Next 24 hours

US AQI

37Now
37
37
372 AM
37
36
355 AM
35
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358 AM
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3511 AM
37
39
412 PM
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455 PM
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458 PM
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Air quality outlook

Worst hour each day

Today39Good
Sat 1745Good
Sun 1859Moderate
Mon 1967Moderate
Tue 2090Moderate

From our air-quality forecast models (GEOS-CF / GEFS aerosols). AQI uses the US EPA scale.

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About McKinney weather

McKinney is in Collin County, Texas, United States at 33.20°, -96.62°. Right now it’s 54° and partly cloudy; today’s high is 64° with a 0% chance of rain.

Texas encompasses a vast range of climates due to its enormous size, from humid subtropical conditions along the Gulf Coast to arid desert in the west, and from semi-tropical in the Rio Grande Valley to continental on the northern plains. The state is so large that it spans multiple climate zones, with annual rainfall ranging from over 55 inches in the east to less than 10 inches in far west Texas near El Paso.