Heat Advisory — Carroll, IN, Warren, IN, Tippecanoe, IN, Clinton, IN, Howard, IN, Fountain, IN, Montgomery, IN, Boone, IN, Tipton, IN, Hamilton, IN, Madison, IN, Delaware, IN, Randolph, IN, Vermillion, IN, Parke, IN, Putnam, IN, Hendricks, IN, Marion, IN, Hancock, IN, Henry, IN, Vigo, IN, Clay, IN, Owen, IN, Morgan, IN, Johnson, IN, Shelby, IN, Rush, IN, Sullivan, IN, Greene, IN, Monroe, IN, Brown, IN, Bartholomew, IN, Decatur, IN, Knox, IN, Daviess, IN, Martin, IN, Lawrence, IN, Jackson, IN, Jennings, IN 8:00 PM

Johnson County, Indiana, United States

Last updated: 3:06 PM CDT  ·  Refresh
31°C
Feels like 36°
Mostly Clear
▲ 32°  /  ▼ 19°
Wind
7 mph WSW
Humidity
63%
Dew Point
23°
Pressure
29.16 inHg
Visibility
10 mi
UV Index
8.7
Cloud Cover
18%
Sunrise
6:22 AM
Sunset
9:15 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johnson County is currently mostly clear at 31°C. Precipitation is likely — peak probability 67% around 12 AM. Atmospheric instability is elevated (CAPE up to 2515 J/kg) — isolated convective development possible. Sunrise: 6:22AM · Sunset: 9:15PM.

Alerts

Heat Advisory
Carroll, IN, Warren, IN, Tippecanoe, IN, Clinton, IN, Howard, IN, Fountain, IN, Montgomery, IN, Boone, IN, Tipton, IN, Hamilton, IN, Madison, IN, Delaware, IN, Randolph, IN, Vermillion, IN, Parke, IN, Putnam, IN, Hendricks, IN, Marion, IN, Hancock, IN, Henry, IN, Vigo, IN, Clay, IN, Owen, IN, Morgan, IN, Johnson, IN, Shelby, IN, Rush, IN, Sullivan, IN, Greene, IN, Monroe, IN, Brown, IN, Bartholomew, IN, Decatur, IN, Knox, IN, Daviess, IN, Martin, IN, Lawrence, IN, Jackson, IN, Jennings, IN
Expires 8:00 PM
58 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
35%
5 PM
31°
51%
6 PM
32°
56%
7 PM
30°
59%
8 PM
29°
59%
9 PM
27°
53%
10 PM
26°
53%
11 PM
24°
57%
12 AM
23°
67%
1 AM
23°
49%
2 AM
22°
36%
3 AM
22°
36%
4 AM
21°
31%
5 AM
21°
23%
6 AM
19°
23%
7 AM
19°
19%
8 AM
20°
18%
9 AM
21°
24%
10 AM
22°
27%
11 AM
24°
38%
12 PM
25°
38%
1 PM
26°
39%
2 PM
26°
39%
3 PM
27°
44%
7-Day Forecast
Today
32° 19°
Mostly Clear with a 59% chance of rain.
Sun
29° 19°
Partly Cloudy with a 49% chance of rain.
Mon
27° 19°
Mostly Cloudy with a 28% chance of rain.
Tue
27° 17°
Partly Cloudy.
Wed
28° 19°
Drizzle, 51% chance.
Thu
29° 19°
Heavy Rain, 90% chance.
Fri
26° 20°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Mostly Clear 35% 7 mph WSW 63%
5 PM 31° Mostly Clear 51% 7 mph WSW 64%
6 PM 32° Mostly Clear 56% 6 mph W 69%
7 PM 30° Partly Cloudy 59% 6 mph W 75%
8 PM 29° Mostly Cloudy 59% 8 mph WNW 81%
9 PM 27° Partly Cloudy 53% 6 mph WNW 84%
10 PM 26° Partly Cloudy 53% 6 mph NW 88%
11 PM 24° Overcast 57% 8 mph NNE 90%
12 AM 23° Overcast 67% 7 mph NNE 92%
1 AM 23° Overcast 49% 4 mph N 93%
2 AM 22° Overcast 36% 4 mph NW 94%
3 AM 22° Mostly Cloudy 36% 4 mph NW 95%
4 AM 21° Partly Cloudy 31% 4 mph W 96%
5 AM 21° Partly Cloudy 23% 4 mph WSW 97%
6 AM 19° Partly Cloudy 23% 4 mph W 97%
7 AM 19° Partly Cloudy 19% 4 mph WNW 96%
8 AM 20° Partly Cloudy 18% 4 mph NW 95%
9 AM 21° Partly Cloudy 24% 4 mph NW 91%
10 AM 22° Partly Cloudy 27% 4 mph NW 87%
11 AM 24° Partly Cloudy 38% 4 mph NW 83%
12 PM 25° Partly Cloudy 38% 4 mph NW 81%
1 PM 26° Partly Cloudy 39% 4 mph NW 78%
2 PM 26° Partly Cloudy 39% 4 mph NNW 75%
3 PM 27° Partly Cloudy 44% 5 mph NNW 74%
15-Day Forecast
Today
7/4
Mostly Clear
59%
19°
32°
Sun
7/5
Partly Cloudy
49%
19°
29°
Mon
7/6
Mostly Cloudy
28%
19°
27°
Tue
7/7
Partly Cloudy
14%
17°
27°
Wed
7/8
Drizzle
51%
19°
28°
Thu
7/9
Heavy Rain
90%
19°
29°
Fri
7/10
Rain
63%
20°
26°
Sat
7/11
Rain
69%
19°
27°
Sun
7/12
Rain
68%
17°
26°
Mon
7/13
Rain
68%
14°
25°
Tue
7/14
Drizzle
60%
14°
26°
Wed
7/15
Drizzle
60%
17°
27°
Thu
7/16
Drizzle
60%
17°
26°
Fri
7/17
Drizzle
60%
17°
26°
Sat
7/18
Drizzle
60%
17°
26°
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 13.0 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sun 58 Moderate 36 58
Mon 55 Moderate 44 55
Tue 54 Moderate 39 54
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 Sat Jul 4, 18:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3473 J/kg
MLCAPE1924 J/kg
MUCAPE3473 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-7.1
Kinematics
0–6 km Shear14 kt
0–1 km Shear1 kt
Eff. Shear16 kt
0–1 km SRH0
0–3 km SRH-37
Eff. SRH-37
Storm Motion199° @ 17 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.5
Thermo & Levels
PWAT1.70 in
0–3 km LR7.8 °C/km
700–500 LR5.4 °C/km
Total Totals45.3
LCL878 hPa
LFC987 hPa
EL144 hPa
Freezing Lvl14,288 ft