Flood Warning — Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL Flood Warning — Cass County, IL, Fulton County, IL, Mason County, IL, Brown County, IL, Morgan County, IL, Schuyler County, IL

Cass County, Illinois, United States

Last updated: 12:28 PM CDT  ·  Refresh
26°C
Feels like 26°
Clear
▲ 27°  /  ▼ 17°
Wind
9 mph NNW
Humidity
69%
Dew Point
18°
Pressure
29.43 inHg
Visibility
10 mi
UV Index
9.2
Cloud Cover
9%
Sunrise
6:14 AM
Sunset
7:54 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cass County is currently clear at 26°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:14AM · Sunset: 7:54PM.

Alerts

Flood Warning
Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL
Expires
Flood Warning
Cass County, IL, Fulton County, IL, Mason County, IL, Brown County, IL, Morgan County, IL, Schuyler County, IL
Expires
31 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
4%
1 PM
24°
4%
2 PM
24°
4%
3 PM
24°
4%
4 PM
23°
3%
5 PM
26°
3%
6 PM
24°
3%
7 PM
23°
3%
8 PM
22°
3%
9 PM
21°
3%
10 PM
20°
3%
11 PM
20°
3%
12 AM
19°
3%
1 AM
19°
3%
2 AM
18°
3%
3 AM
18°
3%
4 AM
18°
3%
5 AM
17°
3%
6 AM
17°
3%
7 AM
17°
3%
8 AM
18°
3%
9 AM
19°
3%
10 AM
21°
3%
11 AM
21°
3%
7-Day Forecast
Today
27° 17°
Partly Cloudy.
Tue
27° 17°
Partly Cloudy with a 52% chance of rain.
Wed
26° 18°
Fog with a 72% chance of rain.
Thu
24° 16°
Clear with a 50% chance of rain.
Fri
25° 14°
Clear.
Sat
26° 15°
Drizzle, 51% chance.
Sun
26° 16°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 4% 9 mph NNW 69%
1 PM 24° Partly Cloudy 4% 9 mph NNW 64%
2 PM 24° Partly Cloudy 4% 9 mph NNW 63%
3 PM 24° Mostly Clear 4% 9 mph NNW 63%
4 PM 23° Partly Cloudy 3% 8 mph NNW 64%
5 PM 26° Mostly Cloudy 3% 7 mph NNW 67%
6 PM 24° Mostly Cloudy 3% 6 mph NNW 72%
7 PM 23° Partly Cloudy 3% 5 mph NNW 76%
8 PM 22° Partly Cloudy 3% 4 mph NNW 78%
9 PM 21° Partly Cloudy 3% 3 mph NNW 80%
10 PM 20° Partly Cloudy 3% 2 mph NW 82%
11 PM 20° Partly Cloudy 3% 1 mph WSW 85%
12 AM 19° Mostly Clear 3% 3 mph SSW 88%
1 AM 19° Mostly Clear 3% 4 mph SSW 90%
2 AM 18° Mostly Clear 3% 4 mph SSW 91%
3 AM 18° Partly Cloudy 3% 4 mph SSW 92%
4 AM 18° Partly Cloudy 3% 5 mph SSW 93%
5 AM 17° Partly Cloudy 3% 5 mph SSW 93%
6 AM 17° Partly Cloudy 3% 5 mph SSW 93%
7 AM 17° Partly Cloudy 3% 6 mph SSW 91%
8 AM 18° Mostly Cloudy 3% 6 mph SSW 87%
9 AM 19° Mostly Cloudy 3% 6 mph SSW 83%
10 AM 21° Mostly Cloudy 3% 6 mph SSW 79%
11 AM 21° Mostly Cloudy 3% 6 mph SW 75%
15-Day Forecast
Today
8/17
Partly Cloudy
4%
17°
27°
Tue
8/18
Partly Cloudy
52%
17°
27°
Wed
8/19
Fog
72%
18°
26°
Thu
8/20
Clear
50%
16°
24°
Fri
8/21
Clear
16%
14°
25°
Sat
8/22
Drizzle
51%
15°
26°
Sun
8/23
Clear
8%
16°
26°
Mon
8/24
Drizzle
42%
18°
27°
Tue
8/25
Drizzle
44%
17°
28°
Wed
8/26
Clear
44%
18°
27°
Thu
8/27
Drizzle
60%
17°
27°
Fri
8/28
Drizzle
60%
17°
26°
Sat
8/29
Drizzle
60%
17°
26°
Sun
8/30
Drizzle
60%
17°
27°
Mon
8/31
Drizzle
60%
17°
27°
31
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
28 AQI 5.1 µg/m³
O3
Ground-level ozone
Dominant
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 31 Good 31 28
Wed 39 Good 34 39
Thu 34 Good 34 21
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 17, 16:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE35 J/kg
MLCAPE2 J/kg
MUCAPE35 J/kg
SBCIN-24 J/kg
MLCIN0 J/kg
Lifted Index1.5
Kinematics
0–6 km Shear19 kt
0–1 km Shear5 kt
Eff. Shear—
0–1 km SRH4
0–3 km SRH53
Eff. SRH—
Storm Motion324° @ 30 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index7.0
Thermo & Levels
PWAT1.05 in
0–3 km LR5.0 °C/km
700–500 LR6.0 °C/km
Total Totals36.2
LCL898 hPa
LFC878 hPa
EL790 hPa
Freezing Lvl15,092 ft