LaSalle County, Illinois, United States

Last updated: 6:25 PM CDT  ·  Refresh
24°C
Feels like 25°
Mostly Clear
▲ 26°  /  ▼ 14°
Wind
2 mph N
Humidity
56%
Dew Point
13°
Pressure
29.49 inHg
Visibility
10 mi
UV Index
4.8
Cloud Cover
23%
Sunrise
5:22 AM
Sunset
8:32 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: LaSalle County is currently mostly clear at 24°C. Precipitation is likely — peak probability 77% around 2 PM. Atmospheric instability is elevated (CAPE up to 1102 J/kg) — isolated convective development possible. Sunrise: 5:22AM · Sunset: 8:32PM.

Alerts

No active alerts for this location.
37 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
11%
7 PM
25°
29%
8 PM
23°
29%
9 PM
21°
23%
10 PM
19°
23%
11 PM
18°
23%
12 AM
18°
16%
1 AM
16°
8%
2 AM
16°
13%
3 AM
16°
13%
4 AM
17°
16%
5 AM
15°
16%
6 AM
16°
16%
7 AM
17°
25%
8 AM
18°
26%
9 AM
20°
51%
10 AM
21°
44%
11 AM
22°
53%
12 PM
22°
66%
1 PM
24°
69%
2 PM
25°
76%
3 PM
25°
66%
4 PM
25°
60%
5 PM
24°
65%
7-Day Forecast
Tonight
26° 14°
Mostly Clear with a 23% chance of rain.
Wed
27° 14°
Rain, 72% chance.
Thu
27° 17°
Fog.
Fri
27° 15°
Drizzle, 52% chance.
Sat
29° 18°
Partly Cloudy with a 34% chance of rain.
Sun
33° 21°
Drizzle, 66% chance.
Mon
33° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 11% 2 mph N 56%
7 PM 25° Mostly Clear 29% 2 mph ENE 62%
8 PM 23° Rain 29% 3 mph ESE 67%
9 PM 21° Rain 23% 4 mph SE 71%
10 PM 19° Rain 23% 4 mph SE 76%
11 PM 18° Rain 23% 5 mph SE 81%
12 AM 18° Drizzle 16% 5 mph SE 86%
1 AM 16° Partly Cloudy 8% 5 mph SE 87%
2 AM 16° Partly Cloudy 13% 6 mph SE 86%
3 AM 16° Partly Cloudy 13% 6 mph SSE 84%
4 AM 17° Partly Cloudy 16% 6 mph SSE 84%
5 AM 15° Partly Cloudy 16% 5 mph S 85%
6 AM 16° Partly Cloudy 16% 6 mph S 85%
7 AM 17° Drizzle 25% 7 mph SSW 83%
8 AM 18° Drizzle 26% 8 mph SSW 81%
9 AM 20° Drizzle 51% 9 mph SSW 78%
10 AM 21° Drizzle 44% 10 mph SSW 75%
11 AM 22° Rain 53% 11 mph SSW 73%
12 PM 22° Rain 66% 11 mph SW 72%
1 PM 24° Rain 69% 11 mph SW 72%
2 PM 25° Rain 76% 11 mph SW 74%
3 PM 25° Rain 66% 12 mph SW 75%
4 PM 25° Rain 60% 11 mph SW 76%
5 PM 24° Rain 65% 11 mph SW 78%
15-Day Forecast
Today
6/23
Mostly Clear
23%
14°
26°
Wed
6/24
Rain
72%
14°
27°
Thu
6/25
Fog
17%
17°
27°
Fri
6/26
Drizzle
52%
15°
27°
Sat
6/27
Partly Cloudy
34%
18°
29°
Sun
6/28
Drizzle
66%
21°
33°
Mon
6/29
Clear
13%
23°
33°
Tue
6/30
Clear
21%
24°
33°
Wed
7/1
Thunderstorm
50%
24°
34°
Thu
7/2
Thunderstorm
54%
25°
32°
Fri
7/3
Thunderstorm
67%
24°
37°
Sat
7/4
Thunderstorm
67%
21°
37°
Sun
7/5
Thunderstorm
66%
20°
37°
Mon
7/6
Thunderstorm
66%
19°
37°
Tue
7/7
Thunderstorm
66%
20°
37°
37
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
23 AQI 4.1 µg/m³
O3
Ground-level ozone
Dominant
37 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 37 Good 37 23
Thu 43 Good 38 43
Fri 38 Good 38 20
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 Tue Jun 23, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE36 J/kg
MLCAPE1 J/kg
MUCAPE36 J/kg
SBCIN-30 J/kg
MLCIN0 J/kg
Lifted Index3.8
Kinematics
0–6 km Shear35 kt
0–1 km Shear2 kt
Eff. Shear—
0–1 km SRH-4
0–3 km SRH-62
Eff. SRH—
Storm Motion255° @ 18 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index19.1
Thermo & Levels
PWAT0.97 in
0–3 km LR7.2 °C/km
700–500 LR4.6 °C/km
Total Totals37.0
LCL848 hPa
LFC831 hPa
EL705 hPa
Freezing Lvl12,510 ft