Johnson County, Nebraska, United States

Last updated: 10:53 AM CDT  ·  Refresh
23°C
Feels like 24°
Partly Cloudy
▲ 30°  /  ▼ 17°
Wind
3 mph SE
Humidity
74%
Dew Point
19°
Pressure
28.79 inHg
Visibility
2 mi
UV Index
7.4
Cloud Cover
47%
Sunrise
6:41 AM
Sunset
8:15 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johnson County is currently partly cloudy at 23°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1014 J/kg) — isolated convective development possible. Sunrise: 6:41AM · Sunset: 8:15PM.

Alerts

No active alerts for this location.
37 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
3%
11 AM
24°
14%
12 PM
26°
7%
1 PM
27°
4%
2 PM
27°
4%
3 PM
28°
4%
4 PM
27°
7%
5 PM
30°
7%
6 PM
29°
8%
7 PM
27°
8%
8 PM
24°
8%
9 PM
23°
8%
10 PM
22°
17%
11 PM
21°
14%
12 AM
21°
14%
1 AM
21°
14%
2 AM
21°
18%
3 AM
21°
18%
4 AM
20°
9%
5 AM
17°
9%
6 AM
17°
9%
7 AM
18°
15%
8 AM
19°
26%
9 AM
21°
26%
7-Day Forecast
Today
30° 17°
Mostly Clear.
Fri
33° 17°
Partly Cloudy with a 52% chance of rain.
Sat
29° 17°
Mostly Cloudy with a 31% chance of rain.
Sun
29° 16°
Rain, 45% chance.
Mon
36° 14°
Clear with a 50% chance of rain.
Tue
36° 19°
Rain, 64% chance.
Wed
34° 17°
Clear with a 43% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 23° Partly Cloudy 3% 3 mph SE 74%
11 AM 24° Mostly Clear 14% 5 mph SE 59%
12 PM 26° Clear 7% 6 mph SSE 50%
1 PM 27° Clear 4% 5 mph SSE 46%
2 PM 27° Clear 4% 4 mph SSE 44%
3 PM 28° Clear 4% 4 mph S 42%
4 PM 27° Clear 7% 4 mph S 44%
5 PM 30° Clear 7% 4 mph SSE 45%
6 PM 29° Clear 8% 5 mph ESE 48%
7 PM 27° Mostly Clear 8% 5 mph ESE 55%
8 PM 24° Mostly Clear 8% 5 mph SE 60%
9 PM 23° Mostly Cloudy 8% 6 mph SE 66%
10 PM 22° Partly Cloudy 17% 4 mph SE 68%
11 PM 21° Mostly Clear 14% 3 mph SSE 69%
12 AM 21° Clear 14% 5 mph S 71%
1 AM 21° Clear 14% 4 mph SSW 72%
2 AM 21° Clear 18% 4 mph S 73%
3 AM 21° Clear 18% 4 mph S 74%
4 AM 20° Clear 9% 4 mph SSW 77%
5 AM 17° Mostly Clear 9% 4 mph SSW 81%
6 AM 17° Mostly Clear 9% 5 mph SW 84%
7 AM 18° Partly Cloudy 15% 5 mph SW 81%
8 AM 19° Partly Cloudy 26% 5 mph SW 78%
9 AM 21° Drizzle 26% 5 mph SW 75%
15-Day Forecast
Today
8/20
Mostly Clear
17%
17°
30°
Fri
8/21
Partly Cloudy
52%
17°
33°
Sat
8/22
Mostly Cloudy
31%
17°
29°
Sun
8/23
Rain
45%
16°
29°
Mon
8/24
Clear
50%
14°
36°
Tue
8/25
Rain
64%
19°
36°
Wed
8/26
Clear
43%
17°
34°
Thu
8/27
Drizzle
68%
17°
35°
Fri
8/28
Drizzle
44%
18°
37°
Sat
8/29
Rain
64%
22°
39°
Sun
8/30
Drizzle
60%
22°
38°
Mon
8/31
Drizzle
60%
21°
37°
Tue
9/1
Drizzle
60%
22°
36°
Wed
9/2
Drizzle
60%
21°
36°
Thu
9/3
Drizzle
60%
21°
36°
37
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
13 AQI 2.4 µg/m³
O3
Ground-level ozone
Dominant
37 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Fri 37 Good 37 13
Sat 39 Good 39 12
Sun 40 Good 40 16
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 Aug 20, 14:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE124 J/kg
MLCAPE32 J/kg
MUCAPE124 J/kg
SBCIN-203 J/kg
MLCIN0 J/kg
Lifted Index-0.4
Kinematics
0–6 km Shear32 kt
0–1 km Shear9 kt
Eff. Shear34 kt
0–1 km SRH-33
0–3 km SRH56
Eff. SRH56
Storm Motion359° @ 28 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.1
K-Index5.8
Thermo & Levels
PWAT0.88 in
0–3 km LR5.0 °C/km
700–500 LR6.0 °C/km
Total Totals33.9
LCL920 hPa
LFC647 hPa
EL308 hPa
Freezing Lvl13,665 ft