Air Monitoring Data & AQI

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

Issued: Saturday, December 3, 2022, 2:30 PM

Saturday, as a cold front advances southward through the Bayou State, mixing will increase, and light to moderate northerly to north-northeasterly winds will aid dispersion. These conditions will result in Good AQI levels across the state. Sunday, winds will become light and variable, which will reduce mixing and dispersion over much of Louisiana. Additionally, morning fog will enhance particle formation. However, low pollutant carryover from the previous day will yield high-Good AQI levels in most cities. Monday, a warm front will pass over Louisiana, generating moderate and gusty southerly to south-southeasterly winds. These winds will disperse pollutants, yielding Good AQI levels statewide.

Baton Rouge

Saturday Sunday Monday
Ozone 31 - Good 29 - Good 32 - Good
PM25 38 - Good 50 - Good 33 - Good


Saturday Sunday Monday
Ozone 22 - Good 20 - Good 24 - Good
PM25 29 - Good 42 - Good 25 - Good

Lake Charles

Saturday Sunday Monday
Ozone 24 - Good 22 - Good 26 - Good
PM25 29 - Good 42 - Good 25 - Good


Saturday Sunday Monday
Ozone 25 - Good 23 - Good 27 - Good
PM25 33 - Good 46 - Good 29 - Good


Saturday Sunday Monday
Ozone 20 - Good 19 - Good 22 - Good
PM25 25 - Good 38 - Good 21 - Good

New Orleans

Saturday Sunday Monday
Ozone 30 - Good 28 - Good 31 - Good
PM25 29 - Good 42 - Good 25 - Good


Saturday Sunday Monday
Ozone 21 - Good 19 - Good 23 - Good
PM25 33 - Good 46 - Good 29 - Good


Saturday Sunday Monday
Ozone 28 - Good 26 - Good 30 - Good
PM25 29 - Good 42 - Good 25 - 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.