Union County, Iowa, United States

Last updated: 6:17 PM CDT  ·  Refresh
31°C
Feels like 32°
Mostly Clear
▲ 32°  /  ▼ 19°
Wind
10 mph ESE
Humidity
51%
Dew Point
21°
Pressure
28.64 inHg
Visibility
10 mi
UV Index
5.2
Cloud Cover
15%
Sunrise
6:10 AM
Sunset
8:36 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently mostly clear at 31°C. Precipitation is likely — peak probability 57% around 6 PM. Atmospheric instability is elevated (CAPE up to 993 J/kg) — isolated convective development possible. Sunrise: 6:10AM · Sunset: 8:36PM.

Alerts

No active alerts for this location.
61 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
14%
7 PM
31°
29%
8 PM
29°
29%
9 PM
27°
21%
10 PM
26°
20%
11 PM
24°
20%
12 AM
23°
14%
1 AM
23°
3%
2 AM
22°
4%
3 AM
21°
4%
4 AM
20°
4%
5 AM
19°
4%
6 AM
19°
8%
7 AM
19°
8%
8 AM
21°
13%
9 AM
23°
21%
10 AM
25°
30%
11 AM
26°
31%
12 PM
27°
31%
1 PM
29°
35%
2 PM
29°
40%
3 PM
29°
45%
4 PM
29°
45%
5 PM
29°
48%
7-Day Forecast
Tonight
32° 19°
Mostly Clear with a 21% chance of rain.
Thu
31° 19°
Rain, 57% chance.
Fri
31° 17°
Rain, 87% chance.
Sat
27° 16°
Mostly Clear.
Sun
31° 18°
Clear.
Mon
32° 18°
Rain, 50% chance.
Tue
33° 18°
Mostly Clear with a 38% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 31° Mostly Clear 14% 10 mph ESE 51%
7 PM 31° Clear 29% 10 mph ESE 51%
8 PM 29° Clear 29% 8 mph ESE 59%
9 PM 27° Clear 21% 7 mph ESE 67%
10 PM 26° Clear 20% 7 mph SE 74%
11 PM 24° Clear 20% 7 mph SE 75%
12 AM 23° Mostly Clear 14% 7 mph SE 76%
1 AM 23° Mostly Clear 3% 8 mph SE 77%
2 AM 22° Mostly Clear 4% 7 mph SE 80%
3 AM 21° Partly Cloudy 4% 7 mph SE 82%
4 AM 20° Partly Cloudy 4% 7 mph SE 84%
5 AM 19° Partly Cloudy 4% 7 mph SE 84%
6 AM 19° Mostly Cloudy 8% 7 mph SE 84%
7 AM 19° Mostly Cloudy 8% 8 mph SSE 81%
8 AM 21° Partly Cloudy 13% 10 mph SSE 72%
9 AM 23° Mostly Cloudy 21% 11 mph SSE 64%
10 AM 25° Mostly Cloudy 30% 11 mph SSE 58%
11 AM 26° Mostly Cloudy 31% 12 mph SSE 54%
12 PM 27° Mostly Cloudy 31% 12 mph SSE 51%
1 PM 29° Mostly Cloudy 35% 12 mph SSE 48%
2 PM 29° Mostly Cloudy 40% 11 mph SSE 50%
3 PM 29° Mostly Cloudy 45% 11 mph SSE 51%
4 PM 29° Rain 45% 11 mph SSE 54%
5 PM 29° Rain 48% 10 mph SSE 60%
15-Day Forecast
Today
7/29
Mostly Clear
21%
19°
32°
Thu
7/30
Rain
57%
19°
31°
Fri
7/31
Rain
87%
17°
31°
Sat
8/1
Mostly Clear
15%
16°
27°
Sun
8/2
Clear
3%
18°
31°
Mon
8/3
Rain
50%
18°
32°
Tue
8/4
Mostly Clear
38%
18°
33°
Wed
8/5
Drizzle
54%
19°
32°
Thu
8/6
Drizzle
46%
19°
32°
Fri
8/7
Mostly Clear
40%
20°
34°
Sat
8/8
Rain
54%
21°
36°
Sun
8/9
Drizzle
60%
22°
34°
Mon
8/10
Drizzle
60%
21°
34°
Tue
8/11
Drizzle
60%
21°
34°
Wed
8/12
Drizzle
60%
21°
35°
61
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
61 AQI 14.8 µg/m³
O3
Ground-level ozone
41 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 61 Moderate 41 61
Fri 61 Moderate 41 61
Sat 57 Moderate 31 57
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 Wed Jul 29, 22:00'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
SBCAPE1273 J/kg
MLCAPE682 J/kg
MUCAPE1273 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.6
Kinematics
0–6 km Shear30 kt
0–1 km Shear2 kt
Eff. Shear32 kt
0–1 km SRH0
0–3 km SRH-29
Eff. SRH-29
Storm Motion234° @ 15 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.3
Thermo & Levels
PWAT1.68 in
0–3 km LR7.3 °C/km
700–500 LR5.7 °C/km
Total Totals46.6
LCL840 hPa
LFC970 hPa
EL187 hPa
Freezing Lvl15,413 ft