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

Brown County, Illinois, United States

Last updated: 12:25 PM CDT  ·  Refresh
26°C
Feels like 26°
Clear
▲ 27°  /  ▼ 17°
Wind
9 mph NNW
Humidity
68%
Dew Point
18°
Pressure
29.38 inHg
Visibility
10 mi
UV Index
9.2
Cloud Cover
8%
Sunrise
6:16 AM
Sunset
7:56 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Brown County is currently clear at 26°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:16AM · Sunset: 7:56PM.

Alerts

Flood Warning
Cass County, IL, Fulton County, IL, Mason County, IL
Expires
Flood Warning
Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL
Expires
33 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
3%
1 PM
24°
3%
2 PM
24°
3%
3 PM
24°
3%
4 PM
23°
3%
5 PM
26°
3%
6 PM
25°
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
19°
3%
3 AM
19°
3%
4 AM
18°
3%
5 AM
17°
3%
6 AM
17°
3%
7 AM
17°
3%
8 AM
19°
9%
9 AM
19°
9%
10 AM
20°
9%
11 AM
21°
9%
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 67% 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°
Rain.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 3% 9 mph NNW 68%
1 PM 24° Mostly Clear 3% 10 mph NNW 63%
2 PM 24° Partly Cloudy 3% 10 mph NNW 60%
3 PM 24° Mostly Clear 3% 9 mph NNW 59%
4 PM 23° Partly Cloudy 3% 9 mph NNW 60%
5 PM 26° Mostly Cloudy 3% 8 mph NNW 64%
6 PM 25° Mostly Cloudy 3% 6 mph NNW 69%
7 PM 23° Partly Cloudy 3% 5 mph NNW 74%
8 PM 22° Partly Cloudy 3% 4 mph NNW 77%
9 PM 21° Partly Cloudy 3% 4 mph NW 80%
10 PM 20° Partly Cloudy 3% 3 mph NW 82%
11 PM 20° Partly Cloudy 3% 2 mph W 85%
12 AM 19° Mostly Clear 3% 3 mph SW 88%
1 AM 19° Mostly Clear 3% 3 mph SSW 90%
2 AM 19° Mostly Clear 3% 4 mph SSW 91%
3 AM 19° Mostly Clear 3% 5 mph SSW 91%
4 AM 18° Mostly Clear 3% 5 mph SSW 92%
5 AM 17° Partly Cloudy 3% 5 mph SSW 92%
6 AM 17° Partly Cloudy 3% 5 mph SSW 92%
7 AM 17° Partly Cloudy 3% 5 mph SSW 89%
8 AM 19° Partly Cloudy 9% 6 mph SSW 84%
9 AM 19° Mostly Cloudy 9% 6 mph SSW 78%
10 AM 20° Mostly Cloudy 9% 6 mph SW 74%
11 AM 21° Mostly Cloudy 9% 6 mph SW 72%
15-Day Forecast
Today
8/17
Partly Cloudy
3%
17°
27°
Tue
8/18
Partly Cloudy
52%
17°
27°
Wed
8/19
Fog
67%
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
Rain
13%
16°
26°
Mon
8/24
Drizzle
42%
18°
27°
Tue
8/25
Drizzle
44%
18°
29°
Wed
8/26
Clear
44%
18°
27°
Thu
8/27
Drizzle
60%
16°
27°
Fri
8/28
Drizzle
60%
17°
27°
Sat
8/29
Drizzle
60%
17°
27°
Sun
8/30
Drizzle
60%
17°
27°
Mon
8/31
Drizzle
60%
17°
27°
33
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
33 AQI 6.1 µg/m³
O3
Ground-level ozone
31 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 33 Good 31 33
Wed 38 Good 32 38
Thu 33 Good 33 31
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
SBCAPE29 J/kg
MLCAPE1 J/kg
MUCAPE29 J/kg
SBCIN-20 J/kg
MLCIN0 J/kg
Lifted Index1.2
Kinematics
0–6 km Shear18 kt
0–1 km Shear4 kt
Eff. Shear—
0–1 km SRH0
0–3 km SRH42
Eff. SRH—
Storm Motion326° @ 30 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index13.6
Thermo & Levels
PWAT1.11 in
0–3 km LR5.2 °C/km
700–500 LR5.9 °C/km
Total Totals36.1
LCL894 hPa
LFC876 hPa
EL794 hPa
Freezing Lvl15,049 ft