Franklin County, Illinois, United States

Last updated: 10:17 PM CDT  ·  Refresh
26°C
Feels like 28°
Mostly Clear
▲ 34°  /  ▼ 18°
Wind
6 mph NNW
Humidity
78%
Dew Point
20°
Pressure
29.41 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
30%
Sunrise
5:49 AM
Sunset
8:14 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Franklin County is currently mostly clear at 26°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:49AM · Sunset: 8:14PM.

Alerts

No active alerts for this location.
41 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
3%
11 PM
25°
14%
12 AM
24°
14%
1 AM
23°
3%
2 AM
22°
3%
3 AM
21°
3%
4 AM
20°
4%
5 AM
19°
4%
6 AM
19°
4%
7 AM
19°
5%
8 AM
21°
5%
9 AM
23°
5%
10 AM
24°
5%
11 AM
26°
5%
12 PM
26°
5%
1 PM
28°
5%
2 PM
28°
5%
3 PM
28°
5%
4 PM
28°
3%
5 PM
28°
3%
6 PM
27°
3%
7 PM
27°
3%
8 PM
26°
3%
9 PM
23°
3%
7-Day Forecast
Tonight
34° 18°
Mostly Clear.
Wed
28° 17°
Mostly Clear.
Thu
27° 14°
Partly Cloudy.
Fri
23° 16°
Overcast with a 64% chance of rain.
Sat
30° 17°
Overcast with a 51% chance of rain.
Sun
34° 23°
Clear.
Mon
35° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Clear 3% 6 mph NNW 78%
11 PM 25° Mostly Clear 14% 8 mph NNW 80%
12 AM 24° Clear 14% 8 mph NNW 83%
1 AM 23° Clear 3% 7 mph NNW 85%
2 AM 22° Clear 3% 7 mph NNW 86%
3 AM 21° Clear 3% 6 mph NNW 88%
4 AM 20° Clear 4% 6 mph NNW 89%
5 AM 19° Clear 4% 6 mph NNW 89%
6 AM 19° Clear 4% 7 mph N 89%
7 AM 19° Clear 5% 8 mph N 86%
8 AM 21° Clear 5% 8 mph NNE 81%
9 AM 23° Mostly Clear 5% 8 mph NNE 76%
10 AM 24° Mostly Clear 5% 9 mph NE 70%
11 AM 26° Mostly Clear 5% 9 mph NNE 66%
12 PM 26° Partly Cloudy 5% 10 mph NNE 61%
1 PM 28° Partly Cloudy 5% 10 mph NNE 58%
2 PM 28° Partly Cloudy 5% 10 mph NNE 56%
3 PM 28° Partly Cloudy 5% 11 mph NNE 56%
4 PM 28° Partly Cloudy 3% 10 mph NNE 57%
5 PM 28° Partly Cloudy 3% 10 mph NNE 61%
6 PM 27° Partly Cloudy 3% 9 mph NNE 64%
7 PM 27° Partly Cloudy 3% 9 mph NNE 68%
8 PM 26° Partly Cloudy 3% 8 mph NNE 70%
9 PM 23° Partly Cloudy 3% 8 mph NNE 72%
15-Day Forecast
Today
7/21
Mostly Clear
3%
18°
34°
Wed
7/22
Mostly Clear
5%
17°
28°
Thu
7/23
Partly Cloudy
3%
14°
27°
Fri
7/24
Overcast
64%
16°
23°
Sat
7/25
Overcast
51%
17°
30°
Sun
7/26
Clear
17%
23°
34°
Mon
7/27
Clear
17%
23°
35°
Tue
7/28
Clear
28%
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
Drizzle
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Wed Jul 22, 02:00'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
SBCAPE0 J/kg
MLCAPE7 J/kg
MUCAPE9 J/kg
SBCIN-3721 J/kg
MLCIN0 J/kg
Lifted Index3.4
Kinematics
0–6 km Shear43 kt
0–1 km Shear8 kt
Eff. Shear—
0–1 km SRH-55
0–3 km SRH-92
Eff. SRH—
Storm Motion284° @ 29 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)—
Supercell—
K-Index9.5
Thermo & Levels
PWAT1.45 in
0–3 km LR4.6 °C/km
700–500 LR5.0 °C/km
Total Totals36.0
LCL917 hPa
LFC—
EL—
Freezing Lvl17,749 ft