Extreme Heat Warning — Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, McLean, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Champaign, IL, Vermilion, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Edgar, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL 7:00 PM Heat Advisory — Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, McLean, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Champaign, IL, Vermilion, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Edgar, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL 7:00 PM

Piatt County, Illinois, United States

Last updated: 1:51 AM CDT  ·  Refresh
77°F
Feels like 79°
Clear
▲ 96°  /  ▼ 72°
Wind
7 mph S
Humidity
71%
Dew Point
68°
Pressure
29.24 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
3%
Sunrise
6:24 AM
Sunset
7:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Piatt County is currently clear at 77°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1906 J/kg) — isolated convective development possible. Sunrise: 6:24AM · Sunset: 7:22PM.

Alerts

Extreme Heat Warning
Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, McLean, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Champaign, IL, Vermilion, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Edgar, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL
Expires 7:00 PM
Heat Advisory
Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, McLean, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Champaign, IL, Vermilion, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Edgar, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL
Expires 7:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
77°
8%
2 AM
76°
8%
3 AM
76°
3%
4 AM
75°
3%
5 AM
72°
3%
6 AM
72°
3%
7 AM
76°
7%
8 AM
81°
15%
9 AM
85°
15%
10 AM
87°
15%
11 AM
89°
16%
12 PM
91°
16%
1 PM
95°
16%
2 PM
96°
17%
3 PM
96°
17%
4 PM
94°
17%
5 PM
95°
8%
6 PM
93°
3%
7 PM
91°
3%
8 PM
88°
3%
9 PM
81°
3%
10 PM
80°
3%
11 PM
80°
3%
12 AM
79°
3%
7-Day Forecast
Today
96° 72°
Clear.
Fri
102° 72°
Clear.
Sat
101° 72°
Partly Cloudy with a 26% chance of rain.
Sun
86° 63°
Overcast.
Mon
91° 58°
Clear.
Tue
98° 63°
Rain, 42% chance.
Wed
105° 72°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 77° Clear 8% 7 mph S 71%
2 AM 76° Clear 8% 7 mph SSW 68%
3 AM 76° Clear 3% 7 mph SSW 71%
4 AM 75° Clear 3% 6 mph SSW 74%
5 AM 72° Clear 3% 6 mph SSW 76%
6 AM 72° Clear 3% 6 mph SSW 79%
7 AM 76° Clear 7% 7 mph SSW 74%
8 AM 81° Clear 15% 8 mph SW 66%
9 AM 85° Clear 15% 9 mph SW 59%
10 AM 87° Clear 15% 10 mph SW 54%
11 AM 89° Clear 16% 10 mph SW 49%
12 PM 91° Clear 16% 11 mph SW 45%
1 PM 95° Clear 16% 10 mph SW 43%
2 PM 96° Clear 17% 9 mph SW 42%
3 PM 96° Clear 17% 9 mph SW 42%
4 PM 94° Clear 17% 7 mph SW 47%
5 PM 95° Clear 8% 6 mph SW 54%
6 PM 93° Clear 3% 5 mph SSW 61%
7 PM 91° Clear 3% 5 mph SSW 64%
8 PM 88° Clear 3% 6 mph S 66%
9 PM 81° Clear 3% 7 mph S 68%
10 PM 80° Clear 3% 7 mph S 68%
11 PM 80° Clear 3% 7 mph S 68%
12 AM 79° Clear 3% 7 mph S 68%
15-Day Forecast
Today
9/3
Clear
17%
72°
96°
Fri
9/4
Clear
12%
72°
102°
Sat
9/5
Partly Cloudy
26%
72°
101°
Sun
9/6
Overcast
10%
63°
86°
Mon
9/7
Clear
16%
58°
91°
Tue
9/8
Rain
42%
63°
98°
Wed
9/9
Clear
17%
72°
105°
Thu
9/10
Rain
69%
68°
100°
Fri
9/11
Clear
44%
67°
101°
Sat
9/12
Drizzle
51%
69°
102°
Sun
9/13
Drizzle
60%
67°
92°
Mon
9/14
Drizzle
60%
67°
92°
Tue
9/15
Drizzle
60%
64°
89°
Wed
9/16
Drizzle
60%
62°
87°
Thu
9/17
Drizzle
60%
61°
86°
55
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
55 AQI 11.0 µg/m³
O3
Ground-level ozone
46 AQI 50 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 46 55
Fri 48 Good 45 48
Sat 44 Good 44 44
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 Thu Sep 3, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE120 J/kg
MLCAPE192 J/kg
MUCAPE406 J/kg
SBCIN-530 J/kg
MLCIN-270 J/kg
Lifted Index-0.7
Kinematics
0–6 km Shear20 kt
0–1 km Shear10 kt
Eff. Shear10 kt
0–1 km SRH59
0–3 km SRH60
Eff. SRH5
Storm Motion317° @ 14 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.2
Thermo & Levels
PWAT1.40 in
0–3 km LR5.3 °C/km
700–500 LR5.6 °C/km
Total Totals45.9
LCL920 hPa
LFC540 hPa
EL306 hPa
Freezing Lvl15,801 ft