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Peak Daily One-Hour Ozone Averages for December 2014

The table below lists the peak daily one-hour ozone concentrations measured in December 2014 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 2014POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 22019161932371523923283442362928991018222Ft. Worth Northwest C13/AH302
Keller C1721917152129351522121524314033252611101116232Keller C17
Frisco C31/C68012018121928342024252231294335272516111219261Frisco C31/C680
Midlothian OFW C52/A1371192122232836222416323236403230261713812281Midlothian OFW C52/A137
Denton Airport South C56/A163/X15712124152236361923151628344537293014191322261Denton Airport South C56/A163/X157
Arlington Municipal Airport C611191615212732192513253233403326251510711261Arlington Municipal Airport C61
Dallas North No.2 C63/C6791NANANANA273320241315303141352627157716281Dallas North No.2 C63/C679
Rockwall Heath C691242014242836242837222937453828NA137179291Rockwall Heath C69
Grapevine Fairway C70/A301/X18212119131731351824111032334234292517111216231Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711231918252937252326262437413527241471211251Kaufman C71/A304/X071
Granbury C73/C68111925192333381626323628314033303019161724231Granbury C73/C681
Eagle Mountain Lake C75 1192217233235132115212533393426279111422221Eagle Mountain Lake C75
Parker County C7612431222840441725304033394437313416151927251Parker County C76
Cleburne Airport C77/C68212023212431402132284531364234302920111326271Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 319167182636202310152829423324241711713273Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C40212216121823342023112029313832252511NANA7271Dallas Executive Airport C402
Greenville C1006/A1981252616232936212340291516423426241361411271Greenville C1006/A198
Pilot Point C10321202214193031212129222019433327281691423241Pilot Point C1032
Italy C1044/A32312119231528362528244332374032302315111010291Italy C1044/A323
Corsicana Airport C1051119NA182833392829283836424140332416111520261Corsicana Airport C1051
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644227212429252822344422821384038221181627272Longview C19/A127/C644
Tyler Airport Relocated C821283129272532263439312643434136241371531311Tyler Airport Relocated C82
Karnack C85/AFHP3031261913262528213137221011434238221391420261Karnack C85/AFHP303
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X15121330332132444537383245404043363938363739402El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15913131241736404139343536354142343836293334341Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 12832342132364532323136404244393441343839421Chamizal C41/AH126
Socorro Hueco C49/F31213433351937444242363741434143314041393439391Socorro Hueco C49/F312
Skyline Park C7214037343038434345383645434546364343383944421Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N4137353536423931302836394641434337434539443BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141NANA241832403831263234374043303338283437371Ivanhoe C414
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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Waco
Waco Mazanec C103711921202429362429384637404434342519141211321Waco Mazanec C1037
Temple Georgia C104512025192331402031375038414335373017221927321Temple Georgia C1045
Killeen Skylark Field C104712427172233402536415139424838413419202335311Killeen Skylark Field C1047
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2326322531243030433647424552392826182527242Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412335272429212727373438434447402525171927272West Orange C9/A141
Port Arthur West C28/A128/A2281338342829253133434046444749332731222627301Port Arthur West C28/A128/A228
Hamshire C64/C6541328362731233133463849494449373036323327331Hamshire C64/C654
SETRPC Port Arthur C6281 N3111332527253131353640424448352634NA1729321SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C165413710313231303532374042464646362934302729291SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N376242533242832393438474549422825151828251SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C643128723242620262836363736384027242519NANANA1SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1358262932243034444144454649362829242327281Nederland High School C1035
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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Austin
Austin Northwest C3/A32222221131828342433344137374236412918152729262Austin Northwest C3/A322
Audubon C3812523141831362334364331374436423219162934261Audubon C38
Fayette County C6012 NNANANANANANANANANANANANANANANANANANANANANA2Fayette County C601
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G31621910221725171825383647503840312424242116352Houston East C1/G316
Houston Aldine C8/AF108/X150 21711252326182330424247514541382728312921302Houston Aldine C8/AF108/X150
Channelview C15/AH115 32011231923182032423745373838303324262623343Channelview C15/AH115
Northwest Harris Co. C26/A110/X15421414233028182135432545524641372828271823292Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP2391238202324197426483445454039312933252520311Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451297292827192133524247464241343641293120341Seabrook Friendship Park C45
Houston Bayland Park C53/A146 12111272825171833344246504341332828242220321Houston Bayland Park C53/A146
Conroe Relocated C78/A32112016243131182638434645554746393029291725341Conroe Relocated C78/A321
Manvel Croix Park C8413010262928242029524750504642343134213020321Manvel Croix Park C84
Clinton C403/C304/AH113 3239202120181930403233363936292624262421303Clinton C403/C304/AH113
Houston North Wayside C4051139232118141827383437423736252325252518271Houston North Wayside C405
Houston Monroe C4061217232524181423373241413635282128202415271Houston Monroe C406
Lang C40822110162421162128373641454039302721181618242Lang C408
Houston Croquet C40922710312826201632344346494540322830202522332Houston Croquet C409
Houston Westhollow C41012013252925201934NANANANANANANANANANANANANA1Houston Westhollow C410
Houston Texas Avenue C4111209202320151828363435394137302525232118291Houston Texas Avenue C411
Park Place C4161248242626191427333846474140302229172216311Park Place C416
Sheldon C5511 N2213261923192031383842373836303226262821311Sheldon C551
Baytown Wetlands Center C5521 N2110242019141828363134393434262727202318271Baytown Wetlands Center C552
Crosby Library C5531 N2410242320161931373842443939302930272521311Crosby Library C553
La Porte Sylvan Beach C5561 N2611252626182132414045474140303532243022331La Porte Sylvan Beach C556
Mercer Arboretum C5571 N1212242923142032404137454237272527261220261Mercer Arboretum C557
Tom Bass C5581 N238232622191525373441433936272629192515281Tom Bass C558
Katy Park C5591 N1413172322151930383737434034302523212921231Katy Park C559
Atascocita C5601 N1710232521142027364039413737272628226218261Atascocita C560
Meyer Park C5611 N1415203126162033413741474238342624251621281Meyer Park C561
Bunker Hill Village C5621 N1711152622151931373840464037302726202219221Bunker Hill Village C562
Huffman Wolf Road C5631 N241023222315202933839423435292426232518281Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N2312262324212132463749474438333230292621351HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N3014322630212439494448524647363535353625401Wallisville Road C617
Danciger C618 1 N3412272928212539495551524943383542303328311Danciger C618
Mustang Bayou C619 1 N3214233130222734615046504643353037313228321Mustang Bayou C619
Texas City 34th St. C620 1 N321337333226253615NANA50NANANANANANANANANA1Texas City 34th St. C620
UH Moody Tower C6951 N2912282927222134444952554745363135252522361UH Moody Tower C695
U of H-Sugarland C6961 N2411343025201732324745484439302834231822301U of H-Sugarland C696
UH Coastal Center C6971 N319272929232642524347494443353633202420251UH Coastal Center C697
UH WG Jones Forest C6981 N1415233329192537453744544743422927271825321UH WG Jones Forest C698
UH West Liberty C6991 N3311272628182434424648514144375335283125361UH West Liberty C699
Lynchburg Ferry C1015/A165 12110212326171931393344403938302920182516301Lynchburg Ferry C1015/A165
Lake Jackson C1016 13211472930232331525851514745353743333429341Lake Jackson C1016
Baytown Garth C101712713302426202227413842464041323031313222331Baytown Garth C1017
Galveston 99th St. C1034/A320/X18313413702732272237495048484546394338373727331Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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San Antonio
San Antonio Northwest C232232072629313135414937464736433625203838302San Antonio Northwest C23
Camp Bullis C581222142429312835394736434635463623233737301Camp Bullis C58
Calaveras Lake C5911819153230343337444337454836422922173333221Calaveras Lake C59
Heritage Middle School C6221 N2119173231303238464841454837422822163434221Heritage Middle School C622
CPS Pecan Valley C6781 N1414142526252430404336424333372717143028201CPS Pecan Valley C678
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C423218333628351825494849484539333238343128262Corpus Christi West C4
Corpus Christi Tuloso C2113219303127371924454848474539333039362631261Corpus Christi Tuloso C21
Victoria C8712216373628202041464549504740413234132629351Victoria C87
Aransas Pass C6591 N2813282821331932534244444235292931NANANANA1Aransas Pass C659
Holly Road C6601 N3014323124321921474646454236292936322925231Holly Road C660
Violet C6641 N3115343525371620454745454236302538332129211Violet C664
Ingleside C6851 N1813NANANA362032474647474339322937353128291Ingleside C685
Odem C6861 N3416323526331730444545454336332635332431251Odem C686
Taft C6871 N2721364130402139535251514941343039373031301Taft C687
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP14313011183221251716403234353127333130221524161Mission C43/AP143
Brownsville C80/AGP18013012223524272626484241433732313434312620231Brownsville C80/AGP180
Harlingen Teege C102313920313930332629554645474438354142342330261Harlingen Teege C1023
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P2441261413311940211233283034302618272461724261Laredo Vidaurri C44/AFGP144/P244
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 - 0.059
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.