Your 7 Day Hill Country Weather Forecast | Saturday, October 5

SATURDAY 10/5/2019
An Ozone Action Day will be in effect on Saturday for the Houston area. Light winds, warm to hot temperatures, sufficient afternoon sunshine, and elevated incoming background levels could be enough for ozone to reach the upper end of the “Unhealthy for Sensitive Groups” range or possibly higher on the southwest side of the Houston area; the middle to upper end of the “Moderate” range in parts of the Dallas-Fort Worth area; and the lower to middle end of the “Moderate” range in parts of the Beaumont-Port Arthur, San Antonio, and Waco-Killeen areas, with highest concentrations in the afternoon and early evening.

Elevated incoming urban fine particulate background levels associated with continental haze (with patchy residual smoke from seasonal fires across the Mississippi Valley and Southeast U.S., including in East Texas) is expected to continue across portions of East, Southeast, Central, and North Central Texas. Overall, depending on the coverage and intensity of the continuing haze with smoke, the daily PM2.5 AQI is forecast to reach the middle to upper end of the “Moderate” range in parts of the Beaumont-Port Arthur, Houston, and Tyler-Longview areas; the lower to middle end of the “Moderate” range in parts of the Dallas-Fort Worth and Waco-Killeen areas; and possibly the lower end of the “Moderate” range in parts of the Austin area.

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

SUNDAY 10/6/2019
Light winds, warm to hot temperatures, sufficient afternoon sunshine, and elevated incoming background levels could be enough for ozone to reach the lower to middle end of the “Moderate” range in parts of the Dallas-Fort Worth area and possibly the lower end of the “Moderate” range in parts of the Houston, San Antonio, and Waco-Killeen areas, with highest concentrations in the afternoon and early evening.

Elevated incoming urban fine particulate background levels associated with continuing continental haze (with patchy residual smoke from seasonal fires across the Mississippi Valley and Southeast U.S., including in East Texas) is expected to persist across portions of East, Southeast, Central, and North Central Texas at varying intensities. Overall, depending on the coverage and intensity of the continuing haze with smoke, the daily PM2.5 AQI is forecast to reach the middle to upper end of the “Moderate” range in parts of the Beaumont-Port Arthur and Houston areas; the lower to middle end of the “Moderate” range in parts of the Dallas-Fort Worth, Tyler-Longview, and Waco-Killeen areas; and the upper end of the “Good” range (perhaps with an isolated low “Moderate” or two) in parts of the Austin area.

Otherwise and elsewhere in the state, moderate winds, cooler temperatures behind an advancing cold front, and/or lower incoming background levels should help keep air quality in the “Good” range in most spots.

MONDAY 10/7/2019
Continuing continental haze featuring residual smoke from ongoing seasonal fires across portions of the lower Mississippi Valley and Southeast U.S., including in East Texas, is expected to be transported along and ahead of a relatively strong cold front as it advances southward across the state. The resulting elevated fine particulate levels are forecast to be highest along and just ahead of the frontal boundary, while diminishing rapidly behind the front as it progresses from north to south. Overall, depending on the timing, duration, and intensity of the remaining haze with smoke, the daily PM2.5 AQI is forecast to reach the middle to upper end of the “Moderate” range in parts of the Victoria area; the lower to middle end of the “Moderate” range in parts of the Austin, Beaumont-Port Arthur, Corpus Christi, Houston, Laredo, San Antonio, and Tyler-Longview areas; possibly the lower end of the “Moderate” range in parts of the Waco-Killeen area; and the upper end of the “Good” range (perhaps with an isolated low “Moderate” or two) in parts of the Brownsville-McAllen and Dallas-Fort Worth areas, with highest concentrations occuring generally through the first half of the day.

Otherwise and elsewhere in the state, moderate winds, cooler temperatures behind the front, heavy cloud cover, and/or lower incoming background levels should help keep air quality in the “Good” range in most spots.

*Air Quality Index courtesy of Texas Commission on Environmental Quality.