Highest daily Air Quality Index (US EPA) in Santa Barbara County

Highest daily Air Quality Index (US EPA) in Santa Barbara County was 87 in 2025, according to the U.S. Environmental Protection Agency. That is down 59 from 2024.

2025, index87
Change on 2024-59
Series high3132016
Series low872025

Next release: Tuesday, 13 July 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

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Highest daily Air Quality Index (US EPA) in Santa Barbara County, 1980 to 2025

5010015020025030035019801987199420012008201520251980: 213 index1981: 235 index1982: 227 index1983: 214 index1984: 214 index1985: 237 index1986: 224 index1987: 239 index1988: 192 index1989: 275 index1990: 238 index1991: 208 index1992: 221 index1993: 205 index1994: 212 index1995: 214 index1996: 218 index1997: 203 index1998: 216 index1999: 205 index2000: 154 index2001: 201 index2002: 161 index2003: 192 index2004: 192 index2005: 140 index2006: 165 index2007: 183 index2008: 151 index2009: 172 index2010: 143 index2011: 161 index2012: 136 index2013: 122 index2014: 159 index2015: 101 index2016: 313 index2017: 313 index2018: 114 index2019: 105 index2020: 174 index2021: 101 index2022: 93 index2023: 95 index2024: 146 index2025: 87 index010020030040019801996201220251980: 213 index1981: 235 index1982: 227 index1983: 214 index1984: 214 index1985: 237 index1986: 224 index1987: 239 index1988: 192 index1989: 275 index1990: 238 index1991: 208 index1992: 221 index1993: 205 index1994: 212 index1995: 214 index1996: 218 index1997: 203 index1998: 216 index1999: 205 index2000: 154 index2001: 201 index2002: 161 index2003: 192 index2004: 192 index2005: 140 index2006: 165 index2007: 183 index2008: 151 index2009: 172 index2010: 143 index2011: 161 index2012: 136 index2013: 122 index2014: 159 index2015: 101 index2016: 313 index2017: 313 index2018: 114 index2019: 105 index2020: 174 index2021: 101 index2022: 93 index2023: 95 index2024: 146 index2025: 87 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 46 values
Periodindex
202587
2024146
202395
202293
2021101
2020174
2019105
2018114
2017313
2016313
2015101
2014159
2013122
2012136
2011161
2010143
2009172
2008151
2007183
2006165
2005140
2004192
2003192
2002161
2001201
2000154
1999205
1998216
1997203
1996218
1995214
1994212
1993205
1992221
1991208
1990238
1989275
1988192
1987239
1986224
1985237
1984214
1983214
1982227
1981235
1980213

Santa Barbara County compared with nearby places

Amador County: 97 indexButte County: 96 indexCalaveras County: 100 indexColusa County: 96 indexDel Norte County: 70 indexEl Dorado County: 115 indexFresno County: 164 indexGlenn County: 94 indexHumboldt County: 87 indexImperial County: 426 indexInyo County: 411 indexKern County: 200 indexKings County: 133 indexLake County: 74 indexLos Angeles County: 201 indexMadera County: 136 indexMarin County: 66 indexMariposa County: 90 indexMendocino County: 81 indexMerced County: 100 indexMono County: 704 indexMonterey County: 62 indexNevada County: 108 indexOrange County: 159 indexPlacer County: 143 indexPlumas County: 120 indexRiverside County: 365 indexSacramento County: 122 indexSan Benito County: 71 indexSan Bernardino County: 207 indexSan Diego County: 161 indexSan Joaquin County: 93 indexSan Luis Obispo County: 119 indexSanta Barbara County: 87 indexSanta Cruz County: 71 indexShasta County: 154 indexSiskiyou County: 166 indexSolano County: 61 indexSonoma County: 39 indexStanislaus County: 115 indexSutter County: 100 indexTehama County: 108 indexTrinity County: 164 indexTulare County: 147 indexTuolumne County: 105 indexVentura County: 131 indexYolo County: 100 index
  • Under 79
  • 79 to 96
  • 96 to 110
  • 110 to 140
  • 140 to 160
  • 160 and over
  • No data
Highest daily Air Quality Index (US EPA), 2025, index. Santa Barbara County is outlined. Same source and period for every area shown. Source: U.S. Environmental Protection Agency. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

Definition

Highest daily Air Quality Index (AQI) value recorded in a US county during the year, from the EPA AirData annual summaries. Values above 500 are beyond the AQI scale and are published as EPA computes them.

A single day decides the value, so one wildfire or dust event can set it. Dust from the dry Owens Lake bed puts Inyo and Mono counties in California in the thousands. United States counties with air quality monitors only, about 1,000 of some 3,100 in recent years; a county without monitors has no value. The number of days with an AQI differs between counties because some monitors run only in the ozone season.

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How to cite

U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: highest daily AQI. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Environmental Protection Agency. (2026). EPA AirData annual AQI by county: highest daily AQI (Highest daily Air Quality Index (US EPA), Santa Barbara County, 1980 to 2025) [Data set]. Retrieved October 12, 2026, from https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual

MLA 9

EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Santa Barbara County, 1980 to 2025. U.S. Environmental Protection Agency, 13 July 2026, https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Invokely, https://invokely.ai/en/highest-daily-air-quality-index/santa-barbara-county-california. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2026. EPA AirData annual AQI by county: highest daily AQI. Highest daily Air Quality Index (US EPA), Santa Barbara County, 1980 to 2025. Dataset. Accessed October 12, 2026. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Also distributed by Invokely, https://invokely.ai/en/highest-daily-air-quality-index/santa-barbara-county-california.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Santa Barbara County, 1980 to 2025 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/santa-barbara-county-california (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2025,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Santa Barbara County, 1980 to 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/santa-barbara-county-california. Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: highest daily AQI. https://aqs.epa.gov/aqsweb/airdata/download\_files.html\#Annual. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Environmental Protection Agency
TI  - EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Santa Barbara County, 1980 to 2025
PY  - 2026
DA  - 2026/07/13
PB  - U.S. Environmental Protection Agency
DB  - Invokely
UR  - https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual
L2  - https://invokely.ai/en/highest-daily-air-quality-index/santa-barbara-county-california
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/santa-barbara-county-california.
N1  - Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: highest daily AQI. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
ER  - 
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Questions

What is the highest daily Air Quality Index (US EPA) in Santa Barbara County?

Highest daily Air Quality Index (US EPA) in Santa Barbara County was 87 in 2025, according to the U.S. Environmental Protection Agency. That is down 59 from 2024.

Where does this figure come from?

U.S. Environmental Protection Agency. EPA AirData annual AQI by county: highest daily AQI. Retrieved by Invokely on 2026-10-12.

What was the highest highest daily Air Quality Index (US EPA) in Santa Barbara County?

313 in 2016, the highest value since 1980 in this series.

Related statistics for Santa Barbara County

All statistics for Santa Barbara County | Santa Barbara County in figures