Flood Warning — Peoria County, IL, Tazewell County, IL, Woodford County, IL, Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL, Fulton County, IL, Mason County, IL Flood Warning — Cass County, IL, Mason County, IL 7:00 AM Flood Warning — Marshall County, IL, Putnam County, IL, Peoria County, IL, Tazewell County, IL, Woodford County, IL, Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL, Fulton County, IL, Mason County, IL 1:00 AM

Mason County, Illinois, United States

Last updated: 5:55 PM CDT  ·  Refresh
24°C
Feels like 26°
Partly Cloudy
▲ 26°  /  ▼ 17°
Wind
9 mph SW
Humidity
80%
Dew Point
21°
Pressure
29.42 inHg
Visibility
10 mi
UV Index
5.5
Cloud Cover
36%
Sunrise
5:30 AM
Sunset
8:33 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Mason County is currently partly cloudy at 25°C. Precipitation is likely — peak probability 75% around 5 PM. Atmospheric instability is elevated (CAPE up to 1673 J/kg) — isolated convective development possible. Sunrise: 5:30AM · Sunset: 8:33PM.

Alerts

Flood Warning
Peoria County, IL, Tazewell County, IL, Woodford County, IL, Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL, Fulton County, IL, Mason County, IL
Expires
Flood Warning
Cass County, IL, Mason County, IL
Expires 7:00 AM
Flood Warning
Marshall County, IL, Putnam County, IL, Peoria County, IL, Tazewell County, IL, Woodford County, IL, Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL, Fulton County, IL, Mason County, IL
Expires 1:00 AM
35 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
75%
6 PM
26°
63%
7 PM
24°
62%
8 PM
23°
55%
9 PM
21°
39%
10 PM
21°
50%
11 PM
21°
65%
12 AM
20°
61%
1 AM
20°
47%
2 AM
20°
27%
3 AM
20°
8%
4 AM
20°
9%
5 AM
18°
9%
6 AM
19°
9%
7 AM
20°
9%
8 AM
21°
5%
9 AM
23°
5%
10 AM
24°
5%
11 AM
24°
5%
12 PM
26°
5%
1 PM
27°
10%
2 PM
27°
22%
3 PM
27°
25%
4 PM
27°
31%
7-Day Forecast
Today
26° 17°
Partly Cloudy with a 75% chance of rain.
Thu
28° 18°
Overcast with a 65% chance of rain.
Fri
26° 17°
Heavy Rain, 86% chance.
Sat
28° 16°
Drizzle, 55% chance.
Sun
33° 21°
Fog.
Mon
33° 23°
Clear.
Tue
33° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 24° Partly Cloudy 75% 9 mph SW 80%
6 PM 26° Partly Cloudy 63% 10 mph SSW 85%
7 PM 24° Rain 62% 9 mph SSW 87%
8 PM 23° Rain 55% 9 mph SSW 90%
9 PM 21° Rain 39% 9 mph SSW 93%
10 PM 21° Rain 50% 8 mph SSW 94%
11 PM 21° Rain 65% 6 mph SSW 95%
12 AM 20° Rain 61% 5 mph SW 96%
1 AM 20° Partly Cloudy 47% 4 mph SW 97%
2 AM 20° Mostly Cloudy 27% 4 mph SW 97%
3 AM 20° Mostly Cloudy 8% 5 mph SW 97%
4 AM 20° Overcast 9% 5 mph SW 96%
5 AM 18° Mostly Cloudy 9% 4 mph SW 96%
6 AM 19° Overcast 9% 4 mph WSW 96%
7 AM 20° Overcast 9% 4 mph W 93%
8 AM 21° Overcast 5% 4 mph W 89%
9 AM 23° Overcast 5% 4 mph W 86%
10 AM 24° Overcast 5% 4 mph WNW 80%
11 AM 24° Overcast 5% 4 mph WNW 74%
12 PM 26° Overcast 5% 4 mph WNW 69%
1 PM 27° Overcast 10% 4 mph WNW 66%
2 PM 27° Overcast 22% 4 mph WNW 64%
3 PM 27° Overcast 25% 4 mph NW 61%
4 PM 27° Overcast 31% 4 mph NW 63%
15-Day Forecast
Today
6/24
Partly Cloudy
75%
17°
26°
Thu
6/25
Overcast
65%
18°
28°
Fri
6/26
Heavy Rain
86%
17°
26°
Sat
6/27
Drizzle
55%
16°
28°
Sun
6/28
Fog
14%
21°
33°
Mon
6/29
Clear
9%
23°
33°
Tue
6/30
Clear
14%
23°
33°
Wed
7/1
Clear
38%
23°
35°
Thu
7/2
Thunderstorm
66%
24°
36°
Fri
7/3
Thunderstorm
63%
23°
33°
Sat
7/4
Drizzle
63%
22°
28°
Sun
7/5
Drizzle
66%
20°
29°
Mon
7/6
Drizzle
66%
19°
29°
Tue
7/7
Drizzle
66%
19°
29°
Wed
7/8
Drizzle
66%
18°
29°
35
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
33 AQI 6.0 µg/m³
O3
Ground-level ozone
Dominant
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 35 Good 35 33
Fri 36 Good 36 26
Sat 29 Good 29 29
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 Jun 24, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 100 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2130 J/kg
MLCAPE1403 J/kg
MUCAPE2130 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-5.5
Kinematics
0–6 km Shear35 kt
0–1 km Shear12 kt
Eff. Shear36 kt
0–1 km SRH10
0–3 km SRH-32
Eff. SRH-32
Storm Motion249° @ 30 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index34.3
Thermo & Levels
PWAT1.55 in
0–3 km LR6.8 °C/km
700–500 LR5.4 °C/km
Total Totals48.6
LCL946 hPa
LFC996 hPa
EL190 hPa
Freezing Lvl13,199 ft