These summaries are not updated in real time. Data will be posted as soon as compiled. Data are preliminary, and subject to change. For statewide information by zip code or city name see EPA’s AIRNOW web page.

2017 Year to Date Summary

 StandardLimit# of Days ExceedingYear to Date Max
Ozone 1-hour State Standard94 ppb1100 ppb
Ozone 8-hour Federal Standard70 ppb175 ppb
Ozone 8-hour State Standard70 pbb176 ppb
Particulate Matter PM10 24-hour State Standard50 ug/m336410 ug/m3
Particulate Matter PM10 24-hour Federal Standard154 ug/m32399 ug/m3
Count DateDaily Max CarpEl Capitan GoletaLas Flores CynLompoc HS&PLompoc H StNojoquiParadise RdSanta BarbaraSanta MariaSanta YnezVAFB South
19/2/2017 100 72 63 100 91 79 63 60 70 76 68 71 75
Count DateDaily Max CarpEl Capitan GoletaLas Flores CynLompoc HS&PLompoc H StNojoquiParadise RdSanta BarbaraSanta MariaSanta YnezVAFB South
19/2/2017 75 57 54 68 75 75 56 55 65 61 63 66 68
Count DateDaily Max CarpEl Capitan GoletaLas Flores CynLompoc HS&PLompoc H StNojoquiParadise RdSanta BarbaraSanta MariaSanta YnezVAFB South
19/2/2017 76 58 54 68 76 75 56 55 66 62 63 67 69
Count DateDaily MaxEl Capitan GoletaLas Flores CynLompoc H StSanta BarbaraSanta MariaVAFB South
11/3/201710111131112NA12101
21/8/2017410168711NA8410
31/21/20175230181825NA2152
42/2/20172161713106NA5216
53/30/20178034383441NA8053
63/31/20175723262137NA4457
74/27/20175923272036NA5941
84/28/20177231393143NA7251
95/1/20175238352735NA5252
105/2/20175931373144NA5950
115/6/20175125242543NA5051
125/12/20175721272529NA5736
135/19/20175640302335NANA56
146/14/20175435343034NA5439
156/15/20175638343435NA5639
166/17/2017543024NA41NA5449
177/7/201754NA323343NA5441
187/8/20176048394054NA6056
197/16/20175338273647NA5153
207/17/20175129202743NA5138
217/20/20175454233425NA3229
228/31/20175443353432544432
239/1/20176043323546526052
249/2/20177758334054497758
259/3/20175852304043415258
2610/4/20175139313634375138
 2710/5/20175739293436405745
2810/6/20175235312640455244
2910/7/20175151282841394947
3010/9/20177068537053696460
3110/10/20175946385251585759
3210/12/20177245374457476172
3310/13/20176446354055456264
3410/14/20176145323248395861
3510/17/20176153434045476151
3610/18/20175757484235544138
CountDateDaily MaxEl CapitanGoletaLas Flores CynLompoc H StSanta BarbaraSanta MariaVAFB South
11/8/2017399157510NA7399
22/2/2017208151195NA4208

Notes:

For previous years see 2016 or 2015-1998.

Ozone 8 hour Averages   Although the federal and state 8-hour average ozone standards are both set at 70 ppb, recorded levels for the state standard are rounded to the nearest whole number, while levels for the federal standard are truncated to the nearest whole number.  For example, a value of 71.6 would be rounded to 72 for the state standard and truncated to 71 for the federal standard.

Particulate Matter PM10 is calculated different when being compared to the state standard versus the federal standard. The PM10 state 24 hour value is a rounded average of the monitors 24 hourly readings in a day using local ambient temperature and pressure conditions. The PM10 federal 24 hour value is a truncated average of the monitors 24 hourly readings in a day using standardized temperature and pressure conditions. This difference results in slightly different 24 hour averages for each monitoring station on a given day.