Severe Thunderstorm Watch 12:00 AM Severe Thunderstorm Watch 12:00 AM 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, Fulton County, IL, Mason County, IL

Fulton County, Illinois, United States

Last updated: 11:02 PM CDT  ·  Refresh
23°C
Feels like 26°
Partly Cloudy
▲ 29°  /  ▼ 16°
Wind
3 mph WSW
Humidity
91%
Dew Point
21°
Pressure
29.30 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
37%
Sunrise
6:17 AM
Sunset
7:49 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Fulton County is currently partly cloudy at 23°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2143 J/kg) — isolated convective development possible. Sunrise: 6:17AM · Sunset: 7:49PM.

Alerts

Severe Thunderstorm Watch
Expires 12:00 AM
Severe Thunderstorm Watch
Expires 12:00 AM
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, Fulton County, IL, Mason County, IL
Expires
35 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
8%
12 AM
22°
12%
1 AM
22°
3%
2 AM
21°
3%
3 AM
19°
3%
4 AM
19°
3%
5 AM
17°
3%
6 AM
17°
3%
7 AM
17°
3%
8 AM
18°
3%
9 AM
21°
5%
10 AM
22°
5%
11 AM
23°
5%
12 PM
24°
5%
1 PM
26°
5%
2 PM
27°
5%
3 PM
27°
5%
4 PM
27°
5%
5 PM
28°
5%
6 PM
26°
3%
7 PM
26°
3%
8 PM
24°
3%
9 PM
22°
3%
10 PM
19°
3%
7-Day Forecast
Tonight
29° 16°
Partly Cloudy.
Sat
28° 16°
Clear.
Sun
26° 12°
Mostly Clear.
Mon
24° 14°
Partly Cloudy with a 47% chance of rain.
Tue
26° 12°
Rain, 64% chance.
Wed
28° 17°
Thunderstorm, 64% chance.
Thu
28° 18°
Clear with a 22% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 23° Partly Cloudy 8% 3 mph WSW 91%
12 AM 22° Mostly Clear 12% 4 mph NW 92%
1 AM 22° Clear 3% 6 mph N 92%
2 AM 21° Clear 3% 6 mph NNW 91%
3 AM 19° Mostly Clear 3% 6 mph NNW 91%
4 AM 19° Clear 3% 7 mph NNW 91%
5 AM 17° Clear 3% 6 mph NW 91%
6 AM 17° Clear 3% 7 mph NW 91%
7 AM 17° Clear 3% 7 mph NW 91%
8 AM 18° Clear 3% 8 mph NW 85%
9 AM 21° Clear 5% 8 mph NW 78%
10 AM 22° Clear 5% 8 mph NW 73%
11 AM 23° Clear 5% 9 mph NW 68%
12 PM 24° Clear 5% 10 mph NW 64%
1 PM 26° Clear 5% 12 mph NW 61%
2 PM 27° Mostly Clear 5% 12 mph NW 61%
3 PM 27° Mostly Clear 5% 12 mph NW 62%
4 PM 27° Partly Cloudy 5% 12 mph NW 62%
5 PM 28° Mostly Clear 5% 10 mph NW 66%
6 PM 26° Mostly Clear 3% 9 mph NW 70%
7 PM 26° Clear 3% 9 mph NW 72%
8 PM 24° Clear 3% 8 mph NW 74%
9 PM 22° Clear 3% 8 mph NW 77%
10 PM 19° Clear 3% 7 mph NNW 80%
15-Day Forecast
Today
8/21
Partly Cloudy
8%
16°
29°
Sat
8/22
Clear
5%
16°
28°
Sun
8/23
Mostly Clear
3%
12°
26°
Mon
8/24
Partly Cloudy
47%
14°
24°
Tue
8/25
Rain
64%
12°
26°
Wed
8/26
Thunderstorm
64%
17°
28°
Thu
8/27
Clear
22%
18°
28°
Fri
8/28
Drizzle
53%
17°
27°
Sat
8/29
Thunderstorm
68%
16°
30°
Sun
8/30
Drizzle
44%
20°
32°
Mon
8/31
Drizzle
60%
20°
32°
Tue
9/1
Drizzle
60%
20°
32°
Wed
9/2
Drizzle
60%
19°
29°
Thu
9/3
Drizzle
60%
18°
29°
Fri
9/4
Drizzle
60%
18°
29°
35
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
35 AQI 6.3 µg/m³
O3
Ground-level ozone
32 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 35 Good 32 35
Sun 32 Good 32 31
Mon 26 Good 26 11
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 Sat Aug 22, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1521 J/kg
MLCAPE2200 J/kg
MUCAPE2552 J/kg
SBCIN-157 J/kg
MLCIN-46 J/kg
Lifted Index-5.1
Kinematics
0–6 km Shear30 kt
0–1 km Shear22 kt
Eff. Shear30 kt
0–1 km SRH170
0–3 km SRH203
Eff. SRH203
Storm Motion331° @ 29 kt
0–1 km EHI1.6
Composite Parameters
Sig. Tornado0.9
STP (eff)1.5
Supercell8.1
K-Index28.8
Thermo & Levels
PWAT1.44 in
0–3 km LR5.1 °C/km
700–500 LR6.7 °C/km
Total Totals53.3
LCL969 hPa
LFC800 hPa
EL223 hPa
Freezing Lvl13,366 ft