Johnson County, Indiana, United States

Last updated: 1:45 AM CDT  ·  Refresh
23°C
Feels like 26°
Partly Cloudy
▲ 28°  /  ▼ 16°
Wind
7 mph SW
Humidity
93%
Dew Point
23°
Pressure
28.89 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
36%
Sunrise
6:40 AM
Sunset
9:00 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johnson County is currently partly cloudy at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1695 J/kg) — isolated convective development possible. Sunrise: 6:40AM · Sunset: 9:00PM.

Alerts

No active alerts for this location.
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
18%
3 AM
25°
32%
4 AM
25°
24%
5 AM
23°
22%
6 AM
23°
3%
7 AM
23°
3%
8 AM
24°
3%
9 AM
24°
3%
10 AM
24°
3%
11 AM
25°
5%
12 PM
26°
5%
1 PM
27°
5%
2 PM
27°
5%
3 PM
28°
5%
4 PM
28°
5%
5 PM
28°
3%
6 PM
27°
3%
7 PM
27°
3%
8 PM
26°
3%
9 PM
23°
3%
10 PM
22°
3%
11 PM
22°
3%
12 AM
21°
3%
1 AM
21°
3%
7-Day Forecast
Today
28° 16°
Partly Cloudy with a 22% chance of rain.
Wed
28° 16°
Fog.
Thu
30° 16°
Clear.
Fri
26° 18°
Fog with a 60% chance of rain.
Sat
26° 18°
Rain, 90% chance.
Sun
27° 18°
Rain, 64% chance.
Mon
28° 17°
Rain, 27% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Partly Cloudy 18% 7 mph SW 93%
3 AM 25° Mostly Clear 32% 11 mph WSW 90%
4 AM 25° Rain 24% 10 mph WSW 88%
5 AM 23° Partly Cloudy 22% 9 mph W 89%
6 AM 23° Mostly Clear 3% 9 mph W 91%
7 AM 23° Partly Cloudy 3% 10 mph WNW 93%
8 AM 24° Mostly Cloudy 3% 11 mph NW 91%
9 AM 24° Overcast 3% 11 mph NW 89%
10 AM 24° Overcast 3% 11 mph NNW 86%
11 AM 25° Overcast 5% 11 mph NNW 83%
12 PM 26° Mostly Cloudy 5% 11 mph NNW 80%
1 PM 27° Partly Cloudy 5% 11 mph NNW 76%
2 PM 27° Partly Cloudy 5% 11 mph NNW 73%
3 PM 28° Partly Cloudy 5% 12 mph NNW 72%
4 PM 28° Partly Cloudy 5% 12 mph NNW 71%
5 PM 28° Partly Cloudy 3% 12 mph NNW 71%
6 PM 27° Mostly Clear 3% 12 mph NNW 72%
7 PM 27° Mostly Clear 3% 11 mph NNW 75%
8 PM 26° Mostly Clear 3% 10 mph NNW 78%
9 PM 23° Clear 3% 10 mph NNW 82%
10 PM 22° Clear 3% 9 mph NNW 85%
11 PM 22° Clear 3% 9 mph NNW 86%
12 AM 21° Clear 3% 8 mph NNW 86%
1 AM 21° Clear 3% 8 mph NNW 87%
15-Day Forecast
Today
7/28
Partly Cloudy
22%
16°
28°
Wed
7/29
Fog
3%
16°
28°
Thu
7/30
Clear
14%
16°
30°
Fri
7/31
Fog
60%
18°
26°
Sat
8/1
Rain
90%
18°
26°
Sun
8/2
Rain
64%
18°
27°
Mon
8/3
Rain
27%
17°
28°
Tue
8/4
Rain
68%
18°
30°
Wed
8/5
Rain
68%
20°
30°
Thu
8/6
Drizzle
51%
20°
29°
Fri
8/7
Drizzle
60%
18°
28°
Sat
8/8
Drizzle
60%
18°
28°
Sun
8/9
Drizzle
60%
18°
29°
Mon
8/10
Drizzle
60%
19°
29°
Tue
8/11
Drizzle
60%
19°
28°
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 Tue Jul 28, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE832 J/kg
MLCAPE1554 J/kg
MUCAPE2247 J/kg
SBCIN-257 J/kg
MLCIN0 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear43 kt
0–1 km Shear38 kt
Eff. Shear47 kt
0–1 km SRH204
0–3 km SRH265
Eff. SRH247
Storm Motion281° @ 39 kt
0–1 km EHI1.1
Composite Parameters
Sig. Tornado1.6
STP (eff)0.0
Supercell13.4
K-Index31.9
Thermo & Levels
PWAT1.93 in
0–3 km LR4.0 °C/km
700–500 LR6.5 °C/km
Total Totals49.4
LCL965 hPa
LFC642 hPa
EL222 hPa
Freezing Lvl15,699 ft