Heat Advisory — Knox, NE, Cedar, NE, Antelope, NE, Pierce, NE, Douglas, NE, Sarpy, NE, Thurston, NE, Wayne, NE, Boone, NE, Madison, NE, Stanton, NE, Cuming, NE, Burt, NE, Platte, NE, Colfax, NE, Dodge, NE, Washington, NE, Butler, NE, Saunders, NE, Seward, NE, Lancaster, NE, Cass, NE, Otoe, NE, Saline, NE, Jefferson, NE, Gage, NE, Johnson, NE, Nemaha, NE, Pawnee, NE, Richardson, NE 10:00 PM

Jefferson County, Nebraska, United States

Last updated: 6:00 AM CDT  ·  Refresh
27°C
Feels like 27°
Clear
▲ 39°  /  ▼ 23°
Wind
9 mph S
Humidity
61%
Dew Point
20°
Pressure
28.26 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
3%
Sunrise
6:22 AM
Sunset
8:47 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently clear at 27°C. Precipitation is likely — peak probability 65% around 5 AM. Atmospheric instability is elevated (CAPE up to 2150 J/kg) — isolated convective development possible. Sunrise: 6:22AM · Sunset: 8:47PM.

Alerts

Heat Advisory
Knox, NE, Cedar, NE, Antelope, NE, Pierce, NE, Douglas, NE, Sarpy, NE, Thurston, NE, Wayne, NE, Boone, NE, Madison, NE, Stanton, NE, Cuming, NE, Burt, NE, Platte, NE, Colfax, NE, Dodge, NE, Washington, NE, Butler, NE, Saunders, NE, Seward, NE, Lancaster, NE, Cass, NE, Otoe, NE, Saline, NE, Jefferson, NE, Gage, NE, Johnson, NE, Nemaha, NE, Pawnee, NE, Richardson, NE
Expires 10:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
7 AM
24°
19%
8 AM
26°
20%
9 AM
28°
20%
10 AM
30°
20%
11 AM
32°
20%
12 PM
33°
20%
1 PM
35°
3%
2 PM
36°
4%
3 PM
37°
7%
4 PM
37°
7%
5 PM
37°
8%
6 PM
39°
8%
7 PM
38°
8%
8 PM
36°
21%
9 PM
33°
28%
10 PM
31°
38%
11 PM
31°
46%
12 AM
29°
47%
1 AM
28°
47%
2 AM
28°
56%
3 AM
28°
64%
4 AM
27°
58%
5 AM
26°
64%
7-Day Forecast
Today
39° 23°
Partly Cloudy with a 28% chance of rain.
Tue
34° 23°
Mostly Cloudy with a 47% chance of rain.
Wed
33° 20°
Partly Cloudy with a 21% chance of rain.
Thu
33° 22°
Mostly Cloudy with a 81% chance of rain.
Fri
34° 21°
Partly Cloudy with a 55% chance of rain.
Sat
34° 18°
Clear.
Sun
36° 19°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 3% 9 mph S 61%
7 AM 24° Clear 19% 10 mph S 58%
8 AM 26° Clear 20% 10 mph SSW 53%
9 AM 28° Partly Cloudy 20% 11 mph SW 46%
10 AM 30° Partly Cloudy 20% 11 mph SW 42%
11 AM 32° Partly Cloudy 20% 9 mph SW 38%
12 PM 33° Partly Cloudy 20% 8 mph SW 36%
1 PM 35° Partly Cloudy 3% 7 mph SW 32%
2 PM 36° Partly Cloudy 4% 6 mph SW 30%
3 PM 37° Partly Cloudy 7% 6 mph SW 29%
4 PM 37° Partly Cloudy 7% 6 mph SSW 27%
5 PM 37° Partly Cloudy 8% 5 mph SSW 27%
6 PM 39° Partly Cloudy 8% 5 mph S 27%
7 PM 38° Partly Cloudy 8% 5 mph SSE 28%
8 PM 36° Mostly Clear 21% 5 mph SSE 35%
9 PM 33° Partly Cloudy 28% 6 mph SE 41%
10 PM 31° Mostly Cloudy 38% 6 mph SE 46%
11 PM 31° Mostly Cloudy 46% 6 mph SE 49%
12 AM 29° Mostly Cloudy 47% 7 mph SE 51%
1 AM 28° Mostly Cloudy 47% 8 mph WSW 53%
2 AM 28° Mostly Cloudy 56% 6 mph ENE 56%
3 AM 28° Mostly Cloudy 64% 4 mph ENE 58%
4 AM 27° Heavy Rain 58% 4 mph ENE 61%
5 AM 26° Rain 64% 4 mph ENE 67%
15-Day Forecast
Today
7/27
Partly Cloudy
28%
23°
39°
Tue
7/28
Mostly Cloudy
47%
23°
34°
Wed
7/29
Partly Cloudy
21%
20°
33°
Thu
7/30
Mostly Cloudy
81%
22°
33°
Fri
7/31
Partly Cloudy
55%
21°
34°
Sat
8/1
Clear
15%
18°
34°
Sun
8/2
Clear
8%
19°
36°
Mon
8/3
Clear
34%
19°
37°
Tue
8/4
Mostly Cloudy
35%
20°
38°
Wed
8/5
Drizzle
47%
18°
32°
Thu
8/6
Drizzle
60%
22°
35°
Fri
8/7
Drizzle
60%
21°
34°
Sat
8/8
Clear
60%
22°
34°
Sun
8/9
Drizzle
60%
22°
36°
Mon
8/10
Drizzle
60%
21°
36°
55
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
55 AQI 11.2 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 36 55
Tue 55 Moderate 46 55
Wed 51 Moderate 45 51
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, 09:00'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
SBCAPE322 J/kg
MLCAPE451 J/kg
MUCAPE966 J/kg
SBCIN-876 J/kg
MLCIN0 J/kg
Lifted Index-2.1
Kinematics
0–6 km Shear20 kt
0–1 km Shear32 kt
Eff. Shear24 kt
0–1 km SRH162
0–3 km SRH207
Eff. SRH51
Storm Motion251° @ 27 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.6
K-Index34.7
Thermo & Levels
PWAT1.69 in
0–3 km LR4.2 °C/km
700–500 LR7.6 °C/km
Total Totals49.7
LCL872 hPa
LFC579 hPa
EL229 hPa
Freezing Lvl15,607 ft