Air Monitoring Data & AQI

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

Issued: Friday, February 6, 2026, 2:32 PM

Friday, periods of light westerly to west-northwesterly winds will inhibit dispersion, while sunny skies and temperatures around 70-80F will enhance ozone formation. These conditions will yield high-Good to low-Moderate AQI levels. Saturday, a morning inversion will confine pollutants near the ground, while vertical mixing will be limited by a ridge of high pressure aloft west of the state. However, northeasterly surface winds will aid dispersion, and slightly cooler temperatures will decrease ozone development. Thus, AQI levels will be Good to high-Good. Sunday, calm to light southerly winds will inhibit dispersion and recirculate pollutants into Louisiana. In addition, a morning inversion will trap pollutants at the surface, while ample sunshine and warmer temperatures will increase ozone formation. Therefore, AQI levels will be low-Moderate statewide.

Baton Rouge

 Friday Saturday Sunday
Ozone 51 - Moderate 46 - Good 54 - Moderate
PM25 44 - Good 39 - Good 55 - Moderate

Alexandria

 Friday Saturday Sunday
Ozone 45 - Good 41 - Good 45 - Good
PM25 53 - Moderate 44 - Good 53 - Moderate

Lake Charles

 Friday Saturday Sunday
Ozone 46 - Good 42 - Good 46 - Good
PM25 39 - Good 33 - Good 53 - Moderate

Lafayette

 Friday Saturday Sunday
Ozone 54 - Moderate 46 - Good 51 - Moderate
PM25 39 - Good 33 - Good 53 - Moderate

Monroe

 Friday Saturday Sunday
Ozone 47 - Good 43 - Good 47 - Good
PM25 53 - Moderate 44 - Good 53 - Moderate

New Orleans

 Friday Saturday Sunday
Ozone 50 - Good 46 - Good 54 - Moderate
PM25 50 - Good 44 - Good 56 - Moderate

Shreveport

 Friday Saturday Sunday
Ozone 45 - Good 41 - Good 45 - Good
PM25 50 - Good 44 - Good 55 - Moderate

Thibodaux

 Friday Saturday Sunday
Ozone 50 - Good 46 - Good 51 - Moderate
PM25 50 - Good 44 - Good 56 - 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.