Franklin County, Illinois, United States

Last updated: 5:02 AM CDT  ·  Refresh
23°C
Feels like 23°
Partly Cloudy
▲ 37°  /  ▼ 18°
Wind
5 mph SSW
Humidity
66%
Dew Point
16°
Pressure
29.43 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
38%
Sunrise
6:41 AM
Sunset
6:55 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Franklin County is currently partly cloudy at 23°C. Precipitation is likely — peak probability 53% around 5 AM. Sunrise: 6:41AM · Sunset: 6:55PM.

Alerts

No active alerts for this location.
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
3%
6 AM
21°
19%
7 AM
21°
20%
8 AM
23°
14%
9 AM
26°
14%
10 AM
29°
14%
11 AM
30°
14%
12 PM
31°
14%
1 PM
34°
3%
2 PM
34°
4%
3 PM
36°
4%
4 PM
36°
4%
5 PM
36°
8%
6 PM
34°
11%
7 PM
33°
12%
8 PM
31°
19%
9 PM
28°
30%
10 PM
27°
35%
11 PM
26°
35%
12 AM
24°
35%
1 AM
23°
36%
2 AM
22°
42%
3 AM
22°
38%
4 AM
21°
49%
7-Day Forecast
Today
37° 18°
Mostly Cloudy with a 35% chance of rain.
Mon
30° 17°
Rain, 63% chance.
Tue
26° 14°
Overcast.
Wed
27° 11°
Overcast.
Thu
28° 11°
Partly Cloudy.
Fri
28° 13°
Overcast.
Sat
26° 13°
Overcast.
TimeTempConditionsPrecipWindHumidity
Now 23° Partly Cloudy 3% 5 mph SSW 66%
6 AM 21° Partly Cloudy 19% 6 mph SSW 65%
7 AM 21° Overcast 20% 6 mph SW 66%
8 AM 23° Overcast 14% 6 mph SW 59%
9 AM 26° Overcast 14% 8 mph SW 50%
10 AM 29° Overcast 14% 9 mph WSW 44%
11 AM 30° Mostly Cloudy 14% 9 mph WSW 43%
12 PM 31° Mostly Cloudy 14% 9 mph WSW 41%
1 PM 34° Partly Cloudy 3% 9 mph WSW 39%
2 PM 34° Mostly Cloudy 4% 9 mph WSW 35%
3 PM 36° Mostly Cloudy 4% 9 mph WSW 32%
4 PM 36° Overcast 4% 9 mph WSW 27%
5 PM 36° Mostly Cloudy 8% 8 mph WSW 29%
6 PM 34° Mostly Cloudy 11% 7 mph WSW 32%
7 PM 33° Partly Cloudy 12% 6 mph WSW 37%
8 PM 31° Partly Cloudy 19% 5 mph NNW 46%
9 PM 28° Partly Cloudy 30% 6 mph NE 55%
10 PM 27° Partly Cloudy 35% 8 mph NE 63%
11 PM 26° Partly Cloudy 35% 8 mph NNE 67%
12 AM 24° Mostly Cloudy 35% 8 mph N 77%
1 AM 23° Partly Cloudy 36% 7 mph N 84%
2 AM 22° Mostly Cloudy 42% 8 mph N 85%
3 AM 22° Mostly Cloudy 38% 8 mph N 85%
4 AM 21° Overcast 49% 9 mph N 85%
15-Day Forecast
Today
9/20
Mostly Cloudy
35%
18°
37°
Mon
9/21
Rain
63%
17°
30°
Tue
9/22
Overcast
19%
14°
26°
Wed
9/23
Overcast
3%
11°
27°
Thu
9/24
Partly Cloudy
15%
11°
28°
Fri
9/25
Overcast
19%
13°
28°
Sat
9/26
Overcast
18%
13°
26°
Sun
9/27
Partly Cloudy
39%
13°
28°
Mon
9/28
Clear
35%
14°
28°
Tue
9/29
Drizzle
51%
13°
28°
Wed
9/30
Drizzle
60%
15°
30°
Thu
10/1
Drizzle
60%
14°
29°
Fri
10/2
Drizzle
60%
14°
29°
Sat
10/3
Clear
60%
14°
29°
Sun
10/4
Clear
25%
13°
28°
52
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
52 AQI 9.4 µg/m³
O3
Ground-level ozone
44 AQI 48 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 44 52
Mon 55 Moderate 46 55
Tue 42 Good 42 41
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 Sun Sep 20, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE23 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index4.4
Kinematics
0–6 km Shear21 kt
0–1 km Shear19 kt
Eff. Shear—
0–1 km SRH65
0–3 km SRH39
Eff. SRH—
Storm Motion299° @ 14 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index20.9
Thermo & Levels
PWAT1.16 in
0–3 km LR5.0 °C/km
700–500 LR5.5 °C/km
Total Totals42.1
LCL899 hPa
LFC997 hPa
EL997 hPa
Freezing Lvl15,512 ft