Heat Advisory — Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO 8:00 PM

Jefferson County, Iowa, United States

Last updated: 5:14 AM CDT  ·  Refresh
24°C
Feels like 26°
Mostly Cloudy
▲ 34°  /  ▼ 21°
Wind
5 mph S
Humidity
85%
Dew Point
22°
Pressure
29.09 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
66%
Sunrise
6:13 AM
Sunset
8:11 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently mostly cloudy at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3165 J/kg) — isolated convective development possible. Sunrise: 6:13AM · Sunset: 8:11PM.

Alerts

Heat Advisory
Jefferson, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO
Expires 8:00 PM
50 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
9%
6 AM
22°
34%
7 AM
22°
39%
8 AM
24°
40%
9 AM
25°
27%
10 AM
27°
37%
11 AM
28°
37%
12 PM
30°
38%
1 PM
32°
22%
2 PM
32°
27%
3 PM
33°
34%
4 PM
33°
32%
5 PM
33°
32%
6 PM
32°
23%
7 PM
30°
19%
8 PM
29°
19%
9 PM
27°
20%
10 PM
26°
11%
11 PM
26°
11%
12 AM
24°
11%
1 AM
25°
17%
2 AM
24°
27%
3 AM
24°
27%
4 AM
24°
37%
7-Day Forecast
Today
34° 21°
Mostly Cloudy with a 40% chance of rain.
Wed
31° 21°
Partly Cloudy with a 62% chance of rain.
Thu
30° 21°
Rain, 90% chance.
Fri
28° 18°
Overcast with a 73% chance of rain.
Sat
36° 22°
Mostly Clear with a 52% chance of rain.
Sun
31° 18°
Drizzle, 46% chance.
Mon
29° 17°
Clear with a 25% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Cloudy 9% 5 mph S 85%
6 AM 22° Overcast 34% 6 mph S 83%
7 AM 22° Mostly Cloudy 39% 7 mph SSE 85%
8 AM 24° Mostly Cloudy 40% 7 mph SSW 82%
9 AM 25° Mostly Cloudy 27% 8 mph SW 76%
10 AM 27° Mostly Cloudy 37% 10 mph SW 71%
11 AM 28° Mostly Cloudy 37% 10 mph WSW 66%
12 PM 30° Mostly Cloudy 38% 10 mph SW 61%
1 PM 32° Mostly Cloudy 22% 9 mph SW 57%
2 PM 32° Mostly Cloudy 27% 7 mph WSW 54%
3 PM 33° Partly Cloudy 34% 7 mph WSW 52%
4 PM 33° Partly Cloudy 32% 6 mph WSW 52%
5 PM 33° Mostly Cloudy 32% 6 mph SW 58%
6 PM 32° Partly Cloudy 23% 6 mph SSW 65%
7 PM 30° Mostly Clear 19% 6 mph SE 72%
8 PM 29° Mostly Clear 19% 5 mph E 77%
9 PM 27° Clear 20% 6 mph E 83%
10 PM 26° Clear 11% 6 mph E 87%
11 PM 26° Mostly Clear 11% 6 mph E 88%
12 AM 24° Partly Cloudy 11% 5 mph E 88%
1 AM 25° Partly Cloudy 17% 6 mph ENE 89%
2 AM 24° Partly Cloudy 27% 5 mph ENE 89%
3 AM 24° Partly Cloudy 27% 5 mph ENE 89%
4 AM 24° Mostly Clear 37% 5 mph ENE 89%
15-Day Forecast
Today
8/11
Mostly Cloudy
40%
21°
34°
Wed
8/12
Partly Cloudy
62%
21°
31°
Thu
8/13
Rain
90%
21°
30°
Fri
8/14
Overcast
73%
18°
28°
Sat
8/15
Mostly Clear
52%
22°
36°
Sun
8/16
Drizzle
46%
18°
31°
Mon
8/17
Clear
25%
17°
29°
Tue
8/18
Partly Cloudy
34%
18°
34°
Wed
8/19
Partly Cloudy
35%
20°
35°
Thu
8/20
Mostly Clear
35%
21°
41°
Fri
8/21
Drizzle
60%
19°
41°
Sat
8/22
Drizzle
60%
19°
33°
Sun
8/23
Drizzle
60%
18°
31°
Mon
8/24
Drizzle
60%
18°
31°
Tue
8/25
Drizzle
60%
18°
30°
50
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
50 AQI 9.0 µg/m³
O3
Ground-level ozone
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 50 Good 37 50
Wed 41 Good 33 41
Thu 40 Good 34 40
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 Tue Aug 11, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1686 J/kg
MLCAPE1935 J/kg
MUCAPE2621 J/kg
SBCIN-536 J/kg
MLCIN0 J/kg
Lifted Index-6.1
Kinematics
0–6 km Shear29 kt
0–1 km Shear30 kt
Eff. Shear22 kt
0–1 km SRH225
0–3 km SRH227
Eff. SRH25
Storm Motion311° @ 19 kt
0–1 km EHI2.4
Composite Parameters
Sig. Tornado1.3
STP (eff)0.0
Supercell0.7
K-Index36.0
Thermo & Levels
PWAT1.70 in
0–3 km LR3.8 °C/km
700–500 LR8.1 °C/km
Total Totals56.1
LCL961 hPa
LFC647 hPa
EL186 hPa
Freezing Lvl14,780 ft