Flood Watch 1:00 PM

Stephenson County, Illinois, United States

Last updated: 10:01 AM CDT  ·  Refresh
61°F
Feels like 56°
Rain
▲ 67°  /  ▼ 56°
Wind
14 mph NE
Humidity
96%
Dew Point
60°
Pressure
29.11 inHg
Visibility
10 mi
UV Index
2.5
Cloud Cover
94%
Sunrise
6:44 AM
Sunset
6:59 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Stephenson County is currently rain at 61°F. Precipitation is likely — peak probability 82% around 11 AM. Sunrise: 6:44AM · Sunset: 6:59PM.

Alerts

Flood Watch
Expires 1:00 PM
24 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
61°
81%
11 AM
59°
81%
12 PM
60°
73%
1 PM
60°
68%
2 PM
60°
67%
3 PM
60°
47%
4 PM
60°
46%
5 PM
62°
46%
6 PM
62°
21%
7 PM
61°
7%
8 PM
60°
19%
9 PM
60°
27%
10 PM
59°
16%
11 PM
59°
27%
12 AM
59°
27%
1 AM
58°
39%
2 AM
58°
41%
3 AM
59°
41%
4 AM
59°
50%
5 AM
57°
57%
6 AM
57°
61%
7 AM
57°
61%
8 AM
57°
61%
9 AM
56°
61%
7-Day Forecast
Today
67° 56°
Rain, 81% chance.
Mon
59° 52°
Mostly Cloudy with a 50% chance of rain.
Tue
61° 48°
Overcast with a 38% chance of rain.
Wed
63° 43°
Mostly Cloudy.
Thu
64° 48°
Clear.
Fri
65° 51°
Clear.
Sat
66° 50°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 61° Rain 81% 14 mph NE 96%
11 AM 59° Overcast 81% 13 mph NE 94%
12 PM 60° Overcast 73% 13 mph NE 94%
1 PM 60° Rain 68% 14 mph NE 94%
2 PM 60° Overcast 67% 14 mph NE 92%
3 PM 60° Overcast 47% 14 mph NE 90%
4 PM 60° Overcast 46% 14 mph NE 86%
5 PM 62° Overcast 46% 14 mph NE 85%
6 PM 62° Overcast 21% 13 mph NE 84%
7 PM 61° Overcast 7% 12 mph NE 83%
8 PM 60° Overcast 19% 12 mph NE 83%
9 PM 60° Overcast 27% 13 mph NE 84%
10 PM 59° Overcast 16% 13 mph NE 84%
11 PM 59° Overcast 27% 13 mph NE 83%
12 AM 59° Overcast 27% 12 mph NE 83%
1 AM 58° Overcast 39% 13 mph NE 85%
2 AM 58° Overcast 41% 13 mph NE 84%
3 AM 59° Overcast 41% 13 mph NE 83%
4 AM 59° Overcast 50% 13 mph NE 82%
5 AM 57° Overcast 57% 13 mph NE 82%
6 AM 57° Overcast 61% 13 mph NE 83%
7 AM 57° Overcast 61% 13 mph NE 83%
8 AM 57° Overcast 61% 13 mph NE 84%
9 AM 56° Overcast 61% 14 mph ENE 85%
15-Day Forecast
Today
9/20
Rain
81%
56°
67°
Mon
9/21
Mostly Cloudy
50%
52°
59°
Tue
9/22
Overcast
38%
48°
61°
Wed
9/23
Mostly Cloudy
3%
43°
63°
Thu
9/24
Clear
3%
48°
64°
Fri
9/25
Clear
8%
51°
65°
Sat
9/26
Clear
17%
50°
66°
Sun
9/27
Drizzle
43%
53°
67°
Mon
9/28
Clear
44%
52°
68°
Tue
9/29
Drizzle
51%
53°
65°
Wed
9/30
Drizzle
60%
54°
67°
Thu
10/1
Drizzle
60%
52°
64°
Fri
10/2
Drizzle
60%
51°
64°
Sat
10/3
Drizzle
60%
49°
63°
Sun
10/4
Drizzle
60%
47°
60°
24
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
18 AQI 3.3 µg/m³
O3
Ground-level ozone
Dominant
24 AQI 27 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 24 Good 24 18
Tue 21 Good 21 4
Wed 28 Good 28 7
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sun Sep 20, 13:00'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
SBCAPE0 J/kg
MLCAPE13 J/kg
MUCAPE24 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index7.3
Kinematics
0–6 km Shear22 kt
0–1 km Shear14 kt
Eff. Shear—
0–1 km SRH19
0–3 km SRH244
Eff. SRH—
Storm Motion358° @ 22 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index33.0
Thermo & Levels
PWAT1.73 in
0–3 km LR3.6 °C/km
700–500 LR5.2 °C/km
Total Totals42.2
LCL974 hPa
LFC—
EL—
Freezing Lvl13,130 ft