Severe Thunderstorm Watch 10:00 PM Severe Thunderstorm Watch 10:00 PM Areal Flood Advisory — Hancock County, IN, Hendricks County, IN, Johnson County, IN, Marion County, IN, Morgan County, IN, Shelby County, IN 11:00 PM

Johnson County, Indiana, United States

Last updated: 8:40 PM CDT  ·  Refresh
23°C
Feels like 27°
Rain
▲ 32°  /  ▼ 23°
Wind
6 mph S
Humidity
91%
Dew Point
22°
Pressure
28.97 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
79%
Sunrise
6:39 AM
Sunset
9:01 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johnson County is currently rain at 24°C. Precipitation is likely — peak probability 70% around 9 PM. Atmospheric instability is elevated (CAPE up to 2041 J/kg) — isolated convective development possible. Sunrise: 6:39AM · Sunset: 9:01PM.

Alerts

Severe Thunderstorm Watch
Expires 10:00 PM
Severe Thunderstorm Watch
Expires 10:00 PM
Areal Flood Advisory
Hancock County, IN, Hendricks County, IN, Johnson County, IN, Marion County, IN, Morgan County, IN, Shelby County, IN
Expires 11:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
70%
10 PM
24°
65%
11 PM
24°
64%
12 AM
24°
35%
1 AM
24°
37%
2 AM
24°
25%
3 AM
25°
24%
4 AM
25°
13%
5 AM
25°
5%
6 AM
23°
14%
7 AM
23°
5%
8 AM
24°
14%
9 AM
24°
13%
10 AM
25°
3%
11 AM
26°
5%
12 PM
26°
5%
1 PM
27°
5%
2 PM
27°
5%
3 PM
28°
5%
4 PM
29°
5%
5 PM
29°
3%
6 PM
28°
3%
7 PM
28°
3%
8 PM
27°
3%
7-Day Forecast
Tonight
32° 23°
Rain, 70% chance.
Tue
29° 17°
Mostly Cloudy with a 63% chance of rain.
Wed
28° 16°
Clear.
Thu
28° 16°
Clear with a 28% chance of rain.
Fri
26° 19°
Clear with a 43% chance of rain.
Sat
23° 18°
Rain, 71% chance.
Sun
26° 17°
Rain, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Rain 70% 6 mph S 91%
10 PM 24° Rain 65% 9 mph S 93%
11 PM 24° Mostly Cloudy 64% 9 mph S 92%
12 AM 24° Mostly Cloudy 35% 9 mph SSW 93%
1 AM 24° Mostly Cloudy 37% 9 mph SW 93%
2 AM 24° Partly Cloudy 25% 10 mph SW 93%
3 AM 25° Mostly Clear 24% 10 mph WSW 92%
4 AM 25° Partly Cloudy 13% 10 mph WSW 92%
5 AM 25° Partly Cloudy 5% 10 mph W 92%
6 AM 23° Partly Cloudy 14% 10 mph W 92%
7 AM 23° Partly Cloudy 5% 10 mph WNW 92%
8 AM 24° Partly Cloudy 14% 10 mph NW 90%
9 AM 24° Partly Cloudy 13% 11 mph NNW 87%
10 AM 25° Mostly Cloudy 3% 12 mph NNW 83%
11 AM 26° Mostly Cloudy 5% 12 mph NNW 79%
12 PM 26° Mostly Cloudy 5% 12 mph NNW 76%
1 PM 27° Mostly Cloudy 5% 11 mph NNW 73%
2 PM 27° Mostly Cloudy 5% 11 mph NNW 71%
3 PM 28° Partly Cloudy 5% 12 mph NNW 69%
4 PM 29° Partly Cloudy 5% 12 mph NNW 67%
5 PM 29° Partly Cloudy 3% 12 mph NNW 69%
6 PM 28° Partly Cloudy 3% 12 mph NNW 72%
7 PM 28° Partly Cloudy 3% 11 mph NNW 75%
8 PM 27° Mostly Clear 3% 11 mph NNW 78%
15-Day Forecast
Today
7/27
Rain
70%
23°
32°
Tue
7/28
Mostly Cloudy
63%
17°
29°
Wed
7/29
Clear
3%
16°
28°
Thu
7/30
Clear
28%
16°
28°
Fri
7/31
Clear
43%
19°
26°
Sat
8/1
Rain
71%
18°
23°
Sun
8/2
Rain
64%
17°
26°
Mon
8/3
Clear
17%
17°
27°
Tue
8/4
Drizzle
44%
18°
29°
Wed
8/5
Rain
68%
20°
30°
Thu
8/6
Drizzle
60%
19°
33°
Fri
8/7
Drizzle
60%
18°
33°
Sat
8/8
Drizzle
60%
18°
28°
Sun
8/9
Drizzle
60%
18°
29°
Mon
8/10
Drizzle
60%
19°
29°
53
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
53 AQI 10.0 µg/m³
O3
Ground-level ozone
38 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 38 53
Wed 44 Good 44 39
Thu 39 Good 39 36
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 Mon Jul 27, 23:00'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
SBCAPE754 J/kg
MLCAPE1282 J/kg
MUCAPE2504 J/kg
SBCIN-329 J/kg
MLCIN0 J/kg
Lifted Index-3.9
Kinematics
0–6 km Shear54 kt
0–1 km Shear13 kt
Eff. Shear62 kt
0–1 km SRH23
0–3 km SRH70
Eff. SRH95
Storm Motion284° @ 36 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.2
STP (eff)0.0
Supercell7.6
K-Index29.8
Thermo & Levels
PWAT1.85 in
0–3 km LR4.6 °C/km
700–500 LR6.4 °C/km
Total Totals44.6
LCL961 hPa
LFC700 hPa
EL204 hPa
Freezing Lvl14,882 ft