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TCEQ Daily Air Quality Forecast Update

Environmental assessment information: the “Texas Daily Air Quality Forecast” from the Texas Commission on Environmental Quality. This information has recently been updated, and is now available [ http://www.tceq.texas.gov/airquality/monops/forecast_today.html ].

Forecast is for Ozone, PM2.5, & PM10, and is based on EPA’s Air Quality Index (AQI)
AQI Scale [ https://airnow.gov/index.cfm?action=aqibasics.aqi ] *Forecast Region*
*(Click name for AIRNOW version)* *Wed*
*03/27/2019* *Thu*
*03/28/2019* *Fri*
*03/29/2019* *Sat*
*03/30/2019* *Amarillo* [ https://www.airnow.gov/?reportingArea=Amarillo&stateCode=TX ] Good Ozone Ozone Good *Austin* [ https://airnow.gov/?reportingArea=Austin&stateCode=TX ] Ozone/PM2.5 Good Good Good *Beaumont-Port Arthur* [ https://www.airnow.gov/?reportingArea=Beaumont-Port%20Arthur&stateCode=TX ] Ozone Ozone Good Good *Brownsville-McAllen* [ https://www.airnow.gov/?reportingArea=Brownsville-McAllen&stateCode=TX ] Good Good Good Good *Corpus Christi* [ https://www.airnow.gov/?reportingArea=Corpus%20Christi&stateCode=TX ] Good Good Good Good *Dallas-Fort Worth* [ https://www.airnow.gov/?reportingArea=Dallas-Fort%20Worth&stateCode=TX ] Ozone/PM2.5 PM2.5 Good PM2.5 *El Paso* [ https://www.airnow.gov/?reportingArea=El%20Paso&stateCode=TX ] Ozone/PM2.5 Ozone Ozone Ozone *Houston* [ https://www.airnow.gov/?reportingArea=Houston-Galveston-Brazoria&stateCode=TX ] Ozone Ozone Ozone Ozone *Laredo* [ https://www.airnow.gov/?reportingArea=Laredo&stateCode=TX ] Good Good Good Good *Lubbock* [ https://www.airnow.gov/?reportingArea=Lubbock&stateCode=TX ] Good Ozone Ozone Good *Midland-Odessa* [ https://www.airnow.gov/?reportingArea=Midland-Odessa&stateCode=TX ] Good Ozone Ozone Ozone *San Antonio* [ https://www.airnow.gov/?reportingArea=San%20Antonio&stateCode=TX ] Ozone/PM2.5 Good Good Good *Tyler-Longview* [ https://www.airnow.gov/?reportingArea=Tyler-Longview-Marshall&stateCode=TX ] PM2.5 PM2.5 Good PM2.5 *Victoria* [ https://www.airnow.gov/?reportingArea=Victoria&stateCode=TX ] Good Good Good Good *Waco-Killeen* [ https://www.airnow.gov/?reportingArea=Waco-Killeen&stateCode=TX ] Ozone Good Good Good An asterisk (*) indicates that an Ozone Action Day is or will be in effect for the indicated region.

Forecast Discussion

*”Wednesday 03/27/2019 “*
Winds may be light enough and/or incoming background levels high enough for ozone to reach “Moderate” or possibly higher in the Houston area, “Moderate” in parts of the Beaumont-Port Arthur and El Paso areas, the lower end of the “Moderate” range in parts of the Austin, Dallas-Fort Worth, San Antonio, and Waco-Killeen areas, and the upper end of the “Good” range in the Tyler-Longview area, with highest concentrations in the afternoon and early evening.

Elevated fine particulate associated with light winds and limited vertical mixing could be enough for the daily PM2.5 AQI to reach the “Moderate” range in parts of the El Paso area, with highest concentrations in the morning and evening.

Should seasonal burning across the southeastern United States and Southern Plains continue, transported smoke could persist over much of the state with the exception of far West Texas, with the heaviest smoke generally along and east of a line from Del Rio to San Angelo to Amarillo. The resulting elevated fine particulate levels could raise the daily PM2.5 AQI to the lower end of the “Moderate” range in parts of the Austin, Dallas-Fort Worth, San Antonio, and Tyler-Longview areas, and the upper end of the “Good” range in general (perhaps with an isolated “Moderate” or two) in the Beaumont-Port Arthur, Brownsville-McAllen, Corpus Christi, Houston, Victoria, and Waco-Killeen areas.

Elsewhere in the state, moderate to strong winds, cooler temperatures, and/or lower incoming background levels should help keep air quality in the “Good” range in most spots.

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