Skip to content. | Skip to navigation

Personal tools

Navigation

Daily Maximum Eight-Hour Ozone Averages for January 2015

The table below lists the peak daily maximum eight-hour ozone concentrations measured in January 2015 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 SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 29727302320322730271717201928303637384331303029392622142Ft. Worth Northwest C13/AH302
Keller C17291029282421322530291818192024293336364833312726352929142Keller C17
Frisco C31/C6801111419312625332633282020202026263538325239352929382726161Frisco C31/C680
Midlothian OFW C52/A137110825292918332930282218181924353438414032312726373429301Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571111130332722322834292022222329313741355136353133403531121Denton Airport South C56/A163/X157
Arlington Municipal Airport C6117622292714312829282117171924333237383331322725363326141Arlington Municipal Airport C61
Dallas North No.2 C63/C67918820292419292529271917171823263237334935332626372422101Dallas North No.2 C63/C679
Rockwall Heath C691121819323127363035312220222126293540425741373127402627281Rockwall Heath C69
Grapevine Fairway C70/A301/X1821121326312222352734301921212127263638315136333129383023111Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X07111415203031243429322921NV202125343840443437343125373630281Kaufman C71/A304/X071
Granbury C73/C68119733292826333029261715192225333637414430322926373432121Granbury C73/C681
Eagle Mountain Lake C75 1101131292622332931271620211827323438405031312727333327241Eagle Mountain Lake C75
Parker County C761111039333330383535322122242529404143465937363334414141361Parker County C76
Cleburne Airport C77/C68218630303123323028282016191828353739435035343127383637211Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 387203124193227322919NANV1722233036NANV3734272539242243Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C40216618272414302628271915NV1321303136372933312724353126241Dallas Executive Airport C402
Greenville C1006/A1981131915312925343033282118232428283537435439343030382833201Greenville C1006/A198
Pilot Point C10321131521302623332533272023242228273538294636332931383230121Pilot Point C1032
Italy C1044/A3231111322272923312828282116151424323437422633322627363335191Italy C1044/A323
Corsicana Airport C10511131220292926332931292219182324353939482934NANV29353537301Corsicana Airport C1051
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
Tyler-Longview-Marshall
Longview C19/A127/C64421413112827NV313430311816212631394442484340342936413944252Longview C19/A127/C644
Tyler Airport Relocated C82116121330343233343331211918303137444251NANV353329393940411Tyler Airport Relocated C82
Karnack C85/AFHP3031161412273226353431332317242530324340494041342636373437221Karnack C85/AFHP303
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
El Paso-Juarez
El Paso UTEP C12/A125/X151221314230211823222223222213181830333330283935352729182462El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X159119253727271625242420192315201916232820233526263129282641Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 120294327261423222022241813161825323533253428343229282251Chamizal C41/AH126
Socorro Hueco C49/F312121214234261827262625262616212027283831313934323331223261Socorro Hueco C49/F312
Skyline Park C721223545363224272827252527182125303338362944343537383531111Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N16NVNANANANV362925232525NV1825264141364144303335403629273BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C414117253830272224242321212314172426293525263425293132272861Ivanhoe C414
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
Waco
Waco Mazanec C10371111322293030312928282217151629343840493330342630383540221Waco Mazanec C1037
Temple Georgia C104518615232016262326262116171729333841504627352833414042121Temple Georgia C1045
Killeen Skylark Field C10471131028323238363027282218192031364245525430373137424444261Killeen Skylark Field C1047
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2172011252634323121271816191823374943434741292539413350212Beaumont-Downtown C2/A112/C2002
West Orange C9/A141218158192427312920251818191819334338424441302635393247192West Orange C9/A141
Port Arthur West C28/A128/A2281151910222332313021272320191924344538434546302939413550301Port Arthur West C28/A128/A228
Hamshire C64/C6541152110252637333220252020181723375043454742343038413652301Hamshire C64/C654
SETRPC Port Arthur C6281 N23292028NVNV202010262622212130364841474747353039454051331SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C16541172012232332313023272320201922364234394237322836393440321SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N182013252636333222302220NV1824374640464940302737423647211SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C6431NANANANANANV292819231918161622324236424439302636403347271SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1172111232635323021242020191925NVNV41454443322939413550281Nederland High School C1035
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
Austin
Austin Northwest C3/A322286243022283126202117131415NV2836395242253128313934NV192Austin Northwest C3/A322
Audubon C3819729312734332724231814151528NV3742504926332930383845331Audubon C38
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
Houston-Galveston-Brazoria
Houston East C1/G31621484232015302517181311141320234144414132312236352435122Houston East C1/G316
Houston Aldine C8/AF108/X150 21614826221831271924171615202827434345453435273939314762Houston Aldine C8/AF108/X150
Channelview C15/AH115 31510526229292718221416151627263937343730322635383035123Channelview C15/AH115
Northwest Harris Co. C26/A110/X1542201410262427302620231819152328374140494730292733383241142Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23911242242122282717211314131224293936384234372334342432121Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451166224232732312123141517NV23364237334439402340392828141Seabrook Friendship Park C45
Houston Bayland Park C53/A146 114106261723292717191214NV1926204040464336402536363339151Houston Bayland Park C53/A146
Conroe Relocated C78/A3211241711283031333223271919192630374244525135322835403544221Conroe Relocated C78/A321
Manvel Croix Park C8411267282123302917211414131724274241474938432640373345181Manvel Croix Park C84
Clinton C403/C304/AH113 31310423191029271820111315152322303933333033222728202973Clinton C403/C304/AH113
Houston North Wayside C40511311422221028251822131214152116283936363132212328222851Houston North Wayside C405
Houston Monroe C40611144211620252316181111121220223733414133372133332530111Houston Monroe C406
Lang C408214117252021262215201512121822213938444329272234373136142Lang C408
Houston Croquet C40921287261727272716181213121826204042484937412640363241182Houston Croquet C409
Houston Westhollow C410114129241925272417191315131924284038444132362435343039141Houston Westhollow C410
Houston Texas Avenue C411111742316142624141891111151917334139342933213232233091Houston Texas Avenue C411
Park Place C4161105422131925251517810NV122118374045453439203435243181Park Place C416
Sheldon C5511 N14127242510302821241617161824263737353929302532362937131Sheldon C551
Baytown Wetlands Center C5521 N127220201825251719130121118222423263225261825242025141Baytown Wetlands Center C552
Crosby Library C5531 N13115232415282719231416151724313837414634322533363038171Crosby Library C553
West Houston C5541 N1613824NVNV292418211616142126324241484634382636373239161West Houston C554
La Porte Sylvan Beach C5561 N1564262328313121251716161423253534294335362639372729151La Porte Sylvan Beach C556
Mercer Arboretum C5571 N1715723241929271923151515192426353541413330223033273781Mercer Arboretum C557
Tom Bass C5581 N1054221523252414171111111420233536414133362134312332151Tom Bass C558
Katy Park C5591 N16128232023262118201515122022283533403629332332322835141Katy Park C559
Atascocita C5601 N1311522221426241722131314162227333336373129202931253691Atascocita C560
Meyer Park C5611 N201510262523302720241617162026293939444533312634373242131Meyer Park C561
Bunker Hill Village C5621 N13117231823262516181213121724213837433932372233333037141Bunker Hill Village C562
Huffman Wolf Road C5631 NNVNA7222216NVNANA251718171928343837444739292633373242251Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N14104262113302716221514151526274143414734372638362839141HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N17136303025363324271922202032374743475539383237433648231Wallisville Road C617
Danciger C618 1 N151215302941323423241820152228434545514745442942413849241Danciger C618
Mustang Bayou C619 1 N1567262838313221251716151426384341454441482638383541221Mustang Bayou C619
Texas City 34th St. C620 1 N171332727283432272719191818263650404548444228404129NV161Texas City 34th St. C620
UH Moody Tower C6951 N15NVNV27NV30NV28NV20NVNVNVNV252341474948344023NV37NV39331UH Moody Tower C695
U of H-Sugarland C6961 N1397251629262715NV1114111723294042474537422438333140191U of H-Sugarland C696
UH Coastal Center C6971 N1493222227282719221514141222283525263134392331312433121UH Coastal Center C697
UH WG Jones Forest C6981 N221514282934333122271818182531384347525535302738413850151UH WG Jones Forest C698
UH West Liberty C6991 N16151028302534NV243020201921313946424953NV332839413748321UH West Liberty C699
Lynchburg Ferry C1015/A165 11373242018262616201414121321202928273232352629312427121Lynchburg Ferry C1015/A165
Lake Jackson C1016 11677292838303222231616131727374444504547492941413850221Lake Jackson C1016
Baytown Garth C1017115115252522NV3223271921201929374542475640383035423444231Baytown Garth C1017
Galveston 99th St. C1034/A320/X183112215272538313521NVNANANANANANV494344NV44493040413447231Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
San Antonio
San Antonio Northwest C23210725342431343223222114151428344043564130333033363341182San Antonio Northwest C23
Camp Bullis C581NANV27322630353323231915171430334042513829333238383342191Camp Bullis C58
Calaveras Lake C5919722322737322918221915141225314143525128292836333439121Calaveras Lake C59
Heritage Middle School C6221 N9623302737312818202114141124324242555329302936353441111Heritage Middle School C622
CPS Pecan Valley C6781 N6217262228NV261619181010624293941534426282532342937131CPS Pecan Valley C678
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
Corpus Christi-Victoria
Corpus Christi West C4214412332833242721151815141223373641424235312536393543222Corpus Christi West C4
Corpus Christi Tuloso C21115512333129302921182117131323354344484330302638403744241Corpus Christi Tuloso C21
Victoria C871161014302136312821192018131826384144483939372639383542221Victoria C87
Aransas Pass C6591 NNANANANANANANANANANANANANANANANANANANANANANANANANANV47241Aransas Pass C659
Holly Road C6601 N1105292531272722141514121118373542413833292334353643231Holly Road C660
Violet C6641 N12411332732282519172017121122333942464232272836NVNVNVNA1Violet C664
Odem C6861 N13613322831282820182118141325363940454132272837383743251Odem C686
Taft C6871 N16817353334313325212421191729424245353138353332242721211Taft C687
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
Lower Rio Grande Valley
Mission C43/AP1431106828222223221615202610816NV2735293225192326252833201Mission C43/AP143
Brownsville C80/AGP18018432926313021175152611917293339383727202536283738161Brownsville C80/AGP180
Harlingen Teege C102311591035313835282019243216112336394742433428NV36324044281Harlingen Teege C1023
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
12345678910111213141516171819202122232425262728
Laredo
Laredo Vidaurri C44/AFGP144/P244175193023212524161418246619261838424121242631312532161Laredo 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.