Flood Warning — Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL Flood Warning — Brown County, IL, Pike County, IL, Scott County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Morgan County, IL 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 — Morgan County, IL, Pike County, IL, Brown County, IL, Scott County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL Flood Warning — Pike County, MO, Morgan County, IL, Pike County, IL, Brown County, IL, Scott County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL 8:12 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

Brown County, Illinois, United States

Last updated: 4:58 PM CDT  ·  Refresh
26°C
Feels like 28°
Partly Cloudy
▲ 26°  /  ▼ 16°
Wind
2 mph SW
Humidity
63%
Dew Point
16°
Pressure
29.45 inHg
Visibility
10 mi
UV Index
6.4
Cloud Cover
53%
Sunrise
5:35 AM
Sunset
8:35 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Brown County is currently partly cloudy at 25°C. Precipitation is likely — peak probability 56% around 11 AM. Atmospheric instability is elevated (CAPE up to 1076 J/kg) — isolated convective development possible. Sunrise: 5:35AM · Sunset: 8:35PM.

Alerts

Flood Warning
Brown County, IL, Cass County, IL, Morgan County, IL, Schuyler County, IL
Expires
Flood Warning
Brown County, IL, Pike County, IL, Scott County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Morgan County, IL
Expires
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
Morgan County, IL, Pike County, IL, Brown County, IL, Scott County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL
Expires
Flood Warning
Pike County, MO, Morgan County, IL, Pike County, IL, Brown County, IL, Scott County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL
Expires 8:12 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
39 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
5%
5 PM
26°
23%
6 PM
25°
23%
7 PM
23°
23%
8 PM
22°
23%
9 PM
21°
23%
10 PM
19°
25%
11 PM
19°
25%
12 AM
18°
19%
1 AM
18°
5%
2 AM
18°
8%
3 AM
18°
9%
4 AM
18°
9%
5 AM
16°
9%
6 AM
17°
9%
7 AM
18°
22%
8 AM
19°
33%
9 AM
20°
47%
10 AM
21°
50%
11 AM
22°
56%
12 PM
23°
53%
1 PM
26°
53%
2 PM
26°
48%
3 PM
26°
43%
7-Day Forecast
Today
26° 16°
Rain, 25% chance.
Wed
29° 16°
Drizzle, 50% chance.
Thu
29° 17°
Rain, 74% chance.
Fri
26° 17°
Rain, 90% chance.
Sat
31° 19°
Clear with a 62% chance of rain.
Sun
33° 22°
Clear with a 53% chance of rain.
Mon
34° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Partly Cloudy 5% 2 mph SW 63%
5 PM 26° Mostly Cloudy 23% 2 mph E 64%
6 PM 25° Rain 23% 3 mph SE 66%
7 PM 23° Rain 23% 4 mph SE 72%
8 PM 22° Rain 23% 4 mph SE 76%
9 PM 21° Rain 23% 4 mph SE 79%
10 PM 19° Rain 25% 5 mph SE 81%
11 PM 19° Rain 25% 5 mph SSE 83%
12 AM 18° Drizzle 19% 5 mph SSE 85%
1 AM 18° Partly Cloudy 5% 5 mph SSE 84%
2 AM 18° Partly Cloudy 8% 5 mph SSE 84%
3 AM 18° Partly Cloudy 9% 5 mph SSE 83%
4 AM 18° Partly Cloudy 9% 5 mph SSE 83%
5 AM 16° Overcast 9% 6 mph SSE 83%
6 AM 17° Overcast 9% 6 mph SSE 83%
7 AM 18° Mostly Cloudy 22% 8 mph S 81%
8 AM 19° Drizzle 33% 9 mph S 78%
9 AM 20° Drizzle 47% 10 mph S 76%
10 AM 21° Drizzle 50% 9 mph SSW 77%
11 AM 22° Drizzle 56% 9 mph SSW 77%
12 PM 23° Drizzle 53% 9 mph SSW 76%
1 PM 26° Drizzle 53% 8 mph SW 78%
2 PM 26° Drizzle 48% 8 mph SW 80%
3 PM 26° Drizzle 43% 8 mph SW 82%
15-Day Forecast
Today
6/23
Rain
25%
16°
26°
Wed
6/24
Drizzle
50%
16°
29°
Thu
6/25
Rain
74%
17°
29°
Fri
6/26
Rain
90%
17°
26°
Sat
6/27
Clear
62%
19°
31°
Sun
6/28
Clear
53%
22°
33°
Mon
6/29
Clear
14%
22°
34°
Tue
6/30
Clear
38%
23°
34°
Wed
7/1
Thunderstorm
66%
23°
34°
Thu
7/2
Drizzle
63%
23°
33°
Fri
7/3
Drizzle
63%
23°
30°
Sat
7/4
Drizzle
66%
21°
32°
Sun
7/5
Drizzle
66%
20°
31°
Mon
7/6
Drizzle
66%
20°
31°
Tue
7/7
Drizzle
66%
20°
31°
39
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
25 AQI 4.5 µg/m³
O3
Ground-level ozone
Dominant
39 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 39 Good 39 25
Thu 39 Good 39 32
Fri 33 Good 33 13
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 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE130 J/kg
MLCAPE40 J/kg
MUCAPE130 J/kg
SBCIN0 J/kg
MLCIN-1 J/kg
Lifted Index0.6
Kinematics
0–6 km Shear32 kt
0–1 km Shear2 kt
Eff. Shear21 kt
0–1 km SRH-5
0–3 km SRH-68
Eff. SRH-68
Storm Motion246° @ 18 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index23.0
Thermo & Levels
PWAT1.23 in
0–3 km LR6.8 °C/km
700–500 LR5.4 °C/km
Total Totals40.6
LCL870 hPa
LFC997 hPa
EL389 hPa
Freezing Lvl13,570 ft