EnviroNearby

Edmonson County, Kentucky air quality history

Daily Air Quality Index summaries from EPA monitors in Edmonson, Kentucky, 1984–2025.

92%
Good days in 2025
36
Median daily AQI, 2025
0
Days above 100 in 2025
356
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Edmonson, Kentucky on 356 days. 328 of those days (92%) were in the Good range, and the median daily AQI was 36. That median is lower than the typical monitored county in Kentucky (median 39 across 25 counties), and lower than the typical monitored U.S. county (40). The main pollutant was ozone on 332 days. Across the years with fuller monitoring, the share of Good days rose: an average of 66% in 1985–1987 versus 90% in 2023–2025.

Years with fewer than 120 monitored days (1984) are shown in the table but left out of comparisons and trend statements.

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%1984: Good 11 of 11 days19841985: Good 255 of 361 days1985: Moderate 75 of 361 days1985: Unhealthy for Sensitive Groups 29 of 361 days1985: Unhealthy 2 of 361 days1986: Good 241 of 350 days1986: Moderate 78 of 350 days1986: Unhealthy for Sensitive Groups 29 of 350 days1986: Unhealthy 2 of 350 days1987: Good 196 of 337 days1987: Moderate 92 of 337 days1987: Unhealthy for Sensitive Groups 39 of 337 days1987: Unhealthy 9 of 337 days1987: Very Unhealthy 1 of 337 days1988: Good 212 of 332 days1988: Moderate 77 of 332 days1988: Unhealthy for Sensitive Groups 25 of 332 days1988: Unhealthy 12 of 332 days1988: Very Unhealthy 6 of 332 days1989: Good 244 of 328 days1989: Moderate 57 of 328 days1989: Unhealthy for Sensitive Groups 26 of 328 days1989: Unhealthy 1 of 328 days19891990: Good 247 of 334 days1990: Moderate 67 of 334 days1990: Unhealthy for Sensitive Groups 18 of 334 days1990: Unhealthy 2 of 334 days1991: Good 276 of 343 days1991: Moderate 60 of 343 days1991: Unhealthy for Sensitive Groups 7 of 343 days1992: Good 245 of 355 days1992: Moderate 102 of 355 days1992: Unhealthy for Sensitive Groups 8 of 355 days1993: Good 228 of 340 days1993: Moderate 108 of 340 days1993: Unhealthy for Sensitive Groups 4 of 340 days1994: Good 210 of 313 days1994: Moderate 92 of 313 days1994: Unhealthy for Sensitive Groups 10 of 313 days1994: Unhealthy 1 of 313 days19941995: Good 213 of 359 days1995: Moderate 121 of 359 days1995: Unhealthy for Sensitive Groups 19 of 359 days1995: Unhealthy 6 of 359 days1996: Good 228 of 364 days1996: Moderate 114 of 364 days1996: Unhealthy for Sensitive Groups 20 of 364 days1996: Unhealthy 2 of 364 days1997: Good 211 of 349 days1997: Moderate 120 of 349 days1997: Unhealthy for Sensitive Groups 15 of 349 days1997: Unhealthy 3 of 349 days1998: Good 191 of 362 days1998: Moderate 122 of 362 days1998: Unhealthy for Sensitive Groups 38 of 362 days1998: Unhealthy 11 of 362 days1999: Good 182 of 360 days1999: Moderate 108 of 360 days1999: Unhealthy for Sensitive Groups 52 of 360 days1999: Unhealthy 18 of 360 days19992000: Good 212 of 361 days2000: Moderate 126 of 361 days2000: Unhealthy for Sensitive Groups 19 of 361 days2000: Unhealthy 4 of 361 days2001: Good 229 of 363 days2001: Moderate 116 of 363 days2001: Unhealthy for Sensitive Groups 17 of 363 days2001: Unhealthy 1 of 363 days2002: Good 241 of 364 days2002: Moderate 103 of 364 days2002: Unhealthy for Sensitive Groups 17 of 364 days2002: Unhealthy 3 of 364 days2003: Good 238 of 363 days2003: Moderate 112 of 363 days2003: Unhealthy for Sensitive Groups 12 of 363 days2003: Unhealthy 1 of 363 days2004: Good 239 of 365 days2004: Moderate 124 of 365 days2004: Unhealthy for Sensitive Groups 2 of 365 days20042005: Good 209 of 364 days2005: Moderate 135 of 364 days2005: Unhealthy for Sensitive Groups 20 of 364 days2006: Good 250 of 365 days2006: Moderate 109 of 365 days2006: Unhealthy for Sensitive Groups 6 of 365 days2007: Good 205 of 364 days2007: Moderate 131 of 364 days2007: Unhealthy for Sensitive Groups 28 of 364 days2008: Good 244 of 365 days2008: Moderate 118 of 365 days2008: Unhealthy for Sensitive Groups 3 of 365 days2009: Good 275 of 352 days2009: Moderate 77 of 352 days20092010: Good 240 of 364 days2010: Moderate 118 of 364 days2010: Unhealthy for Sensitive Groups 6 of 364 days2011: Good 252 of 363 days2011: Moderate 107 of 363 days2011: Unhealthy for Sensitive Groups 4 of 363 days2012: Good 265 of 366 days2012: Moderate 87 of 366 days2012: Unhealthy for Sensitive Groups 13 of 366 days2012: Unhealthy 1 of 366 days2013: Good 306 of 364 days2013: Moderate 57 of 364 days2013: Unhealthy for Sensitive Groups 1 of 364 days2014: Good 294 of 364 days2014: Moderate 70 of 364 days20142015: Good 321 of 365 days2015: Moderate 44 of 365 days2016: Good 296 of 336 days2016: Moderate 40 of 336 days2017: Good 218 of 365 days2017: Moderate 147 of 365 days2018: Good 234 of 365 days2018: Moderate 131 of 365 days2019: Good 225 of 365 days2019: Moderate 140 of 365 days20192020: Good 350 of 365 days2020: Moderate 15 of 365 days2021: Good 327 of 364 days2021: Moderate 37 of 364 days2022: Good 334 of 365 days2022: Moderate 31 of 365 days2023: Good 319 of 363 days2023: Moderate 40 of 363 days2023: Unhealthy for Sensitive Groups 4 of 363 days2024: Good 329 of 364 days2024: Moderate 35 of 364 days20242025: Good 328 of 356 days2025: Moderate 28 of 356 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 year0501001501984: 90th percentile AQI 291985: 90th percentile AQI 971986: 90th percentile AQI 971987: 90th percentile AQI 1221988: 90th percentile AQI 1191989: 90th percentile AQI 971990: 90th percentile AQI 871991: 90th percentile AQI 671992: 90th percentile AQI 741993: 90th percentile AQI 721994: 90th percentile AQI 841995: 90th percentile AQI 931996: 90th percentile AQI 901997: 90th percentile AQI 841998: 90th percentile AQI 1121999: 90th percentile AQI 1292000: 90th percentile AQI 842001: 90th percentile AQI 872002: 90th percentile AQI 842003: 90th percentile AQI 802004: 90th percentile AQI 712005: 90th percentile AQI 882006: 90th percentile AQI 772007: 90th percentile AQI 942008: 90th percentile AQI 772009: 90th percentile AQI 582010: 90th percentile AQI 712011: 90th percentile AQI 672012: 90th percentile AQI 772013: 90th percentile AQI 542014: 90th percentile AQI 582015: 90th percentile AQI 542016: 90th percentile AQI 522017: 90th percentile AQI 592018: 90th percentile AQI 612019: 90th percentile AQI 602020: 90th percentile AQI 462021: 90th percentile AQI 512022: 90th percentile AQI 492023: 90th percentile AQI 522024: 90th percentile AQI 502025: 90th percentile AQI 491984: Median AQI 251985: Median AQI 411986: Median AQI 411987: Median AQI 451988: Median AQI 431989: Median AQI 391990: Median AQI 401991: Median AQI 371992: Median AQI 401993: Median AQI 421994: Median AQI 431995: Median AQI 451996: Median AQI 441997: Median AQI 441998: Median AQI 481999: Median AQI 502000: Median AQI 462001: Median AQI 442002: Median AQI 442003: Median AQI 432004: Median AQI 442005: Median AQI 472006: Median AQI 422007: Median AQI 472008: Median AQI 442009: Median AQI 382010: Median AQI 442011: Median AQI 442012: Median AQI 432013: Median AQI 392014: Median AQI 392015: Median AQI 372016: Median AQI 372017: Median AQI 472018: Median AQI 432019: Median AQI 462020: Median AQI 332021: Median AQI 362022: Median AQI 372023: Median AQI 392024: Median AQI 382025: Median AQI 361984198919941999200420092014201920242025
  • 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
Ozone33293%
Fine particles (PM2.5)247%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025356328280000364977Ozone
2024364329350000385077Ozone
20233633194040003952115Ozone
2022365334310000374984Ozone
2021364327370000365174Ozone
2020365350150000334664Ozone
20193652251400000466077PM2.5
201836523413100004361100PM2.5
20173652181470000475987PM2.5
2016336296400000375297Ozone
2015365321440000375490Ozone
2014364294700000395890Ozone
20133643065710003954105Ozone
201236626587131004377161Ozone
201136325210740004467108Ozone
201036424011860004471126Ozone
2009352275770000385897Ozone
200836524411830004477108Ozone
2007364205131280004794147Ozone
200636525010960004277112Ozone
2005364209135200004788140Ozone
200436523912420004471105Ozone
2003363238112121004380161Ozone
2002364241103173004484187Ozone
2001363229116171004487154Ozone
2000361212126194004684182Ozone
199936018210852180050129200Ozone
199836219112238110048112195Ozone
1997349211120153004484182Ozone
1996364228114202004490172Ozone
1995359213121196004593187Ozone
199431321092101004384154Ozone
199334022810840004272136Ozone
199235524510280004074122Ozone
19913432766070003767139Ozone
199033424767182004087156Ozone
198932824457261003997151Ozone
19883322127725126043119209Ozone
1987337196923991045122221Ozone
198635024178292004197177Ozone
198536125575292004197174Ozone
1984111100000252930Ozone

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 Kentucky with a similar median AQI in 2025

All monitored counties in Kentucky

Source: U.S. EPA AirData, “Annual AQI by County” files for 1984–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem