There are six criteria pollutants for which the U.S. Environmental Protection Agency has set national ambient air quality standards:
Shreveport's air quality is in attainment with all of these standards. Ground-level ozone (also known as smog) is a concern throughout the country during the hottest months of the year. There are 2 monitors which measure and record ground-level ozone in the Shreveport area:
One is located in Dixie, Louisiana, north of town
The other is located at Shreveport Downtown Airport
The monitors are maintained by the Louisiana Department of Environmental Quality.
For real-time ozone conditions across the country and ozone forecasts, go to AirNow webpage.
Here's a link to the ozone alert system used by DEQ, "Enviroflash." You can sign up for this service and you'll be notified of ozone forecasts and alerts at EnviroFlash.