Extreme Heat Warning — Pottawattamie, IA, Mills, IA, Montgomery, IA, Fremont, IA, Page, IA, Douglas, NE, Sarpy, NE 10:00 PM 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: 4:35 AM CDT  ·  Refresh
27°C
Feels like 28°
Clear
▲ 39°  /  ▼ 24°
Wind
9 mph S
Humidity
61%
Dew Point
20°
Pressure
28.27 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
9%
Sunrise
6:22 AM
Sunset
8:47 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently clear at 27°C. Precipitation is likely — peak probability 68% around 3 AM. Atmospheric instability is elevated (CAPE up to 2078 J/kg) — isolated convective development possible. Sunrise: 6:22AM · Sunset: 8:47PM.

Alerts

Extreme Heat Warning
Pottawattamie, IA, Mills, IA, Montgomery, IA, Fremont, IA, Page, IA, Douglas, NE, Sarpy, NE
Expires 10:00 PM
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°
4%
5 AM
25°
21%
6 AM
24°
20%
7 AM
26°
20%
8 AM
27°
20%
9 AM
29°
20%
10 AM
31°
20%
11 AM
33°
20%
12 PM
34°
14%
1 PM
36°
4%
2 PM
37°
7%
3 PM
37°
8%
4 PM
37°
8%
5 PM
39°
8%
6 PM
38°
8%
7 PM
37°
21%
8 PM
34°
29%
9 PM
32°
29%
10 PM
31°
47%
11 PM
29°
47%
12 AM
28°
48%
1 AM
29°
57%
2 AM
28°
61%
3 AM
28°
68%
7-Day Forecast
Today
39° 24°
Partly Cloudy with a 47% chance of rain.
Tue
34° 23°
Mostly Cloudy with a 64% chance of rain.
Wed
33° 21°
Partly Cloudy with a 45% chance of rain.
Thu
34° 22°
Mostly Cloudy with a 75% chance of rain.
Fri
34° 20°
Partly Cloudy with a 55% chance of rain.
Sat
34° 19°
Clear.
Sun
35° 19°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 4% 9 mph S 61%
5 AM 25° Clear 21% 9 mph S 58%
6 AM 24° Clear 20% 10 mph S 59%
7 AM 26° Clear 20% 10 mph SSW 56%
8 AM 27° Mostly Clear 20% 10 mph SSW 50%
9 AM 29° Mostly Clear 20% 11 mph SW 44%
10 AM 31° Partly Cloudy 20% 10 mph SW 40%
11 AM 33° Partly Cloudy 20% 8 mph SW 37%
12 PM 34° Partly Cloudy 14% 7 mph SW 34%
1 PM 36° Partly Cloudy 4% 6 mph SW 31%
2 PM 37° Mostly Clear 7% 6 mph SW 29%
3 PM 37° Partly Cloudy 8% 6 mph SSW 28%
4 PM 37° Partly Cloudy 8% 5 mph SSW 27%
5 PM 39° Partly Cloudy 8% 5 mph SSW 27%
6 PM 38° Partly Cloudy 8% 5 mph S 28%
7 PM 37° Partly Cloudy 21% 5 mph SSE 32%
8 PM 34° Partly Cloudy 29% 5 mph SSE 38%
9 PM 32° Mostly Cloudy 29% 6 mph SE 44%
10 PM 31° Mostly Cloudy 47% 5 mph SE 48%
11 PM 29° Mostly Cloudy 47% 6 mph SSE 50%
12 AM 28° Mostly Cloudy 48% 7 mph S 52%
1 AM 29° Mostly Cloudy 57% 6 mph S 55%
2 AM 28° Mostly Cloudy 61% 5 mph E 57%
3 AM 28° Heavy Rain 68% 4 mph ENE 60%
15-Day Forecast
Today
7/27
Partly Cloudy
47%
24°
39°
Tue
7/28
Mostly Cloudy
64%
23°
34°
Wed
7/29
Partly Cloudy
45%
21°
33°
Thu
7/30
Mostly Cloudy
75%
22°
34°
Fri
7/31
Partly Cloudy
55%
20°
34°
Sat
8/1
Clear
15%
19°
34°
Sun
8/2
Clear
8%
19°
35°
Mon
8/3
Clear
34%
20°
37°
Tue
8/4
Drizzle
35%
21°
38°
Wed
8/5
Drizzle
44%
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, 08:00'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
SBCAPE575 J/kg
MLCAPE586 J/kg
MUCAPE1225 J/kg
SBCIN-831 J/kg
MLCIN0 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear20 kt
0–1 km Shear31 kt
Eff. Shear29 kt
0–1 km SRH231
0–3 km SRH283
Eff. SRH60
Storm Motion260° @ 26 kt
0–1 km EHI0.8
Composite Parameters
Sig. Tornado0.3
STP (eff)0.0
Supercell1.1
K-Index33.8
Thermo & Levels
PWAT1.75 in
0–3 km LR4.3 °C/km
700–500 LR8.0 °C/km
Total Totals51.4
LCL867 hPa
LFC586 hPa
EL211 hPa
Freezing Lvl15,499 ft