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

Current Air Data

Issued: 02:31 PM,TUE APR 22 2014
Baton RougeTuesdayWednesdayThursday
Ozone47-Good90-Moderate67-Moderate
PM2555-Moderate59-Moderate53-Moderate
AlexandriaTuesdayWednesdayThursday
Ozone38-Good51-Moderate47-Good
PM2553-Moderate55-Moderate50-Moderate
Lake CharlesTuesdayWednesdayThursday
Ozone42-Good51-Moderate49-Good
PM2538-Good53-Moderate46-Good
LafayetteTuesdayWednesdayThursday
Ozone42-Good64-Moderate58-Moderate
PM2557-Moderate59-Moderate53-Moderate
MonroeTuesdayWednesdayThursday
Ozone38-Good51-Moderate48-Good
PM2553-Moderate57-Moderate50-Moderate
New OrleansTuesdayWednesdayThursday
Ozone40-Good84-Moderate67-Moderate
PM2550-Moderate55-Moderate50-Moderate
ShreveportTuesdayWednesdayThursday
Ozone41-Good51-Moderate47-Good
PM2542-Good50-Moderate42-Good
ThibodauxTuesdayWednesdayThursday
Ozone41-Good58-Moderate49-Good
PM2546-Good53-Moderate50-Moderate

REMARKS:Tuesday, morning fog and mist will enhance particle production, especially across southern Louisiana. However, as a weak cold front moves through the state, light to moderate northwesterly winds will help to disperse pollutants, and partly to mostly cloudy skies will limit ozone formation. Therefore, AQI levels will be Good to low-Moderate statewide. Wednesday, surface high pressure moving across Louisiana will produce light and variable winds, reducing pollutant dispersion. Furthermore, increasing sunshine and warm temperatures will enhance ozone formation. These conditions will lead to Moderate AQI levels statewide, with high-Moderate AQI levels expected in Baton Rouge and New Orleans. Thursday, as high pressure moves east and a cold front approaches from the west, light to moderate southerly winds will develop in Louisiana, helping to disperse pollutants. However, partly to mostly sunny skies and warm temperatures will continue to support ozone production, leading to Good to low-Moderate AQI levels across the state.

Louisiana Department of Environmental Quality 602 N. Fifth Street Baton Rouge, LA 70802
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