EnviroNearby

Lane County, Oregon air quality history

Daily Air Quality Index summaries from EPA monitors in Lane, Oregon, 1980–2025.

56%
Good days in 2025
46
Median daily AQI, 2025
6
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 Lane, Oregon on 365 days. 206 of those days (56%) were in the Good range, and the median daily AQI was 46. That median is higher than the typical monitored county in Oregon (median 29 across 21 counties), and higher than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 285 days. Across the years with fuller monitoring, the share of Good days fell: an average of 71% in 1980–1982 versus 56% 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 226 of 323 days1980: Moderate 94 of 323 days1980: Unhealthy for Sensitive Groups 3 of 323 days19801981: Good 222 of 354 days1981: Moderate 119 of 354 days1981: Unhealthy for Sensitive Groups 8 of 354 days1981: Unhealthy 2 of 354 days1981: Very Unhealthy 3 of 354 days1982: Good 295 of 365 days1982: Moderate 70 of 365 days1983: Good 275 of 365 days1983: Moderate 86 of 365 days1983: Unhealthy for Sensitive Groups 4 of 365 days1984: Good 301 of 366 days1984: Moderate 63 of 366 days1984: Unhealthy for Sensitive Groups 2 of 366 days1985: Good 271 of 365 days1985: Moderate 70 of 365 days1985: Unhealthy for Sensitive Groups 22 of 365 days1985: Unhealthy 2 of 365 days19851986: Good 255 of 365 days1986: Moderate 97 of 365 days1986: Unhealthy for Sensitive Groups 12 of 365 days1986: Unhealthy 1 of 365 days1987: Good 228 of 365 days1987: Moderate 123 of 365 days1987: Unhealthy for Sensitive Groups 11 of 365 days1987: Unhealthy 3 of 365 days1988: Good 265 of 365 days1988: Moderate 86 of 365 days1988: Unhealthy for Sensitive Groups 7 of 365 days1988: Unhealthy 6 of 365 days1988: Very Unhealthy 1 of 365 days1989: Good 286 of 364 days1989: Moderate 77 of 364 days1989: Unhealthy for Sensitive Groups 1 of 364 days1990: Good 285 of 358 days1990: Moderate 67 of 358 days1990: Unhealthy for Sensitive Groups 6 of 358 days19901991: Good 275 of 365 days1991: Moderate 80 of 365 days1991: Unhealthy for Sensitive Groups 10 of 365 days1992: Good 267 of 366 days1992: Moderate 91 of 366 days1992: Unhealthy for Sensitive Groups 8 of 366 days1993: Good 273 of 365 days1993: Moderate 91 of 365 days1993: Unhealthy for Sensitive Groups 1 of 365 days1994: Good 277 of 365 days1994: Moderate 85 of 365 days1994: Unhealthy for Sensitive Groups 3 of 365 days1995: Good 311 of 365 days1995: Moderate 53 of 365 days1995: Unhealthy for Sensitive Groups 1 of 365 days19951996: Good 318 of 366 days1996: Moderate 32 of 366 days1996: Unhealthy for Sensitive Groups 11 of 366 days1996: Unhealthy 5 of 366 days1997: Good 318 of 365 days1997: Moderate 47 of 365 days1998: Good 324 of 365 days1998: Moderate 30 of 365 days1998: Unhealthy for Sensitive Groups 10 of 365 days1998: Unhealthy 1 of 365 days1999: Good 162 of 365 days1999: Moderate 183 of 365 days1999: Unhealthy for Sensitive Groups 13 of 365 days1999: Unhealthy 7 of 365 days2000: Good 172 of 366 days2000: Moderate 163 of 366 days2000: Unhealthy for Sensitive Groups 25 of 366 days2000: Unhealthy 6 of 366 days20002001: Good 163 of 365 days2001: Moderate 165 of 365 days2001: Unhealthy for Sensitive Groups 27 of 365 days2001: Unhealthy 10 of 365 days2002: Good 141 of 365 days2002: Moderate 198 of 365 days2002: Unhealthy for Sensitive Groups 18 of 365 days2002: Unhealthy 8 of 365 days2003: Good 169 of 365 days2003: Moderate 165 of 365 days2003: Unhealthy for Sensitive Groups 26 of 365 days2003: Unhealthy 5 of 365 days2004: Good 151 of 366 days2004: Moderate 191 of 366 days2004: Unhealthy for Sensitive Groups 22 of 366 days2004: Unhealthy 2 of 366 days2005: Good 183 of 365 days2005: Moderate 145 of 365 days2005: Unhealthy for Sensitive Groups 28 of 365 days2005: Unhealthy 9 of 365 days20052006: Good 233 of 365 days2006: Moderate 117 of 365 days2006: Unhealthy for Sensitive Groups 15 of 365 days2007: Good 217 of 365 days2007: Moderate 125 of 365 days2007: Unhealthy for Sensitive Groups 22 of 365 days2007: Unhealthy 1 of 365 days2008: Good 171 of 366 days2008: Moderate 180 of 366 days2008: Unhealthy for Sensitive Groups 15 of 366 days2009: Good 160 of 365 days2009: Moderate 179 of 365 days2009: Unhealthy for Sensitive Groups 23 of 365 days2009: Unhealthy 3 of 365 days2010: Good 202 of 365 days2010: Moderate 158 of 365 days2010: Unhealthy for Sensitive Groups 5 of 365 days20102011: Good 208 of 365 days2011: Moderate 141 of 365 days2011: Unhealthy for Sensitive Groups 15 of 365 days2011: Unhealthy 1 of 365 days2012: Good 211 of 366 days2012: Moderate 147 of 366 days2012: Unhealthy for Sensitive Groups 8 of 366 days2013: Good 202 of 365 days2013: Moderate 142 of 365 days2013: Unhealthy for Sensitive Groups 20 of 365 days2013: Unhealthy 1 of 365 days2014: Good 190 of 365 days2014: Moderate 158 of 365 days2014: Unhealthy for Sensitive Groups 17 of 365 days2015: Good 213 of 365 days2015: Moderate 137 of 365 days2015: Unhealthy for Sensitive Groups 13 of 365 days2015: Unhealthy 2 of 365 days20152016: Good 256 of 366 days2016: Moderate 109 of 366 days2016: Unhealthy for Sensitive Groups 1 of 366 days2017: Good 200 of 365 days2017: Moderate 135 of 365 days2017: Unhealthy for Sensitive Groups 16 of 365 days2017: Unhealthy 9 of 365 days2017: Very Unhealthy 4 of 365 days2017: Hazardous 1 of 365 days2018: Good 213 of 365 days2018: Moderate 144 of 365 days2018: Unhealthy for Sensitive Groups 7 of 365 days2018: Unhealthy 1 of 365 days2019: Good 216 of 365 days2019: Moderate 141 of 365 days2019: Unhealthy for Sensitive Groups 8 of 365 days2020: Good 203 of 366 days2020: Moderate 149 of 366 days2020: Unhealthy for Sensitive Groups 4 of 366 days2020: Very Unhealthy 2 of 366 days2020: Hazardous 8 of 366 days20202021: Good 214 of 365 days2021: Moderate 131 of 365 days2021: Unhealthy for Sensitive Groups 6 of 365 days2021: Unhealthy 13 of 365 days2021: Very Unhealthy 1 of 365 days2022: Good 194 of 365 days2022: Moderate 132 of 365 days2022: Unhealthy for Sensitive Groups 5 of 365 days2022: Unhealthy 14 of 365 days2022: Very Unhealthy 9 of 365 days2022: Hazardous 11 of 365 days2023: Good 190 of 365 days2023: Moderate 159 of 365 days2023: Unhealthy for Sensitive Groups 9 of 365 days2023: Unhealthy 6 of 365 days2023: Very Unhealthy 1 of 365 days2024: Good 219 of 366 days2024: Moderate 131 of 366 days2024: Unhealthy for Sensitive Groups 10 of 366 days2024: Unhealthy 5 of 366 days2024: Very Unhealthy 1 of 366 days2025: Good 206 of 365 days2025: Moderate 153 of 365 days2025: Unhealthy for Sensitive Groups 5 of 365 days2025: Unhealthy 1 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 year0501001501980: 90th percentile AQI 691981: 90th percentile AQI 751982: 90th percentile AQI 631983: 90th percentile AQI 631984: 90th percentile AQI 621985: 90th percentile AQI 761986: 90th percentile AQI 681987: 90th percentile AQI 751988: 90th percentile AQI 741989: 90th percentile AQI 621990: 90th percentile AQI 671991: 90th percentile AQI 711992: 90th percentile AQI 701993: 90th percentile AQI 611994: 90th percentile AQI 591995: 90th percentile AQI 561996: 90th percentile AQI 581997: 90th percentile AQI 511998: 90th percentile AQI 521999: 90th percentile AQI 822000: 90th percentile AQI 962001: 90th percentile AQI 1022002: 90th percentile AQI 932003: 90th percentile AQI 932004: 90th percentile AQI 912005: 90th percentile AQI 1012006: 90th percentile AQI 762007: 90th percentile AQI 852008: 90th percentile AQI 862009: 90th percentile AQI 902010: 90th percentile AQI 722011: 90th percentile AQI 812012: 90th percentile AQI 682013: 90th percentile AQI 842014: 90th percentile AQI 812015: 90th percentile AQI 812016: 90th percentile AQI 632017: 90th percentile AQI 922018: 90th percentile AQI 742019: 90th percentile AQI 782020: 90th percentile AQI 782021: 90th percentile AQI 742022: 90th percentile AQI 1162023: 90th percentile AQI 792024: 90th percentile AQI 802025: 90th percentile AQI 681980: Median AQI 391981: Median AQI 451982: Median AQI 351983: Median AQI 411984: Median AQI 361985: Median AQI 401986: Median AQI 411987: Median AQI 451988: Median AQI 381989: Median AQI 371990: Median AQI 331991: Median AQI 391992: Median AQI 411993: Median AQI 361994: Median AQI 391995: Median AQI 351996: Median AQI 351997: Median AQI 341998: Median AQI 321999: Median AQI 532000: Median AQI 522001: Median AQI 532002: Median AQI 552003: Median AQI 522004: Median AQI 542005: Median AQI 502006: Median AQI 422007: Median AQI 442008: Median AQI 532009: Median AQI 522010: Median AQI 472011: Median AQI 462012: Median AQI 442013: Median AQI 462014: Median AQI 492015: Median AQI 442016: Median AQI 392017: Median AQI 462018: Median AQI 442019: Median AQI 442020: Median AQI 462021: Median AQI 442022: Median AQI 442023: Median AQI 492024: Median AQI 442025: Median AQI 461980198519901995200020052010201520202025
  • 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
Fine particles (PM2.5)28578%
Ozone8022%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202536520615351004668153PM2.5
2024366219131105104480216PM2.5
202336519015996104979211PM2.5
202236519413251491144116520PM2.5
2021365214131613104474230PM2.5
2020366203149402846781000PM2.5
201936521614180004478117PM2.5
201836521314471004474156PM2.5
2017365200135169414692509PM2.5
201636625610910003963108PM2.5
2015365213137132004481199PM2.5
2014365190158170004981135PM2.5
2013365202142201004684165PM2.5
201236621114780004468149PM2.5
2011365208141151004681151PM2.5
201036520215850004772127PM2.5
2009365160179233005290160PM2.5
2008366171180150005386133PM2.5
2007365217125221004485153PM2.5
2006365233117150004276147PM2.5
20053651831452890050101163PM2.5
2004366151191222005491162PM2.5
2003365169165265005293160PM2.5
2002365141198188005593168PM2.5
200136516316527100053102179PM2.5
2000366172163256005296164PM2.5
1999365162183137005382163PM2.5
199836532430101003252172CO
1997365318470000345197CO
199636631832115003558179CO
19953653115310003556122CO
19943652778530003959136CO
19933652739110003661106CO
19923662679180004170150CO
199136527580100003971117PM10
19903582856760003367119PM10
19893642867710003762106PM10
19883652658676103874203CO
1987365228123113004575192Ozone
198636525597121004168151CO
198536527170222004076157Ozone
19843663016320003662143CO
19833652758640004163126CO
19823652957000003563100CO
198135422211982304575215CO
19803232269430003969136CO

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 Oregon with a similar median AQI in 2025

All monitored counties in Oregon

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