Today | Weather | Wednesday, February 25, 2026

Weather in McKinney, Texas

09:47 PM
Now
Cloudy Night
63° F
Feels Like 63°
Precipitation 0 %
Wind 2 mph
Humidity 67 %
Today
Cloudy Night
Day 79°
Night 54°
Precipitation 1 %
Wind 4 mph

McKinney Weather Forecast Updated

1 minute ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 25, 2025)
Sunny Weather

Day

73°

Night

52°

Wind

8 mph

UV Index

5

Precipitation

0 %

Air Quality in McKinney

NOW
43 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 10.35 µg/m³
PM10 15.9 µg/m³
O3 0.039 ppm
NO2 4.4 ppb
SO2 0.4 ppb
CO 0.17 ppm
NH3 2.36 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)
PM2.510.35 µg/m³
PM1015.9 µg/m³
O377.18 µg/m³
NO28.21 µg/m³
SO21.17 µg/m³
CO200.02 µg/m³
NH32.36 µg/m³
NO0 µg/m³