Heat Advisory — Republic, KS, Washington, KS, Marshall, KS, Cloud, KS, Clay, KS, Ottawa, KS, Dickinson, KS, Nemaha, KS, Brown, KS, Riley, KS, Pottawatomie, KS, Jackson, KS, Jefferson, KS, Geary, KS, Morris, KS, Wabaunsee, KS, Lyon, KS, Shawnee, KS, Douglas, KS, Osage, KS, Franklin, KS, Coffey, KS, Anderson, KS 7:00 PM Excessive Heat Warning — Shawnee, KS, Douglas, KS, Lyon, KS, Osage, KS, Franklin, KS, Coffey, KS, Anderson, KS, Republic, KS, Washington, KS, Marshall, KS, Nemaha, KS, Brown, KS, Cloud, KS, Clay, KS, Riley, KS, Pottawatomie, KS, Jackson, KS, Jefferson, KS, Ottawa, KS, Dickinson, KS, Geary, KS, Morris, KS, Wabaunsee, KS 9:00 PM Extreme Heat Watch 7:00 PM

Lyon County, Kansas, United States

Last updated: 1:49 AM CDT  ·  Refresh
28°C
Feels like 31°
Clear
▲ 39°  /  ▼ 25°
Wind
10 mph S
Humidity
62%
Dew Point
21°
Pressure
28.63 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
9%
Sunrise
6:22 AM
Sunset
8:39 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lyon County is currently clear at 28°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1049 J/kg) — isolated convective development possible. Sunrise: 6:22AM · Sunset: 8:39PM.

Alerts

Heat Advisory
Republic, KS, Washington, KS, Marshall, KS, Cloud, KS, Clay, KS, Ottawa, KS, Dickinson, KS, Nemaha, KS, Brown, KS, Riley, KS, Pottawatomie, KS, Jackson, KS, Jefferson, KS, Geary, KS, Morris, KS, Wabaunsee, KS, Lyon, KS, Shawnee, KS, Douglas, KS, Osage, KS, Franklin, KS, Coffey, KS, Anderson, KS
Expires 7:00 PM
Excessive Heat Warning
Shawnee, KS, Douglas, KS, Lyon, KS, Osage, KS, Franklin, KS, Coffey, KS, Anderson, KS, Republic, KS, Washington, KS, Marshall, KS, Nemaha, KS, Brown, KS, Cloud, KS, Clay, KS, Riley, KS, Pottawatomie, KS, Jackson, KS, Jefferson, KS, Ottawa, KS, Dickinson, KS, Geary, KS, Morris, KS, Wabaunsee, KS
Expires 9:00 PM
Extreme Heat Watch
Expires 7:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
13%
2 AM
28°
10%
3 AM
27°
4%
4 AM
27°
4%
5 AM
24°
4%
6 AM
24°
3%
7 AM
26°
3%
8 AM
28°
3%
9 AM
29°
3%
10 AM
32°
3%
11 AM
34°
3%
12 PM
36°
3%
1 PM
38°
3%
2 PM
39°
5%
3 PM
39°
5%
4 PM
38°
5%
5 PM
39°
5%
6 PM
38°
5%
7 PM
37°
5%
8 PM
34°
9%
9 PM
32°
9%
10 PM
31°
9%
11 PM
31°
9%
12 AM
30°
9%
7-Day Forecast
Today
39° 25°
Mostly Clear.
Tue
36° 25°
Overcast.
Wed
34° 23°
Partly Cloudy with a 35% chance of rain.
Thu
36° 23°
Rain, 64% chance.
Fri
35° 21°
Clear with a 82% chance of rain.
Sat
33° 19°
Clear.
Sun
34° 19°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Clear 13% 10 mph S 62%
2 AM 28° Mostly Clear 10% 10 mph S 61%
3 AM 27° Partly Cloudy 4% 9 mph S 63%
4 AM 27° Partly Cloudy 4% 8 mph S 65%
5 AM 24° Mostly Clear 4% 8 mph S 66%
6 AM 24° Mostly Clear 3% 8 mph S 68%
7 AM 26° Partly Cloudy 3% 10 mph SSW 63%
8 AM 28° Partly Cloudy 3% 11 mph SSW 57%
9 AM 29° Partly Cloudy 3% 12 mph SW 51%
10 AM 32° Mostly Clear 3% 13 mph SW 45%
11 AM 34° Mostly Clear 3% 13 mph SSW 39%
12 PM 36° Clear 3% 14 mph SSW 34%
1 PM 38° Clear 3% 15 mph SSW 32%
2 PM 39° Mostly Clear 5% 15 mph SSW 30%
3 PM 39° Mostly Clear 5% 15 mph SSW 29%
4 PM 38° Partly Cloudy 5% 14 mph SSW 31%
5 PM 39° Partly Cloudy 5% 13 mph SSW 35%
6 PM 38° Partly Cloudy 5% 12 mph S 38%
7 PM 37° Partly Cloudy 5% 11 mph S 43%
8 PM 34° Partly Cloudy 9% 10 mph S 48%
9 PM 32° Partly Cloudy 9% 10 mph S 51%
10 PM 31° Partly Cloudy 9% 10 mph S 54%
11 PM 31° Partly Cloudy 9% 9 mph S 56%
12 AM 30° Partly Cloudy 9% 8 mph S 58%
15-Day Forecast
Today
7/27
Mostly Clear
13%
25°
39°
Tue
7/28
Overcast
16%
25°
36°
Wed
7/29
Partly Cloudy
35%
23°
34°
Thu
7/30
Rain
64%
23°
36°
Fri
7/31
Clear
82%
21°
35°
Sat
8/1
Clear
8%
19°
33°
Sun
8/2
Clear
3%
19°
34°
Mon
8/3
Clear
18%
21°
37°
Tue
8/4
Clear
44%
21°
39°
Wed
8/5
Drizzle
51%
22°
35°
Thu
8/6
Drizzle
60%
21°
34°
Fri
8/7
Clear
60%
22°
36°
Sat
8/8
Drizzle
60%
23°
37°
Sun
8/9
Drizzle
60%
23°
38°
Mon
8/10
Clear
60%
23°
38°
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 11.6 µg/m³
O3
Ground-level ozone
32 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 32 55
Tue 49 Good 39 49
Wed 36 Good 35 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, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE820 J/kg
MLCAPE821 J/kg
MUCAPE1059 J/kg
SBCIN-587 J/kg
MLCIN0 J/kg
Lifted Index-2.2
Kinematics
0–6 km Shear25 kt
0–1 km Shear18 kt
Eff. Shear18 kt
0–1 km SRH135
0–3 km SRH51
Eff. SRH-34
Storm Motion267° @ 17 kt
0–1 km EHI0.7
Composite Parameters
Sig. Tornado0.4
STP (eff)0.0
Supercell0.0
K-Index36.4
Thermo & Levels
PWAT1.82 in
0–3 km LR5.1 °C/km
700–500 LR6.2 °C/km
Total Totals47.1
LCL875 hPa
LFC571 hPa
EL203 hPa
Freezing Lvl16,719 ft