Air Monitoring Data & AQI

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

Issued: Wednesday, July 2, 2025, 2:32 PM

Wednesday through Independence Day, isolated to scattered thunderstorms each day will enhance atmospheric mixing and inhibit ozone production. However, calm to light surface winds throughout the period will hinder dispersion and allow Saharan dust to linger, keeping particle levels elevated over much of the Bayou State. Additionally, fireworks displays will lead to localized increases in particle concentrations on Friday evening. These conditions will yield low- to mid-Moderate AQI levels in most cities on all three days.

Baton Rouge

 Wednesday Thursday Friday
Ozone 61 - Moderate 48 - Good 51 - Moderate
PM25 68 - Moderate 66 - Moderate 71 - Moderate

Alexandria

 Wednesday Thursday Friday
Ozone 42 - Good 37 - Good 41 - Good
PM25 62 - Moderate 58 - Moderate 56 - Moderate

Lake Charles

 Wednesday Thursday Friday
Ozone 41 - Good 40 - Good 44 - Good
PM25 68 - Moderate 66 - Moderate 71 - Moderate

Lafayette

 Wednesday Thursday Friday
Ozone 41 - Good 37 - Good 42 - Good
PM25 73 - Moderate 68 - Moderate 66 - Moderate

Monroe

 Wednesday Thursday Friday
Ozone 47 - Good 40 - Good 44 - Good
PM25 44 - Good 55 - Moderate 53 - Moderate

New Orleans

 Wednesday Thursday Friday
Ozone 44 - Good 44 - Good 49 - Good
PM25 69 - Moderate 66 - Moderate 71 - Moderate

Shreveport

 Wednesday Thursday Friday
Ozone 51 - Moderate 45 - Good 49 - Good
PM25 44 - Good 56 - Moderate 66 - Moderate

Thibodaux

 Wednesday Thursday Friday
Ozone 28 - Good 28 - Good 33 - Good
PM25 75 - Moderate 68 - Moderate 66 - 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.