Air Monitoring Data & AQI

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

Issued: Friday, February 13, 2026, 2:32 PM

Friday, upper-level high pressure will limit atmospheric mixing across the Bayou State, while periods of sunshine will aid ozone development. Additionally, calm to light south-southeasterly surface winds will reduce pollutant dispersion in Louisiana. Furthermore, smoke from localized agricultural fires may contribute to particle concentrations in some areas. As a result, AQI levels will be low- to mid-Moderate statewide. Saturday, calm to light southerly to southeasterly morning winds will allow pollutants to linger over Louisiana, and morning fog will enhance particle formation. However, an approaching cold front will strengthen south-southeasterly winds in the afternoon and evening, aiding dispersion. Therefore, AQI levels will be high-Good to low-Moderate in most cities. Sunday, as the front traverses Louisiana, atmospheric mixing will be enhanced. Additionally, westerly to west-northwesterly winds behind the front will transport cleaner air into the state. Thus, AQI levels will be Good statewide.

Baton Rouge

 Friday Saturday Sunday
Ozone 46 - Good 41 - Good 37 - Good
PM25 69 - Moderate 55 - Moderate 39 - Good

Alexandria

 Friday Saturday Sunday
Ozone 43 - Good 37 - Good 33 - Good
PM25 64 - Moderate 50 - Good 28 - Good

Lake Charles

 Friday Saturday Sunday
Ozone 43 - Good 37 - Good 33 - Good
PM25 56 - Moderate 44 - Good 28 - Good

Lafayette

 Friday Saturday Sunday
Ozone 54 - Moderate 41 - Good 37 - Good
PM25 62 - Moderate 50 - Good 33 - Good

Monroe

 Friday Saturday Sunday
Ozone 44 - Good 38 - Good 34 - Good
PM25 53 - Moderate 39 - Good 22 - Good

New Orleans

 Friday Saturday Sunday
Ozone 47 - Good 42 - Good 37 - Good
PM25 73 - Moderate 56 - Moderate 39 - Good

Shreveport

 Friday Saturday Sunday
Ozone 42 - Good 37 - Good 33 - Good
PM25 66 - Moderate 39 - Good 28 - Good

Thibodaux

 Friday Saturday Sunday
Ozone 44 - Good 38 - Good 34 - Good
PM25 69 - Moderate 55 - Moderate 39 - 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.