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Peak Daily One-Hour Ozone Averages for December 2016

The table below lists the peak daily one-hour ozone concentrations measured in December 2016 in each community where the TCEQ measures ozone. Concentrations are color-highlighted based on the EPA-defined Air Quality Index colors. (See Interpreting the AQI.) All ozone measurements are in parts per billion, and are truncated to an integer number.

The values that go into this table are calculated at 3:30 am each morning. Therefore, the current day will almost always have very low hourly averages that are not truly representative of local conditions for the day. Because of this, the report does not display the current day's data.

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 using AQI colors
AreaMonitoring SitePOCDecember 2016
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 240302927132118221523
Keller C17240343127132119221624
Frisco C31/C680139393226202321262324
Midlothian OFW C52/A137143393026182629272528
Denton Airport South C56/A163/X157142363129182425252327
Arlington Municipal Airport C61139343424152018242024
Dallas North No.2 C63/C679140373125152115252123
Rockwall Heath C69144403027212321292427
Grapevine Fairway C70/A301/X18214035312816242227204
Kaufman C71/A304/X071144423332222420252527
Granbury C73/C681143393228211923252426
Eagle Mountain Lake C75 141323028162621231524
Parker County C76143383226222523252426
Cleburne Airport C77/C682145423629222330263229
Dallas Hinton St. C401/C60/AH161 336333127212317282025
Dallas Executive Airport C40214034NANANA1922262024
Greenville C1006/A198144413228202319272427
Pilot Point C1032138383527222325282623
Italy C1044/A323145423128212525273029
Corsicana Airport C1051144423428202422243027
AreaMonitoring SitePOCDecember 2016
Longview C19/A127/C644243403632181521283129
Tyler Airport Relocated C82144383434201922272929
Karnack C85/AFHP303143393731161712303128
AreaMonitoring SitePOCDecember 2016
El Paso-Juarez
El Paso UTEP C12/A125/X151233383039394039232035
Ascarate Park SE C37/A332/A172/X159136372540353740272235
Chamizal C41/AH126 131342640394141192029
Socorro Hueco C49/F312134352637353933252334
Skyline Park C72136422940454340272435
BRAVO Big Bend C67/C316/C656/C6913 N40393526324235262531
Ivanhoe C414135342639403938272336
AreaMonitoring SitePOCDecember 2016
Waco Mazanec C1037144423126212527263026
Temple Georgia C1045152423627212729293128
Killeen Skylark Field C1047147393327202627262926
AreaMonitoring SitePOCDecember 2016
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 241363319153931223132
West Orange C9/A141238353319163927242936
Port Arthur West C28/A128/A228144383621194732263440
Hamshire C64/C654143363522204736243234
SETRPC 40 Sabine Pass C640/C1654136272717163523242832
SETRPC 43 Jefferson Co Airport C643139343320184730253134
Nederland High School C1035 137363420184534253135
AreaMonitoring SitePOCDecember 2016
Austin Northwest C3/A322246343325222122252524
Audubon C38147363124212021262723
St. Edwards University C16051 N3828271917161618NANA
AreaMonitoring SitePOCDecember 2016
Houston East C1/G316245202419173012192627
Houston Aldine C8/AF108/X150 242282422182812151822
Channelview C15/AH115 345252521183518223029
Northwest Harris Co. C26/A110/X154241333124193319232726
Hou.DeerPrk2 C35/235/1001/AFH139FP239149282917163517222935
Seabrook Friendship Park C45144363019184226203037
Houston Bayland Park C53/A146 139242119153411202330
Conroe Relocated C78/A321146373426212725263133
Manvel Croix Park C84145352921174321222735
Clinton C403/C304/AH113 342242720191317233133
Houston North Wayside C405139262319172816212529
Houston Monroe C406136262617143414172431
Lang C408233272322173111182223
Houston Croquet C409241262420163813192432
Houston Westhollow C410137252120163315202329
Park Place C416138242218163310182729
Sheldon C5511 N34282524233224273031
Baytown Wetlands Center C5521 N35242517141919192529
West Houston C5541 N39282622193314222630
La Porte Sylvan Beach C5561 N41292918173626213135
Mercer Arboretum C5571 N35333129273427293133
Tom Bass C5581 N38252518153514202432
Katy Park C5591 N34252319152815202627
Atascocita C5601 N38282419163218212630
Meyer Park C5611 N33262417142615192123
Bunker Hill Village C5621 N36242219173212202429
Clear Brook High School C5701 N41322718153921NANANA
Clear Creek High School C5711 N35312417143921NANANA
HRM-3 Haden Road C603/A114 1 N43272820183314223029
Wallisville Road C617 1 N53333424224126273534
Danciger C618 1 N45342420164222212735
Texas City 34th St. C620 1 N47423524234332293541
UH Moody Tower C6951 N41262322183811212832
U of H-Sugarland C6961 N44302623193715212434
UH Coastal Center C6971 N42363021194029243339
UH WG Jones Forest C6981 N44373226203123252832
UH West Liberty C6991 N43302420172821213132
Lynchburg Ferry C1015/A165 14526302017301292531
Lake Jackson C1016 146383721204331233341
Baytown Garth C1017152313020183824253435
Galveston 99th St. C1034/A320/X183145444122204236263443
AreaMonitoring SitePOCDecember 2016
San Antonio
San Antonio Northwest C23246312521212518252617
Camp Bullis C58 150342923222523283024
Calaveras Lake C59149352621213018252524
Heritage Middle School C6221 N49352722203015242624
CPS Pecan Valley C6781 N4426211715251120NANA
AreaMonitoring SitePOCDecember 2016
Corpus Christi-Victoria
Corpus Christi West C4245453322264424212623
Corpus Christi Tuloso C211454330232742222225NA
Victoria C87143352823224220213135
Holly Road C6601 N57564332355729323230
Violet C6641 N5146342824NANANANANA
Ingleside C6851 N46443224294224253037
AreaMonitoring SitePOCDecember 2016
Lower Rio Grande Valley
Mission C43/AP143138313117243720172021
Brownsville C80/AGP180137342816253033202023
Harlingen Teege C1023140332818263835212122
AreaMonitoring SitePOCDecember 2016
Laredo Vidaurri C44/AFGP144/P244138291613232916181818
NA - Data not available.
 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 - 0.054
51 - 100 Not Defined 0.055 - 0.070
101 - 150 0.125 - 0.164 0.071 - 0.085
151 - 200 0.165 - 0.204 0.086 - 0.105
201 - 300 0.205 - 0.404 0.106 - 0.200
301 - 400 0.405 - 0.504 Not Defined
401 - 500 Not Defined 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.