Today | Weather | Friday, October 23, 2026

Active Weather Warnings

Air Quality Alert

Weather in McKinney, Texas

06:53 AM

Now

52° F

Feels Like 52°

Precipitation 5 %

Wind 4 mph

Humidity 85 %

Today

Day 84°

Night 54°

Precipitation 1 %

Wind 7 mph

UV Index (0 - 11+) 4

McKinney Weather Forecast Updated

44 minutes ago

Last updated on October 23, 2026 at 6:09 AM

Weather Forecast History

Last Year's Weather on This Day (October 23, 2025)

Day

81°

Night

63°

Wind

7 mph

Precipitation

49 %

Air Quality in McKinney

NOW

60 AQI

Moderate air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 16.54 µg/m³

PM₁₀ 17.7 µg/m³

O₃ 0.022 ppm

NO₂ 3.1 ppb

SO₂ 0.2 ppb

CO 0.17 ppm

NH₃ 1.67 µg/m³

NO 0 µg/m³

PM_2.5 – 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)

PM_2.5 – 16.54 µg/m³

PM₁₀ – 17.7 µg/m³

O₃ – 43.85 µg/m³

NO₂ – 5.8 µg/m³

SO₂ – 0.4 µg/m³

CO – 198.3 µg/m³

NH₃ – 1.67 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for McKinney

Air Quality Alert

Air Quality Alert issued October 22 at 3:21PM CDT by NWS Fort Worth TX

Oct 22, 3:21 PM → Oct 23, 6:30 PM

AQAFWD

The Texas Commission on Environmental Quality (TCEQ) has issued
an Ozone Action Day for the Dallas-Fort Worth area for Friday,
October 23, 2026.

Atmospheric conditions are expected to be favorable for producing
high levels of ozone air pollution in the Dallas-Fort Worth area
on Friday. You can help prevent ozone pollution by sharing a
ride, walking, riding a bicycle, taking your lunch to work,
avoiding drive-through lanes, conserving energy, and keeping your
vehicle properly tuned.

For more information on ozone:

Ozone: The Facts (www.tceq.texas.gov/goto/ozonefacts)

Air North Texas: (www.airnorthtexas.org)

EPA Air Now
(www.airnow.gov/index.cfm?action.local_state&STATEID=45&TAB=0)

Take care of Texas (www.takecareoftexas.org)

North Central Texas Council of Governments Air Quality
(www.nctcog.org/trans/air/index.asp)

Updated: Oct 23, 6:09 AM Source: NWS Alert