Extreme Heat Warning — Montague, TX, Cooke, TX, Grayson, TX, Fannin, TX, Lamar, TX, Young, TX, Jack, TX, Wise, TX, Denton, TX, Collin, TX, Hunt, TX, Delta, TX, Hopkins, TX, Stephens, TX, Palo Pinto, TX, Parker, TX, Tarrant, TX, Dallas, TX, Rockwall, TX, Kaufman, TX, Van Zandt, TX, Rains, TX, Eastland, TX, Erath, TX, Hood, TX, Somervell, TX, Johnson, TX, Ellis, TX, Henderson, TX, Comanche, TX, Mills, TX, Hamilton, TX, Bosque, TX, Hill, TX, Navarro, TX, Freestone, TX, Anderson, TX, Lampasas, TX, Coryell, TX, Bell, TX, McLennan, TX, Falls, TX, Limestone, TX, Leon, TX, Milam, TX, Robertson, TX 9:00 PM

Johnson County, Texas, United States

Last updated: 8:32 PM CDT  ·  Refresh
100°F
Feels like 99°
Mostly Clear
▲ 106°  /  ▼ 80°
Wind
9 mph S
Humidity
25%
Dew Point
58°
Pressure
29.02 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
16%
Sunrise
6:58 AM
Sunset
8:04 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johnson County is currently mostly clear at 100°F. Dry conditions are expected through the next 24 hours. Sunrise: 6:58AM · Sunset: 8:04PM.

Alerts

Extreme Heat Warning
Montague, TX, Cooke, TX, Grayson, TX, Fannin, TX, Lamar, TX, Young, TX, Jack, TX, Wise, TX, Denton, TX, Collin, TX, Hunt, TX, Delta, TX, Hopkins, TX, Stephens, TX, Palo Pinto, TX, Parker, TX, Tarrant, TX, Dallas, TX, Rockwall, TX, Kaufman, TX, Van Zandt, TX, Rains, TX, Eastland, TX, Erath, TX, Hood, TX, Somervell, TX, Johnson, TX, Ellis, TX, Henderson, TX, Comanche, TX, Mills, TX, Hamilton, TX, Bosque, TX, Hill, TX, Navarro, TX, Freestone, TX, Anderson, TX, Lampasas, TX, Coryell, TX, Bell, TX, McLennan, TX, Falls, TX, Limestone, TX, Leon, TX, Milam, TX, Robertson, TX
Expires 9:00 PM
57 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
100°
11%
9 PM
95°
3%
10 PM
93°
3%
11 PM
92°
3%
12 AM
90°
3%
1 AM
90°
3%
2 AM
88°
3%
3 AM
87°
3%
4 AM
86°
4%
5 AM
81°
4%
6 AM
80°
4%
7 AM
81°
4%
8 AM
85°
5%
9 AM
88°
5%
10 AM
92°
5%
11 AM
96°
5%
12 PM
99°
5%
1 PM
104°
5%
2 PM
104°
5%
3 PM
107°
5%
4 PM
107°
5%
5 PM
106°
5%
6 PM
106°
5%
7 PM
104°
5%
7-Day Forecast
Tonight
106° 80°
Mostly Clear.
Mon
109° 80°
Mostly Clear.
Tue
106° 78°
Partly Cloudy.
Wed
104° 77°
Partly Cloudy with a 28% chance of rain.
Thu
103° 78°
Partly Cloudy with a 34% chance of rain.
Fri
104° 75°
Mostly Clear with a 21% chance of rain.
Sat
103° 77°
Clear with a 21% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 100° Mostly Clear 11% 9 mph S 25%
9 PM 95° Partly Cloudy 3% 11 mph SSE 28%
10 PM 93° Mostly Clear 3% 12 mph S 31%
11 PM 92° Mostly Clear 3% 12 mph S 33%
12 AM 90° Clear 3% 12 mph S 35%
1 AM 90° Clear 3% 12 mph S 37%
2 AM 88° Mostly Clear 3% 12 mph SSW 39%
3 AM 87° Mostly Clear 3% 13 mph SSW 41%
4 AM 86° Mostly Clear 4% 12 mph SSW 42%
5 AM 81° Mostly Clear 4% 12 mph SSW 44%
6 AM 80° Clear 4% 11 mph SSW 45%
7 AM 81° Mostly Clear 4% 12 mph SW 43%
8 AM 85° Mostly Clear 5% 13 mph SW 38%
9 AM 88° Mostly Clear 5% 14 mph SW 33%
10 AM 92° Mostly Clear 5% 14 mph SW 29%
11 AM 96° Clear 5% 14 mph SW 26%
12 PM 99° Clear 5% 13 mph SW 23%
1 PM 104° Mostly Clear 5% 12 mph SW 21%
2 PM 104° Mostly Clear 5% 12 mph SSW 20%
3 PM 107° Mostly Clear 5% 12 mph SSW 19%
4 PM 107° Mostly Clear 5% 12 mph SSW 18%
5 PM 106° Mostly Clear 5% 13 mph SSW 19%
6 PM 106° Mostly Clear 5% 14 mph S 19%
7 PM 104° Mostly Clear 5% 14 mph S 20%
15-Day Forecast
Today
8/23
Mostly Clear
11%
80°
106°
Mon
8/24
Mostly Clear
5%
80°
109°
Tue
8/25
Partly Cloudy
6%
78°
106°
Wed
8/26
Partly Cloudy
28%
77°
104°
Thu
8/27
Partly Cloudy
34%
78°
103°
Fri
8/28
Mostly Clear
21%
75°
104°
Sat
8/29
Clear
21%
77°
103°
Sun
8/30
Clear
10%
77°
103°
Mon
8/31
Clear
3%
77°
103°
Tue
9/1
Mostly Clear
15%
76°
103°
Wed
9/2
Clear
25%
77°
105°
Thu
9/3
Clear
60%
79°
105°
Fri
9/4
Drizzle
60%
78°
99°
Sat
9/5
Drizzle
60%
77°
99°
Sun
9/6
Drizzle
60%
77°
97°
57
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
57 AQI 12.5 µg/m³
O3
Ground-level ozone
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 57 Moderate 37 57
Tue 57 Moderate 41 57
Wed 53 Moderate 43 53
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 Sun Aug 23, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE86 J/kg
MLCAPE37 J/kg
MUCAPE86 J/kg
SBCIN-282 J/kg
MLCIN-137 J/kg
Lifted Index0.5
Kinematics
0–6 km Shear19 kt
0–1 km Shear2 kt
Eff. Shear—
0–1 km SRH3
0–3 km SRH40
Eff. SRH—
Storm Motion71° @ 14 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index36.6
Thermo & Levels
PWAT1.34 in
0–3 km LR8.7 °C/km
700–500 LR5.8 °C/km
Total Totals46.0
LCL704 hPa
LFC457 hPa
EL249 hPa
Freezing Lvl15,810 ft