Excessive Heat Warning — Boone, NE, Burt, NE, Platte, NE, Colfax, NE, Dodge, NE, Washington, NE, Harrison, IA, Shelby, IA, Douglas, NE, Sarpy, NE, Knox, NE, Cedar, NE, Antelope, NE, Pierce, NE, Thurston, NE, Wayne, NE, Madison, NE, Stanton, NE, Cuming, 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 7:00 AM Heat Advisory — Knox, NE, Cedar, NE, Antelope, NE, Pierce, NE, Thurston, NE, Wayne, NE, Madison, NE, Stanton, NE, Cuming, NE, Boone, NE, Burt, NE, Platte, NE, Colfax, NE, Dodge, NE, Washington, NE, Harrison, IA, Shelby, IA, Douglas, NE, Sarpy, 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 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

Lancaster County, Nebraska, United States

Last updated: 5:54 AM CDT  ·  Refresh
28°C
Feels like 29°
Mostly Clear
▲ 40°  /  ▼ 24°
Wind
8 mph S
Humidity
64%
Dew Point
21°
Pressure
28.45 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
25%
Sunrise
6:18 AM
Sunset
8:47 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lancaster County is currently mostly clear at 28°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2545 J/kg) — isolated convective development possible. Sunrise: 6:18AM · Sunset: 8:47PM.

Alerts

Excessive Heat Warning
Boone, NE, Burt, NE, Platte, NE, Colfax, NE, Dodge, NE, Washington, NE, Harrison, IA, Shelby, IA, Douglas, NE, Sarpy, NE, Knox, NE, Cedar, NE, Antelope, NE, Pierce, NE, Thurston, NE, Wayne, NE, Madison, NE, Stanton, NE, Cuming, 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 7:00 AM
Heat Advisory
Knox, NE, Cedar, NE, Antelope, NE, Pierce, NE, Thurston, NE, Wayne, NE, Madison, NE, Stanton, NE, Cuming, NE, Boone, NE, Burt, NE, Platte, NE, Colfax, NE, Dodge, NE, Washington, NE, Harrison, IA, Shelby, IA, Douglas, NE, Sarpy, 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
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
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
7%
6 AM
26°
23%
7 AM
27°
23%
8 AM
29°
23%
9 AM
31°
21%
10 AM
33°
23%
11 AM
35°
23%
12 PM
37°
16%
1 PM
38°
7%
2 PM
38°
7%
3 PM
39°
7%
4 PM
39°
8%
5 PM
39°
8%
6 PM
39°
8%
7 PM
37°
8%
8 PM
34°
8%
9 PM
33°
8%
10 PM
33°
20%
11 PM
32°
25%
12 AM
30°
25%
1 AM
30°
30%
2 AM
29°
32%
3 AM
29°
32%
4 AM
28°
23%
7-Day Forecast
Today
40° 24°
Mostly Clear with a 25% chance of rain.
Tue
36° 23°
Mostly Cloudy with a 25% chance of rain.
Wed
36° 22°
Partly Cloudy with a 45% chance of rain.
Thu
33° 21°
Mostly Cloudy with a 81% chance of rain.
Fri
35° 19°
Mostly Clear with a 55% chance of rain.
Sat
36° 19°
Clear.
Sun
37° 19°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Mostly Clear 7% 8 mph S 64%
6 AM 26° Clear 23% 6 mph S 62%
7 AM 27° Clear 23% 8 mph SSW 56%
8 AM 29° Mostly Clear 23% 9 mph SW 49%
9 AM 31° Clear 21% 8 mph SW 42%
10 AM 33° Mostly Clear 23% 6 mph WSW 39%
11 AM 35° Clear 23% 4 mph WSW 37%
12 PM 37° Partly Cloudy 16% 3 mph WNW 34%
1 PM 38° Partly Cloudy 7% 4 mph NE 33%
2 PM 38° Mostly Clear 7% 5 mph E 32%
3 PM 39° Partly Cloudy 7% 6 mph E 31%
4 PM 39° Partly Cloudy 8% 7 mph E 31%
5 PM 39° Partly Cloudy 8% 7 mph E 31%
6 PM 39° Partly Cloudy 8% 8 mph E 32%
7 PM 37° Partly Cloudy 8% 7 mph E 39%
8 PM 34° Partly Cloudy 8% 7 mph E 45%
9 PM 33° Partly Cloudy 8% 8 mph ENE 52%
10 PM 33° Mostly Cloudy 20% 7 mph E 55%
11 PM 32° Mostly Cloudy 25% 7 mph E 58%
12 AM 30° Mostly Cloudy 25% 8 mph E 60%
1 AM 30° Mostly Cloudy 30% 7 mph E 63%
2 AM 29° Rain 32% 6 mph E 67%
3 AM 29° Rain 32% 6 mph ENE 70%
4 AM 28° Rain 23% 6 mph ENE 73%
15-Day Forecast
Today
7/27
Mostly Clear
25%
24°
40°
Tue
7/28
Mostly Cloudy
25%
23°
36°
Wed
7/29
Partly Cloudy
45%
22°
36°
Thu
7/30
Mostly Cloudy
81%
21°
33°
Fri
7/31
Mostly Clear
55%
19°
35°
Sat
8/1
Clear
15%
19°
36°
Sun
8/2
Clear
8%
19°
37°
Mon
8/3
Clear
34%
21°
38°
Tue
8/4
Drizzle
59%
21°
39°
Wed
8/5
Rain
57%
18°
33°
Thu
8/6
Drizzle
60%
21°
36°
Fri
8/7
Drizzle
60%
21°
34°
Sat
8/8
Drizzle
60%
21°
34°
Sun
8/9
Rain
90%
21°
36°
Mon
8/10
Drizzle
60%
21°
36°
52
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
52 AQI 10.0 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 34 52
Tue 54 Moderate 40 54
Wed 49 Good 49 49
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 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE662 J/kg
MLCAPE689 J/kg
MUCAPE1254 J/kg
SBCIN-779 J/kg
MLCIN0 J/kg
Lifted Index-2.4
Kinematics
0–6 km Shear21 kt
0–1 km Shear31 kt
Eff. Shear29 kt
0–1 km SRH150
0–3 km SRH207
Eff. SRH33
Storm Motion251° @ 27 kt
0–1 km EHI0.6
Composite Parameters
Sig. Tornado0.3
STP (eff)0.0
Supercell0.6
K-Index37.3
Thermo & Levels
PWAT1.79 in
0–3 km LR4.5 °C/km
700–500 LR7.2 °C/km
Total Totals50.1
LCL875 hPa
LFC604 hPa
EL212 hPa
Freezing Lvl15,850 ft