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 — Fulton County, IL, Knox County, IL, Piatt County, IL, Cass County, IL, Mason County, IL 2:30 PM Flood Warning — Piatt County, IL, Cass County, IL, Mason County, IL 7:00 AM 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 7:00 PM

Mason County, Illinois, United States

Last updated: 4:56 PM CDT  ·  Refresh
26°C
Feels like 27°
Partly Cloudy
▲ 26°  /  ▼ 16°
Wind
2 mph NNW
Humidity
57%
Dew Point
15°
Pressure
29.61 inHg
Visibility
10 mi
UV Index
6.5
Cloud Cover
48%
Sunrise
5:30 AM
Sunset
8:32 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Mason County is currently partly cloudy at 25°C. Precipitation is likely — peak probability 59% around 4 PM. Atmospheric instability is elevated (CAPE up to 864 J/kg) — isolated convective development possible. Sunrise: 5:30AM · Sunset: 8:32PM.

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
Fulton County, IL, Knox County, IL, Piatt County, IL, Cass County, IL, Mason County, IL
Expires 2:30 PM
Flood Warning
Piatt County, IL, Cass County, IL, Mason County, IL
Expires 7:00 AM
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 7:00 PM
41 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
7%
5 PM
26°
24%
6 PM
26°
26%
7 PM
24°
27%
8 PM
23°
25%
9 PM
21°
23%
10 PM
20°
23%
11 PM
19°
23%
12 AM
19°
16%
1 AM
18°
3%
2 AM
18°
5%
3 AM
18°
5%
4 AM
18°
5%
5 AM
16°
5%
6 AM
17°
9%
7 AM
18°
24%
8 AM
19°
29%
9 AM
21°
39%
10 AM
21°
49%
11 AM
23°
45%
12 PM
23°
41%
1 PM
24°
41%
2 PM
24°
47%
3 PM
24°
47%
7-Day Forecast
Today
26° 16°
Rain, 27% chance.
Wed
27° 16°
Rain, 58% chance.
Thu
29° 17°
Rain, 74% chance.
Fri
25° 19°
Rain, 90% chance.
Sat
30° 19°
Drizzle, 62% chance.
Sun
32° 21°
Clear with a 53% chance of rain.
Mon
32° 23°
Clear with a 24% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 26° Partly Cloudy 7% 2 mph NNW 57%
5 PM 26° Partly Cloudy 24% 2 mph NNE 62%
6 PM 26° Rain 26% 2 mph ESE 67%
7 PM 24° Rain 27% 3 mph SE 74%
8 PM 23° Rain 25% 4 mph SE 76%
9 PM 21° Rain 23% 4 mph SE 80%
10 PM 20° Rain 23% 4 mph SSE 81%
11 PM 19° Rain 23% 5 mph SSE 82%
12 AM 19° Drizzle 16% 6 mph SSE 83%
1 AM 18° Partly Cloudy 3% 6 mph SSE 83%
2 AM 18° Partly Cloudy 5% 6 mph SSE 84%
3 AM 18° Partly Cloudy 5% 6 mph SSE 85%
4 AM 18° Partly Cloudy 5% 6 mph SSE 85%
5 AM 16° Partly Cloudy 5% 6 mph S 85%
6 AM 17° Partly Cloudy 9% 7 mph S 85%
7 AM 18° Partly Cloudy 24% 8 mph S 81%
8 AM 19° Partly Cloudy 29% 9 mph S 78%
9 AM 21° Drizzle 39% 10 mph S 76%
10 AM 21° Drizzle 49% 9 mph S 77%
11 AM 23° Drizzle 45% 10 mph S 77%
12 PM 23° Drizzle 41% 10 mph S 77%
1 PM 24° Drizzle 41% 10 mph SSW 78%
2 PM 24° Rain 47% 10 mph SSW 79%
3 PM 24° Rain 47% 10 mph SSW 80%
15-Day Forecast
Today
6/23
Rain
27%
16°
26°
Wed
6/24
Rain
58%
16°
27°
Thu
6/25
Rain
74%
17°
29°
Fri
6/26
Rain
90%
19°
25°
Sat
6/27
Drizzle
62%
19°
30°
Sun
6/28
Clear
53%
21°
32°
Mon
6/29
Clear
24%
23°
32°
Tue
6/30
Clear
38%
23°
33°
Wed
7/1
Thunderstorm
66%
23°
32°
Thu
7/2
Drizzle
63%
23°
32°
Fri
7/3
Clear
47%
23°
28°
Sat
7/4
Drizzle
66%
21°
29°
Sun
7/5
Drizzle
66%
19°
28°
Mon
7/6
Drizzle
66%
19°
28°
Tue
7/7
Drizzle
66%
19°
28°
41
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
32 AQI 5.9 µg/m³
O3
Ground-level ozone
Dominant
41 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 41 Good 41 32
Thu 40 Good 40 38
Fri 39 Good 39 15
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 Jun 23, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE121 J/kg
MLCAPE38 J/kg
MUCAPE121 J/kg
SBCIN-3 J/kg
MLCIN-0 J/kg
Lifted Index1.8
Kinematics
0–6 km Shear30 kt
0–1 km Shear3 kt
Eff. Shear7 kt
0–1 km SRH-12
0–3 km SRH-76
Eff. SRH-76
Storm Motion254° @ 18 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index25.3
Thermo & Levels
PWAT1.17 in
0–3 km LR7.3 °C/km
700–500 LR4.7 °C/km
Total Totals39.2
LCL864 hPa
LFC872 hPa
EL685 hPa
Freezing Lvl13,845 ft