Severe Thunderstorm Watch 10:00 PM

Whiteside County, Illinois, United States

Last updated: 9:12 PM CDT  ·  Refresh
22°C
Feels like 24°
Partly Cloudy
▲ 28°  /  ▼ 15°
Wind
4 mph WNW
Humidity
94%
Dew Point
21°
Pressure
29.24 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
48%
Sunrise
6:14 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Whiteside County is currently partly cloudy at 22°C. Precipitation is likely — peak probability 51% around 9 PM. Atmospheric instability is elevated (CAPE up to 1299 J/kg) — isolated convective development possible. Sunrise: 6:14AM · Sunset: 7:50PM.

Alerts

Severe Thunderstorm Watch
Expires 10:00 PM
36 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
50%
10 PM
21°
16%
11 PM
20°
16%
12 AM
20°
14%
1 AM
18°
3%
2 AM
18°
3%
3 AM
17°
3%
4 AM
17°
4%
5 AM
16°
4%
6 AM
15°
5%
7 AM
16°
5%
8 AM
17°
5%
9 AM
20°
5%
10 AM
22°
5%
11 AM
24°
5%
12 PM
25°
11%
1 PM
27°
16%
2 PM
27°
16%
3 PM
28°
16%
4 PM
28°
5%
5 PM
27°
5%
6 PM
26°
3%
7 PM
25°
3%
8 PM
24°
3%
7-Day Forecast
Tonight
28° 15°
Partly Cloudy with a 50% chance of rain.
Sat
28° 15°
Clear.
Sun
26° 12°
Partly Cloudy.
Mon
22° 12°
Overcast with a 44% chance of rain.
Tue
24° 13°
Clear with a 64% chance of rain.
Wed
28° 16°
Thunderstorm, 64% chance.
Thu
27° 16°
Clear with a 22% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 22° Partly Cloudy 50% 4 mph WNW 94%
10 PM 21° Clear 16% 6 mph W 94%
11 PM 20° Clear 16% 5 mph WNW 94%
12 AM 20° Clear 14% 6 mph NW 93%
1 AM 18° Clear 3% 7 mph NW 92%
2 AM 18° Mostly Clear 3% 7 mph NW 92%
3 AM 17° Mostly Clear 3% 8 mph NW 92%
4 AM 17° Mostly Clear 4% 7 mph NW 92%
5 AM 16° Mostly Clear 4% 7 mph NW 92%
6 AM 15° Mostly Clear 5% 6 mph NW 92%
7 AM 16° Mostly Clear 5% 6 mph NW 91%
8 AM 17° Mostly Clear 5% 6 mph NW 87%
9 AM 20° Mostly Clear 5% 7 mph NW 83%
10 AM 22° Mostly Clear 5% 8 mph WNW 78%
11 AM 24° Mostly Clear 5% 9 mph WNW 72%
12 PM 25° Clear 11% 12 mph NW 66%
1 PM 27° Clear 16% 13 mph NW 62%
2 PM 27° Clear 16% 13 mph NW 61%
3 PM 28° Clear 16% 13 mph NW 60%
4 PM 28° Clear 5% 13 mph NW 58%
5 PM 27° Clear 5% 12 mph NW 61%
6 PM 26° Clear 3% 10 mph NW 65%
7 PM 25° Clear 3% 10 mph NW 65%
8 PM 24° Clear 3% 9 mph NW 67%
15-Day Forecast
Today
8/21
Partly Cloudy
50%
15°
28°
Sat
8/22
Clear
16%
15°
28°
Sun
8/23
Partly Cloudy
3%
12°
26°
Mon
8/24
Overcast
44%
12°
22°
Tue
8/25
Clear
64%
13°
24°
Wed
8/26
Thunderstorm
64%
16°
28°
Thu
8/27
Clear
22%
16°
27°
Fri
8/28
Clear
17%
16°
26°
Sat
8/29
Drizzle
68%
16°
28°
Sun
8/30
Thunderstorm
68%
19°
28°
Mon
8/31
Drizzle
60%
18°
31°
Tue
9/1
Drizzle
60%
18°
31°
Wed
9/2
Drizzle
60%
18°
27°
Thu
9/3
Drizzle
60%
17°
26°
Fri
9/4
Drizzle
60%
17°
27°
36
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 5.7 µg/m³
O3
Ground-level ozone
Dominant
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 36 Good 36 32
Sun 29 Good 29 27
Mon 26 Good 26 9
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 Fri Aug 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1526 J/kg
MLCAPE2540 J/kg
MUCAPE3119 J/kg
SBCIN-127 J/kg
MLCIN-31 J/kg
Lifted Index-4.4
Kinematics
0–6 km Shear23 kt
0–1 km Shear17 kt
Eff. Shear23 kt
0–1 km SRH78
0–3 km SRH81
Eff. SRH81
Storm Motion337° @ 22 kt
0–1 km EHI0.7
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell3.1
K-Index40.6
Thermo & Levels
PWAT1.81 in
0–3 km LR5.4 °C/km
700–500 LR6.1 °C/km
Total Totals53.6
LCL979 hPa
LFC810 hPa
EL225 hPa
Freezing Lvl12,963 ft