Daily Maximum Eight-Hour Ozone Averages for February 2012

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Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
Dallas-Fort Worth
	Ft. Worth Northwest C13/AH302	2	30	24	19	25	30	25	22	21	27	25	30	18
	Keller C17	2	37	33	21	29	32	33	27	23	32	28	31	20
	Frisco C31/C680	1	28	33	21	28	31	33	28	24	30	24	31	23
	Midlothian OFW C52/A137	1	35	32	23	27	31	20	29	20	37	31	31	18
	Denton Airport South C56/A163/X157	1	28	27	21	27	30	32	30	22	24	24	30	21
	Arlington Municipal Airport C61	1	35	33	21	28	31	19	29	21	34	29	31	18
	Dallas North No.2 C63/C679	1	27	30	21	27	31	29	28	21	30	26	31	22
	Rockwall Heath C69	1	26	32	20	28	30	34	31	27	34	26	31	22
	Grapevine Fairway C70/A301/X182	1	34	29	20	28	31	32	29	23	27	26	31	22
	Kaufman C71/A304/X071	1	33	28	22	23	29	31	31	26	35	29	31	20
	Granbury C73/C681	1	39	21	24	30	33	30	35	28	36	34	34	19
	Eagle Mountain Lake C75	1	36	30	22	29	32	32	27	23	30	29	31	18
	Parker County C76	1	42	30	25	33	36	38	32	26	38	34	37	25
	Cleburne Airport C77/C682	1	37	27	21	25	30	23	31	24	37	32	31	15
	Dallas Hinton St. C401/C60/AH161	3	28	28	19	28	31	24	25	19	26	24	31	22
	Dallas Executive Airport C402	1	34	30	20	28	31	23	NA	NA	NV	28	31	20
	Greenville C1006/A198	1	21	32	21	27	29	32	33	27	34	26	30	21
	Pilot Point C1032	1	28	33	22	28	31	34	32	23	25	26	30	22
	Italy C1044/A323	1	34	28	23	23	30	30	33	24	38	32	32	18
	Corsicana Airport C1051	1	35	26	23	23	29	30	34	25	37	31	33	20


Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
Tyler-Longview-Marshall
	Longview C19/A127/C644	2	34	17	23	25	27	31	25	34	38	30	32	22
	Tyler Airport Relocated C82	1	38	24	27	26	31	33	32	32	43	34	34	22
	Karnack C85/AFHP303	1	34	24	24	25	27	30	30	37	35	26	33	26


Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
El Paso-Juarez
	El Paso UTEP C12/A125/X151	2	39	34	45	36	39	33	36	30	32	44	36	NA
	Ascarate Park SE C37/A332/A172/X159	1	39	34	39	37	39	35	36	31	29	39	36	NA
	Chamizal C41/AH126	1	35	NV	NA	NA	NA	NA	NA	NA	NV	37	29	NA
	Socorro C49/F312	1	33	34	42	36	37	35	36	NV	NA	NA	NA	NA
	Skyline Park C72	1	41	46	49	37	38	36	37	34	36	41	37	NA
	BRAVO Big Bend C67/C316/C656/C691	3 ^N	NV	49	43	37	40	38	42	35	36	43	43	31
	Ivanhoe C414	1	33	36	37	33	36	29	34	26	31	37	32	NA
	Cd Juarez 20-30 Club C662	1 ^N	29	29	37	26	NV	NA	NV	21	NV	NA	NA	NA
	Cd Juarez Delphi C663	1 ^N	33	34	39	35	36	34	33	27	28	39	33	NA


Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
Waco
	Waco Mazanec C1037	1	37	27	24	23	30	30	37	22	39	37	32	20
	Killeen Skylark Field C1047	1	38	20	25	26	32	32	40	28	39	40	33	22


Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
Beaumont-Port Arthur
	Beaumont-Downtown C2/A112/C2002	2	28	23	28	26	17	27	26	40	35	30	35	31
	West Orange C9/A141	2	31	26	32	27	19	25	25	38	37	28	34	30
	Port Arthur West C28/A128/A228	1	25	18	25	22	18	NV	NA	NV	35	30	34	NA
	Hamshire C64/C654	1	31	28	31	28	19	30	27	43	41	37	36	31
	SETRPC Port Arthur C628	1 ^N	39	34	41	37	26	33	35	50	48	44	44	38
	SETRPC 40 Sabine Pass C640/C1654	1	33	28	32	28	20	28	27	41	35	35	36	29
	SETRPC Mauriceville 42 C642/C311/C665	1 ^N	26	25	30	26	18	25	25	37	36	29	32	29
	SETRPC 43 Jefferson Co Airport C643	1	31	25	28	23	18	26	23	37	37	30	32	29
	Nederland High School C1035	1	28	25	28	25	17	26	25	37	36	30	33	28


Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
Austin
	Austin Northwest C3/A322	2	33	17	21	26	29	24	31	27	33	37	30	22
	Audubon C38	1	37	25	24	28	32	30	40	31	38	40	34	24


Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
Houston-Galveston-Brazoria
	Houston East C1/G316	2	24	18	20	19	21	24	20	28	NA	NA	NA	NA
	Houston Aldine C8/AF108/X150	2	24	18	16	22	23	26	25	36	35	25	33	29
	Channelview C15/AH115	3	19	19	15	24	26	28	29	39	32	30	34	30
	Northwest Harris Co. C26/A110/X154	2	28	14	20	22	27	30	32	37	34	32	34	30
	Hou.DeerPrk2 C35/235/1001/AFH139FP239	1	22	23	21	22	22	27	27	36	34	24	30	27
	Seabrook Friendship Park C45	1	24	28	21	23	21	29	28	36	36	28	32	30
	Houston Bayland Park C53/A146	1	27	20	19	19	22	24	22	34	32	25	30	28
	Conroe Relocated C78/A321	1	24	19	22	23	26	29	29	37	36	30	34	29
	Houston Regional Office C81	1	30	21	22	23	21	23	23	36	29	24	31	29
	Manvel Croix Park C84	1	30	23	23	24	23	27	24	37	37	29	33	29
	Clinton C403/C304/AH113	3	16	20	19	19	21	24	26	37	29	25	32	28
	Houston North Wayside C405	1	20	16	15	20	23	24	26	34	31	NA	NA	NA
	Houston Monroe C406	1	27	24	22	22	21	23	20	31	32	22	29	28
	Lang C408	2	23	15	17	17	21	24	20	29	28	24	29	28
	Houston Croquet C409	2	30	21	21	21	22	23	21	36	33	27	31	28
	Houston Westhollow C410	1	28	17	19	20	24	27	26	36	31	29	33	28
	Houston Texas Avenue C411	1	20	17	18	18	20	22	22	32	27	19	29	27
	Park Place C416	1	25	22	20	20	19	22	21	33	33	20	30	27
	Sheldon C551	1 ^N	22	19	13	23	26	31	30	40	36	29	33	30
	Baytown Wetlands Center C552	1 ^N	17	23	19	24	23	31	29	39	35	28	33	29
	Crosby Library C553	1 ^N	26	23	21	25	25	30	29	37	38	33	32	29
	West Houston C554	1 ^N	27	16	17	19	25	27	26	34	31	29	34	29
	La Porte Sylvan Beach C556	1 ^N	19	24	17	20	20	26	25	33	34	23	31	29
	Mercer Arboretum C557	1 ^N	24	18	15	21	24	30	30	38	39	26	34	29
	Tom Bass C558	1 ^N	26	22	22	22	21	23	20	32	35	24	30	27
	Katy Park C559	1 ^N	25	16	17	19	25	27	30	34	29	29	33	27
	Atascocita C560	1 ^N	22	21	16	22	24	29	28	37	37	27	33	30
	Meyer Park C561	1 ^N	26	16	18	21	27	30	29	35	35	29	33	29
	Bunker Hill Village C562	1 ^N	27	17	17	20	23	27	25	36	32	27	33	29
	Huffman Wolf Road C563	1 ^N	NA	NV	22	25	25	31	29	37	37	34	32	29
	Clear Brook High School C570	1 ^N	25	26	26	24	25	31	29	38	36	23	33	32
	Clear Creek High School C571	1 ^N	25	28	24	27	26	32	31	44	39	28	37	34
	Clear Lake High School C572	1 ^N	24	27	24	25	24	33	32	41	39	26	35	32
	HRM-3 Haden Road C603/A114	1 ^N	NV	14	17	18	21	26	24	31	29	21	28	27
	Wallisville Road C617	1 ^N	21	26	24	28	26	32	33	41	36	35	35	32
	Danciger C618	1 ^N	29	25	25	22	28	30	33	41	39	36	37	31
	Mustang Bayou C619	1 ^N	26	NV	25	25	23	34	27	42	37	31	35	32
	Texas City 34th St. C620	1 ^N	28	28	24	29	27	32	32	42	40	35	39	33
	UH Moody Tower C695	1 ^N	33	26	26	26	25	28	27	40	36	29	NV	32
	U of H-Sugarland C696	1 ^N	31	23	24	23	26	28	21	36	NV	30	NV	31
	UH Coastal Center C697	1 ^N	29	27	26	27	23	31	32	41	37	29	NV	32
	UH WG Jones Forest C698	1 ^N	30	20	20	24	28	33	31	39	38	34	NV	30
	UH West Liberty C699	1 ^N	27	24	23	26	25	32	29	39	38	35	NV	29
	Lynchburg Ferry C1015/A165	1	21	24	19	22	24	26	23	35	34	26	30	29
	Lake Jackson C1016	1	26	24	22	22	22	28	31	41	36	33	31	30
	Galveston 99th St. C1034/A320/X183	1	28	24	22	25	21	26	27	37	38	31	34	26


Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
San Antonio
	San Antonio Northwest C23	2	29	22	25	28	31	25	29	32	38	31	35	26
	Camp Bullis C58	1	25	16	14	24	27	25	25	30	NV	35	36	25
	Calaveras Lake C59	1	27	21	23	26	28	24	32	30	37	29	32	23
	Heritage Middle School C622	1 ^N	27	20	22	27	28	24	32	30	40	31	33	24
	CPS Pecan Valley C678	1 ^N	21	17	20	20	25	18	19	24	33	24	27	20


Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
Corpus Christi-Victoria
	Corpus Christi West C4	2	28	24	24	22	27	28	41	36	27	31	35	27
	Corpus Christi Tuloso C21	1	28	21	23	24	26	29	38	34	24	29	35	26
	Victoria C87	1	29	20	21	23	27	27	35	29	25	29	32	25
	Aransas Pass C659	1 ^N	27	23	24	23	28	35	46	43	38	33	41	31
	Holly Road C660	1 ^N	27	23	23	22	28	27	38	39	32	30	36	30
	Violet C664	1 ^N	30	23	24	26	29	32	39	37	30	33	37	27
	Ingleside C685	1 ^N	28	21	21	21	25	29	41	37	31	32	35	27
	Odem C686	1 ^N	28	20	20	22	26	29	38	32	28	31	32	22
	Taft C687	1 ^N	29	22	23	23	28	31	42	36	NV	33	36	26


Area	Monitoring Site	POC	February 2012
1	2	3	4	5	6	7	8	9	10	11	12
Lower Rio Grande Valley
	Mission C43/AP143	1	26	19	22	23	22	24	32	30	19	26	35	25
	Brownsville C80/AGP180	1	25	23	22	22	23	23	35	35	31	26	42	35
	Mercedes C1048/A310	1	25	18	20	20	18	20	30	30	24	23	35	22
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.

Area

Monitoring Site

POC

February 2012

Dallas-Fort Worth

Ft. Worth Northwest C13/AH302

Keller C17

Frisco C31/C680

Midlothian OFW C52/A137

Denton Airport South C56/A163/X157

Arlington Municipal Airport C61

Dallas North No.2 C63/C679

Rockwall Heath C69

Grapevine Fairway C70/A301/X182

Kaufman C71/A304/X071

Granbury C73/C681

Eagle Mountain Lake C75

Parker County C76

Cleburne Airport C77/C682

Dallas Hinton St. C401/C60/AH161

Dallas Executive Airport C402

Greenville C1006/A198

Pilot Point C1032

Italy C1044/A323

Corsicana Airport C1051

Area

Monitoring Site

POC

February 2012

Tyler-Longview-Marshall

Longview C19/A127/C644

Tyler Airport Relocated C82

Karnack C85/AFHP303

Area

Monitoring Site

POC

February 2012

El Paso-Juarez

El Paso UTEP C12/A125/X151

Ascarate Park SE C37/A332/A172/X159

Chamizal C41/AH126

Socorro C49/F312

Skyline Park C72

BRAVO Big Bend C67/C316/C656/C691

3 ^N

Ivanhoe C414

Cd Juarez 20-30 Club C662

1 ^N

Cd Juarez Delphi C663

1 ^N

Area

Monitoring Site

POC

February 2012

Waco

Waco Mazanec C1037

Killeen Skylark Field C1047

Area

Monitoring Site

POC

February 2012

Beaumont-Port Arthur

Beaumont-Downtown C2/A112/C2002

West Orange C9/A141

Port Arthur West C28/A128/A228

Hamshire C64/C654

SETRPC Port Arthur C628

1 ^N

SETRPC 40 Sabine Pass C640/C1654

SETRPC Mauriceville 42 C642/C311/C665

1 ^N

SETRPC 43 Jefferson Co Airport C643

Nederland High School C1035

Area

Monitoring Site

POC

February 2012

Austin

Austin Northwest C3/A322

Audubon C38

Area

Monitoring Site

POC

February 2012

Houston-Galveston-Brazoria

Houston East C1/G316

Houston Aldine C8/AF108/X150

Channelview C15/AH115

Northwest Harris Co. C26/A110/X154

Hou.DeerPrk2 C35/235/1001/AFH139FP239

Seabrook Friendship Park C45

Houston Bayland Park C53/A146

Conroe Relocated C78/A321

Houston Regional Office C81

Manvel Croix Park C84

Clinton C403/C304/AH113

Houston North Wayside C405

Houston Monroe C406

Lang C408

Houston Croquet C409

Houston Westhollow C410

Houston Texas Avenue C411

Park Place C416

Sheldon C551

1 ^N

Baytown Wetlands Center C552

1 ^N

Crosby Library C553

1 ^N

West Houston C554

1 ^N

La Porte Sylvan Beach C556

1 ^N

Mercer Arboretum C557

1 ^N

1 ^N

1 ^N

1 ^N

1 ^N

Bunker Hill Village C562

1 ^N

Huffman Wolf Road C563

1 ^N

Clear Brook High School C570

1 ^N

Clear Creek High School C571

1 ^N

Clear Lake High School C572

1 ^N

HRM-3 Haden Road C603/A114

1 ^N

Wallisville Road C617

1 ^N

Danciger C618

1 ^N

Mustang Bayou C619

1 ^N

Texas City 34th St. C620

1 ^N

UH Moody Tower C695

1 ^N

U of H-Sugarland C696

1 ^N

UH Coastal Center C697

1 ^N

UH WG Jones Forest C698

1 ^N

UH West Liberty C699

1 ^N

Lynchburg Ferry C1015/A165

Lake Jackson C1016

Galveston 99th St. C1034/A320/X183

Area

Monitoring Site

POC

February 2012

San Antonio

San Antonio Northwest C23

Camp Bullis C58

Calaveras Lake C59

Heritage Middle School C622

1 ^N

CPS Pecan Valley C678

1 ^N

Area

Monitoring Site

POC

February 2012

Corpus Christi-Victoria

Corpus Christi West C4

Corpus Christi Tuloso C21

1 ^N

1 ^N

1 ^N

1 ^N

1 ^N

1 ^N

Area

Monitoring Site

POC

February 2012

Lower Rio Grande Valley

Mission C43/AP143

Brownsville C80/AGP180

Mercedes C1048/A310

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

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

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

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.

Month:	Year:	Report Format:	Include time:
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Highlight with AQI colors