Severe Thunderstorm Warning — Lake County, IN 6:15 PM Severe Thunderstorm Watch 7:00 PM Severe Thunderstorm Watch 7:00 PM Heat Advisory — Boone, IL, McHenry, IL, Kane, IL, Kendall, IL, Kankakee, IL, Iroquois, IL, Northern Will, IL, Southern Will, IL, Eastern Will, IL, Winnebago, IL, Ogle, IL, Lee, IL, De Kalb, IL, La Salle, IL, Grundy, IL, Livingston, IL, Ford, IL, Porter, IN, Lake, IN, Newton, IN, Jasper, IN, Benton, IN 9:00 PM Excessive Heat Warning — Winnebago, IL, Ogle, IL, Lee, IL, De Kalb, IL, La Salle, IL, Grundy, IL, Livingston, IL, Ford, IL, Lake, IN, Newton, IN, Jasper, IN, Benton, IN, Porter, IN, Boone, IL, McHenry, IL, Kane, IL, Kendall, IL, Lake, IL, DuPage, IL, Kankakee, IL, Iroquois, IL, Northern Cook, IL, Central Cook, IL, Southern Cook, IL, Northern Will, IL, Southern Will, IL, Eastern Will, IL 9:00 PM Flood Warning — Cook County, IL, Lake County, IN 1:00 PM Beach Hazards Statement — Lake, IL, Northern Cook, IL, Central Cook, IL, Lake, IN, Porter, IN 10:00 AM

Lake County, Indiana, United States

Last updated: 6:08 PM CDT  ·  Refresh
24°C
Feels like 25°
Thunderstorm
▲ 28°  /  ▼ 20°
Wind
10 mph S
Humidity
80%
Dew Point
21°
Pressure
28.96 inHg
Visibility
9 mi
UV Index
3.6
Cloud Cover
68%
Sunrise
5:39 AM
Sunset
8:11 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lake County is currently thunderstorm at 24°C. Precipitation is likely — peak probability 54% around 7 PM. Atmospheric instability is elevated (CAPE up to 1299 J/kg) — isolated convective development possible. Sunrise: 5:39AM · Sunset: 8:11PM.

Alerts

Severe Thunderstorm Warning
Lake County, IN
Expires 6:15 PM
Severe Thunderstorm Watch
Expires 7:00 PM
Severe Thunderstorm Watch
Expires 7:00 PM
Heat Advisory
Boone, IL, McHenry, IL, Kane, IL, Kendall, IL, Kankakee, IL, Iroquois, IL, Northern Will, IL, Southern Will, IL, Eastern Will, IL, Winnebago, IL, Ogle, IL, Lee, IL, De Kalb, IL, La Salle, IL, Grundy, IL, Livingston, IL, Ford, IL, Porter, IN, Lake, IN, Newton, IN, Jasper, IN, Benton, IN
Expires 9:00 PM
Excessive Heat Warning
Winnebago, IL, Ogle, IL, Lee, IL, De Kalb, IL, La Salle, IL, Grundy, IL, Livingston, IL, Ford, IL, Lake, IN, Newton, IN, Jasper, IN, Benton, IN, Porter, IN, Boone, IL, McHenry, IL, Kane, IL, Kendall, IL, Lake, IL, DuPage, IL, Kankakee, IL, Iroquois, IL, Northern Cook, IL, Central Cook, IL, Southern Cook, IL, Northern Will, IL, Southern Will, IL, Eastern Will, IL
Expires 9:00 PM
Flood Warning
Cook County, IL, Lake County, IN
Expires 1:00 PM
Beach Hazards Statement
Lake, IL, Northern Cook, IL, Central Cook, IL, Lake, IN, Porter, IN
Expires 10:00 AM
43 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
48%
7 PM
26°
53%
8 PM
25°
35%
9 PM
24°
39%
10 PM
24°
36%
11 PM
24°
40%
12 AM
24°
28%
1 AM
24°
4%
2 AM
23°
4%
3 AM
22°
7%
4 AM
22°
7%
5 AM
21°
7%
6 AM
20°
14%
7 AM
20°
14%
8 AM
21°
27%
9 AM
22°
4%
10 AM
22°
4%
11 AM
23°
4%
12 PM
23°
4%
1 PM
22°
4%
2 PM
22°
4%
3 PM
22°
4%
4 PM
22°
4%
5 PM
24°
5%
7-Day Forecast
Tonight
28° 20°
Thunderstorm, 48% chance.
Tue
24° 19°
Fog with a 28% chance of rain.
Wed
28° 17°
Clear.
Thu
28° 18°
Clear with a 41% chance of rain.
Fri
23° 19°
Partly Cloudy with a 28% chance of rain.
Sat
24° 18°
Rain, 70% chance.
Sun
25° 18°
Clear with a 33% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Thunderstorm 48% 10 mph S 80%
7 PM 26° Mostly Clear 53% 10 mph SSW 79%
8 PM 25° Mostly Clear 35% 11 mph SSW 83%
9 PM 24° Partly Cloudy 39% 10 mph SW 87%
10 PM 24° Partly Cloudy 36% 8 mph SW 89%
11 PM 24° Partly Cloudy 40% 9 mph WSW 90%
12 AM 24° Mostly Clear 28% 9 mph WSW 90%
1 AM 24° Mostly Clear 4% 10 mph WNW 90%
2 AM 23° Partly Cloudy 4% 9 mph NW 92%
3 AM 22° Partly Cloudy 7% 11 mph NNW 95%
4 AM 22° Haze 7% 13 mph N 97%
5 AM 21° Mostly Cloudy 7% 14 mph N 96%
6 AM 20° Fog 14% 13 mph N 94%
7 AM 20° Haze 14% 14 mph N 92%
8 AM 21° Mostly Cloudy 27% 14 mph N 89%
9 AM 22° Mostly Cloudy 4% 14 mph N 85%
10 AM 22° Mostly Cloudy 4% 14 mph N 81%
11 AM 23° Mostly Cloudy 4% 14 mph N 78%
12 PM 23° Partly Cloudy 4% 14 mph N 76%
1 PM 22° Partly Cloudy 4% 15 mph N 73%
2 PM 22° Partly Cloudy 4% 15 mph N 71%
3 PM 22° Mostly Clear 4% 15 mph N 68%
4 PM 22° Mostly Clear 4% 15 mph N 66%
5 PM 24° Clear 5% 14 mph N 68%
15-Day Forecast
Today
7/27
Thunderstorm
48%
20°
28°
Tue
7/28
Fog
28%
19°
24°
Wed
7/29
Clear
3%
17°
28°
Thu
7/30
Clear
41%
18°
28°
Fri
7/31
Partly Cloudy
28%
19°
23°
Sat
8/1
Rain
70%
18°
24°
Sun
8/2
Clear
33%
18°
25°
Mon
8/3
Clear
27%
18°
27°
Tue
8/4
Thunderstorm
47%
19°
29°
Wed
8/5
Rain
66%
20°
26°
Thu
8/6
Rain
68%
18°
26°
Fri
8/7
Drizzle
60%
21°
26°
Sat
8/8
Rain
90%
21°
26°
Sun
8/9
Drizzle
60%
21°
26°
Mon
8/10
Drizzle
60%
20°
26°
43
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
43 AQI 7.7 µg/m³
O3
Ground-level ozone
38 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 43 Good 38 43
Wed 33 Good 33 21
Thu 34 Good 34 18
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 Mon Jul 27, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE554 J/kg
MLCAPE1184 J/kg
MUCAPE1920 J/kg
SBCIN-401 J/kg
MLCIN0 J/kg
Lifted Index-3.3
Kinematics
0–6 km Shear55 kt
0–1 km Shear31 kt
Eff. Shear73 kt
0–1 km SRH349
0–3 km SRH354
Eff. SRH121
Storm Motion273° @ 38 kt
0–1 km EHI1.2
Composite Parameters
Sig. Tornado2.0
STP (eff)0.0
Supercell8.8
K-Index38.7
Thermo & Levels
PWAT1.98 in
0–3 km LR4.2 °C/km
700–500 LR7.1 °C/km
Total Totals53.2
LCL940 hPa
LFC618 hPa
EL267 hPa
Freezing Lvl15,121 ft