Sangamon County, Illinois, United States

Last updated: 12:04 AM CDT  ·  Refresh
27°C
Feels like 28°
Clear
▲ 33°  /  ▼ 20°
Wind
9 mph SSW
Humidity
63%
Dew Point
20°
Pressure
29.34 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
1%
Sunrise
6:26 AM
Sunset
7:29 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Sangamon County is currently clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1375 J/kg) — isolated convective development possible. Sunrise: 6:26AM · Sunset: 7:29PM.

Alerts

No active alerts for this location.
58 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
1 AM
27°
3%
2 AM
27°
3%
3 AM
26°
3%
4 AM
25°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
23°
3%
8 AM
26°
3%
9 AM
28°
3%
10 AM
31°
3%
11 AM
32°
3%
12 PM
33°
3%
1 PM
36°
3%
2 PM
37°
3%
3 PM
37°
3%
4 PM
38°
3%
5 PM
38°
3%
6 PM
37°
3%
7 PM
36°
3%
8 PM
34°
3%
9 PM
32°
3%
10 PM
31°
3%
11 PM
29°
3%
7-Day Forecast
Today
33° 20°
Clear.
Tue
38° 23°
Clear.
Wed
40° 22°
Clear.
Thu
39° 22°
Mostly Clear.
Fri
41° 23°
Clear.
Sat
41° 23°
Clear.
Sun
39° 20°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 3% 9 mph SSW 63%
1 AM 27° Clear 3% 9 mph SSW 58%
2 AM 27° Clear 3% 9 mph SSW 60%
3 AM 26° Clear 3% 8 mph SSW 63%
4 AM 25° Clear 3% 8 mph SSW 65%
5 AM 23° Clear 3% 8 mph SW 67%
6 AM 23° Clear 3% 8 mph SW 69%
7 AM 23° Clear 3% 7 mph SW 70%
8 AM 26° Clear 3% 8 mph SW 63%
9 AM 28° Clear 3% 10 mph WSW 55%
10 AM 31° Mostly Clear 3% 9 mph WSW 50%
11 AM 32° Mostly Clear 3% 9 mph WSW 47%
12 PM 33° Mostly Clear 3% 8 mph WSW 45%
1 PM 36° Mostly Clear 3% 8 mph WSW 42%
2 PM 37° Mostly Clear 3% 7 mph WSW 39%
3 PM 37° Clear 3% 7 mph SW 35%
4 PM 38° Clear 3% 7 mph SW 33%
5 PM 38° Clear 3% 7 mph SW 36%
6 PM 37° Clear 3% 7 mph SSW 41%
7 PM 36° Clear 3% 7 mph SSW 45%
8 PM 34° Clear 3% 7 mph SSW 48%
9 PM 32° Clear 3% 7 mph SSW 52%
10 PM 31° Clear 3% 8 mph SSW 55%
11 PM 29° Clear 3% 8 mph SSW 56%
15-Day Forecast
Today
8/31
Clear
3%
20°
33°
Tue
9/1
Clear
3%
23°
38°
Wed
9/2
Clear
7%
22°
40°
Thu
9/3
Mostly Clear
8%
22°
39°
Fri
9/4
Clear
19%
23°
41°
Sat
9/5
Clear
19%
23°
41°
Sun
9/6
Clear
19%
20°
39°
Mon
9/7
Clear
19%
17°
38°
Tue
9/8
Drizzle
60%
19°
39°
Wed
9/9
Drizzle
60%
20°
39°
Thu
9/10
Drizzle
60%
18°
36°
Fri
9/11
Drizzle
60%
19°
35°
Sat
9/12
Drizzle
60%
17°
33°
Sun
9/13
Drizzle
60%
17°
32°
Mon
9/14
Drizzle
60%
17°
31°
58
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
58 AQI 12.9 µg/m³
O3
Ground-level ozone
48 AQI 53 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 58 Moderate 48 58
Wed 59 Moderate 49 59
Thu 48 Good 44 48
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 Sep 1, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE321 J/kg
MLCAPE379 J/kg
MUCAPE895 J/kg
SBCIN-655 J/kg
MLCIN-413 J/kg
Lifted Index-1.4
Kinematics
0–6 km Shear18 kt
0–1 km Shear16 kt
Eff. Shear—
0–1 km SRH137
0–3 km SRH144
Eff. SRH—
Storm Motion333° @ 12 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index30.9
Thermo & Levels
PWAT1.54 in
0–3 km LR4.8 °C/km
700–500 LR6.8 °C/km
Total Totals45.1
LCL894 hPa
LFC584 hPa
EL232 hPa
Freezing Lvl15,764 ft