EnviroNearby

Tulare County, California air quality history

Daily Air Quality Index summaries from EPA monitors in Tulare, California, 1980–2025.

24%
Good days in 2025
64
Median daily AQI, 2025
43
Days above 100 in 2025
365
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Tulare, California on 365 days. 88 of those days (24%) were in the Good range, and the median daily AQI was 64. That median is higher than the typical monitored county in California (median 45.5 across 46 counties), and higher than the typical monitored U.S. county (40). The main pollutant was ozone on 197 days. Across the years with fuller monitoring, the share of Good days fell: an average of 40% in 1980–1982 versus 24% in 2023–2025.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Share of monitored days in each AQI category, by year0%25%50%75%100%1980: Good 126 of 366 days1980: Moderate 123 of 366 days1980: Unhealthy for Sensitive Groups 56 of 366 days1980: Unhealthy 51 of 366 days1980: Very Unhealthy 10 of 366 days19801981: Good 160 of 365 days1981: Moderate 112 of 365 days1981: Unhealthy for Sensitive Groups 61 of 365 days1981: Unhealthy 30 of 365 days1981: Very Unhealthy 2 of 365 days1982: Good 157 of 365 days1982: Moderate 93 of 365 days1982: Unhealthy for Sensitive Groups 34 of 365 days1982: Unhealthy 52 of 365 days1982: Very Unhealthy 29 of 365 days1983: Good 183 of 365 days1983: Moderate 74 of 365 days1983: Unhealthy for Sensitive Groups 59 of 365 days1983: Unhealthy 42 of 365 days1983: Very Unhealthy 7 of 365 days1984: Good 165 of 366 days1984: Moderate 98 of 366 days1984: Unhealthy for Sensitive Groups 48 of 366 days1984: Unhealthy 51 of 366 days1984: Very Unhealthy 4 of 366 days1985: Good 127 of 365 days1985: Moderate 98 of 365 days1985: Unhealthy for Sensitive Groups 49 of 365 days1985: Unhealthy 75 of 365 days1985: Very Unhealthy 16 of 365 days19851986: Good 105 of 364 days1986: Moderate 115 of 364 days1986: Unhealthy for Sensitive Groups 52 of 364 days1986: Unhealthy 66 of 364 days1986: Very Unhealthy 26 of 364 days1987: Good 116 of 365 days1987: Moderate 76 of 365 days1987: Unhealthy for Sensitive Groups 56 of 365 days1987: Unhealthy 104 of 365 days1987: Very Unhealthy 13 of 365 days1988: Good 93 of 366 days1988: Moderate 118 of 366 days1988: Unhealthy for Sensitive Groups 67 of 366 days1988: Unhealthy 82 of 366 days1988: Very Unhealthy 6 of 366 days1989: Good 111 of 365 days1989: Moderate 111 of 365 days1989: Unhealthy for Sensitive Groups 77 of 365 days1989: Unhealthy 56 of 365 days1989: Very Unhealthy 10 of 365 days1990: Good 103 of 365 days1990: Moderate 126 of 365 days1990: Unhealthy for Sensitive Groups 82 of 365 days1990: Unhealthy 52 of 365 days1990: Very Unhealthy 2 of 365 days19901991: Good 123 of 365 days1991: Moderate 112 of 365 days1991: Unhealthy for Sensitive Groups 73 of 365 days1991: Unhealthy 56 of 365 days1991: Very Unhealthy 1 of 365 days1992: Good 140 of 366 days1992: Moderate 93 of 366 days1992: Unhealthy for Sensitive Groups 72 of 366 days1992: Unhealthy 60 of 366 days1992: Very Unhealthy 1 of 366 days1993: Good 133 of 365 days1993: Moderate 97 of 365 days1993: Unhealthy for Sensitive Groups 71 of 365 days1993: Unhealthy 53 of 365 days1993: Very Unhealthy 11 of 365 days1994: Good 120 of 365 days1994: Moderate 107 of 365 days1994: Unhealthy for Sensitive Groups 59 of 365 days1994: Unhealthy 62 of 365 days1994: Very Unhealthy 17 of 365 days1995: Good 139 of 365 days1995: Moderate 88 of 365 days1995: Unhealthy for Sensitive Groups 88 of 365 days1995: Unhealthy 46 of 365 days1995: Very Unhealthy 4 of 365 days19951996: Good 163 of 366 days1996: Moderate 75 of 366 days1996: Unhealthy for Sensitive Groups 55 of 366 days1996: Unhealthy 69 of 366 days1996: Very Unhealthy 4 of 366 days1997: Good 126 of 365 days1997: Moderate 122 of 365 days1997: Unhealthy for Sensitive Groups 68 of 365 days1997: Unhealthy 48 of 365 days1997: Very Unhealthy 1 of 365 days1998: Good 174 of 365 days1998: Moderate 85 of 365 days1998: Unhealthy for Sensitive Groups 48 of 365 days1998: Unhealthy 52 of 365 days1998: Very Unhealthy 6 of 365 days1999: Good 93 of 365 days1999: Moderate 100 of 365 days1999: Unhealthy for Sensitive Groups 78 of 365 days1999: Unhealthy 86 of 365 days1999: Very Unhealthy 8 of 365 days2000: Good 123 of 366 days2000: Moderate 83 of 366 days2000: Unhealthy for Sensitive Groups 75 of 366 days2000: Unhealthy 81 of 366 days2000: Very Unhealthy 4 of 366 days20002001: Good 94 of 365 days2001: Moderate 99 of 365 days2001: Unhealthy for Sensitive Groups 93 of 365 days2001: Unhealthy 77 of 365 days2001: Very Unhealthy 2 of 365 days2002: Good 36 of 365 days2002: Moderate 133 of 365 days2002: Unhealthy for Sensitive Groups 88 of 365 days2002: Unhealthy 97 of 365 days2002: Very Unhealthy 11 of 365 days2003: Good 35 of 365 days2003: Moderate 147 of 365 days2003: Unhealthy for Sensitive Groups 93 of 365 days2003: Unhealthy 78 of 365 days2003: Very Unhealthy 12 of 365 days2004: Good 35 of 366 days2004: Moderate 168 of 366 days2004: Unhealthy for Sensitive Groups 86 of 366 days2004: Unhealthy 77 of 366 days2005: Good 48 of 365 days2005: Moderate 168 of 365 days2005: Unhealthy for Sensitive Groups 79 of 365 days2005: Unhealthy 66 of 365 days2005: Very Unhealthy 4 of 365 days20052006: Good 57 of 365 days2006: Moderate 165 of 365 days2006: Unhealthy for Sensitive Groups 74 of 365 days2006: Unhealthy 67 of 365 days2006: Very Unhealthy 2 of 365 days2007: Good 39 of 365 days2007: Moderate 146 of 365 days2007: Unhealthy for Sensitive Groups 120 of 365 days2007: Unhealthy 60 of 365 days2008: Good 45 of 366 days2008: Moderate 151 of 366 days2008: Unhealthy for Sensitive Groups 97 of 366 days2008: Unhealthy 65 of 366 days2008: Very Unhealthy 8 of 366 days2009: Good 71 of 365 days2009: Moderate 161 of 365 days2009: Unhealthy for Sensitive Groups 83 of 365 days2009: Unhealthy 50 of 365 days2010: Good 65 of 365 days2010: Moderate 188 of 365 days2010: Unhealthy for Sensitive Groups 78 of 365 days2010: Unhealthy 34 of 365 days20102011: Good 49 of 365 days2011: Moderate 168 of 365 days2011: Unhealthy for Sensitive Groups 93 of 365 days2011: Unhealthy 55 of 365 days2012: Good 63 of 366 days2012: Moderate 165 of 366 days2012: Unhealthy for Sensitive Groups 98 of 366 days2012: Unhealthy 40 of 366 days2013: Good 33 of 365 days2013: Moderate 194 of 365 days2013: Unhealthy for Sensitive Groups 111 of 365 days2013: Unhealthy 26 of 365 days2013: Very Unhealthy 1 of 365 days2014: Good 44 of 365 days2014: Moderate 197 of 365 days2014: Unhealthy for Sensitive Groups 97 of 365 days2014: Unhealthy 27 of 365 days2015: Good 29 of 365 days2015: Moderate 238 of 365 days2015: Unhealthy for Sensitive Groups 78 of 365 days2015: Unhealthy 20 of 365 days20152016: Good 55 of 366 days2016: Moderate 187 of 366 days2016: Unhealthy for Sensitive Groups 102 of 366 days2016: Unhealthy 22 of 366 days2017: Good 67 of 365 days2017: Moderate 171 of 365 days2017: Unhealthy for Sensitive Groups 96 of 365 days2017: Unhealthy 31 of 365 days2018: Good 50 of 365 days2018: Moderate 194 of 365 days2018: Unhealthy for Sensitive Groups 95 of 365 days2018: Unhealthy 26 of 365 days2019: Good 98 of 365 days2019: Moderate 186 of 365 days2019: Unhealthy for Sensitive Groups 78 of 365 days2019: Unhealthy 2 of 365 days2019: Very Unhealthy 1 of 365 days2020: Good 52 of 366 days2020: Moderate 179 of 366 days2020: Unhealthy for Sensitive Groups 103 of 366 days2020: Unhealthy 30 of 366 days2020: Very Unhealthy 2 of 366 days20202021: Good 49 of 365 days2021: Moderate 182 of 365 days2021: Unhealthy for Sensitive Groups 93 of 365 days2021: Unhealthy 38 of 365 days2021: Very Unhealthy 2 of 365 days2021: Hazardous 1 of 365 days2022: Good 58 of 365 days2022: Moderate 193 of 365 days2022: Unhealthy for Sensitive Groups 106 of 365 days2022: Unhealthy 8 of 365 days2023: Good 94 of 365 days2023: Moderate 189 of 365 days2023: Unhealthy for Sensitive Groups 61 of 365 days2023: Unhealthy 19 of 365 days2023: Very Unhealthy 2 of 365 days2024: Good 76 of 366 days2024: Moderate 179 of 366 days2024: Unhealthy for Sensitive Groups 83 of 366 days2024: Unhealthy 28 of 366 days2025: Good 88 of 365 days2025: Moderate 234 of 365 days2025: Unhealthy for Sensitive Groups 43 of 365 days2025
  • Good
  • Moderate
  • Unhealthy for Sensitive Groups
  • Unhealthy
  • Very Unhealthy
  • Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median and 90th-percentile daily AQI, by year0501001502001980: 90th percentile AQI 1691981: 90th percentile AQI 1501982: 90th percentile AQI 1951983: 90th percentile AQI 1611984: 90th percentile AQI 1611985: 90th percentile AQI 1871986: 90th percentile AQI 1901987: 90th percentile AQI 1871988: 90th percentile AQI 1771989: 90th percentile AQI 1691990: 90th percentile AQI 1641991: 90th percentile AQI 1691992: 90th percentile AQI 1661993: 90th percentile AQI 1771994: 90th percentile AQI 1851995: 90th percentile AQI 1641996: 90th percentile AQI 1661997: 90th percentile AQI 1591998: 90th percentile AQI 1661999: 90th percentile AQI 1822000: 90th percentile AQI 1782001: 90th percentile AQI 1662002: 90th percentile AQI 1772003: 90th percentile AQI 1772004: 90th percentile AQI 1642005: 90th percentile AQI 1632006: 90th percentile AQI 1612007: 90th percentile AQI 1582008: 90th percentile AQI 1662009: 90th percentile AQI 1542010: 90th percentile AQI 1502011: 90th percentile AQI 1592012: 90th percentile AQI 1512013: 90th percentile AQI 1432014: 90th percentile AQI 1452015: 90th percentile AQI 1432016: 90th percentile AQI 1452017: 90th percentile AQI 1472018: 90th percentile AQI 1402019: 90th percentile AQI 1222020: 90th percentile AQI 1452021: 90th percentile AQI 1542022: 90th percentile AQI 1292023: 90th percentile AQI 1262024: 90th percentile AQI 1472025: 90th percentile AQI 1051980: Median AQI 681981: Median AQI 571982: Median AQI 571983: Median AQI 491984: Median AQI 571985: Median AQI 741986: Median AQI 791987: Median AQI 871988: Median AQI 871989: Median AQI 871990: Median AQI 841991: Median AQI 701992: Median AQI 671993: Median AQI 671994: Median AQI 681995: Median AQI 751996: Median AQI 581997: Median AQI 671998: Median AQI 521999: Median AQI 972000: Median AQI 872001: Median AQI 952002: Median AQI 1082003: Median AQI 1012004: Median AQI 962005: Median AQI 852006: Median AQI 902007: Median AQI 1002008: Median AQI 972009: Median AQI 842010: Median AQI 722011: Median AQI 842012: Median AQI 812013: Median AQI 842014: Median AQI 842015: Median AQI 802016: Median AQI 772017: Median AQI 812018: Median AQI 792019: Median AQI 672020: Median AQI 802021: Median AQI 812022: Median AQI 772023: Median AQI 692024: Median AQI 712025: Median AQI 641980198519901995200020052010201520202025
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2025

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

PollutantDays as main pollutantShare of monitored days
Ozone19754%
Fine particles (PM2.5)16345%
Coarse particles (PM10)51%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025365882344300064105147Ozone
20243667617983280071147185Ozone
20233659418961192069126242Ozone
20223655819310680077129182Ozone
20213654918293382181154961PM2.5
202036652179103302080145225PM2.5
2019365981867821067122280Ozone
20183655019495260079140180Ozone
20173656717196310081147174Ozone
201636655187102220077145177Ozone
20153652923878200080143176Ozone
20143654419797270084145172Ozone
201336533194111261084143201Ozone
20123666316598400081151195Ozone
20113654916893550084159195Ozone
20103656518878340072150197Ozone
20093657116183500084154187Ozone
20083664515197658097166217Ozone
2007365391461206000100158192PM2.5
20063655716574672090161204Ozone
20053654816879664085163207PM2.5
20043663516886770096164195Ozone
2003365351479378120101177210Ozone
2002365361338897110108177213Ozone
2001365949993772095166206Ozone
20003661238375814087178203Ozone
19993659310078868097182207Ozone
19983651748548526052166218Ozone
199736512612268481067159201Ozone
19963661637555694058166206Ozone
19953651398888464075164207Ozone
1994365120107596217068185215Ozone
199336513397715311067177221Ozone
19923661409372601067166201Ozone
199136512311273561070169206Ozone
199036510312682522084164210Ozone
1989365111111775610087169217Ozone
19883669311867826087177213Ozone
1987365116765610413087187229Ozone
1986364105115526626079190217Ozone
198536512798497516074187208Ozone
19843661659848514057161213Ozone
19833651837459427049161207Ozone
198236515793345229057195224Ozone
198136516011261302057150203Ozone
1980366126123565110068169214Ozone

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

Counties in California with a similar median AQI in 2025

All monitored counties in California

Source: U.S. EPA AirData, “Annual AQI by County” files for 1980–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem