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

Polk County, Iowa, United States

Last updated: 12:43 AM CDT  ·  Refresh
26°C
Feels like 26°
Clear
▲ 34°  /  ▼ 21°
Wind
9 mph S
Humidity
62%
Dew Point
19°
Pressure
28.85 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
10%
Sunrise
6:39 AM
Sunset
7:49 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Polk County is currently clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2453 J/kg) — isolated convective development possible. Sunrise: 6:39AM · Sunset: 7:49PM.

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
59 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
16%
1 AM
26°
15%
2 AM
26°
15%
3 AM
25°
15%
4 AM
24°
7%
5 AM
23°
7%
6 AM
23°
4%
7 AM
24°
9%
8 AM
26°
9%
9 AM
25°
31%
10 AM
27°
16%
11 AM
29°
16%
12 PM
31°
16%
1 PM
32°
17%
2 PM
32°
19%
3 PM
32°
19%
4 PM
31°
29%
5 PM
33°
20%
6 PM
32°
18%
7 PM
31°
19%
8 PM
29°
19%
9 PM
28°
19%
10 PM
27°
19%
11 PM
27°
20%
7-Day Forecast
Today
34° 21°
Partly Cloudy with a 31% chance of rain.
Tue
39° 21°
Mostly Clear with a 22% chance of rain.
Wed
36° 23°
Partly Cloudy with a 21% chance of rain.
Thu
39° 22°
Clear with a 45% chance of rain.
Fri
41° 23°
Rain, 29% chance.
Sat
38° 21°
Rain, 43% chance.
Sun
36° 19°
Clear with a 44% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 16% 9 mph S 62%
1 AM 26° Mostly Clear 15% 8 mph S 58%
2 AM 26° Partly Cloudy 15% 8 mph S 60%
3 AM 25° Partly Cloudy 15% 8 mph SSW 61%
4 AM 24° Mostly Cloudy 7% 8 mph SSW 62%
5 AM 23° Mostly Cloudy 7% 8 mph SSW 64%
6 AM 23° Partly Cloudy 4% 7 mph SSW 66%
7 AM 24° Partly Cloudy 9% 7 mph SSW 64%
8 AM 26° Partly Cloudy 9% 8 mph SW 60%
9 AM 25° Rain 31% 9 mph WSW 55%
10 AM 27° Partly Cloudy 16% 8 mph WSW 51%
11 AM 29° Partly Cloudy 16% 7 mph WSW 49%
12 PM 31° Partly Cloudy 16% 7 mph WSW 46%
1 PM 32° Partly Cloudy 17% 6 mph SW 46%
2 PM 32° Partly Cloudy 19% 6 mph SW 47%
3 PM 32° Mostly Cloudy 19% 7 mph WSW 48%
4 PM 31° Mostly Cloudy 29% 7 mph WSW 50%
5 PM 33° Mostly Cloudy 20% 6 mph WSW 52%
6 PM 32° Mostly Cloudy 18% 7 mph W 54%
7 PM 31° Partly Cloudy 19% 6 mph WSW 58%
8 PM 29° Partly Cloudy 19% 6 mph SW 61%
9 PM 28° Partly Cloudy 19% 6 mph SSW 65%
10 PM 27° Partly Cloudy 19% 6 mph SSW 67%
11 PM 27° Partly Cloudy 20% 5 mph SSW 69%
15-Day Forecast
Today
8/31
Partly Cloudy
31%
21°
34°
Tue
9/1
Mostly Clear
22%
21°
39°
Wed
9/2
Partly Cloudy
21%
23°
36°
Thu
9/3
Clear
45%
22°
39°
Fri
9/4
Rain
29%
23°
41°
Sat
9/5
Rain
43%
21°
38°
Sun
9/6
Clear
44%
19°
36°
Mon
9/7
Drizzle
43%
19°
38°
Tue
9/8
Clear
44%
21°
44°
Wed
9/9
Clear
36%
21°
43°
Thu
9/10
Drizzle
60%
18°
37°
Fri
9/11
Drizzle
60%
17°
32°
Sat
9/12
Drizzle
60%
17°
32°
Sun
9/13
Drizzle
60%
18°
33°
Mon
9/14
Drizzle
60%
16°
29°
59
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
59 AQI 13.4 µg/m³
O3
Ground-level ozone
38 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 59 Moderate 38 59
Tue 61 Moderate 34 61
Wed 59 Moderate 42 59
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
SBCAPE130 J/kg
MLCAPE94 J/kg
MUCAPE1050 J/kg
SBCIN-782 J/kg
MLCIN-588 J/kg
Lifted Index-1.3
Kinematics
0–6 km Shear26 kt
0–1 km Shear37 kt
Eff. Shear11 kt
0–1 km SRH412
0–3 km SRH451
Eff. SRH-9
Storm Motion280° @ 23 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.2
STP (eff)0.0
Supercell0.0
K-Index32.3
Thermo & Levels
PWAT1.66 in
0–3 km LR4.3 °C/km
700–500 LR7.2 °C/km
Total Totals47.4
LCL891 hPa
LFC556 hPa
EL245 hPa
Freezing Lvl15,564 ft