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: 8:13 PM CDT  ·  Refresh
25°C
Feels like 28°
Rain
▲ 32°  /  ▼ 23°
Wind
5 mph SSE
Humidity
91%
Dew Point
23°
Pressure
28.97 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
90%
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 25°C. Precipitation is likely — peak probability 82% around 10 PM. Atmospheric instability is elevated (CAPE up to 1677 J/kg) — isolated convective development possible. Sunrise: 6:39AM · Sunset: 9:01PM.

Alerts

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
25°
65%
10 PM
24°
82%
11 PM
24°
66%
12 AM
24°
46%
1 AM
25°
34%
2 AM
24°
28%
3 AM
25°
27%
4 AM
25°
27%
5 AM
25°
11%
6 AM
23°
11%
7 AM
23°
19%
8 AM
23°
10%
9 AM
24°
13%
10 AM
25°
13%
11 AM
26°
3%
12 PM
26°
3%
1 PM
27°
3%
2 PM
28°
3%
3 PM
28°
3%
4 PM
30°
3%
5 PM
30°
3%
6 PM
29°
3%
7 PM
28°
3%
8 PM
27°
3%
7-Day Forecast
Tonight
32° 23°
Rain, 65% chance.
Tue
30° 17°
Partly Cloudy with a 46% chance of rain.
Wed
28° 16°
Clear.
Thu
28° 16°
Clear with a 21% chance of rain.
Fri
26° 19°
Clear with a 43% chance of rain.
Sat
23° 18°
Rain, 71% chance.
Sun
26° 18°
Rain, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Rain 65% 5 mph SSE 91%
10 PM 24° Rain 82% 9 mph SSE 93%
11 PM 24° Partly Cloudy 66% 10 mph S 92%
12 AM 24° Mostly Cloudy 46% 9 mph SSW 92%
1 AM 25° Mostly Cloudy 34% 9 mph SSW 93%
2 AM 24° Partly Cloudy 28% 9 mph SW 93%
3 AM 25° Partly Cloudy 27% 10 mph SW 92%
4 AM 25° Mostly Clear 27% 11 mph WSW 92%
5 AM 25° Mostly Clear 11% 11 mph WSW 92%
6 AM 23° Partly Cloudy 11% 10 mph W 92%
7 AM 23° Mostly Cloudy 19% 10 mph WNW 92%
8 AM 23° Mostly Cloudy 10% 10 mph NW 91%
9 AM 24° Mostly Cloudy 13% 11 mph NW 89%
10 AM 25° Mostly Cloudy 13% 11 mph NNW 85%
11 AM 26° Partly Cloudy 3% 12 mph NNW 80%
12 PM 26° Partly Cloudy 3% 12 mph NNW 77%
1 PM 27° Partly Cloudy 3% 12 mph NNW 74%
2 PM 28° Partly Cloudy 3% 12 mph NNW 71%
3 PM 28° Partly Cloudy 3% 12 mph NNW 70%
4 PM 30° Mostly Clear 3% 12 mph NNW 68%
5 PM 30° Mostly Clear 3% 12 mph NNW 68%
6 PM 29° Mostly Clear 3% 12 mph NNW 71%
7 PM 28° Mostly Clear 3% 12 mph NNW 74%
8 PM 27° Clear 3% 10 mph NNW 77%
15-Day Forecast
Today
7/27
Rain
65%
23°
32°
Tue
7/28
Partly Cloudy
46%
17°
30°
Wed
7/29
Clear
3%
16°
28°
Thu
7/30
Clear
21%
16°
28°
Fri
7/31
Clear
43%
19°
26°
Sat
8/1
Rain
71%
18°
23°
Sun
8/2
Rain
64%
18°
26°
Mon
8/3
Clear
17%
17°
28°
Tue
8/4
Drizzle
43%
18°
29°
Wed
8/5
Rain
68%
20°
30°
Thu
8/6
Drizzle
60%
20°
33°
Fri
8/7
Drizzle
60%
20°
33°
Sat
8/8
Drizzle
60%
20°
29°
Sun
8/9
Drizzle
60%
19°
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
SBCAPE1544 J/kg
MLCAPE1744 J/kg
MUCAPE2395 J/kg
SBCIN-236 J/kg
MLCIN0 J/kg
Lifted Index-4.9
Kinematics
0–6 km Shear48 kt
0–1 km Shear21 kt
Eff. Shear52 kt
0–1 km SRH14
0–3 km SRH26
Eff. SRH26
Storm Motion278° @ 38 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.2
STP (eff)0.0
Supercell1.7
K-Index32.4
Thermo & Levels
PWAT1.96 in
0–3 km LR5.0 °C/km
700–500 LR6.2 °C/km
Total Totals44.3
LCL955 hPa
LFC730 hPa
EL180 hPa
Freezing Lvl14,327 ft