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

Knox County, Nebraska, United States

Last updated: 4:34 AM CDT  ·  Refresh
27°C
Feels like 31°
Mostly Clear
▲ 39°  /  ▼ 24°
Wind
4 mph SSE
Humidity
80%
Dew Point
24°
Pressure
28.14 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
24%
Sunrise
6:18 AM
Sunset
8:57 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Knox County is currently mostly clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3123 J/kg) — isolated convective development possible. Sunrise: 6:18AM · Sunset: 8:57PM.

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
43 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
5 AM
24°
22%
6 AM
24°
24%
7 AM
25°
26%
8 AM
27°
22%
9 AM
28°
20%
10 AM
29°
21%
11 AM
31°
22%
12 PM
33°
16%
1 PM
35°
4%
2 PM
37°
7%
3 PM
38°
8%
4 PM
38°
16%
5 PM
38°
16%
6 PM
38°
16%
7 PM
36°
16%
8 PM
34°
17%
9 PM
32°
17%
10 PM
31°
14%
11 PM
29°
19%
12 AM
28°
19%
1 AM
29°
18%
2 AM
29°
18%
3 AM
28°
13%
7-Day Forecast
Today
39° 24°
Partly Cloudy with a 26% chance of rain.
Tue
37° 23°
Partly Cloudy.
Wed
36° 21°
Partly Cloudy with a 25% chance of rain.
Thu
34° 20°
Heavy Rain, 75% chance.
Fri
36° 19°
Partly Cloudy with a 30% chance of rain.
Sat
36° 19°
Mostly Clear.
Sun
38° 19°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 3% 4 mph SSE 80%
5 AM 24° Partly Cloudy 22% 3 mph SSE 77%
6 AM 24° Partly Cloudy 24% 4 mph NNE 80%
7 AM 25° Partly Cloudy 26% 5 mph N 79%
8 AM 27° Partly Cloudy 22% 7 mph NNE 75%
9 AM 28° Partly Cloudy 20% 9 mph NNE 69%
10 AM 29° Partly Cloudy 21% 10 mph NE 63%
11 AM 31° Mostly Clear 22% 11 mph NE 56%
12 PM 33° Mostly Clear 16% 11 mph NE 48%
1 PM 35° Partly Cloudy 4% 12 mph ENE 42%
2 PM 37° Partly Cloudy 7% 12 mph ENE 36%
3 PM 38° Mostly Clear 8% 12 mph ENE 30%
4 PM 38° Partly Cloudy 16% 11 mph ENE 27%
5 PM 38° Partly Cloudy 16% 10 mph E 27%
6 PM 38° Partly Cloudy 16% 9 mph E 27%
7 PM 36° Partly Cloudy 16% 8 mph E 29%
8 PM 34° Partly Cloudy 17% 7 mph E 33%
9 PM 32° Partly Cloudy 17% 7 mph E 38%
10 PM 31° Mostly Cloudy 14% 6 mph E 41%
11 PM 29° Mostly Cloudy 19% 6 mph E 46%
12 AM 28° Mostly Cloudy 19% 6 mph ENE 50%
1 AM 29° Mostly Cloudy 18% 6 mph NE 51%
2 AM 29° Mostly Cloudy 18% 5 mph ENE 50%
3 AM 28° Mostly Cloudy 13% 5 mph ENE 49%
15-Day Forecast
Today
7/27
Partly Cloudy
26%
24°
39°
Tue
7/28
Partly Cloudy
13%
23°
37°
Wed
7/29
Partly Cloudy
25%
21°
36°
Thu
7/30
Heavy Rain
75%
20°
34°
Fri
7/31
Partly Cloudy
30%
19°
36°
Sat
8/1
Mostly Clear
14%
19°
36°
Sun
8/2
Clear
15%
19°
38°
Mon
8/3
Clear
15%
23°
40°
Tue
8/4
Rain
54%
17°
36°
Wed
8/5
Mostly Clear
35%
14°
32°
Thu
8/6
Drizzle
60%
19°
33°
Fri
8/7
Drizzle
60%
18°
34°
Sat
8/8
Drizzle
60%
19°
34°
Sun
8/9
Drizzle
60%
19°
35°
Mon
8/10
Drizzle
60%
20°
35°
43
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
39 AQI 7.1 µg/m³
O3
Ground-level ozone
Dominant
43 AQI 47 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 43 Good 43 39
Tue 49 Good 47 49
Wed 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 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
SBCAPE2452 J/kg
MLCAPE3724 J/kg
MUCAPE4455 J/kg
SBCIN-545 J/kg
MLCIN0 J/kg
Lifted Index-5.4
Kinematics
0–6 km Shear23 kt
0–1 km Shear14 kt
Eff. Shear22 kt
0–1 km SRH4
0–3 km SRH-20
Eff. SRH-37
Storm Motion264° @ 23 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index20.9
Thermo & Levels
PWAT1.61 in
0–3 km LR3.7 °C/km
700–500 LR7.7 °C/km
Total Totals54.0
LCL912 hPa
LFC620 hPa
EL158 hPa
Freezing Lvl16,119 ft