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Daily Maximum Eight-Hour Ozone Averages for December 2014

The table below lists the peak daily maximum eight-hour ozone concentrations measured in December 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 SitePOCDecember 2014POCMonitoring Site
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 218169152731132161324303832252462Ft. Worth Northwest C13/AH302
Keller C172171511182430131871021283730212282Keller C17
Frisco C31/C680118171017232918191417202140322323121Frisco C31/C680
Midlothian OFW C52/A137117171819253018191224293238302522121Midlothian OFW C52/A137
Denton Airport South C56/A163/X157119201118293117191011182642332525121Denton Airport South C56/A163/X157
Arlington Municipal Airport C6111713131722271518519272837292221111Arlington Municipal Airport C61
Dallas North No.2 C63/C6791NANANANANVNV1718711232839312221101Dallas North No.2 C63/C679
Rockwall Heath C691181712202531212122182531403524NANA1Rockwall Heath C69
Grapevine Fairway C70/A301/X1821181781327301621672527393123NV101Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X071118181720283222202120203136332321121Kaufman C71/A304/X071
Granbury C73/C681120231619303413221529252836302626161Granbury C73/C681
Eagle Mountain Lake C75 1182013192830121711920293630222371Eagle Mountain Lake C75
Parker County C76122271825353816221837283440342630111Parker County C76
Cleburne Airport C77/C682118211821273416261737293138312825171Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 316NVNV1221311816510202538302121123Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402115137142029171741426273629212081Dallas Executive Airport C402
Greenville C1006/A19811821121925291920262310103731232191Greenville C1006/A198
Pilot Point C1032119201116252718201719131639302324141Pilot Point C1032
Italy C1044/A3231151718NVNV3222211834283237292520121Italy C1044/A323
Corsicana Airport C1051115NANV25303425221933273936362921131Corsicana Airport C1051
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
Longview C19/A127/C6442201721242223192627186183138331932Longview C19/A127/C644
Tyler Airport Relocated C82119262525232922293223213439403122101Tyler Airport Relocated C82
Karnack C85/AFHP3031121610182120192224198932383318111Karnack C85/AFHP303
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
El Paso-Juarez
El Paso UTEP C12/A125/X1512NV23282025414228NV25293038402731372El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X159124241617293939332928292138372132301Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 119242419223541272324233040412425381Chamizal C41/AH126
Socorro Hueco C49/F31212827272130413832322830NV38402435371Socorro Hueco C49/F312
Skyline Park C72132302730344141393228363244442439411Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N38NV3128334032292724303442404137293BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141NANANV19273632262323NV2538402230341Ivanhoe C414
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
Waco Mazanec C1037118201719243320262938323738323122161Waco Mazanec C1037
Temple Georgia C1045120231319253419272940323638333516151Temple Georgia C1045
Killeen Skylark Field C1047122251319293423313345343741363730161Killeen Skylark Field C1047
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 22651921291926263223393939493425192Beaumont-Downtown C2/A112/C2002
West Orange C9/A14122631522272024222924313840453022202West Orange C9/A141
Port Arthur West C28/A128/A22813062125272027263234424244463124231Port Arthur West C28/A128/A228
Hamshire C64/C65412972525301925273633444641473326271Hamshire C64/C654
SETRPC Port Arthur C6281 N2882222242026252631353939423024271SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C165413282229282330273331394341443225221SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N2851522302125253024293940473723211SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C64312441620241623222827333433392620191SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 12961825302026273332404341473224221Nederland High School C1035
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
Austin Northwest C3/A32221920617232721282532323036323624142Austin Northwest C3/A322
Audubon C3812121817253121282835273037333727151Audubon C38
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
Houston East C1/G31621161213201216182727404235382821172Houston East C1/G316
Houston Aldine C8/AF108/X150 21091717211419232831384441393224202Houston Aldine C8/AF108/X150
Channelview C15/AH115 3991715191418273225293035322828163Channelview C15/AH115
Northwest Harris Co. C26/A110/X154213121724261519283517364640383426172Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP239116NV1520221519NV3929404137372724231Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4512542026251518263539414338373027261Seabrook Friendship Park C45
Houston Bayland Park C53/A146 11081521231316242331394641392824181Houston Bayland Park C53/A146
Conroe Relocated C78/A32111414202725192330353732474142NV26191Conroe Relocated C78/A321
Manvel Croix Park C841NV72226251417223735424642403226231Manvel Croix Park C84
Clinton C403/C304/AH113 31481514131418223124263135341622163Clinton C403/C304/AH113
Houston North Wayside C4051881613141217202925303633342020151Houston North Wayside C405
Houston Monroe C40611441620221113152329313634342617201Houston Monroe C406
Lang C4082971214191216202824344034362720132Lang C408
Houston Croquet C40921072023231415222330404541393024202Houston Croquet C409
Houston Westhollow C41011111152222141725NANANANANANANANANA1Houston Westhollow C410
Houston Texas Avenue C41111061216151117202630283637362419141Houston Texas Avenue C411
Park Place C41611641520201113182032394338392619191Park Place C416
Sheldon C5511 N10111919161518263127303435302727171Sheldon C551
Baytown Wetlands Center C5521 N1781618161217232726313632312221191Baytown Wetlands Center C552
Crosby Library C5531 N1791719151417253031354137372825201Crosby Library C553
La Porte Sylvan Beach C5561 N2181923221520243037294238322725221La Porte Sylvan Beach C556
Mercer Arboretum C5571 N11111723181317243130293938342422191Mercer Arboretum C557
Tom Bass C5581 N1751721211114172328374036352420191Tom Bass C558
Katy Park C5591 N10111318191317232927313836322721131Katy Park C559
Atascocita C5601 N1081720161216212929303735322323191Atascocita C560
Meyer Park C5611 N13131722221518263126344137362924181Meyer Park C561
Bunker Hill Village C5621 N981018191116222526364236352623161Bunker Hill Village C562
Huffman Wolf Road C5631 N169181918131722NANV323731342722161Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N1891918211419243227404140352826201HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N24122126241822324236424844443131241Wallisville Road C617
Danciger C618 1 N21112227261823314148485045423532341Danciger C618
Mustang Bayou C619 1 N30111827281923294543434644413227301Mustang Bayou C619
Texas City 34th St. C620 1 N3010213030202329NVNANANVNANANANANA1Texas City 34th St. C620
UH Moody Tower C6951 N2081722231619263439465043443425191UH Moody Tower C695
U of H-Sugarland C6961 N1582224241215222638434541372623221U of H-Sugarland C696
UH Coastal Center C6971 N2971828281822314137434643413230181UH Coastal Center C697
UH WG Jones Forest C6981 N14131827251822314131334541383825181UH WG Jones Forest C698
UH West Liberty C6991 N25102123231621293835404637423434221UH West Liberty C699
Lynchburg Ferry C1015/A165 1148141923141724272931363631222391Lynchburg Ferry C1015/A165
Lake Jackson C1016 12892826292021264446474743423330341Lake Jackson C1016
Baytown Garth C1017123122024221720NV3332374338392725221Baytown Garth C1017
Galveston 99th St. C1034/A320/X183130103430302219294445444543413534321Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
San Antonio
San Antonio Northwest C2321918422252728303341294240333631172San Antonio Northwest C23
Camp Bullis C5811920220232525303336233939323932171Camp Bullis C58
Calaveras Lake C59115161027262827323725334243333527191Calaveras Lake C59
Heritage Middle School C6221 N17171226262526333843394242343626181Heritage Middle School C622
CPS Pecan Valley C6781 N1211622212121253238303838302924141CPS Pecan Valley C678
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
Corpus Christi-Victoria
Corpus Christi West C4223162830262616194441474643372826272Corpus Christi West C4
Corpus Christi Tuloso C21122162727262815183941464544363026341Corpus Christi Tuloso C21
Victoria C87115143030261719334041434643383128271Victoria C87
Aransas Pass C6591 N18102526192015274638424238332223231Aransas Pass C659
Holly Road C6601 N22132526232316164242444440342625331Holly Road C660
Violet C6641 N23132630232613153839444341332722331Violet C664
Ingleside C6851 N12NVNANANA2618254042444441372825331Ingleside C685
Odem C6861 N23142830232513223738424340343022301Odem C686
Taft C6871 N17193334273118264345495046393127361Taft C687
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
Lower Rio Grande Valley
Mission C43/AP143126101423192013133430303329262729271Mission C43/AP143
Brownsville C80/AGP180128111927232222214240394136302933321Brownsville C80/AGP180
Harlingen Teege C1023133192732272926274942414540363339381Harlingen Teege C1023
AreaMonitoring SitePOCDecember 2014POCMonitoring Site
Laredo Vidaurri C44/AFGP144/P244116111024NV291582421NV3027232024161Laredo Vidaurri C44/AFGP144/P244
POC (Parameter Occurrence Code): a code used to correctly separate data from multiple instruments at one site.
NV - There are not enough valid eight-hour averages for this day (there must be eighteen valid eight-hour averages).
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.