 PM
25°
28%
7-Day Forecast
Tonight
28° 19°
Partly Cloudy with a 23% chance of rain.
Sun
27° 19°
Mostly Cloudy with a 31% chance of rain.
Mon
27° 18°
Clear.
Tue
28° 16°
Mostly Clear with a 28% chance of rain.
Wed
27° 18°
Rain, 72% chance.
Thu
23° 17°
Rain, 71% chance.
Fri
24° 17°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 26° Partly Cloudy 16% 4 mph NNE 84%
9 PM 24° Partly Cloudy 34% 4 mph NE 89%
10 PM 23° Mostly Cloudy 19% 5 mph NE 92%
11 PM 23° Overcast 23% 4 mph NE 93%
12 AM 22° Mostly Cloudy 28% 4 mph NE 94%
1 AM 22° Mostly Cloudy 15% 5 mph NNE 94%
2 AM 22° Mostly Cloudy 20% 5 mph NE 95%
3 AM 22° Mostly Cloudy 8% 6 mph NE 96%
4 AM 21° Mostly Cloudy 8% 5 mph NE 96%
5 AM 19° Mostly Cloudy 8% 5 mph NE 96%
6 AM 20° Overcast 5% 6 mph NE 96%
7 AM 21° Overcast 7% 6 mph NE 94%
8 AM 22° Mostly Cloudy 11% 6 mph NE 90%
9 AM 23° Mostly Cloudy 19% 7 mph NE 86%
10 AM 24° Mostly Cloudy 11% 7 mph NE 81%
11 AM 24° Mostly Cloudy 14% 7 mph NE 78%
12 PM 26° Partly Cloudy 26% 6 mph NE 75%
1 PM 26° Partly Cloudy 26% 6 mph NE 72%
2 PM 26° Partly Cloudy 26% 6 mph NE 72%
3 PM 26° Partly Cloudy 21% 8 mph NNE 71%
4 PM 26° Mostly Cloudy 28% 8 mph NNE 72%
5 PM 26° Mostly Cloudy 28% 7 mph NE 74%
6 PM 25° Mostly Cloudy 28% 6 mph NE 75%
7 PM 25° Mostly Cloudy 28% 7 mph NE 77%
15-Day Forecast
Today
7/4
Partly Cloudy
23%
19°
28°
Sun
7/5
Mostly Cloudy
31%
19°
27°
Mon
7/6
Clear
6%
18°
27°
Tue
7/7
Mostly Clear
28%
16°
28°
Wed
7/8
Rain
72%
18°
27°
Thu
7/9
Rain
71%
17°
23°
Fri
7/10
Clear
52%
17°
24°
Sat
7/11
Rain
28%
16°
24°
Sun
7/12
Drizzle
43%
12°
24°
Mon
7/13
Drizzle
44%
14°
27°
Tue
7/14
Clear
25%
20°
28°
Wed
7/15
Drizzle
60%
19°
28°
Thu
7/16
Drizzle
60%
18°
26°
Fri
7/17
Drizzle
60%
18°
27°
Sat
7/18
Drizzle
60%
18°
26°
45
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
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. 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 Jul 4, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2118 J/kg
MLCAPE1516 J/kg
MUCAPE2118 J/kg
SBCIN-22 J/kg
MLCIN0 J/kg
Lifted Index-6.6
Kinematics
0–6 km Shear15 kt
0–1 km Shear3 kt
Eff. Shear14 kt
0–1 km SRH-3
0–3 km SRH-79
Eff. SRH-79
Storm Motion255° @ 13 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.0
Thermo & Levels
PWAT1.65 in
0–3 km LR6.3 °C/km
700–500 LR6.0 °C/km
Total Totals47.7
LCL936 hPa
LFC896 hPa
EL185 hPa
Freezing Lvl13,491 ft