Air Monitoring Data & AQI

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

Issued: Friday, January 23, 2026, 2:30 PM

Friday, as an arctic surface high-pressure system builds to the north, strengthening northeasterly winds will increase mixing and dispersion, resulting in Good to high-Good AQI levels. Saturday, as the surface high expands over the Northeast, periods of moderate easterly to northeasterly winds will aid dispersion throughout the day. In addition, scattered thunderstorms and widespread precipitation will enhance atmospheric mixing. Thus, AQI levels will remain Good to high-Good in the Bayou State. Sunday, as a surface low-pressure system develops to the east and high pressure moves southward over Texas, gusty north-northwesterly winds will aid dispersion and carry a clean and cold air mass into the South. In addition, thunderstorms and widespread precipitation will continue to promote mixing. Therefore, AQI levels will be Good statewide.

Baton Rouge

 Friday Saturday Sunday
Ozone 34 - Good 31 - Good 21 - Good
PM25 50 - Good 44 - Good 39 - Good

Alexandria

 Friday Saturday Sunday
Ozone 30 - Good 26 - Good 20 - Good
PM25 33 - Good 28 - Good 33 - Good

Lake Charles

 Friday Saturday Sunday
Ozone 29 - Good 25 - Good 20 - Good
PM25 28 - Good 22 - Good 33 - Good

Lafayette

 Friday Saturday Sunday
Ozone 32 - Good 31 - Good 19 - Good
PM25 22 - Good 17 - Good 17 - Good

Monroe

 Friday Saturday Sunday
Ozone 29 - Good 25 - Good 19 - Good
PM25 28 - Good 22 - Good 39 - Good

New Orleans

 Friday Saturday Sunday
Ozone 33 - Good 31 - Good 23 - Good
PM25 44 - Good 39 - Good 39 - Good

Shreveport

 Friday Saturday Sunday
Ozone 27 - Good 25 - Good 20 - Good
PM25 33 - Good 28 - Good 33 - Good

Thibodaux

 Friday Saturday Sunday
Ozone 30 - Good 26 - Good 21 - Good
PM25 44 - Good 39 - Good 33 - 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.