EnviroNearby

Lucas County, Ohio air quality history

Daily Air Quality Index summaries from EPA monitors in Lucas, Ohio, 1980–2025.

47%
Good days in 2025
52
Median daily AQI, 2025
9
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 Lucas, Ohio on 365 days. 173 of those days (47%) were in the Good range, and the median daily AQI was 52. That median is higher than the typical monitored county in Ohio (median 43 across 36 counties), and higher than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 258 days. Across the years with fuller monitoring, the share of Good days fell: an average of 68% in 1980–1982 versus 50% 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 265 of 366 days1980: Moderate 53 of 366 days1980: Unhealthy for Sensitive Groups 25 of 366 days1980: Unhealthy 20 of 366 days1980: Very Unhealthy 3 of 366 days19801981: Good 252 of 365 days1981: Moderate 65 of 365 days1981: Unhealthy for Sensitive Groups 25 of 365 days1981: Unhealthy 16 of 365 days1981: Very Unhealthy 7 of 365 days1982: Good 231 of 365 days1982: Moderate 73 of 365 days1982: Unhealthy for Sensitive Groups 39 of 365 days1982: Unhealthy 20 of 365 days1982: Very Unhealthy 2 of 365 days1983: Good 262 of 365 days1983: Moderate 57 of 365 days1983: Unhealthy for Sensitive Groups 29 of 365 days1983: Unhealthy 13 of 365 days1983: Very Unhealthy 4 of 365 days1984: Good 267 of 336 days1984: Moderate 55 of 336 days1984: Unhealthy for Sensitive Groups 11 of 336 days1984: Unhealthy 3 of 336 days1985: Good 294 of 365 days1985: Moderate 50 of 365 days1985: Unhealthy for Sensitive Groups 18 of 365 days1985: Unhealthy 3 of 365 days19851986: Good 276 of 365 days1986: Moderate 69 of 365 days1986: Unhealthy for Sensitive Groups 16 of 365 days1986: Unhealthy 4 of 365 days1987: Good 289 of 365 days1987: Moderate 46 of 365 days1987: Unhealthy for Sensitive Groups 25 of 365 days1987: Unhealthy 3 of 365 days1987: Very Unhealthy 2 of 365 days1988: Good 270 of 366 days1988: Moderate 41 of 366 days1988: Unhealthy for Sensitive Groups 27 of 366 days1988: Unhealthy 23 of 366 days1988: Very Unhealthy 5 of 366 days1989: Good 301 of 365 days1989: Moderate 44 of 365 days1989: Unhealthy for Sensitive Groups 12 of 365 days1989: Unhealthy 7 of 365 days1989: Very Unhealthy 1 of 365 days1990: Good 289 of 365 days1990: Moderate 50 of 365 days1990: Unhealthy for Sensitive Groups 23 of 365 days1990: Unhealthy 3 of 365 days19901991: Good 291 of 365 days1991: Moderate 47 of 365 days1991: Unhealthy for Sensitive Groups 21 of 365 days1991: Unhealthy 5 of 365 days1991: Very Unhealthy 1 of 365 days1992: Good 318 of 365 days1992: Moderate 33 of 365 days1992: Unhealthy for Sensitive Groups 12 of 365 days1992: Unhealthy 2 of 365 days1993: Good 305 of 365 days1993: Moderate 41 of 365 days1993: Unhealthy for Sensitive Groups 13 of 365 days1993: Unhealthy 5 of 365 days1993: Very Unhealthy 1 of 365 days1994: Good 280 of 365 days1994: Moderate 58 of 365 days1994: Unhealthy for Sensitive Groups 19 of 365 days1994: Unhealthy 6 of 365 days1994: Very Unhealthy 2 of 365 days1995: Good 281 of 365 days1995: Moderate 58 of 365 days1995: Unhealthy for Sensitive Groups 17 of 365 days1995: Unhealthy 9 of 365 days19951996: Good 283 of 366 days1996: Moderate 53 of 366 days1996: Unhealthy for Sensitive Groups 19 of 366 days1996: Unhealthy 10 of 366 days1996: Very Unhealthy 1 of 366 days1997: Good 295 of 365 days1997: Moderate 52 of 365 days1997: Unhealthy for Sensitive Groups 15 of 365 days1997: Unhealthy 3 of 365 days1998: Good 280 of 365 days1998: Moderate 61 of 365 days1998: Unhealthy for Sensitive Groups 18 of 365 days1998: Unhealthy 6 of 365 days1999: Good 151 of 365 days1999: Moderate 183 of 365 days1999: Unhealthy for Sensitive Groups 27 of 365 days1999: Unhealthy 2 of 365 days1999: Very Unhealthy 2 of 365 days2000: Good 144 of 365 days2000: Moderate 203 of 365 days2000: Unhealthy for Sensitive Groups 17 of 365 days2000: Unhealthy 1 of 365 days20002001: Good 81 of 365 days2001: Moderate 244 of 365 days2001: Unhealthy for Sensitive Groups 31 of 365 days2001: Unhealthy 9 of 365 days2002: Good 74 of 365 days2002: Moderate 256 of 365 days2002: Unhealthy for Sensitive Groups 22 of 365 days2002: Unhealthy 13 of 365 days2003: Good 80 of 365 days2003: Moderate 254 of 365 days2003: Unhealthy for Sensitive Groups 25 of 365 days2003: Unhealthy 6 of 365 days2004: Good 233 of 366 days2004: Moderate 118 of 366 days2004: Unhealthy for Sensitive Groups 14 of 366 days2004: Unhealthy 1 of 366 days2005: Good 201 of 365 days2005: Moderate 128 of 365 days2005: Unhealthy for Sensitive Groups 30 of 365 days2005: Unhealthy 5 of 365 days2005: Very Unhealthy 1 of 365 days20052006: Good 238 of 365 days2006: Moderate 117 of 365 days2006: Unhealthy for Sensitive Groups 10 of 365 days2007: Good 232 of 365 days2007: Moderate 117 of 365 days2007: Unhealthy for Sensitive Groups 12 of 365 days2007: Unhealthy 4 of 365 days2008: Good 130 of 366 days2008: Moderate 223 of 366 days2008: Unhealthy for Sensitive Groups 13 of 366 days2009: Good 223 of 365 days2009: Moderate 135 of 365 days2009: Unhealthy for Sensitive Groups 6 of 365 days2009: Unhealthy 1 of 365 days2010: Good 155 of 360 days2010: Moderate 197 of 360 days2010: Unhealthy for Sensitive Groups 7 of 360 days2010: Unhealthy 1 of 360 days20102011: Good 165 of 365 days2011: Moderate 193 of 365 days2011: Unhealthy for Sensitive Groups 7 of 365 days2012: Good 145 of 366 days2012: Moderate 197 of 366 days2012: Unhealthy for Sensitive Groups 21 of 366 days2012: Unhealthy 3 of 366 days2013: Good 171 of 361 days2013: Moderate 189 of 361 days2013: Unhealthy for Sensitive Groups 1 of 361 days2014: Good 155 of 362 days2014: Moderate 202 of 362 days2014: Unhealthy for Sensitive Groups 5 of 362 days2015: Good 200 of 365 days2015: Moderate 164 of 365 days2015: Unhealthy for Sensitive Groups 1 of 365 days20152016: Good 199 of 334 days2016: Moderate 131 of 334 days2016: Unhealthy for Sensitive Groups 4 of 334 days2017: Good 217 of 362 days2017: Moderate 141 of 362 days2017: Unhealthy for Sensitive Groups 4 of 362 days2018: Good 215 of 348 days2018: Moderate 123 of 348 days2018: Unhealthy for Sensitive Groups 9 of 348 days2018: Unhealthy 1 of 348 days2019: Good 224 of 351 days2019: Moderate 126 of 351 days2019: Unhealthy for Sensitive Groups 1 of 351 days2020: Good 250 of 354 days2020: Moderate 96 of 354 days2020: Unhealthy for Sensitive Groups 8 of 354 days20202021: Good 221 of 364 days2021: Moderate 138 of 364 days2021: Unhealthy for Sensitive Groups 5 of 364 days2022: Good 240 of 362 days2022: Moderate 117 of 362 days2022: Unhealthy for Sensitive Groups 5 of 362 days2023: Good 217 of 365 days2023: Moderate 133 of 365 days2023: Unhealthy for Sensitive Groups 13 of 365 days2023: Unhealthy 2 of 365 days2024: Good 155 of 366 days2024: Moderate 207 of 366 days2024: Unhealthy for Sensitive Groups 4 of 366 days2025: Good 173 of 365 days2025: Moderate 183 of 365 days2025: Unhealthy for Sensitive Groups 8 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 1151981: 90th percentile AQI 1261982: 90th percentile AQI 1291983: 90th percentile AQI 1151984: 90th percentile AQI 771985: 90th percentile AQI 741986: 90th percentile AQI 801987: 90th percentile AQI 871988: 90th percentile AQI 1361989: 90th percentile AQI 641990: 90th percentile AQI 841991: 90th percentile AQI 901992: 90th percentile AQI 581993: 90th percentile AQI 771994: 90th percentile AQI 971995: 90th percentile AQI 871996: 90th percentile AQI 871997: 90th percentile AQI 771998: 90th percentile AQI 841999: 90th percentile AQI 952000: 90th percentile AQI 902001: 90th percentile AQI 1042002: 90th percentile AQI 1002003: 90th percentile AQI 982004: 90th percentile AQI 822005: 90th percentile AQI 1002006: 90th percentile AQI 742007: 90th percentile AQI 842008: 90th percentile AQI 842009: 90th percentile AQI 772010: 90th percentile AQI 772011: 90th percentile AQI 772012: 90th percentile AQI 842013: 90th percentile AQI 652014: 90th percentile AQI 712015: 90th percentile AQI 682016: 90th percentile AQI 642017: 90th percentile AQI 652018: 90th percentile AQI 662019: 90th percentile AQI 642020: 90th percentile AQI 652021: 90th percentile AQI 692022: 90th percentile AQI 632023: 90th percentile AQI 792024: 90th percentile AQI 742025: 90th percentile AQI 721980: Median AQI 381981: Median AQI 401982: Median AQI 431983: Median AQI 381984: Median AQI 351985: Median AQI 341986: Median AQI 361987: Median AQI 331988: Median AQI 341989: Median AQI 301990: Median AQI 331991: Median AQI 321992: Median AQI 311993: Median AQI 311994: Median AQI 351995: Median AQI 331996: Median AQI 331997: Median AQI 301998: Median AQI 341999: Median AQI 562000: Median AQI 572001: Median AQI 632002: Median AQI 612003: Median AQI 602004: Median AQI 432005: Median AQI 462006: Median AQI 422007: Median AQI 432008: Median AQI 562009: Median AQI 452010: Median AQI 532011: Median AQI 522012: Median AQI 542013: Median AQI 522014: Median AQI 532015: Median AQI 482016: Median AQI 462017: Median AQI 462018: Median AQI 452019: Median AQI 442020: Median AQI 422021: Median AQI 462022: Median AQI 442023: Median AQI 452024: Median AQI 522025: Median AQI 521980198519901995200020052010201520202025
  • 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)25871%
Ozone10729%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202536517318381005272154PM2.5
202436615520740005274119PM2.5
2023365217133132004579190PM2.5
202236224011750004463119PM2.5
202136422113850004669122PM2.5
20203542509680004265136PM2.5
201935122412610004464143PM2.5
201834821512391004566151PM2.5
201736221714140004665126PM2.5
201633419913140004664112PM2.5
201536520016410004868113PM2.5
201436215520250005371135PM2.5
201336117118910005265108PM2.5
2012366145197213005484172PM2.5
201136516519370005277147PM2.5
201036015519771005377164PM2.5
200936522313561004577154Ozone
2008366130223130005684129PM2.5
2007365232117124004384185Ozone
2006365238117100004274136Ozone
20053652011283051046100203Ozone
2004366233118141004382161Ozone
200336580254256006098197PM2.5
20023657425622130061100195PM2.5
2001365812443190063104190PM2.5
2000365144203171005790156PM2.5
1999365151183272205695207PM2.5
199836528061186003484177Ozone
199736529552153003077192Ozone
1996366283531910103387207Ozone
199536528158179003387197Ozone
199436528058196203597219Ozone
199336530541135103177209Ozone
199236531833122003158174Ozone
199136529147215103290204Ozone
199036528950233003384159Ozone
198936530144127103064209Ozone
19883662704127235034136232Ozone
198736528946253203387212CO
198636527669164003680172Ozone
198536529450183003474169Ozone
198433626755113003577190Ozone
19833652625729134038115210Ozone
19823652317339202043129205Ozone
19813652526525167040126209Ozone
19803662655325203038115208Ozone

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 Ohio with a similar median AQI in 2025

All monitored counties in Ohio

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