Today | Weather | Monday, December 15, 2025

Weather in McKinney, Texas

03:24 PM
Now
Cloudy Weather
46° F
Feels Like 43°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 2
Humidity 32 %
Today
Cloudy Weather
Day 46°
Night 39°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 3

McKinney Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 15, 2024)
Stormy Weather

Day

75°

Night

64°

Wind

12 mph

Precipitation

84 %

Air Quality in McKinney

NOW
36 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.39 µg/m³
PM10 4.6 µg/m³
O3 0.039 ppm
NO2 1.8 ppb
SO2 0.7 ppb
CO 0.13 ppm
NH3 0.87 µg/m³
NO 0.58 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)
PM2.53.39 µg/m³
PM104.6 µg/m³
O376.82 µg/m³
NO23.37 µg/m³
SO21.96 µg/m³
CO146.05 µg/m³
NH30.87 µg/m³
NO0.58 µg/m³