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.

2018 Year to Date Summary

 StandardLimit# of Days ExceedingYear to Date Max
Ozone 1-hour State Standard94 ppb
Ozone 8-hour Federal Standard70 ppb
Ozone 8-hour State Standard70 pbb
Particulate Matter PM10 24-hour State Standard50 ug/m322128
Particulate Matter PM10 24-hour Federal Standard154 ug/m3
Particulate Matter PM2.5 24-hour Federal Standard35 ug/m3
Count DateDaily Max CarpEl Capitan GoletaLas Flores CynLompoc HS&PLompoc H StNojoquiParadise RdSanta BarbaraSanta MariaSanta YnezVAFB South
Count DateDaily Max CarpEl Capitan GoletaLas Flores CynLompoc HS&PLompoc H StNojoquiParadise RdSanta BarbaraSanta MariaSanta YnezVAFB South
Count DateDaily Max CarpEl Capitan GoletaLas Flores CynLompoc HS&PLompoc H StNojoquiParadise RdSanta BarbaraSanta MariaSanta YnezVAFB South
Count DateDaily MaxEl Capitan GoletaLas Flores CynLompoc H StSanta BarbaraSanta MariaVAFB South
11/12/185720241019571624
21/13/18108211811211081630
31/14/1812832169171281625
41/15/187820241122781940
51/16/18100472917181002328
61/17/187738291411771535
71/18/186435301411641629
81/30/18531324725532629
92/6/185338402424462753
104/12/1853191617282153NA
114/22/185841352532413958
124/27/185224262425315229
135/11/186032602828402958
146/9/185147403526NA5129
156/10/185442433341NA5442
166/23/185620221533242956
177/6/187252722635626238
187/7/186056583540605942
197/9/185742363440395744
207/10/185231293041325243
218/6/185636333135375626
228/7/185252434525454023
CountDateDaily MaxEl CapitanGoletaLas Flores CynLompoc H StSanta BarbaraSanta MariaVAFB South
CountDateDaily MaxGoletaLompoc H StSanta BarbaraSanta Maria

Notes:

For previous years see 2017, 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.