Skip to content. | Skip to navigation

Personal tools


Daily Maximum Eight-Hour Ozone Averages for October 2014

The table below lists the peak daily maximum eight-hour ozone concentrations measured in October 2014 in each community where the TCEQ measures ozone. Concentrations that are rated Moderate or higher are color-highlighted based on the EPA-defined Air Quality Index colors. (See Interpreting the AQI.) All ozone measurements are in parts per billion.

Use the selection boxes below to customize this report. You may select a different month, a different year, a different report format, and whether or not to include time on the report. Click on the Generate Report button once you have made your selections.

Month:Year:Report Format: Include time:
Include time
Highlight with AQI colors
AreaMonitoring SitePOCOctober 2014
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 224
Keller C17221
Frisco C31/C680125
Midlothian OFW C52/A137123
Denton Airport South C56/A163/X157124
Arlington Municipal Airport C61121
Rockwall Heath C69121
Grapevine Fairway C70/A301/X182124
Kaufman C71/A304/X071119
Eagle Mountain Lake C75 122
Parker County C76116
Cleburne Airport C77/C682123
Dallas Hinton St. C401/C60/AH161 319
Dallas Executive Airport C402122
Greenville C1006/A198119
Pilot Point C1032124
Italy C1044/A323120
Corsicana Airport C1051120
AreaMonitoring SitePOCOctober 2014
Longview C19/A127/C644214
Tyler Airport Relocated C82120
Karnack C85/AFHP30319
AreaMonitoring SitePOCOctober 2014
El Paso-Juarez
El Paso UTEP C12/A125/X151225
Ascarate Park SE C37/A332/A172/X159112
Chamizal C41/AH126 125
Socorro Hueco C49/F312112
Skyline Park C72114
BRAVO Big Bend C67/C316/C656/C6913 N34
AreaMonitoring SitePOCOctober 2014
Waco Mazanec C1037117
Temple Georgia C1045119
Killeen Skylark Field C1047119
AreaMonitoring SitePOCOctober 2014
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 211
West Orange C9/A141213
Port Arthur West C28/A128/A228110
Hamshire C64/C654110
SETRPC Port Arthur C6281 N9
SETRPC 40 Sabine Pass C640/C1654112
SETRPC Mauriceville 42 C642/C311/C6651 N2
SETRPC 43 Jefferson Co Airport C643114
Nederland High School C1035 113
AreaMonitoring SitePOCOctober 2014
Austin Northwest C3/A322215
Audubon C38119
Fayette County C6012 N16
Dripping Springs School C6141 N17
CAPCOG McKinney Roughs C6841 N10
CAPCOG Lake Georgetown C6901 N20
Gorzycki Middle School C16031 N1
Lockhart C16041 N11
CAPCOG San Marcos Staples Road C16751 N14
CAPCOG Hutto College Street C66021 N6
AreaMonitoring SitePOCOctober 2014
Houston East C1/G31627
Houston Aldine C8/AF108/X150 24
Channelview C15/AH115 36
Northwest Harris Co. C26/A110/X15427
Hou.DeerPrk2 C35/235/1001/AFH139FP23918
Seabrook Friendship Park C4517
Houston Bayland Park C53/A146 15
Conroe Relocated C78/A321112
Manvel Croix Park C8415
Clinton C403/C304/AH113 34
Houston North Wayside C40514
Houston Monroe C40615
Lang C40826
Houston Croquet C40926
Houston Westhollow C41015
Houston Texas Avenue C41115
Park Place C41617
Sheldon C5511 N6
Baytown Wetlands Center C5521 N7
Crosby Library C5531 N4
West Houston C5541 N7
La Porte Sylvan Beach C5561 N9
Mercer Arboretum C5571 N5
Tom Bass C5581 N1
Katy Park C5591 N9
Atascocita C5601 N4
Meyer Park C5611 N5
Bunker Hill Village C5621 N7
Huffman Wolf Road C5631 N2
HRM-3 Haden Road C603/A114 1 N9
Wallisville Road C617 1 N7
Danciger C618 1 N6
Mustang Bayou C619 1 N11
Texas City 34th St. C620 1 N7
UH Moody Tower C6951 N13
U of H-Sugarland C6961 N8
UH Coastal Center C6971 N11
UH WG Jones Forest C6981 N6
UH West Liberty C6991 N11
Lynchburg Ferry C1015/A165 112
Lake Jackson C1016 110
Baytown Garth C101717
Galveston 99th St. C1034/A320/X183116
AreaMonitoring SitePOCOctober 2014
San Antonio
San Antonio Northwest C23217
Camp Bullis C58120
Calaveras Lake C59115
Elm Creek Elementary C5011 N17
Fair Oaks Ranch C5021 N19
Bulverde Elementary C5031 N17
New Braunfels Airport C5041 N15
City of Garden Ridge C5051 N16
Seguin Outdoor Learning Center C5061 N13
Heritage Middle School C6221 N20
CPS Pecan Valley C6781 N14
AreaMonitoring SitePOCOctober 2014
Corpus Christi-Victoria
Corpus Christi West C4223
Corpus Christi Tuloso C21119
Victoria C87113
Inez C6091 N10
Coleto C6241 N10
Aransas Pass C6591 N19
Holly Road C6601 N18
Violet C6641 N13
Ingleside C6851 N21
Odem C6861 N21
Taft C6871 N25
Cuero C16021 N16
AreaMonitoring SitePOCOctober 2014
Lower Rio Grande Valley
Mission C43/AP143114
Brownsville C80/AGP180112
AreaMonitoring SitePOCOctober 2014
Laredo Vidaurri C44/AFGP144/P244112
POC (Parameter Occurrence Code): a code used to correctly separate data from multiple instruments at one site.
 N - Data from this instrument does not meet EPA quality assurance criteria and cannot be used for regulatory purposes.

Interpreting the AQI

Air Quality Index

Each NAAQS pollutant has a separate AQI scale, with an AQI rating of 100 corresponding to the concentration of the Federal Standard for that pollutant. Additional information about the AQI and how it can be used is available from the EPA's AirNow web site.

Place your mouse pointer over the scale displayed above to view information about the Air Quality Index, and each of the rating levels.

The actual index calculation is different for each parameter measured and is specified by the EPA. The following table shows the various breakpoints used in calculating the AQI.

AQI Breakpoint Definitions
AQI Range 1hr Ozone
in ppm
8hr Ozone
in ppm
0 - 50 Not Defined 0 - 0.059
51 - 100 Not Defined 0.06 - 0.075
101 - 150 0.125 - 0.164 0.076 - 0.095
151 - 200 0.165 - 0.204 0.096 - 0.115
201 - 300 0.205 - 0.404 0.116 - 0.374
301 - 400 0.405 - 0.504 Not Defined
401 - 500 0.505 - 0.604 Not Defined
500+ Not Defined Not Defined

PLEASE NOTE:  This data has not been verified by the TCEQ and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from TCEQ ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.

Following EPA reporting guidelines, negative values may be displayed in our hourly criteria air quality data beginning 1/1/2013, down to the negative of the EPA listed Method Detection Limit (MDL) for the particular instrument that made the measurements. The reported concentrations can be negative due to zero drift in the electronic instrument output, data logger channel, or calibration adjustments to the data. Prior to 1/1/2013, slightly negative values were automatically set to zero.