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

Collin County, Texas, United States

Last updated: 8:32 PM CDT  ·  Refresh
38°C
Feels like 38°
Mostly Clear
▲ 42°  /  ▼ 27°
Wind
9 mph SSE
Humidity
28%
Dew Point
16°
Pressure
29,23 inHg
Visibility
10 mi
UV Index
0,0
Cloud Cover
13%
Sunrise
6:54 AM
Sunset
8:02 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Collin County is currently mostly clear at 38°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:54AM · Sunset: 8:02PM.

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
84 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
38°
11%
9 PM
36°
7%
10 PM
34°
9%
11 PM
34°
9%
12 AM
33°
4%
1 AM
33°
4%
2 AM
32°
4%
3 AM
32°
4%
4 AM
32°
4%
5 AM
28°
4%
6 AM
28°
7%
7 AM
29°
8%
8 AM
30°
8%
9 AM
30°
8%
10 AM
32°
16%
11 AM
33°
16%
12 PM
34°
17%
1 PM
37°
17%
2 PM
38°
17%
3 PM
40°
17%
4 PM
40°
8%
5 PM
41°
9%
6 PM
40°
9%
7 PM
39°
9%
7-Day Forecast
Tonight
42° 27°
Mostly Clear.
Mon
41° 28°
Partly Cloudy.
Tue
41° 27°
Partly Cloudy with a 36% chance of rain.
Wed
37° 27°
Partly Cloudy with a 28% chance of rain.
Thu
37° 24°
Partly Cloudy with a 21% chance of rain.
Fri
38° 24°
Clear.
Sat
37° 25°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 38° Mostly Clear 11% 9 mph SSE 28%
9 PM 36° Partly Cloudy 7% 10 mph SSE 31%
10 PM 34° Partly Cloudy 9% 10 mph S 33%
11 PM 34° Mostly Clear 9% 10 mph S 34%
12 AM 33° Mostly Clear 4% 10 mph S 35%
1 AM 33° Mostly Clear 4% 10 mph S 36%
2 AM 32° Mostly Clear 4% 10 mph SSW 38%
3 AM 32° Partly Cloudy 4% 10 mph SSW 40%
4 AM 32° Partly Cloudy 4% 9 mph SSW 41%
5 AM 28° Partly Cloudy 4% 9 mph SSW 42%
6 AM 28° Partly Cloudy 7% 8 mph SSW 43%
7 AM 29° Partly Cloudy 8% 9 mph SSW 42%
8 AM 30° Partly Cloudy 8% 11 mph SW 38%
9 AM 30° Partly Cloudy 8% 12 mph SW 35%
10 AM 32° Partly Cloudy 16% 12 mph SW 32%
11 AM 33° Partly Cloudy 16% 12 mph SW 30%
12 PM 34° Partly Cloudy 17% 12 mph SW 27%
1 PM 37° Partly Cloudy 17% 12 mph SW 25%
2 PM 38° Partly Cloudy 17% 12 mph SSW 23%
3 PM 40° Partly Cloudy 17% 13 mph SSW 21%
4 PM 40° Partly Cloudy 8% 13 mph SSW 21%
5 PM 41° Partly Cloudy 9% 12 mph SSW 21%
6 PM 40° Mostly Clear 9% 12 mph SSW 22%
7 PM 39° Mostly Clear 9% 12 mph SSW 23%
15-Day Forecast
Today
8/23
Mostly Clear
11%
27°
42°
Mon
8/24
Partly Cloudy
17%
28°
41°
Tue
8/25
Partly Cloudy
36%
27°
41°
Wed
8/26
Partly Cloudy
28%
27°
37°
Thu
8/27
Partly Cloudy
21%
24°
37°
Fri
8/28
Clear
17%
24°
38°
Sat
8/29
Clear
17%
25°
37°
Sun
8/30
Clear
8%
26°
37°
Mon
8/31
Clear
15%
26°
38°
Tue
9/1
Clear
15%
26°
38°
Wed
9/2
Clear
25%
26°
41°
Thu
9/3
Drizzle
60%
27°
41°
Fri
9/4
Drizzle
60%
26°
36°
Sat
9/5
Drizzle
60%
26°
35°
Sun
9/6
Drizzle
60%
26°
35°
84
Moderate
U.S. Air Quality Index · Dominant: O3
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
57 AQI 12.5 µg/m³
O3
Ground-level ozone
Dominant
84 AQI 65 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 84 Moderate 84 57
Tue 67 Moderate 67 58
Wed 61 Moderate 61 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 dim. août 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
SBCAPE533 J/kg
MLCAPE201 J/kg
MUCAPE533 J/kg
SBCIN-264 J/kg
MLCIN-139 J/kg
Lifted Index-0.8
Kinematics
0–6 km Shear27 kt
0–1 km Shear6 kt
Eff. Shear30 kt
0–1 km SRH23
0–3 km SRH70
Eff. SRH73
Storm Motion45° @ 14 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.6
K-Index34.5
Thermo & Levels
PWAT1.53 in
0–3 km LR8.3 °C/km
700–500 LR6.1 °C/km
Total Totals46.4
LCL728 hPa
LFC643 hPa
EL193 hPa
Freezing Lvl16,362 ft