Today | Weather | Wednesday, January 7, 2026

Weather in McKinney, Texas

03:23 PM
Now
Cloudy Weather
73° F
Feels Like 73°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 2
Humidity 28 %
Today
Cloudy Weather
Day 75°
Night 63°
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 (January 7, 2025)
Cold Day

Day

37°

Night

23°

Wind

9 mph

UV Index

3

Precipitation

2 %

Air Quality in McKinney

NOW
54 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 14.07 µg/m³
PM10 19.68 µg/m³
O3 0.054 ppm
NO2 1.8 ppb
SO2 0.9 ppb
CO 0.15 ppm
NH3 0.16 µg/m³
NO 0.4 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.514.07 µg/m³
PM1019.68 µg/m³
O3106.36 µg/m³
NO23.38 µg/m³
SO22.31 µg/m³
CO176.19 µg/m³
NH30.16 µg/m³
NO0.4 µg/m³