Flood Warning — La Salle County, IL 1:00 AM Flood Watch 10:00 AM

LaSalle, Illinois

Last updated: 1:45 PM CDT  ·  Refresh
19°C
Feels like 19°
Rain
▲ 21°  /  ▼ 14°
Wind
11 mph NE
Humidity
93%
Dew Point
18°
Pressure
29.31 inHg
Visibility
5 mi
UV Index
2.5
Cloud Cover
98%
Sunrise
6:41 AM
Sunset
6:56 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: LaSalle is currently rain at 19°C. Precipitation is likely — peak probability 73% around 2 PM. Sunrise: 6:41AM · Sunset: 6:56PM.

Alerts

Flood Warning
La Salle County, IL
Expires 1:00 AM
Flood Watch
Expires 10:00 AM
42 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
19°
72%
2 PM
19°
73%
3 PM
19°
58%
4 PM
18°
59%
5 PM
19°
44%
6 PM
19°
27%
7 PM
19°
29%
8 PM
19°
29%
9 PM
18°
30%
10 PM
17°
30%
11 PM
17°
22%
12 AM
17°
17%
1 AM
17°
17%
2 AM
17°
40%
3 AM
16°
27%
4 AM
16°
18%
5 AM
15°
18%
6 AM
14°
18%
7 AM
14°
18%
8 AM
15°
18%
9 AM
15°
18%
10 AM
15°
28%
11 AM
15°
28%
12 PM
15°
28%
7-Day Forecast
Today
21° 14°
Rain, 72% chance.
Mon
18° 14°
Overcast with a 33% chance of rain.
Tue
18° 11°
Mostly Cloudy with a 29% chance of rain.
Wed
19° 11°
Partly Cloudy.
Thu
21° 11°
Clear.
Fri
21° 11°
Clear.
Sat
22° 11°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 19° Rain 72% 11 mph NE 93%
2 PM 19° Overcast 73% 12 mph NE 91%
3 PM 19° Overcast 58% 12 mph NE 91%
4 PM 18° Overcast 59% 12 mph NE 90%
5 PM 19° Overcast 44% 12 mph NE 90%
6 PM 19° Overcast 27% 13 mph NE 90%
7 PM 19° Overcast 29% 13 mph NE 90%
8 PM 19° Overcast 29% 14 mph NE 90%
9 PM 18° Overcast 30% 14 mph ENE 89%
10 PM 17° Overcast 30% 14 mph ENE 89%
11 PM 17° Overcast 22% 14 mph ENE 89%
12 AM 17° Overcast 17% 13 mph ENE 89%
1 AM 17° Overcast 17% 13 mph ENE 88%
2 AM 17° Overcast 40% 13 mph ENE 87%
3 AM 16° Overcast 27% 13 mph ENE 87%
4 AM 16° Overcast 18% 13 mph ENE 86%
5 AM 15° Overcast 18% 13 mph ENE 86%
6 AM 14° Overcast 18% 13 mph ENE 86%
7 AM 14° Overcast 18% 13 mph ENE 86%
8 AM 15° Overcast 18% 13 mph ENE 86%
9 AM 15° Overcast 18% 14 mph ENE 86%
10 AM 15° Overcast 28% 14 mph ENE 86%
11 AM 15° Overcast 28% 14 mph ENE 85%
12 PM 15° Overcast 28% 14 mph ENE 84%
15-Day Forecast
Today
9/20
Rain
72%
14°
21°
Mon
9/21
Overcast
33%
14°
18°
Tue
9/22
Mostly Cloudy
29%
11°
18°
Wed
9/23
Partly Cloudy
3%
11°
19°
Thu
9/24
Clear
3%
11°
21°
Fri
9/25
Clear
8%
11°
21°
Sat
9/26
Clear
8%
11°
22°
Sun
9/27
Clear
42%
12°
23°
Mon
9/28
Drizzle
43%
12°
23°
Tue
9/29
Drizzle
51%
13°
23°
Wed
9/30
Drizzle
60%
13°
23°
Thu
10/1
Drizzle
60%
13°
22°
Fri
10/2
Drizzle
60%
12°
21°
Sat
10/3
Clear
60%
11°
21°
Sun
10/4
Drizzle
60%
9°
19°
42
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
42 AQI 7.5 µg/m³
O3
Ground-level ozone
22 AQI 24 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 42 Good 22 42
Tue 22 Good 19 22
Wed 28 Good 28 19
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 Sun Sep 20, 17:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE7 J/kg
MLCAPE14 J/kg
MUCAPE0 J/kg
SBCIN-2 J/kg
MLCIN0 J/kg
Lifted Index3.2
Kinematics
0–6 km Shear36 kt
0–1 km Shear8 kt
Eff. Shear—
0–1 km SRH46
0–3 km SRH145
Eff. SRH—
Storm Motion311° @ 23 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index32.3
Thermo & Levels
PWAT1.84 in
0–3 km LR4.5 °C/km
700–500 LR5.1 °C/km
Total Totals40.1
LCL975 hPa
LFC960 hPa
EL863 hPa
Freezing Lvl13,425 ft