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Daily Maximum Eight-Hour Ozone Averages for January 2022

The table below lists the peak daily maximum eight-hour ozone concentrations measured in January 2022 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 2022POCMonitoring Site
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2283533413026251726283435404630342844312Ft. Worth Northwest C13/AH302
Keller C172263334383125261827293133364728353343282Keller C17
Frisco C31/C6801243329363224272128333232385029343747291Frisco C31/C680
Midlothian OFW C52/A1371273639403624302227263536355130353746231Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571273432383327262029313438404831383247301Denton Airport South C56/A163/X157
Arlington Municipal Airport C611273536413325272027243737375129333446221Arlington Municipal Airport C61
Dallas North No.2 C63/C6791263331363024252125263031324728313345251Dallas North No.2 C63/C679
Rockwall Heath C691233231383524272226NVNV29324826303642241Rockwall Heath C69
Grapevine Fairway C70/A301/X1821283631423427262230313534394429342844311Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711213133413923NV2124323337385226303845291Kaufman C71/A304/X071
Granbury C73/C6811273539403225271329303737414933373945381Granbury C73/C681
Eagle Mountain Lake C75 1293737433528281830313939435133393548371Eagle Mountain Lake C75
Parker County C761293641413527281632NV3840454833374243381Parker County C76
Cleburne Airport C77/C6821283739443727301828293837465633394248301Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3243125323123211824192226253925272339193Dallas Hinton St. C401/C60/AH161
Greenville C1006/A198123333443NV24302326353837435727324048281Greenville C1006/A198
Pilot Point C1032128373040343029NANANANANANV4830383848321Pilot Point C1032
Italy C1044/A3231253437403823292025303437405430363948291Italy C1044/A323
Corsicana Airport C10511293539443526322524353539385827374150351Corsicana Airport C1051
AreaMonitoring SitePOCJanuary 2022POCMonitoring Site
Longview C19/A127/C64422431374640323025283436NV424926324252342Longview C19/A127/C644
Tyler Airport Relocated C821273641494529333029NV4043495829354351341Tyler Airport Relocated C82
Karnack C85/AFHP3031242837464531322530363643474235314050351Karnack C85/AFHP303
AreaMonitoring SitePOCJanuary 2022POCMonitoring Site
El Paso-Juarez
Ascarate Park SE C37/A332/A172/X15914236272826212135303032222132NVNANANV261Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 1413526323033293929273129263634332929331Chamizal C41/AH126
Socorro Hueco C49/F3121413927322729303933353027263539332729321Socorro Hueco C49/F312
Skyline Park C721433537413328394234323729244338343736401Skyline Park C72
Ivanhoe C414/F5141383231312326283829293125223335282826301Ivanhoe C414/F514
Ojo De Agua C1021/FG121/FG2211NANANANANANANV41354130373341413834NVNA1Ojo De Agua C1021/FG121/FG221
AreaMonitoring SitePOCJanuary 2022POCMonitoring Site
Waco Mazanec C10371293639413323281823312636435433384248331Waco Mazanec C1037
Temple Georgia C10451303735423827241926301935455634384347371Temple Georgia C1045
Killeen Skylark Field C10471374136454127252127342339455435384450411Killeen Skylark Field C1047
AreaMonitoring SitePOCJanuary 2022POCMonitoring Site
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2273136444043262824333634425930334147402Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412252534393939273221353535405827283844402West Orange C9/A141
Port Arthur West C28/A128/A228127293543394229293133353641NANANANANV391Port Arthur West C28/A128/A228
Hamshire C64/C6541272936444043283023353535385730324248401Hamshire C64/C654
SETRPC Port Arthur C6281 N293038413645333526373737446430NVNANANA1SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C16541253335453942293424363739476330354146421SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N313238434444293627343941456332NVNANANA1SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C6431263135423742263022343534425830324044391SETRPC 43 Jefferson Co Airport C643
AreaMonitoring SitePOCJanuary 2022POCMonitoring Site
Austin North Hills Drive C3/A3222253733414128201526312430485236373446352Austin North Hills Drive C3/A322
Audubon C381243738454130231426321527425135363746361Audubon C38
AreaMonitoring SitePOCJanuary 2022POCMonitoring Site
Houston East C1/G3162NVNANV423834212221262419304929313245382Houston East C1/G316
Houston Aldine C8/AF108/X150 2NANANV3936362022203130263445NANV2739302Houston Aldine C8/AF108/X150
Channelview C15/AH115 3293136363638232021312718304431322738343Channelview C15/AH115
Northwest Harris Co. C26/A110/X1542303236434338212020352726385233334044322Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23913134NV434241262621323028344931304044361Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451222928353234232218292927NV3930303739311Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1303336443944252522342816384832334043371Houston Bayland Park C53/A146
Conroe Relocated C78/A3211333641475040292424383740425835364444111Conroe Relocated C78/A321
Manvel Croix Park C8412631304136NV24222030281640503233NVNANA1Manvel Croix Park C84
Clinton C403/C304/AH113 3NANV30NV28351922183328152238292832NV273Clinton C403/C304/AH113
Houston North Wayside C405/C10331252832343134211917322916263828292737111Houston North Wayside C405/C1033
Houston Monroe C4061252625363433212320252520334330303538341Houston Monroe C406
Lang C4082283131393736162120262518334631323338322Lang C408
Houston Croquet C4092283032403742252422312321384831324241372Houston Croquet C409
Houston Westhollow C410/C30031222326323131171715271917324122263435291Houston Westhollow C410/C3003
Park Place C4161262829393435222220282420314430303040341Park Place C416
Houston Harvard Street C4171313133423835172522312718354431303641361Houston Harvard Street C417
Sheldon C5511 N263238393440242021363424344533333340331Sheldon C551
Baytown Wetlands Center C5521 N223235353636242017323225293825293737231Baytown Wetlands Center C552
Crosby Library C5531 N263238353737231920323227314330323839291Crosby Library C553
West Houston C5541 N28343643424018NANANV3124385134344242301West Houston C554
La Porte Sylvan Beach C5561 N213230303034222315283025283226293131301La Porte Sylvan Beach C556
Mercer Arboretum C5571 N283035383837221919343325344630313440141Mercer Arboretum C557
Tom Bass C5581 N253029423637242219302824354730313841351Tom Bass C558
Katy Park C5591 N273134383833181918342918324432313737291Katy Park C559
Atascocita C5601 N252933383433231817313226304329303139281Atascocita C560
Meyer Park C5611 N263035394037211818343224374731323541271Meyer Park C561
Bunker Hill Village C5621 N283132403740201919332715364631313640331Bunker Hill Village C562
Huffman Wolf Road C5631 N283138404040242121343431354731324043331Huffman Wolf Road C563
UH Moody Tower C6951 N273029423737212322322722374831333642351UH Moody Tower C695
UH WG Jones Forest C6981 N3135NVNV47412522NANV3437NVNVNANANANV141UH WG Jones Forest C698
Lynchburg Ferry C1015/A165 1252934363531222119273017264528273238351Lynchburg Ferry C1015/A165
Lake Jackson C1016 130333645NV46302925353630464734344645351Lake Jackson C1016
Baytown Garth C10171303340434544282925373730345033344447351Baytown Garth C1017
Galveston 99th St. C1034/A320/X183129363645NANV3435264039335254NANANANVNA1Galveston 99th St. C1034/A320/X183
UH Smith Point C16061 N283839404444293121373634424633344144351UH Smith Point C1606
Oyster Creek C1607 1 N323439484148333528373936504737NVNANANA1Oyster Creek C1607
Liberty Sam Houston Library C16261 N333442474746272827NVNA42466133384549401Liberty Sam Houston Library C1626
AreaMonitoring SitePOCJanuary 2022POCMonitoring Site
San Antonio
San Antonio Northwest C232283735384335211327352428414539384341372San Antonio Northwest C23
Camp Bullis C58 1283938424538241428362730474840404344381Camp Bullis C58
Calaveras Lake C59128343539423420102731NVNV424438374142391Calaveras Lake C59
Heritage Middle School C6221 N29363940443519927322931504939394141391Heritage Middle School C622
AreaMonitoring SitePOCJanuary 2022POCMonitoring Site
Corpus Christi-Victoria
Corpus Christi West C4232363941424118122234412741NV37394343372Corpus Christi West C4
Corpus Christi Tuloso C211303639404143191024334034434038414444401Corpus Christi Tuloso C21
Victoria C8713132333940NV1516223332NVNANANANANANANA1Victoria C87
AreaMonitoring SitePOCJanuary 2022POCMonitoring Site
Lower Rio Grande Valley
Mission C43/AP1431393440384650211623283732374037404239461Mission C43/AP143
Harlingen Teege C10231313541384037191923304229414138394640401Harlingen Teege C1023
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 - 0.054
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
  • The AQI for ozone is based on either the peak eight-hour running average since midnight OR the peak one-hour measurement since midnight.

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, 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.