Ozone pollution is expected to reach a concerning level on Friday.
"Atmospheric conditions are expected to be favorable for producing high levels of ozone pollution in the Houston, Galveston, and surrounding areas on Friday," the alert posted by the National Weather Service (NWS) said. "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."
Dallas has an extensive light rail network now. A friend rode it recently (wanted to check out all the major 3 lines and stops along the way), said it was all homeless and poor people.