Air Monitoring Data & AQI

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

Issued: Tuesday, February 18, 2020, 2:30 PM

Tuesday and Wednesday, a cold front moving through Louisiana will increase vertical mixing in the atmosphere and generate moderate winds at the surface. These conditions will effectively disperse pollutants, leading to Good AQI levels for most cities on both days. Thursday, moderate and gusty northerly to northeasterly winds behind the departing cold front will keep pollutants well dispersed. In addition, cloudy skies and scattered thunderstorms will hinder ozone formation. Thus, AQI levels will be Good across the Bayou State.

Baton Rouge

 Tuesday Wednesday Thursday
Ozone 28 - Good 27 - Good 25 - Good
PM25 38 - Good 29 - Good 25 - Good

Alexandria

 Tuesday Wednesday Thursday
Ozone 24 - Good 22 - Good 19 - Good
PM25 33 - Good 25 - Good 21 - Good

Lake Charles

 Tuesday Wednesday Thursday
Ozone 24 - Good 23 - Good 20 - Good
PM25 53 - Moderate 50 - Good 38 - Good

Lafayette

 Tuesday Wednesday Thursday
Ozone 26 - Good 25 - Good 22 - Good
PM25 29 - Good 25 - Good 17 - Good

Monroe

 Tuesday Wednesday Thursday
Ozone 22 - Good 21 - Good 19 - Good
PM25 38 - Good 33 - Good 25 - Good

New Orleans

 Tuesday Wednesday Thursday
Ozone 23 - Good 22 - Good 20 - Good
PM25 46 - Good 33 - Good 29 - Good

Shreveport

 Tuesday Wednesday Thursday
Ozone 23 - Good 21 - Good 19 - Good
PM25 46 - Good 38 - Good 29 - Good

Thibodaux

 Tuesday Wednesday Thursday
Ozone 24 - Good 23 - Good 20 - Good
PM25 38 - Good 33 - 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.