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

LaSalle, Illinois

Last updated: 4:01 PM CDT  ·  Refresh
19°C
Feels like 18°
Overcast
▲ 21°  /  ▼ 14°
Wind
11 mph NE
Humidity
92%
Dew Point
18°
Pressure
29.32 inHg
Visibility
6 mi
UV Index
1.9
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 overcast at 19°C. Precipitation is likely — peak probability 58% around 5 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°
46%
5 PM
20°
58%
6 PM
19°
39%
7 PM
19°
40%
8 PM
19°
41%
9 PM
18°
27%
10 PM
17°
29%
11 PM
17°
30%
12 AM
17°
21%
1 AM
17°
17%
2 AM
17°
20%
3 AM
17°
28%
4 AM
16°
19%
5 AM
15°
19%
6 AM
15°
18%
7 AM
14°
18%
8 AM
14°
19%
9 AM
14°
19%
10 AM
14°
28%
11 AM
15°
28%
12 PM
15°
28%
1 PM
17°
31%
2 PM
17°
34%
3 PM
17°
42%
7-Day Forecast
Today
21° 14°
Overcast with a 46% chance of rain.
Mon
18° 14°
Overcast with a 28% 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
21° 11°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 19° Overcast 46% 11 mph NE 92%
5 PM 20° Overcast 58% 12 mph NE 90%
6 PM 19° Overcast 39% 13 mph NE 90%
7 PM 19° Overcast 40% 13 mph NE 90%
8 PM 19° Overcast 41% 13 mph NE 89%
9 PM 18° Overcast 27% 14 mph NE 89%
10 PM 17° Overcast 29% 14 mph ENE 89%
11 PM 17° Overcast 30% 13 mph ENE 89%
12 AM 17° Overcast 21% 13 mph ENE 89%
1 AM 17° Overcast 17% 13 mph ENE 89%
2 AM 17° Overcast 20% 12 mph ENE 88%
3 AM 17° Overcast 28% 13 mph ENE 87%
4 AM 16° Overcast 19% 13 mph ENE 86%
5 AM 15° Overcast 19% 13 mph ENE 86%
6 AM 15° Overcast 18% 12 mph ENE 86%
7 AM 14° Overcast 18% 12 mph ENE 86%
8 AM 14° Overcast 19% 13 mph ENE 87%
9 AM 14° Overcast 19% 13 mph ENE 86%
10 AM 14° Overcast 28% 13 mph ENE 86%
11 AM 15° Overcast 28% 13 mph ENE 86%
12 PM 15° Overcast 28% 13 mph ENE 85%
1 PM 17° Overcast 31% 13 mph ENE 84%
2 PM 17° Overcast 34% 13 mph ENE 84%
3 PM 17° Overcast 42% 13 mph NE 84%
15-Day Forecast
Today
9/20
Overcast
46%
14°
21°
Mon
9/21
Overcast
28%
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
3%
11°
21°
Sat
9/26
Clear
8%
11°
21°
Sun
9/27
Clear
18%
13°
22°
Mon
9/28
Clear
44%
12°
23°
Tue
9/29
Drizzle
51%
14°
23°
Wed
9/30
Drizzle
60%
13°
22°
Thu
10/1
Drizzle
60%
12°
21°
Fri
10/2
Drizzle
60%
11°
21°
Sat
10/3
Drizzle
60%
11°
21°
Sun
10/4
Drizzle
60%
11°
20°
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, 19:00'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
SBCAPE50 J/kg
MLCAPE22 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN-0 J/kg
Lifted Index2.7
Kinematics
0–6 km Shear23 kt
0–1 km Shear9 kt
Eff. Shear—
0–1 km SRH7
0–3 km SRH109
Eff. SRH—
Storm Motion342° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index30.5
Thermo & Levels
PWAT1.64 in
0–3 km LR4.5 °C/km
700–500 LR5.5 °C/km
Total Totals41.2
LCL971 hPa
LFC993 hPa
EL876 hPa
Freezing Lvl13,481 ft