McKinney, Texas

Last updated: 4:06 PM CDT  ·  Refresh
38°C
Feels like 38°
Mostly Clear
▲ 39°  /  ▼ 23°
Wind
7 mph E
Humidity
24%
Dew Point
16°
Pressure
29.34 inHg
Visibility
10 mi
UV Index
7.9
Cloud Cover
20%
Sunrise
6:58 AM
Sunset
7:56 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McKinney is currently mostly clear at 38°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1777 J/kg) — isolated convective development possible. Sunrise: 6:58AM · Sunset: 7:56PM.

Alerts

No active alerts for this location.
58 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
38°
3%
5 PM
37°
3%
6 PM
39°
3%
7 PM
38°
3%
8 PM
36°
3%
9 PM
34°
3%
10 PM
31°
3%
11 PM
30°
3%
12 AM
29°
3%
1 AM
28°
3%
2 AM
28°
3%
3 AM
27°
3%
4 AM
27°
3%
5 AM
26°
3%
6 AM
23°
3%
7 AM
23°
3%
8 AM
25°
3%
9 AM
27°
3%
10 AM
29°
3%
11 AM
32°
3%
12 PM
33°
3%
1 PM
33°
3%
2 PM
35°
3%
3 PM
38°
3%
7-Day Forecast
Today
39° 23°
Mostly Clear.
Sat
40° 23°
Clear.
Sun
41° 24°
Mostly Clear.
Mon
38° 24°
Mostly Clear.
Tue
37° 25°
Clear.
Wed
38° 25°
Clear.
Thu
39° 25°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 38° Mostly Clear 3% 7 mph E 24%
5 PM 37° Mostly Clear 3% 7 mph ESE 24%
6 PM 39° Clear 3% 7 mph ESE 23%
7 PM 38° Clear 3% 7 mph ESE 24%
8 PM 36° Clear 3% 6 mph ESE 28%
9 PM 34° Clear 3% 6 mph E 31%
10 PM 31° Clear 3% 5 mph E 35%
11 PM 30° Clear 3% 5 mph E 38%
12 AM 29° Clear 3% 6 mph ESE 42%
1 AM 28° Clear 3% 6 mph ESE 45%
2 AM 28° Clear 3% 6 mph ESE 50%
3 AM 27° Clear 3% 6 mph SE 55%
4 AM 27° Mostly Clear 3% 6 mph ESE 59%
5 AM 26° Clear 3% 5 mph ESE 63%
6 AM 23° Clear 3% 5 mph SE 68%
7 AM 23° Clear 3% 5 mph ESE 71%
8 AM 25° Clear 3% 5 mph SE 66%
9 AM 27° Clear 3% 6 mph SSE 59%
10 AM 29° Clear 3% 6 mph SSE 51%
11 AM 32° Clear 3% 6 mph S 44%
12 PM 33° Clear 3% 6 mph S 40%
1 PM 33° Clear 3% 5 mph S 37%
2 PM 35° Clear 3% 5 mph SSE 35%
3 PM 38° Clear 3% 6 mph SSE 33%
15-Day Forecast
Today
8/28
Mostly Clear
3%
23°
39°
Sat
8/29
Clear
3%
23°
40°
Sun
8/30
Mostly Clear
3%
24°
41°
Mon
8/31
Mostly Clear
3%
24°
38°
Tue
9/1
Clear
9%
25°
37°
Wed
9/2
Clear
9%
25°
38°
Thu
9/3
Clear
9%
25°
39°
Fri
9/4
Clear
25%
26°
38°
Sat
9/5
Clear
25%
26°
39°
Sun
9/6
Drizzle
60%
26°
39°
Mon
9/7
Drizzle
42%
26°
38°
Tue
9/8
Drizzle
60%
27°
38°
Wed
9/9
Drizzle
60%
26°
37°
Thu
9/10
Drizzle
60%
26°
36°
Fri
9/11
Drizzle
60%
25°
34°
58
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
54 AQI 10.9 µg/m³
O3
Ground-level ozone
Dominant
58 AQI 58 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 58 Moderate 58 54
Sun 104 Unhealthy for Sensitive Groups 104 56
Mon 80 Moderate 80 60
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 Fri Aug 28, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1209 J/kg
MLCAPE750 J/kg
MUCAPE1209 J/kg
SBCIN0 J/kg
MLCIN-17 J/kg
Lifted Index-3.3
Kinematics
0–6 km Shear13 kt
0–1 km Shear2 kt
Eff. Shear13 kt
0–1 km SRH-2
0–3 km SRH21
Eff. SRH21
Storm Motion28° @ 22 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.6
Thermo & Levels
PWAT1.48 in
0–3 km LR9.9 °C/km
700–500 LR5.7 °C/km
Total Totals49.5
LCL722 hPa
LFC993 hPa
EL211 hPa
Freezing Lvl14,898 ft