Extreme Heat Warning — Bond, IL, Clinton, IL, Marion, IL, Boone, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO 9:00 PM Heat Advisory — Bond, IL, Clinton, IL, Marion, IL, Boone, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO 7:00 PM Excessive Heat Watch 7:00 PM

Marion County, Illinois, United States

Last updated: 4:17 PM CDT  ·  Refresh
34°C
Feels like 43°
Partly Cloudy
▲ 34°  /  ▼ 23°
Wind
9 mph WSW
Humidity
60%
Dew Point
24°
Pressure
29.23 inHg
Visibility
10 mi
UV Index
7.4
Cloud Cover
30%
Sunrise
5:53 AM
Sunset
8:10 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Marion County is currently partly cloudy at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3215 J/kg) — isolated convective development possible. Sunrise: 5:53AM · Sunset: 8:10PM.

Alerts

Extreme Heat Warning
Bond, IL, Clinton, IL, Marion, IL, Boone, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO
Expires 9:00 PM
Heat Advisory
Bond, IL, Clinton, IL, Marion, IL, Boone, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO
Expires 7:00 PM
Excessive Heat Watch
Expires 7:00 PM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
3%
5 PM
34°
21%
6 PM
34°
21%
7 PM
32°
21%
8 PM
31°
26%
9 PM
29°
26%
10 PM
28°
23%
11 PM
28°
23%
12 AM
27°
20%
1 AM
27°
8%
2 AM
27°
5%
3 AM
26°
5%
4 AM
26°
5%
5 AM
25°
5%
6 AM
24°
3%
7 AM
25°
3%
8 AM
27°
3%
9 AM
28°
3%
10 AM
29°
5%
11 AM
31°
5%
12 PM
31°
5%
1 PM
32°
5%
2 PM
32°
5%
3 PM
31°
5%
7-Day Forecast
Today
34° 23°
Partly Cloudy with a 23% chance of rain.
Tue
33° 20°
Partly Cloudy.
Wed
30° 17°
Clear.
Thu
30° 18°
Partly Cloudy with a 51% chance of rain.
Fri
27° 20°
Rain, 82% chance.
Sat
27° 19°
Rain, 82% chance.
Sun
28° 18°
Clear with a 31% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Partly Cloudy 3% 9 mph WSW 60%
5 PM 34° Partly Cloudy 21% 7 mph WSW 62%
6 PM 34° Partly Cloudy 21% 7 mph SW 66%
7 PM 32° Mostly Cloudy 21% 6 mph SW 70%
8 PM 31° Mostly Clear 26% 6 mph SW 73%
9 PM 29° Clear 26% 7 mph SW 75%
10 PM 28° Clear 23% 7 mph SW 77%
11 PM 28° Clear 23% 7 mph SW 78%
12 AM 27° Clear 20% 7 mph WSW 78%
1 AM 27° Clear 8% 7 mph WSW 78%
2 AM 27° Clear 5% 8 mph WSW 78%
3 AM 26° Mostly Clear 5% 8 mph WSW 78%
4 AM 26° Mostly Clear 5% 9 mph WSW 78%
5 AM 25° Mostly Clear 5% 8 mph W 80%
6 AM 24° Mostly Clear 3% 8 mph WNW 83%
7 AM 25° Partly Cloudy 3% 8 mph WNW 84%
8 AM 27° Partly Cloudy 3% 9 mph NW 80%
9 AM 28° Partly Cloudy 3% 10 mph NNW 77%
10 AM 29° Partly Cloudy 5% 10 mph NNW 74%
11 AM 31° Partly Cloudy 5% 10 mph NNW 72%
12 PM 31° Mostly Cloudy 5% 10 mph N 70%
1 PM 32° Mostly Cloudy 5% 11 mph N 69%
2 PM 32° Mostly Cloudy 5% 10 mph N 69%
3 PM 31° Overcast 5% 10 mph N 70%
15-Day Forecast
Today
7/27
Partly Cloudy
23%
23°
34°
Tue
7/28
Partly Cloudy
8%
20°
33°
Wed
7/29
Clear
3%
17°
30°
Thu
7/30
Partly Cloudy
51%
18°
30°
Fri
7/31
Rain
82%
20°
27°
Sat
8/1
Rain
82%
19°
27°
Sun
8/2
Clear
31%
18°
28°
Mon
8/3
Clear
18%
18°
29°
Tue
8/4
Clear
44%
19°
32°
Wed
8/5
Rain
68%
21°
32°
Thu
8/6
Clear
60%
22°
32°
Fri
8/7
Drizzle
60%
21°
32°
Sat
8/8
Drizzle
60%
21°
32°
Sun
8/9
Drizzle
60%
21°
31°
Mon
8/10
Drizzle
60%
21°
31°
52
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
52 AQI 9.8 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 52 Moderate 39 52
Wed 51 Moderate 35 51
Thu 39 Good 34 39
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 Jul 27, 20:00'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
SBCAPE4116 J/kg
MLCAPE3190 J/kg
MUCAPE4116 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-9.0
Kinematics
0–6 km Shear26 kt
0–1 km Shear5 kt
Eff. Shear38 kt
0–1 km SRH11
0–3 km SRH9
Eff. SRH9
Storm Motion264° @ 29 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.1
STP (eff)0.1
Supercell0.7
K-Index24.4
Thermo & Levels
PWAT1.59 in
0–3 km LR7.3 °C/km
700–500 LR6.6 °C/km
Total Totals48.4
LCL858 hPa
LFC990 hPa
EL137 hPa
Freezing Lvl15,722 ft