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

Issued: Sunday, June 7, 2026, 2:30 PM

Sunday and Monday, light to moderate southerly winds will transport a thin plume of Saharan dust across the state, raising particle levels. Therefore, despite scattered showers and thunderstorms limiting ozone production and promoting atmospheric mixing each day, AQI levels will be low-Moderate statewide on both days. Tuesday, lingering dust will keep particle concentrations slightly elevated. Furthermore, increasing sunshine will enhance ozone development in the afternoon. However, southerly winds will gradually disperse pollutants and carry cleaner air into Louisiana, leading to high-Good to low-Moderate AQI levels.

Baton Rouge

 Sunday Monday Tuesday
Ozone 31 - Good 34 - Good 43 - Good
PM25 60 - Moderate 58 - Moderate 53 - Moderate

Alexandria

 Sunday Monday Tuesday
Ozone 26 - Good 30 - Good 32 - Good
PM25 58 - Moderate 56 - Moderate 53 - Moderate

Lake Charles

 Sunday Monday Tuesday
Ozone 23 - Good 31 - Good 37 - Good
PM25 62 - Moderate 60 - Moderate 53 - Moderate

Lafayette

 Sunday Monday Tuesday
Ozone 22 - Good 28 - Good 33 - Good
PM25 58 - Moderate 55 - Moderate 50 - Good

Monroe

 Sunday Monday Tuesday
Ozone 21 - Good 30 - Good 37 - Good
PM25 56 - Moderate 56 - Moderate 53 - Moderate

New Orleans

 Sunday Monday Tuesday
Ozone 30 - Good 37 - Good 42 - Good
PM25 64 - Moderate 60 - Moderate 55 - Moderate

Shreveport

 Sunday Monday Tuesday
Ozone 22 - Good 32 - Good 38 - Good
PM25 62 - Moderate 62 - Moderate 58 - Moderate

Thibodaux

 Sunday Monday Tuesday
Ozone 25 - Good 31 - Good 35 - Good
PM25 56 - Moderate 55 - Moderate 50 - Good

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.