Today | Weather | Thursday, October 29, 2026

Weather in McKinney, Texas

09:31 AM
Now
Cloudy Weather
72° F
Feels Like 73°
Precipitation 7 %
Wind 7 mph
UV Index (0 - 11+) 1
Humidity 85 %
Today
Partly Sunny with Showers
Day 81°
Night 64°
Precipitation 49 %
Wind 7 mph
UV Index (0 - 11+) 2

McKinney Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 29, 2025)
Night

Day

75°

Night

43°

Wind

9 mph

Precipitation

0 %

Air Quality in McKinney

NOW
32 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.54 µg/m³
PM10 7.7 µg/m³
O3 0.035 ppm
NO2 1.3 ppb
SO2 0.2 ppb
CO 0.11 ppm
NH3 0.16 µg/m³
NO 0.03 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)
PM2.5 – 3.54 µg/m³
PM10 – 7.7 µg/m³
O3 – 68.41 µg/m³
NO2 – 2.42 µg/m³
SO2 – 0.52 µg/m³
CO – 126.53 µg/m³
NH3 – 0.16 µg/m³
NO – 0.03 µg/m³