McKinney, Texas

Last updated: 4:49 PM CDT  ·  Refresh
38°C
Feels like 38°
Mostly Clear
▲ 39°  /  ▼ 23°
Wind
7 mph E
Humidity
25%
Dew Point
16°
Pressure
29.32 inHg
Visibility
10 mi
UV Index
7.1
Cloud Cover
12%
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 2281 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
39°
3%
6 PM
39°
3%
7 PM
37°
3%
8 PM
35°
3%
9 PM
32°
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
23°
3%
6 AM
23°
3%
7 AM
24°
3%
8 AM
27°
3%
9 AM
28°
3%
10 AM
30°
3%
11 AM
32°
3%
12 PM
33°
3%
1 PM
35°
3%
2 PM
36°
3%
3 PM
36°
3%
7-Day Forecast
Today
39° 23°
Mostly Clear.
Sat
40° 23°
Clear.
Sun
41° 24°
Clear.
Mon
38° 23°
Clear.
Tue
37° 24°
Clear.
Wed
38° 25°
Clear.
Thu
39° 25°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 38° Mostly Clear 3% 7 mph E 25%
5 PM 39° Clear 3% 7 mph ESE 23%
6 PM 39° Mostly Clear 3% 7 mph ESE 24%
7 PM 37° Mostly Clear 3% 6 mph ESE 27%
8 PM 35° Clear 3% 5 mph ESE 31%
9 PM 32° Clear 3% 6 mph E 34%
10 PM 31° Clear 3% 5 mph ESE 38%
11 PM 30° Clear 3% 6 mph ESE 41%
12 AM 29° Clear 3% 6 mph ESE 45%
1 AM 28° Clear 3% 6 mph ESE 49%
2 AM 28° Clear 3% 6 mph ESE 53%
3 AM 27° Clear 3% 5 mph SE 57%
4 AM 27° Clear 3% 5 mph SE 63%
5 AM 23° Clear 3% 5 mph SE 69%
6 AM 23° Clear 3% 5 mph SE 75%
7 AM 24° Clear 3% 5 mph SE 72%
8 AM 27° Clear 3% 5 mph SSE 66%
9 AM 28° Clear 3% 6 mph SSE 58%
10 AM 30° Clear 3% 6 mph S 50%
11 AM 32° Clear 3% 6 mph S 45%
12 PM 33° Clear 3% 6 mph S 40%
1 PM 35° Clear 3% 6 mph S 38%
2 PM 36° Clear 3% 6 mph SSE 36%
3 PM 36° Clear 3% 7 mph SE 34%
15-Day Forecast
Today
8/28
Mostly Clear
3%
23°
39°
Sat
8/29
Clear
3%
23°
40°
Sun
8/30
Clear
3%
24°
41°
Mon
8/31
Clear
3%
23°
38°
Tue
9/1
Clear
19%
24°
37°
Wed
9/2
Clear
9%
25°
38°
Thu
9/3
Clear
9%
25°
39°
Fri
9/4
Clear
25%
25°
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, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1028 J/kg
MLCAPE510 J/kg
MUCAPE1028 J/kg
SBCIN-0 J/kg
MLCIN-15 J/kg
Lifted Index-2.8
Kinematics
0–6 km Shear13 kt
0–1 km Shear3 kt
Eff. Shear13 kt
0–1 km SRH-0
0–3 km SRH26
Eff. SRH26
Storm Motion34° @ 21 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.2
Thermo & Levels
PWAT1.38 in
0–3 km LR9.7 °C/km
700–500 LR5.7 °C/km
Total Totals48.3
LCL721 hPa
LFC993 hPa
EL211 hPa
Freezing Lvl15,085 ft