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/m3153
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
1 2/7/1853 38402424 452753
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.