Northerly Island to Calumet Harbor IL, LM

Last updated: 7:17 PM CDT  ·  Refresh
29°C
Feels like 33°
Rain
▲ 34°  /  ▼ 23°
Wind
7 mph ENE
Humidity
76%
Dew Point
23°
Pressure
29.96 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
70%
Sunrise
6:48 AM
Sunset
7:11 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Northerly Island to Calumet Harbor IL is currently rain at 29°C. Precipitation is likely — peak probability 74% around 7 PM. Atmospheric instability is elevated (CAPE up to 2188 J/kg) — isolated convective development possible. Sunrise: 6:48AM · Sunset: 7:11PM.

Alerts

No active alerts for this location.
34 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
74%
8 PM
28°
66%
9 PM
27°
62%
10 PM
27°
32%
11 PM
27°
33%
12 AM
26°
24%
1 AM
26°
7%
2 AM
25°
7%
3 AM
25°
7%
4 AM
25°
7%
5 AM
23°
7%
6 AM
23°
8%
7 AM
23°
10%
8 AM
25°
8%
9 AM
27°
8%
10 AM
29°
16%
11 AM
31°
18%
12 PM
32°
21%
1 PM
34°
25%
2 PM
35°
28%
3 PM
34°
28%
4 PM
34°
18%
5 PM
32°
18%
6 PM
32°
21%
7-Day Forecast
Tonight
34° 23°
Mostly Cloudy with a 74% chance of rain.
Tue
37° 23°
Mostly Clear with a 25% chance of rain.
Wed
36° 24°
Mostly Clear with a 56% chance of rain.
Thu
36° 23°
Clear with a 48% chance of rain.
Fri
36° 22°
Clear.
Sat
36° 22°
Rain, 68% chance.
Sun
36° 22°
Rain, 70% chance.
TimeTempConditionsPrecipWindHumidity
Now 28° Mostly Cloudy 74% 6 mph E 76%
8 PM 28° Overcast 66% 4 mph SSE 82%
9 PM 27° Mostly Cloudy 62% 3 mph S 84%
10 PM 27° Partly Cloudy 32% 3 mph S 86%
11 PM 27° Partly Cloudy 33% 3 mph S 86%
12 AM 26° Partly Cloudy 24% 2 mph SSW 87%
1 AM 26° Partly Cloudy 7% 3 mph S 88%
2 AM 25° Mostly Clear 7% 2 mph SW 89%
3 AM 25° Mostly Clear 7% 2 mph W 90%
4 AM 25° Clear 7% 2 mph NNW 92%
5 AM 23° Mostly Clear 7% 2 mph N 92%
6 AM 23° Mostly Clear 8% 2 mph NNE 93%
7 AM 23° Mostly Clear 10% 3 mph NE 91%
8 AM 25° Mostly Clear 8% 2 mph NE 84%
9 AM 27° Mostly Clear 8% 2 mph N 76%
10 AM 29° Clear 16% 2 mph N 69%
11 AM 31° Clear 18% 2 mph NNE 62%
12 PM 32° Mostly Clear 21% 2 mph NE 57%
1 PM 34° Mostly Clear 25% 2 mph NE 53%
2 PM 35° Mostly Clear 28% 2 mph ENE 53%
3 PM 34° Partly Cloudy 28% 2 mph E 54%
4 PM 34° Partly Cloudy 18% 3 mph ESE 55%
5 PM 32° Partly Cloudy 18% 3 mph ESE 58%
6 PM 32° Partly Cloudy 21% 3 mph ESE 60%
15-Day Forecast
Today
9/14
Mostly Cloudy
74%
23°
34°
Tue
9/15
Mostly Clear
25%
23°
37°
Wed
9/16
Mostly Clear
56%
24°
36°
Thu
9/17
Clear
48%
23°
36°
Fri
9/18
Clear
15%
22°
36°
Sat
9/19
Rain
68%
22°
36°
Sun
9/20
Rain
70%
22°
36°
Mon
9/21
Rain
71%
22°
36°
Tue
9/22
Drizzle
47%
22°
36°
Wed
9/23
Rain
59%
22°
36°
Thu
9/24
Clear
40%
22°
34°
Fri
9/25
Drizzle
60%
21°
34°
Sat
9/26
Drizzle
60%
21°
33°
Sun
9/27
Drizzle
60%
20°
33°
Mon
9/28
Drizzle
60%
20°
33°
34
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
34 AQI 6.1 µg/m³
O3
Ground-level ozone
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 34 Good 31 34
Wed 46 Good 36 46
Thu 44 Good 36 44
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 Sep 14, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1644 J/kg
MLCAPE2225 J/kg
MUCAPE2561 J/kg
SBCIN-87 J/kg
MLCIN-50 J/kg
Lifted Index-4.1
Kinematics
0–6 km Shear9 kt
0–1 km Shear4 kt
Eff. Shear15 kt
0–1 km SRH15
0–3 km SRH0
Eff. SRH0
Storm Motion319° @ 13 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.8
Thermo & Levels
PWAT2.49 in
0–3 km LR5.9 °C/km
700–500 LR5.5 °C/km
Total Totals48.4
LCL946 hPa
LFC825 hPa
EL154 hPa
Freezing Lvl16,063 ft