Heat Advisory — Dallas, IA, Polk, IA, Jasper, IA, Poweshiek, IA, Madison, IA, Warren, IA, Marion, IA, Mahaska, IA, Union, IA, Clarke, IA, Lucas, IA, Monroe, IA, Wapello, IA, Ringgold, IA, Decatur, IA, Wayne, IA, Appanoose, IA, Davis, IA 7:00 PM

Union County, Iowa, United States

Last updated: 12:53 AM CDT  ·  Refresh
27°C
Feels like 24°
Mostly Clear
▲ 36°  /  ▼ 21°
Wind
13 mph S
Humidity
53%
Dew Point
18°
Pressure
28.54 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
27%
Sunrise
6:42 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently mostly clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2071 J/kg) — isolated convective development possible. Sunrise: 6:42AM · Sunset: 7:50PM.

Alerts

Heat Advisory
Dallas, IA, Polk, IA, Jasper, IA, Poweshiek, IA, Madison, IA, Warren, IA, Marion, IA, Mahaska, IA, Union, IA, Clarke, IA, Lucas, IA, Monroe, IA, Wapello, IA, Ringgold, IA, Decatur, IA, Wayne, IA, Appanoose, IA, Davis, IA
Expires 7:00 PM
56 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
16%
1 AM
27°
15%
2 AM
26°
15%
3 AM
26°
15%
4 AM
26°
7%
5 AM
23°
7%
6 AM
23°
7%
7 AM
24°
4%
8 AM
26°
4%
9 AM
27°
5%
10 AM
28°
16%
11 AM
30°
16%
12 PM
31°
7%
1 PM
34°
15%
2 PM
34°
18%
3 PM
34°
22%
4 PM
34°
32%
5 PM
34°
32%
6 PM
33°
29%
7 PM
32°
29%
8 PM
30°
29%
9 PM
28°
29%
10 PM
27°
29%
11 PM
27°
24%
7-Day Forecast
Today
36° 21°
Partly Cloudy with a 29% chance of rain.
Tue
41° 21°
Partly Cloudy.
Wed
38° 24°
Clear.
Thu
41° 23°
Clear with a 37% chance of rain.
Fri
41° 23°
Clear with a 21% chance of rain.
Sat
41° 20°
Rain, 43% chance.
Sun
37° 19°
Clear with a 44% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 16% 13 mph S 53%
1 AM 27° Partly Cloudy 15% 14 mph SSW 51%
2 AM 26° Partly Cloudy 15% 14 mph SSW 52%
3 AM 26° Partly Cloudy 15% 14 mph SSW 52%
4 AM 26° Partly Cloudy 7% 14 mph SSW 52%
5 AM 23° Mostly Clear 7% 14 mph SSW 53%
6 AM 23° Partly Cloudy 7% 14 mph SW 55%
7 AM 24° Partly Cloudy 4% 13 mph SW 54%
8 AM 26° Partly Cloudy 4% 13 mph SW 51%
9 AM 27° Partly Cloudy 5% 12 mph SW 47%
10 AM 28° Partly Cloudy 16% 11 mph SW 44%
11 AM 30° Partly Cloudy 16% 10 mph SW 42%
12 PM 31° Mostly Cloudy 7% 9 mph WSW 40%
1 PM 34° Mostly Cloudy 15% 9 mph WSW 38%
2 PM 34° Partly Cloudy 18% 8 mph WSW 38%
3 PM 34° Mostly Cloudy 22% 8 mph WSW 38%
4 PM 34° Mostly Cloudy 32% 6 mph WSW 40%
5 PM 34° Partly Cloudy 32% 5 mph WSW 44%
6 PM 33° Partly Cloudy 29% 6 mph W 47%
7 PM 32° Partly Cloudy 29% 6 mph WSW 52%
8 PM 30° Partly Cloudy 29% 5 mph SSW 57%
9 PM 28° Partly Cloudy 29% 6 mph SSE 62%
10 PM 27° Partly Cloudy 29% 6 mph S 64%
11 PM 27° Partly Cloudy 24% 5 mph SSW 64%
15-Day Forecast
Today
8/31
Partly Cloudy
29%
21°
36°
Tue
9/1
Partly Cloudy
17%
21°
41°
Wed
9/2
Clear
14%
24°
38°
Thu
9/3
Clear
37%
23°
41°
Fri
9/4
Clear
21%
23°
41°
Sat
9/5
Rain
43%
20°
41°
Sun
9/6
Clear
44%
19°
37°
Mon
9/7
Drizzle
43%
19°
40°
Tue
9/8
Clear
44%
21°
44°
Wed
9/9
Clear
36%
21°
43°
Thu
9/10
Drizzle
60%
18°
39°
Fri
9/11
Drizzle
60%
18°
33°
Sat
9/12
Clear
60%
18°
33°
Sun
9/13
Drizzle
60%
19°
34°
Mon
9/14
Drizzle
60%
16°
31°
56
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
56 AQI 11.6 µg/m³
O3
Ground-level ozone
42 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 56 Moderate 42 56
Tue 54 Moderate 37 54
Wed 52 Moderate 42 52
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 Mon Aug 31, 04:00'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
SBCAPE26 J/kg
MLCAPE35 J/kg
MUCAPE508 J/kg
SBCIN-826 J/kg
MLCIN0 J/kg
Lifted Index-0.6
Kinematics
0–6 km Shear21 kt
0–1 km Shear31 kt
Eff. Shear10 kt
0–1 km SRH318
0–3 km SRH372
Eff. SRH3
Storm Motion282° @ 21 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.0
Thermo & Levels
PWAT1.60 in
0–3 km LR4.9 °C/km
700–500 LR7.1 °C/km
Total Totals46.8
LCL848 hPa
LFC523 hPa
EL439 hPa
Freezing Lvl15,338 ft