Severe Thunderstorm Watch 10:00 PM

Jo Daviess County, Illinois, United States

Last updated: 9:13 PM CDT  ·  Refresh
19°C
Feels like 21°
Clear
▲ 28°  /  ▼ 14°
Wind
5 mph WNW
Humidity
90%
Dew Point
19°
Pressure
29.11 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
3%
Sunrise
6:14 AM
Sunset
7:52 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Jo Daviess County is currently clear at 20°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1001 J/kg) — isolated convective development possible. Sunrise: 6:14AM · Sunset: 7:52PM.

Alerts

Severe Thunderstorm Watch
Expires 10:00 PM
36 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
19°
4%
10 PM
20°
14%
11 PM
19°
14%
12 AM
18°
14%
1 AM
17°
3%
2 AM
16°
3%
3 AM
16°
3%
4 AM
16°
3%
5 AM
14°
3%
6 AM
14°
3%
7 AM
14°
3%
8 AM
17°
3%
9 AM
20°
3%
10 AM
22°
5%
11 AM
23°
7%
12 PM
24°
15%
1 PM
27°
16%
2 PM
27°
5%
3 PM
27°
5%
4 PM
28°
3%
5 PM
26°
3%
6 PM
25°
3%
7 PM
24°
3%
8 PM
23°
3%
7-Day Forecast
Tonight
28° 14°
Clear.
Sat
28° 14°
Clear.
Sun
25° 11°
Mostly Clear.
Mon
23° 11°
Overcast with a 44% chance of rain.
Tue
26° 12°
Clear with a 64% chance of rain.
Wed
29° 16°
Rain, 64% chance.
Thu
27° 16°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 19° Clear 4% 5 mph WNW 90%
10 PM 20° Clear 14% 6 mph WNW 89%
11 PM 19° Clear 14% 6 mph NW 89%
12 AM 18° Clear 14% 6 mph NW 89%
1 AM 17° Clear 3% 6 mph NW 90%
2 AM 16° Clear 3% 6 mph NW 90%
3 AM 16° Clear 3% 5 mph NW 91%
4 AM 16° Clear 3% 5 mph NW 91%
5 AM 14° Clear 3% 5 mph NW 91%
6 AM 14° Clear 3% 4 mph NW 91%
7 AM 14° Clear 3% 4 mph NW 90%
8 AM 17° Clear 3% 6 mph NW 84%
9 AM 20° Clear 3% 7 mph NW 77%
10 AM 22° Clear 5% 8 mph NW 71%
11 AM 23° Clear 7% 11 mph NW 66%
12 PM 24° Clear 15% 13 mph NW 61%
1 PM 27° Clear 16% 14 mph NW 57%
2 PM 27° Clear 5% 14 mph NW 54%
3 PM 27° Clear 5% 14 mph NW 52%
4 PM 28° Clear 3% 14 mph NW 53%
5 PM 26° Clear 3% 12 mph NW 58%
6 PM 25° Clear 3% 10 mph NW 63%
7 PM 24° Clear 3% 10 mph NW 64%
8 PM 23° Clear 3% 10 mph NW 66%
15-Day Forecast
Today
8/21
Clear
4%
14°
28°
Sat
8/22
Clear
15%
14°
28°
Sun
8/23
Mostly Clear
3%
11°
25°
Mon
8/24
Overcast
44%
11°
23°
Tue
8/25
Clear
64%
12°
26°
Wed
8/26
Rain
64%
16°
29°
Thu
8/27
Clear
17%
16°
27°
Fri
8/28
Clear
17%
16°
27°
Sat
8/29
Drizzle
68%
15°
28°
Sun
8/30
Drizzle
44%
18°
29°
Mon
8/31
Drizzle
60%
17°
29°
Tue
9/1
Drizzle
60%
18°
29°
Wed
9/2
Drizzle
60%
17°
28°
Thu
9/3
Drizzle
60%
16°
27°
Fri
9/4
Drizzle
60%
16°
28°
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
28 AQI 5.1 µg/m³
O3
Ground-level ozone
Dominant
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 36 Good 36 28
Sun 30 Good 30 21
Mon 28 Good 28 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, 01:00'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
SBCAPE590 J/kg
MLCAPE379 J/kg
MUCAPE1262 J/kg
SBCIN-263 J/kg
MLCIN-195 J/kg
Lifted Index-1.3
Kinematics
0–6 km Shear24 kt
0–1 km Shear16 kt
Eff. Shear17 kt
0–1 km SRH56
0–3 km SRH77
Eff. SRH57
Storm Motion346° @ 23 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index13.2
Thermo & Levels
PWAT1.00 in
0–3 km LR4.3 °C/km
700–500 LR6.5 °C/km
Total Totals42.9
LCL976 hPa
LFC624 hPa
EL245 hPa
Freezing Lvl13,123 ft