Air Monitoring Data & AQI

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

Issued: Monday, October 21, 2019, 2:30 PM

Monday, a cold front will move through Louisiana, producing showers and windy conditions. These conditions will limit ozone formation and enhance mixing in the atmosphere. As a result, AQI levels will be Good statewide. Tuesday, light to moderate northerly winds behind the departing cold front will bring a clean air mass into Louisiana. Furthermore, cooler temperatures will inhibit ozone production. As a result, AQI levels will remain Good. Wednesday, as high pressure moves through Louisiana, light morning winds will reduce pollutant dispersion. However, light to moderate east-southeasterly winds will develop in the afternoon, dispersing pollutants and causing AQI levels to be Good to low-Moderate.

Baton Rouge

Monday Tuesday Wednesday
Ozone 34 - Good 40 - Good 46 - Good
PM25 38 - Good 29 - Good 53 - Moderate

Alexandria

Monday Tuesday Wednesday
Ozone 32 - Good 37 - Good 42 - Good
PM25 33 - Good 25 - Good 33 - Good

Lake Charles

Monday Tuesday Wednesday
Ozone 37 - Good 39 - Good 44 - Good
PM25 38 - Good 29 - Good 38 - Good

Lafayette

Monday Tuesday Wednesday
Ozone 32 - Good 36 - Good 43 - Good
PM25 25 - Good 25 - Good 38 - Good

Monroe

Monday Tuesday Wednesday
Ozone 34 - Good 37 - Good 42 - Good
PM25 29 - Good 25 - Good 38 - Good

New Orleans

Monday Tuesday Wednesday
Ozone 31 - Good 39 - Good 44 - Good
PM25 38 - Good 29 - Good 46 - Good

Shreveport

Monday Tuesday Wednesday
Ozone 36 - Good 39 - Good 43 - Good
PM25 21 - Good 21 - Good 33 - Good

Thibodaux

Monday Tuesday Wednesday
Ozone 35 - Good 38 - Good 42 - Good
PM25 42 - Good 33 - Good 46 - 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.