Air Monitoring Data & AQI

« Back to DEQ's Main Website

Ozone and PM2.5 Air Quality Index (AQI) Forecast

Issued: Friday, June 24, 2022, 2:30 PM

Friday and Saturday, an upper-level ridge of high pressure will limit atmospheric mixing across the Bayou State each day, allowing a thin plume of smoke and ozone precursors to linger over the region. In addition, triple-digit heat and periods of sun will enhance ozone development. These conditions will lead to Moderate to high-Moderate AQI levels on both days. Sunday, an increase in moisture will enhance low-level mixing and produce scattered thunderstorms across Louisiana. However, partly sunny skies and continued hot temperatures will promote ozone production while particle levels remain elevated from regional smoke. As a result, AQI levels will continue to be Moderate.

Baton Rouge

Friday Saturday Sunday
Ozone 100 - Moderate 84 - Moderate 64 - Moderate
PM25 66 - Moderate 61 - Moderate 59 - Moderate


Friday Saturday Sunday
Ozone 61 - Moderate 61 - Moderate 50 - Good
PM25 55 - Moderate 55 - Moderate 53 - Moderate

Lake Charles

Friday Saturday Sunday
Ozone 84 - Moderate 77 - Moderate 58 - Moderate
PM25 50 - Good 53 - Moderate 53 - Moderate


Friday Saturday Sunday
Ozone 67 - Moderate 61 - Moderate 51 - Moderate
PM25 42 - Good 46 - Good 46 - Good


Friday Saturday Sunday
Ozone 67 - Moderate 71 - Moderate 51 - Moderate
PM25 59 - Moderate 57 - Moderate 57 - Moderate

New Orleans

Friday Saturday Sunday
Ozone 77 - Moderate 90 - Moderate 61 - Moderate
PM25 59 - Moderate 57 - Moderate 55 - Moderate


Friday Saturday Sunday
Ozone 77 - Moderate 74 - Moderate 61 - Moderate
PM25 66 - Moderate 68 - Moderate 63 - Moderate


Friday Saturday Sunday
Ozone 67 - Moderate 67 - Moderate 51 - Moderate
PM25 55 - Moderate 55 - Moderate 53 - Moderate

More Information About Understanding AQI Information

The AQI is an index for reporting daily air quality. It tells you how clean or unhealthy your air is, and what associated health effects might be a concern. The AQI focuses on health effects you may experience within a few hours or days after breathing unhealthy air. The following chart provides information regarding the AQI determinations:

Category AQI Value What This Means
Good 0-50 Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate 51-100 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.
Unhealthy for Sensitive Groups 101-150 Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy 151-200 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy 201-300 Health warnings of emergency conditions. The entire population is more likely to be affected.
Hazardous 301-500 Health alert: everyone may experience more serious health effects.

Any questions about interpreting this monitoring data should be directed to the DEQ Customer Services Section at 1-866-896-5337.

TO REPORT ENVIRONMENTAL CONCERNS, INCLUDING ODORS, CONTACT THE DEQ SINGLE POINT OF CONTACT (SPOC) - 225-219-3640 or Toll Free 1-888-763-5424. In the event of an environmental emergency, citizens are encouraged to first contact their local authorities - police, sheriff, fire department, etc. Otherwise citizens and the regulated community can contact the SPOC line to report environmental concerns during business hours, 8 a.m. - 4:30 p.m., Monday through Friday at the number listed above. To report a concern outside of business hours call 225-342-1234 or the toll free number. Concerns include spills, releases, odors, fish kills, open burning, waste tires and any other types of environmental incidents. Citizens can report the incident online.

The data has not been quality reviewed or validated. Continuous PM2.5 readings shown are not NAAQS comparable.