Severe Thunderstorm Watch 9:00 PM

Franklin County, Illinois, United States

Last updated: 8:35 PM CDT  ·  Refresh
28°C
Feels like 31°
Clear
▲ 34°  /  ▼ 19°
Wind
8 mph NNW
Humidity
72%
Dew Point
21°
Pressure
29.38 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
4%
Sunrise
5:49 AM
Sunset
8:14 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Franklin County is currently clear at 28°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:49AM · Sunset: 8:14PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
41 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
11%
9 PM
26°
14%
10 PM
25°
14%
11 PM
24°
14%
12 AM
23°
7%
1 AM
22°
3%
2 AM
21°
3%
3 AM
21°
3%
4 AM
20°
4%
5 AM
19°
5%
6 AM
19°
5%
7 AM
20°
5%
8 AM
22°
5%
9 AM
23°
5%
10 AM
24°
5%
11 AM
25°
5%
12 PM
26°
5%
1 PM
27°
5%
2 PM
27°
5%
3 PM
28°
5%
4 PM
27°
3%
5 PM
27°
3%
6 PM
27°
3%
7 PM
26°
3%
7-Day Forecast
Tonight
34° 19°
Clear.
Wed
28° 17°
Partly Cloudy.
Thu
27° 14°
Clear.
Fri
23° 16°
Rain, 57% chance.
Sat
30° 18°
Mostly Cloudy with a 58% chance of rain.
Sun
34° 23°
Clear.
Mon
35° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Clear 11% 8 mph NNW 72%
9 PM 26° Mostly Clear 14% 8 mph NNW 76%
10 PM 25° Mostly Clear 14% 8 mph N 78%
11 PM 24° Clear 14% 8 mph N 80%
12 AM 23° Clear 7% 8 mph NNW 82%
1 AM 22° Clear 3% 7 mph NNW 83%
2 AM 21° Clear 3% 7 mph NNW 85%
3 AM 21° Clear 3% 7 mph NNW 87%
4 AM 20° Clear 4% 6 mph NNW 88%
5 AM 19° Clear 5% 7 mph NNW 88%
6 AM 19° Clear 5% 7 mph N 87%
7 AM 20° Clear 5% 8 mph N 84%
8 AM 22° Clear 5% 8 mph NNE 80%
9 AM 23° Clear 5% 9 mph NNE 76%
10 AM 24° Mostly Clear 5% 9 mph NNE 72%
11 AM 25° Partly Cloudy 5% 9 mph NNE 69%
12 PM 26° Mostly Cloudy 5% 10 mph NNE 66%
1 PM 27° Mostly Cloudy 5% 10 mph NNE 64%
2 PM 27° Mostly Cloudy 5% 11 mph NNE 62%
3 PM 28° Mostly Cloudy 5% 11 mph NNE 61%
4 PM 27° Mostly Cloudy 3% 11 mph NNE 62%
5 PM 27° Mostly Cloudy 3% 10 mph NNE 64%
6 PM 27° Mostly Cloudy 3% 10 mph NNE 67%
7 PM 26° Mostly Cloudy 3% 9 mph NNE 68%
15-Day Forecast
Today
7/21
Clear
14%
19°
34°
Wed
7/22
Partly Cloudy
5%
17°
28°
Thu
7/23
Clear
3%
14°
27°
Fri
7/24
Rain
57%
16°
23°
Sat
7/25
Mostly Cloudy
58%
18°
30°
Sun
7/26
Clear
17%
23°
34°
Mon
7/27
Clear
17%
23°
35°
Tue
7/28
Rain
27%
19°
33°
Wed
7/29
Drizzle
44%
18°
29°
Thu
7/30
Drizzle
44%
15°
29°
Fri
7/31
Drizzle
51%
16°
29°
Sat
8/1
Drizzle
60%
18°
29°
Sun
8/2
Clear
60%
19°
30°
Mon
8/3
Drizzle
60%
19°
31°
Tue
8/4
Drizzle
60%
20°
31°
41
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
41 AQI 7.4 µg/m³
O3
Ground-level ozone
Dominant
41 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 41 Good 41 41
Thu 31 Good 31 12
Fri 37 Good 37 3
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
SBCAPE7 J/kg
MLCAPE20 J/kg
MUCAPE90 J/kg
SBCIN-127 J/kg
MLCIN0 J/kg
Lifted Index1.0
Kinematics
0–6 km Shear41 kt
0–1 km Shear10 kt
Eff. Shear—
0–1 km SRH-72
0–3 km SRH-99
Eff. SRH—
Storm Motion279° @ 32 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index7.7
Thermo & Levels
PWAT1.56 in
0–3 km LR5.1 °C/km
700–500 LR5.7 °C/km
Total Totals40.2
LCL893 hPa
LFC819 hPa
EL762 hPa
Freezing Lvl17,014 ft