What is the current Air Quality Index (AQI) in Dallas, Texas today?

The AQI in Dallas changes throughout the day based on pollutant concentrations. Check the live AQI map above for the most current reading. Values range from 0 (Good) to 500 (Hazardous). The EPA calculates Dallas's AQI using five major pollutants: ground-level ozone, particle pollution (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide.

What do the AQI numbers mean for my health in Dallas?

AQI categories: 0-50 (Good) air quality is satisfactory. 51-100 (Moderate) acceptable but may concern sensitive individuals. 101-150 (Unhealthy for Sensitive Groups) affects people with respiratory or heart conditions, children, and older adults. 151-200 (Unhealthy) affects the general public. 201-300 (Very Unhealthy) triggers health alerts for everyone. 301-500 (Hazardous) means emergency conditions. On days when Dallas experiences elevated ozone or PM2.5, sensitive groups should limit outdoor activity.

Why does Dallas have poor air quality?

Dallas's air quality challenges stem from transportation emissions and industrial activity. The Dallas-Fort Worth metroplex has seen a 27% per capita increase in transportation emissions since 1997, driven by population growth, more vehicles, and longer commutes. Industrial and petroleum facilities in North Texas also contribute significant pollutants. Seasonal ozone formation during hot summer months further elevates AQI readings.

How can I improve my indoor air quality in Dallas?

Use high-quality HVAC air filters rated MERV 11 or higher to capture fine particles like PM2.5, dust, pollen, and mold spores. MERV 13 filters provide maximum protection during poor outdoor air quality days. Replace filters every 60-90 days or more frequently during high pollution seasons. Keep windows and doors closed when AQI is above 100. Running your HVAC fan continuously helps circulate and filter indoor air.

What MERV rating air filter should I use during bad air quality days in Dallas?

A MERV 13 air filter provides the best residential protection during elevated AQI days. MERV 13 captures up to 98% of particles between 3-10 microns and approximately 90% of particles between 1-3 microns, including PM2.5, bacteria, smoke, and smog. For everyday baseline protection, MERV 11 filters capture dust, pollen, mold spores, and pet dander. Confirm your HVAC system can accommodate the rating before upgrading.

How often should I check the air quality index in Dallas?

Check Dallas's AQI daily, especially during summer months (May-September) when ozone levels peak. Monitor more frequently during wildfire events, dust episodes, or industrial incidents. The EPA's AirNow.gov and the Texas Commission on Environmental Quality (TCEQ) provide real-time data. Sign up for AirNow's EnviroFlash alerts for automatic notifications when Dallas AQI reaches unhealthy levels.