Severe Thunderstorm Watch 12:00 AM

Whiteside County, Illinois, United States

Last updated: 10:14 PM CDT  ·  Refresh
21°C
Feels like 23°
Mostly Clear
▲ 28°  /  ▼ 15°
Wind
5 mph W
Humidity
94%
Dew Point
20°
Pressure
29.25 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
22%
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 mostly clear at 21°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1490 J/kg) — isolated convective development possible. Sunrise: 6:14AM · Sunset: 7:50PM.

Alerts

Severe Thunderstorm Watch
Expires 12:00 AM
36 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
9%
11 PM
21°
17%
12 AM
20°
16%
1 AM
19°
5%
2 AM
18°
5%
3 AM
17°
6%
4 AM
17°
8%
5 AM
15°
8%
6 AM
15°
4%
7 AM
16°
5%
8 AM
18°
5%
9 AM
21°
5%
10 AM
23°
5%
11 AM
24°
5%
12 PM
26°
11%
1 PM
27°
20%
2 PM
28°
16%
3 PM
28°
5%
4 PM
27°
5%
5 PM
27°
5%
6 PM
26°
3%
7 PM
25°
3%
8 PM
24°
3%
9 PM
21°
3%
7-Day Forecast
Tonight
28° 15°
Mostly Clear.
Sat
28° 14°
Clear with a 20% chance of rain.
Sun
25° 12°
Mostly Clear.
Mon
23° 13°
Mostly Cloudy with a 44% chance of rain.
Tue
24° 13°
Rain, 64% chance.
Wed
28° 16°
Thunderstorm, 64% chance.
Thu
27° 16°
Clear with a 22% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 21° Mostly Clear 9% 5 mph W 94%
11 PM 21° Clear 17% 5 mph WNW 93%
12 AM 20° Clear 16% 6 mph WNW 92%
1 AM 19° Clear 5% 7 mph NW 92%
2 AM 18° Clear 5% 7 mph NW 91%
3 AM 17° Clear 6% 7 mph NNW 91%
4 AM 17° Clear 8% 7 mph NNW 91%
5 AM 15° Clear 8% 7 mph NW 92%
6 AM 15° Clear 4% 6 mph NW 92%
7 AM 16° Mostly Clear 5% 6 mph NW 90%
8 AM 18° Clear 5% 7 mph NW 85%
9 AM 21° Clear 5% 8 mph WNW 80%
10 AM 23° Clear 5% 8 mph WNW 74%
11 AM 24° Clear 5% 10 mph WNW 69%
12 PM 26° Clear 11% 12 mph WNW 64%
1 PM 27° Clear 20% 14 mph NW 61%
2 PM 28° Clear 16% 14 mph NW 60%
3 PM 28° Clear 5% 14 mph NW 59%
4 PM 27° Clear 5% 13 mph NW 58%
5 PM 27° Clear 5% 12 mph NW 61%
6 PM 26° Clear 3% 10 mph NW 66%
7 PM 25° Clear 3% 10 mph NW 66%
8 PM 24° Clear 3% 10 mph NW 68%
9 PM 21° Clear 3% 9 mph NW 70%
15-Day Forecast
Today
8/21
Mostly Clear
9%
15°
28°
Sat
8/22
Clear
20%
14°
28°
Sun
8/23
Mostly Clear
3%
12°
25°
Mon
8/24
Mostly Cloudy
44%
13°
23°
Tue
8/25
Rain
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
Rain
68%
16°
28°
Sun
8/30
Rain
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 Sat Aug 22, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE931 J/kg
MLCAPE859 J/kg
MUCAPE1420 J/kg
SBCIN-161 J/kg
MLCIN-96 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear24 kt
0–1 km Shear17 kt
Eff. Shear23 kt
0–1 km SRH37
0–3 km SRH37
Eff. SRH37
Storm Motion345° @ 22 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.6
K-Index16.5
Thermo & Levels
PWAT1.16 in
0–3 km LR4.6 °C/km
700–500 LR6.7 °C/km
Total Totals47.3
LCL977 hPa
LFC674 hPa
EL244 hPa
Freezing Lvl13,064 ft