Today | Weather | Tuesday, April 7, 2026

Weather in McKinney, Texas

07:05 AM
Now
Cloudy Night
46° F
Feels Like 46°
Precipitation 0 %
Wind 5 mph
Humidity 79 %
Today
Cloudy Weather
Day 72°
Night 52°
Precipitation 1 %
Wind 9 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

McKinney Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 7, 2025)
Sunny Weather

Day

64°

Night

39°

Wind

8 mph

UV Index

8

Precipitation

0 %

Air Quality in McKinney

NOW
24 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.93 µg/m³
PM10 4.94 µg/m³
O3 0.026 ppm
NO2 1.8 ppb
SO2 0.2 ppb
CO 0.12 ppm
NH3 2.31 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.53.93 µg/m³
PM104.94 µg/m³
O350.49 µg/m³
NO23.32 µg/m³
SO20.5 µg/m³
CO138.67 µg/m³
NH32.31 µg/m³
NO0 µg/m³