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Peak Daily One-Hour Ozone Averages for February 2016

The table below lists the peak daily one-hour ozone concentrations measured in February 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 SitePOCFebruary 2016
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2363940414448464043485453
Keller C172423940414849463942496154
Frisco C31/C6801393840404547474042445650
Midlothian OFW C52/A1371424141414748474044475446
Denton Airport South C56/A163/X1571434241444849484044535051
Arlington Municipal Airport C611413939404547463942485445
Dallas North No.2 C63/C6791494039394647484042475649
Rockwall Heath C691433839374549464042445144
Grapevine Fairway C70/A301/X1821424041434549484144505952
Kaufman C71/A304/X0711484040364548443943465147
Granbury C73/C6811444243454952474244495456
Eagle Mountain Lake C75 1394041415349454144515451
Parker County C761464342445151464447535856
Cleburne Airport C77/C6821444343435050484345505551
Dallas Hinton St. C401/C60/AH161 3423739394448484041475149
Dallas Executive Airport C402142343738434345384045NA45
Greenville C1006/A1981464140414749474243485453
Pilot Point C10321353941414347474043504948
Italy C1044/A3231444341425044494046485452
Corsicana Airport C10511524240364841443741455449
AreaMonitoring SitePOCFebruary 2016
Longview C19/A127/C6442434640425145454242455251
Tyler Airport Relocated C821454543434852474446535556
Karnack C85/AFHP3031404941424751494243456054
AreaMonitoring SitePOCFebruary 2016
El Paso-Juarez
El Paso UTEP C12/A125/X1512414040364343413939434758
Ascarate Park SE C37/A332/A172/X1591383741384239364037374647
Chamizal C41/AH126 1434243374345403544454857
Socorro Hueco C49/F3121414241434443424445475648
Skyline Park C721444242404342394746414449
BRAVO Big Bend C67/C316/C656/C6913 N47NA47484746454445444850
Ivanhoe C4141424043433842394141384341
AreaMonitoring SitePOCFebruary 2016
Waco Mazanec C10371414242414945494144475552
Temple Georgia C10451424543475151514346505765
Killeen Skylark Field C10471454643435150494345515265
AreaMonitoring SitePOCFebruary 2016
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2343242414836514243504756
West Orange C9/A1412312036424138503941434454
Port Arthur West C28/A128/A2281353043444840554445484962
Hamshire C64/C6541373144464742564447545065
SETRPC Port Arthur C6281 N313140414544554143494546
SETRPC 40 Sabine Pass C640/C16541373142454645574546485046
SETRPC Mauriceville 42 C642/C311/C6651 N36303845413651414246NA50
SETRPC 43 Jefferson Co Airport C6431302535384333473839444352
Nederland High School C1035 1393241435139554344545160
AreaMonitoring SitePOCFebruary 2016
Austin Northwest C3/A3222464844495447564749516374
Audubon C381454542465344494345525873
AreaMonitoring SitePOCFebruary 2016
Houston East C1/G3162424341394943594144664957
Houston Aldine C8/AF108/X150 2424945444843574447555052
Channelview C15/AH115 3334642404041484043384149
Northwest Harris Co. C26/A110/X1542404539404439504143524842
Hou.DeerPrk2 C35/235/1001/AFH139FP2391393937394340493839464150
Seabrook Friendship Park C451363740404542484144454344
Houston Bayland Park C53/A146 13743414045425040NANANA52
Conroe Relocated C78/A3211474945425241604448505448
Manvel Croix Park C841445042454947554448504552
Clinton C403/C304/AH113 3354239404040513739413542
Houston North Wayside C4051343835354035453539503637
Houston Monroe C4061343835363738433940413843
Lang C4082404640394342534144504645
Houston Croquet C4092404538404642494043474048
Houston Westhollow C4101414438424842504045514446
Houston Texas Avenue C4111353836364037493538413641
Park Place C41613338333640364736NA403442
Sheldon C5511 N435246464745664749564954
Baytown Wetlands Center C5521 N243528283129362929342936
Crosby Library C5531 N435346444946694850554956
West Houston C5541 N404337384742503942544542
La Porte Sylvan Beach C5561 N254137374240453840404143
Mercer Arboretum C5571 N333332313530403234363936
Tom Bass C5581 N343836354037463537403538
Katy Park C5591 N293732344237423638453631
Atascocita C5601 N353834343834493536463838
Meyer Park C5611 N353936343835443637433938
Bunker Hill Village C5621 N404539414542524042514245
Huffman Wolf Road C5631 N424942424743774550595151
HRM-3 Haden Road C603/A114 1 N394440404442524243544355
Wallisville Road C617 1 N384842404544524346474557
Danciger C618 1 N384541424545484243504041
Texas City 34th St. C620 1 N363843434846504346484443
UH Moody Tower C6951 N414642404441524143474151
U of H-Sugarland C6961 N363735374441503639503745
UH Coastal Center C6971 N35404042343484244474245
UH WG Jones Forest C6981 N464943425042564447525246
UH West Liberty C6991 N394841414743754447555354
Lynchburg Ferry C1015/A165 1293636374038463838403645
Lake Jackson C1016 1404844475152544647514543
Baytown Garth C101713747404146435143454743NA
Galveston 99th St. C1034/A320/X1831393345465050554647555044
AreaMonitoring SitePOCFebruary 2016
San Antonio
San Antonio Northwest C232464240445345564444515657
Camp Bullis C581484643485546574547565762
Calaveras Lake C591474641445144524346555850
Heritage Middle School C6221 N504641425144514345575652
CPS Pecan Valley C6781 N403633354336433335444443
AreaMonitoring SitePOCFebruary 2016
Corpus Christi-Victoria
Corpus Christi West C42414843464946474647544340
Corpus Christi Tuloso C211394742454644474447504340
Victoria C871445043454944534647645051
Holly Road C6601 N334035414338423744473634
Odem C6861 N384641444742454443534240
Taft C6871 N354136384540424040483734
AreaMonitoring SitePOCFebruary 2016
Lower Rio Grande Valley
Mission C43/AP1431384038443838384139403641
Brownsville C80/AGP1801425342454646464645494140
Harlingen Teege C102314345444646444746NA464043
AreaMonitoring SitePOCFebruary 2016
Laredo Vidaurri C44/AFGP144/P2441414238414341424144434745
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.