Days Exceeding Ozone and Particulate Standards

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.

2020 Year to Date Summary

StandardLimit# of Days ExceedingYear to Date Max
Ozone 1-hour State Standard94 ppb2101 ppb
Ozone 8-hour Federal Standard70 ppb485 ppb
Ozone 8-hour State Standard70 pbb485 ppb
Particulate Matter PM10 24-hour State Standard50 ug/m319117 ug/m3
Particulate Matter PM10 24-hour Federal Standard154 ug/m3  
Particulate Matter PM2.5 24-hour Federal Standard35 ug/m3888.4 ug/m3
9

 

CountDateDaily MaxCarpGoletaLas Flores CynLompoc HS&PLompoc H StParadise RdSanta BarbaraSanta MariaSanta Ynez
18-19-2097514644241497501877
28-21-201014732535215101302675

 

CountDateDaily MaxCarpGoletaLas Flores CynLompoc HS&PLompoc H StParadise RdSanta BarbaraSanta MariaSanta Ynez
18-18-2072503744431672353159
28-19-2085564350401785452167
38-20-2075433759301675382041
48-21-2085433446501485352766

 

CountDateDaily MaxCarpGoletaLas Flores CynLompoc HS&PLompoc H StParadise RdSanta BarbaraSanta MariaSanta Ynez
18-18-2072513845441772353260
28-19-2085564350401785452167
38-20-2075433759301675382041
48-21-2085433446501485352766

 

CountDateDaily MaxGoletaLas Flores CynLompoc H StSanta BarbaraSanta Maria
14/24/205134NA344451
24/30/20532015241453
35/1/20523324323152
45/7/20593621394259
56/7/20562417392556
67/4/20581917351958
78/19/20753934624475
88/20/20826667707182
98/21/20737368446958
108/22/20615442455561
119/5/20604126394860
129/6/20534227465053
139/7/20553030453355
149/11/20634236634855
159/12/20715844656071
169/13/20846457846283
179/14/20117865811184117
189/15/20927146637992

 

CountDateDaily MaxGoletaLas Flores CynLompoc H StSanta BarbaraSanta Maria
        

 

CountDateDaily MaxGoletaLompoc H StSanta BarbaraSanta Maria
17/4/2035.58.019.38.035.5
28/20/2049.542.042.940.049.5
38/21/205050.028.445.032.3
49/11/2048.728.048.729.041.6
59/12/2053.243.049.14753.2
69/13/2066.046.063.446.066.0
79/14/2088.461.085.663.088.4
89/15/2065.452.048.259.065.4

 

Notes:

For previous years see 2019, 20182017, 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.

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