Severe Thunderstorm Watch 9:00 PM

Hamilton County, Illinois, United States

Last updated: 8:27 PM CDT  ·  Refresh
27°C
Feels like 29°
Mostly Clear
▲ 33°  /  ▼ 18°
Wind
8 mph NNW
Humidity
72%
Dew Point
20°
Pressure
29.37 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
14%
Sunrise
5:48 AM
Sunset
8:12 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Hamilton County is currently mostly clear at 27°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:48AM · Sunset: 8:12PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
43 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
11%
9 PM
26°
7%
10 PM
24°
7%
11 PM
23°
7%
12 AM
22°
3%
1 AM
22°
3%
2 AM
21°
3%
3 AM
20°
3%
4 AM
20°
4%
5 AM
18°
5%
6 AM
19°
5%
7 AM
20°
5%
8 AM
21°
5%
9 AM
23°
5%
10 AM
24°
5%
11 AM
24°
5%
12 PM
25°
5%
1 PM
27°
5%
2 PM
27°
5%
3 PM
27°
5%
4 PM
27°
3%
5 PM
27°
3%
6 PM
26°
3%
7 PM
26°
3%
7-Day Forecast
Tonight
33° 18°
Mostly Clear.
Wed
28° 16°
Partly Cloudy.
Thu
27° 14°
Clear.
Fri
22° 16°
Overcast with a 44% chance of rain.
Sat
29° 18°
Mostly Cloudy with a 58% chance of rain.
Sun
34° 22°
Clear.
Mon
34° 23°
Clear with a 31% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 11% 8 mph NNW 72%
9 PM 26° Mostly Clear 7% 10 mph NNW 76%
10 PM 24° Clear 7% 9 mph NNW 78%
11 PM 23° Clear 7% 9 mph NNW 81%
12 AM 22° Clear 3% 8 mph NNW 83%
1 AM 22° Clear 3% 8 mph NNW 85%
2 AM 21° Clear 3% 7 mph NNW 87%
3 AM 20° Clear 3% 7 mph NNW 89%
4 AM 20° Clear 4% 7 mph NNW 90%
5 AM 18° Clear 5% 7 mph NNW 90%
6 AM 19° Clear 5% 8 mph N 90%
7 AM 20° Clear 5% 8 mph N 88%
8 AM 21° Mostly Clear 5% 9 mph NNE 84%
9 AM 23° Mostly Clear 5% 9 mph NNE 79%
10 AM 24° Partly Cloudy 5% 10 mph NNE 74%
11 AM 24° Partly Cloudy 5% 10 mph NNE 71%
12 PM 25° Mostly Cloudy 5% 11 mph NNE 68%
1 PM 27° Mostly Cloudy 5% 12 mph NNE 65%
2 PM 27° Partly Cloudy 5% 12 mph NNE 63%
3 PM 27° Partly Cloudy 5% 12 mph NNE 61%
4 PM 27° Partly Cloudy 3% 12 mph NNE 62%
5 PM 27° Partly Cloudy 3% 11 mph NNE 64%
6 PM 26° Partly Cloudy 3% 10 mph NNE 68%
7 PM 26° Partly Cloudy 3% 10 mph NNE 70%
15-Day Forecast
Today
7/21
Mostly Clear
11%
18°
33°
Wed
7/22
Partly Cloudy
5%
16°
28°
Thu
7/23
Clear
3%
14°
27°
Fri
7/24
Overcast
44%
16°
22°
Sat
7/25
Mostly Cloudy
58%
18°
29°
Sun
7/26
Clear
17%
22°
34°
Mon
7/27
Clear
31%
23°
34°
Tue
7/28
Rain
27%
19°
33°
Wed
7/29
Drizzle
44%
17°
29°
Thu
7/30
Drizzle
44%
16°
29°
Fri
7/31
Clear
36%
17°
29°
Sat
8/1
Drizzle
60%
18°
29°
Sun
8/2
Drizzle
60%
19°
30°
Mon
8/3
Drizzle
60%
19°
31°
Tue
8/4
Drizzle
60%
20°
31°
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 7.9 µg/m³
O3
Ground-level ozone
40 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 43 Good 40 43
Thu 33 Good 33 9
Fri 40 Good 40 4
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 Jul 21, 23:00'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
SBCAPE8 J/kg
MLCAPE14 J/kg
MUCAPE8 J/kg
SBCIN-152 J/kg
MLCIN0 J/kg
Lifted Index1.0
Kinematics
0–6 km Shear41 kt
0–1 km Shear9 kt
Eff. Shear—
0–1 km SRH-66
0–3 km SRH-97
Eff. SRH—
Storm Motion277° @ 31 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index9.6
Thermo & Levels
PWAT1.49 in
0–3 km LR5.0 °C/km
700–500 LR5.6 °C/km
Total Totals40.1
LCL899 hPa
LFC814 hPa
EL757 hPa
Freezing Lvl16,745 ft