EnviroNearby

Pulaski County, Kentucky air quality history

Daily Air Quality Index summaries from EPA monitors in Pulaski, Kentucky, 1980–2025.

81%
Good days in 2025
40
Median daily AQI, 2025
0
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 Pulaski, Kentucky on 365 days. 297 of those days (81%) were in the Good range, and the median daily AQI was 40. That median is about the same as the typical monitored county in Kentucky (median 39 across 25 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 206 days. Across the years with fuller monitoring, the share of Good days rose: an average of 72% in 1980–1982 versus 75% 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 185 of 216 days1980: Moderate 28 of 216 days1980: Unhealthy for Sensitive Groups 3 of 216 days19801981: Good 126 of 195 days1981: Moderate 59 of 195 days1981: Unhealthy for Sensitive Groups 7 of 195 days1981: Unhealthy 3 of 195 days1982: Good 118 of 177 days1982: Moderate 50 of 177 days1982: Unhealthy for Sensitive Groups 9 of 177 days1983: Good 113 of 178 days1983: Moderate 47 of 178 days1983: Unhealthy for Sensitive Groups 15 of 178 days1983: Unhealthy 3 of 178 days1992: Good 173 of 215 days1992: Moderate 39 of 215 days1992: Unhealthy for Sensitive Groups 3 of 215 days1993: Good 167 of 239 days1993: Moderate 61 of 239 days1993: Unhealthy for Sensitive Groups 10 of 239 days1993: Unhealthy 1 of 239 days19931994: Good 168 of 236 days1994: Moderate 59 of 236 days1994: Unhealthy for Sensitive Groups 7 of 236 days1994: Unhealthy 2 of 236 days1995: Good 147 of 238 days1995: Moderate 73 of 238 days1995: Unhealthy for Sensitive Groups 16 of 238 days1995: Unhealthy 2 of 238 days1996: Good 195 of 238 days1996: Moderate 38 of 238 days1996: Unhealthy for Sensitive Groups 5 of 238 days1997: Good 181 of 237 days1997: Moderate 51 of 237 days1997: Unhealthy for Sensitive Groups 5 of 237 days1998: Good 129 of 235 days1998: Moderate 68 of 235 days1998: Unhealthy for Sensitive Groups 35 of 235 days1998: Unhealthy 3 of 235 days19981999: Good 100 of 235 days1999: Moderate 76 of 235 days1999: Unhealthy for Sensitive Groups 47 of 235 days1999: Unhealthy 12 of 235 days2000: Good 149 of 263 days2000: Moderate 89 of 263 days2000: Unhealthy for Sensitive Groups 21 of 263 days2000: Unhealthy 4 of 263 days2001: Good 182 of 265 days2001: Moderate 69 of 265 days2001: Unhealthy for Sensitive Groups 14 of 265 days2002: Good 197 of 265 days2002: Moderate 51 of 265 days2002: Unhealthy for Sensitive Groups 15 of 265 days2002: Unhealthy 2 of 265 days2003: Good 207 of 265 days2003: Moderate 53 of 265 days2003: Unhealthy for Sensitive Groups 5 of 265 days20032004: Good 213 of 265 days2004: Moderate 52 of 265 days2005: Good 176 of 263 days2005: Moderate 76 of 263 days2005: Unhealthy for Sensitive Groups 11 of 263 days2006: Good 206 of 254 days2006: Moderate 48 of 254 days2007: Good 161 of 244 days2007: Moderate 75 of 244 days2007: Unhealthy for Sensitive Groups 8 of 244 days2008: Good 190 of 244 days2008: Moderate 53 of 244 days2008: Unhealthy for Sensitive Groups 1 of 244 days20082009: Good 223 of 245 days2009: Moderate 22 of 245 days2010: Good 224 of 298 days2010: Moderate 74 of 298 days2011: Good 157 of 304 days2011: Moderate 143 of 304 days2011: Unhealthy for Sensitive Groups 4 of 304 days2012: Good 191 of 277 days2012: Moderate 81 of 277 days2012: Unhealthy for Sensitive Groups 5 of 277 days2013: Good 226 of 285 days2013: Moderate 59 of 285 days20132014: Good 203 of 286 days2014: Moderate 83 of 286 days2015: Good 211 of 263 days2015: Moderate 52 of 263 days2016: Good 224 of 278 days2016: Moderate 54 of 278 days2017: Good 243 of 282 days2017: Moderate 39 of 282 days2018: Good 224 of 282 days2018: Moderate 58 of 282 days20182019: Good 251 of 282 days2019: Moderate 31 of 282 days2020: Good 246 of 283 days2020: Moderate 37 of 283 days2021: Good 229 of 361 days2021: Moderate 131 of 361 days2021: Unhealthy for Sensitive Groups 1 of 361 days2022: Good 259 of 359 days2022: Moderate 100 of 359 days2023: Good 232 of 363 days2023: Moderate 129 of 363 days2023: Unhealthy for Sensitive Groups 2 of 363 days20232024: Good 292 of 366 days2024: Moderate 74 of 366 days2025: Good 297 of 365 days2025: Moderate 68 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 581981: 90th percentile AQI 901982: 90th percentile AQI 841983: 90th percentile AQI 1051992: 90th percentile AQI 611993: 90th percentile AQI 801994: 90th percentile AQI 841995: 90th percentile AQI 931996: 90th percentile AQI 711997: 90th percentile AQI 741998: 90th percentile AQI 1121999: 90th percentile AQI 1362000: 90th percentile AQI 1002001: 90th percentile AQI 802002: 90th percentile AQI 872003: 90th percentile AQI 712004: 90th percentile AQI 642005: 90th percentile AQI 842006: 90th percentile AQI 642007: 90th percentile AQI 802008: 90th percentile AQI 642009: 90th percentile AQI 502010: 90th percentile AQI 622011: 90th percentile AQI 772012: 90th percentile AQI 712013: 90th percentile AQI 572014: 90th percentile AQI 602015: 90th percentile AQI 562016: 90th percentile AQI 562017: 90th percentile AQI 532018: 90th percentile AQI 572019: 90th percentile AQI 522020: 90th percentile AQI 522021: 90th percentile AQI 622022: 90th percentile AQI 572023: 90th percentile AQI 612024: 90th percentile AQI 542025: 90th percentile AQI 541980: Median AQI 391981: Median AQI 461982: Median AQI 441983: Median AQI 451992: Median AQI 381993: Median AQI 441994: Median AQI 421995: Median AQI 461996: Median AQI 381997: Median AQI 401998: Median AQI 481999: Median AQI 612000: Median AQI 482001: Median AQI 442002: Median AQI 412003: Median AQI 422004: Median AQI 412005: Median AQI 442006: Median AQI 402007: Median AQI 452008: Median AQI 442009: Median AQI 372010: Median AQI 442011: Median AQI 502012: Median AQI 442013: Median AQI 422014: Median AQI 432015: Median AQI 392016: Median AQI 412017: Median AQI 402018: Median AQI 392019: Median AQI 412020: Median AQI 382021: Median AQI 452022: Median AQI 422023: Median AQI 452024: Median AQI 412025: Median AQI 40198019931998200320082013201820232025
  • 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)20656%
Ozone15944%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025365297680000405473PM2.5
2024366292740000415468PM2.5
202336323212920004561120PM2.5
20223592591000000425782PM2.5
202136122913110004562101PM2.5
2020283246370000385277Ozone
2019282251310000415267Ozone
2018282224580000395774Ozone
2017282243390000405377Ozone
2016278224540000415690Ozone
2015263211520000395680Ozone
20142862038300004360100Ozone
2013285226590000425780Ozone
20122771918150004471133Ozone
201130415714340005077144Ozone
20102982247400004462100Ozone
2009245223220000375084Ozone
20082441905310004464105Ozone
20072441617580004580147Ozone
2006254206480000406487Ozone
200526317676110004484126Ozone
2004265213520000416493Ozone
20032652075350004271122Ozone
200226519751152004187166Ozone
200126518269140004480129Ozone
2000263149892140048100169Ozone
19992351007647120061136182Ozone
1998235129683530048112172Ozone
19972371815150004074140Ozone
19962381953850003871115Ozone
199523814773162004693200Ozone
19942361685972004284200Ozone
199323916761101004480151Ozone
19922151733930003861140Ozone
1983178113471530045105159Ozone
19821771185090004484143Ozone
19811951265973004690161Ozone
19802161852830003958112Ozone

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 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