EnviroNearby

Pulaski County, Arkansas air quality history

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

31%
Good days in 2025
55
Median daily AQI, 2025
4
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, Arkansas on 365 days. 114 of those days (31%) were in the Good range, and the median daily AQI was 55. That median is higher than the typical monitored county in Arkansas (median 46 across 11 counties), and higher than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 284 days. Across the years with fuller monitoring, the share of Good days fell: an average of 72% in 1980–1982 versus 32% 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 55 of 366 days1980: Unhealthy for Sensitive Groups 28 of 366 days1980: Unhealthy 17 of 366 days1980: Very Unhealthy 1 of 366 days19801981: Good 239 of 365 days1981: Moderate 88 of 365 days1981: Unhealthy for Sensitive Groups 37 of 365 days1981: Unhealthy 1 of 365 days1982: Good 284 of 365 days1982: Moderate 73 of 365 days1982: Unhealthy for Sensitive Groups 7 of 365 days1982: Unhealthy 1 of 365 days1983: Good 257 of 365 days1983: Moderate 63 of 365 days1983: Unhealthy for Sensitive Groups 39 of 365 days1983: Unhealthy 6 of 365 days1984: Good 258 of 366 days1984: Moderate 77 of 366 days1984: Unhealthy for Sensitive Groups 27 of 366 days1984: Unhealthy 4 of 366 days1985: Good 288 of 365 days1985: Moderate 60 of 365 days1985: Unhealthy for Sensitive Groups 13 of 365 days1985: Unhealthy 4 of 365 days19851986: Good 266 of 365 days1986: Moderate 72 of 365 days1986: Unhealthy for Sensitive Groups 19 of 365 days1986: Unhealthy 7 of 365 days1986: Very Unhealthy 1 of 365 days1987: Good 235 of 365 days1987: Moderate 93 of 365 days1987: Unhealthy for Sensitive Groups 26 of 365 days1987: Unhealthy 11 of 365 days1988: Good 250 of 366 days1988: Moderate 77 of 366 days1988: Unhealthy for Sensitive Groups 32 of 366 days1988: Unhealthy 7 of 366 days1989: Good 274 of 365 days1989: Moderate 76 of 365 days1989: Unhealthy for Sensitive Groups 14 of 365 days1989: Unhealthy 1 of 365 days1990: Good 270 of 365 days1990: Moderate 58 of 365 days1990: Unhealthy for Sensitive Groups 36 of 365 days1990: Very Unhealthy 1 of 365 days19901991: Good 283 of 365 days1991: Moderate 56 of 365 days1991: Unhealthy for Sensitive Groups 24 of 365 days1991: Unhealthy 2 of 365 days1992: Good 280 of 366 days1992: Moderate 76 of 366 days1992: Unhealthy for Sensitive Groups 10 of 366 days1993: Good 291 of 365 days1993: Moderate 69 of 365 days1993: Unhealthy for Sensitive Groups 4 of 365 days1993: Unhealthy 1 of 365 days1994: Good 279 of 365 days1994: Moderate 72 of 365 days1994: Unhealthy for Sensitive Groups 12 of 365 days1994: Unhealthy 2 of 365 days1995: Good 255 of 365 days1995: Moderate 68 of 365 days1995: Unhealthy for Sensitive Groups 36 of 365 days1995: Unhealthy 6 of 365 days19951996: Good 286 of 366 days1996: Moderate 65 of 366 days1996: Unhealthy for Sensitive Groups 14 of 366 days1996: Unhealthy 1 of 366 days1997: Good 253 of 365 days1997: Moderate 92 of 365 days1997: Unhealthy for Sensitive Groups 19 of 365 days1997: Unhealthy 1 of 365 days1998: Good 269 of 365 days1998: Moderate 70 of 365 days1998: Unhealthy for Sensitive Groups 23 of 365 days1998: Unhealthy 3 of 365 days1999: Good 186 of 365 days1999: Moderate 150 of 365 days1999: Unhealthy for Sensitive Groups 25 of 365 days1999: Unhealthy 4 of 365 days2000: Good 51 of 366 days2000: Moderate 274 of 366 days2000: Unhealthy for Sensitive Groups 27 of 366 days2000: Unhealthy 14 of 366 days20002001: Good 68 of 365 days2001: Moderate 264 of 365 days2001: Unhealthy for Sensitive Groups 29 of 365 days2001: Unhealthy 4 of 365 days2002: Good 87 of 365 days2002: Moderate 247 of 365 days2002: Unhealthy for Sensitive Groups 21 of 365 days2002: Unhealthy 10 of 365 days2003: Good 68 of 365 days2003: Moderate 283 of 365 days2003: Unhealthy for Sensitive Groups 13 of 365 days2003: Unhealthy 1 of 365 days2004: Good 86 of 366 days2004: Moderate 268 of 366 days2004: Unhealthy for Sensitive Groups 11 of 366 days2004: Unhealthy 1 of 366 days2005: Good 70 of 365 days2005: Moderate 251 of 365 days2005: Unhealthy for Sensitive Groups 40 of 365 days2005: Unhealthy 4 of 365 days20052006: Good 80 of 365 days2006: Moderate 264 of 365 days2006: Unhealthy for Sensitive Groups 15 of 365 days2006: Unhealthy 6 of 365 days2007: Good 80 of 365 days2007: Moderate 263 of 365 days2007: Unhealthy for Sensitive Groups 18 of 365 days2007: Unhealthy 3 of 365 days2007: Very Unhealthy 1 of 365 days2008: Good 99 of 366 days2008: Moderate 263 of 366 days2008: Unhealthy for Sensitive Groups 4 of 366 days2009: Good 132 of 365 days2009: Moderate 229 of 365 days2009: Unhealthy for Sensitive Groups 4 of 365 days2010: Good 74 of 365 days2010: Moderate 283 of 365 days2010: Unhealthy for Sensitive Groups 8 of 365 days20102011: Good 63 of 365 days2011: Moderate 284 of 365 days2011: Unhealthy for Sensitive Groups 18 of 365 days2012: Good 77 of 366 days2012: Moderate 272 of 366 days2012: Unhealthy for Sensitive Groups 17 of 366 days2013: Good 124 of 365 days2013: Moderate 238 of 365 days2013: Unhealthy for Sensitive Groups 3 of 365 days2014: Good 149 of 365 days2014: Moderate 213 of 365 days2014: Unhealthy for Sensitive Groups 3 of 365 days2015: Good 151 of 365 days2015: Moderate 214 of 365 days20152016: Good 172 of 366 days2016: Moderate 194 of 366 days2017: Good 161 of 365 days2017: Moderate 203 of 365 days2017: Unhealthy for Sensitive Groups 1 of 365 days2018: Good 164 of 365 days2018: Moderate 199 of 365 days2018: Unhealthy for Sensitive Groups 2 of 365 days2019: Good 145 of 365 days2019: Moderate 220 of 365 days2020: Good 186 of 366 days2020: Moderate 178 of 366 days2020: Unhealthy for Sensitive Groups 2 of 366 days20202021: Good 114 of 365 days2021: Moderate 249 of 365 days2021: Unhealthy for Sensitive Groups 2 of 365 days2022: Good 153 of 365 days2022: Moderate 211 of 365 days2022: Unhealthy for Sensitive Groups 1 of 365 days2023: Good 122 of 365 days2023: Moderate 238 of 365 days2023: Unhealthy for Sensitive Groups 4 of 365 days2023: Unhealthy 1 of 365 days2024: Good 118 of 366 days2024: Moderate 243 of 366 days2024: Unhealthy for Sensitive Groups 5 of 366 days2025: Good 114 of 365 days2025: Moderate 247 of 365 days2025: Unhealthy for Sensitive Groups 4 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 1011982: 90th percentile AQI 711983: 90th percentile AQI 1051984: 90th percentile AQI 971985: 90th percentile AQI 741986: 90th percentile AQI 901987: 90th percentile AQI 1011988: 90th percentile AQI 1011989: 90th percentile AQI 741990: 90th percentile AQI 1011991: 90th percentile AQI 871992: 90th percentile AQI 641993: 90th percentile AQI 741994: 90th percentile AQI 771995: 90th percentile AQI 1011996: 90th percentile AQI 671997: 90th percentile AQI 871998: 90th percentile AQI 901999: 90th percentile AQI 972000: 90th percentile AQI 1052001: 90th percentile AQI 1002002: 90th percentile AQI 1002003: 90th percentile AQI 842004: 90th percentile AQI 802005: 90th percentile AQI 1012006: 90th percentile AQI 872007: 90th percentile AQI 882008: 90th percentile AQI 742009: 90th percentile AQI 722010: 90th percentile AQI 802011: 90th percentile AQI 842012: 90th percentile AQI 842013: 90th percentile AQI 732014: 90th percentile AQI 702015: 90th percentile AQI 692016: 90th percentile AQI 642017: 90th percentile AQI 642018: 90th percentile AQI 662019: 90th percentile AQI 642020: 90th percentile AQI 642021: 90th percentile AQI 732022: 90th percentile AQI 672023: 90th percentile AQI 792024: 90th percentile AQI 752025: 90th percentile AQI 691980: Median AQI 381981: Median AQI 431982: Median AQI 371983: Median AQI 411984: Median AQI 401985: Median AQI 391986: Median AQI 421987: Median AQI 441988: Median AQI 421989: Median AQI 411990: Median AQI 411991: Median AQI 391992: Median AQI 401993: Median AQI 381994: Median AQI 401995: Median AQI 421996: Median AQI 401997: Median AQI 411998: Median AQI 401999: Median AQI 502000: Median AQI 662001: Median AQI 632002: Median AQI 582003: Median AQI 612004: Median AQI 582005: Median AQI 632006: Median AQI 592007: Median AQI 592008: Median AQI 572009: Median AQI 542010: Median AQI 592011: Median AQI 592012: Median AQI 582013: Median AQI 552014: Median AQI 532015: Median AQI 532016: Median AQI 522017: Median AQI 522018: Median AQI 522019: Median AQI 532020: Median AQI 502021: Median AQI 542022: Median AQI 522023: Median AQI 552024: Median AQI 552025: Median AQI 551980198519901995200020052010201520202025
  • 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)28478%
Ozone7922%
Nitrogen dioxide (NO₂)21%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202536511424740005569138PM2.5
202436611824350005575147PM2.5
202336512223841005579174PM2.5
202236515321110005267115PM2.5
202136511424920005473112PM2.5
202036618617820005064132PM2.5
20193651452200000536481PM2.5
201836516419920005266122PM2.5
201736516120310005264115PM2.5
201636617219400005264100PM2.5
201536515121400005369100PM2.5
201436514921330005370115PM2.5
201336512423830005573108PM2.5
201236677272170005884150PM2.5
201136563284180005984147PM2.5
20103657428380005980133PM2.5
200936513222940005472150PM2.5
20083669926340005774147PM2.5
200736580263183105988259PM2.5
200636580264156005987166PM2.5
2005365702514040063101169PM2.5
200436686268111005880151PM2.5
200336568283131006184151PM2.5
20023658724721100058100164PM2.5
2001365682642940063100156PM2.5
20003665127427140066105200PM2.5
1999365186150254005097182Ozone
199836526970233004090168Ozone
199736525392191004187151Ozone
199636628665141004067154Ozone
1995365255683660042101187Ozone
199436527972122004077154Ozone
19933652916941003874156Ozone
199236628076100004064129Ozone
199136528356242003987164Ozone
1990365270583601041101206Ozone
198936527476141004174161Ozone
1988366250773270042101190Ozone
19873652359326110044101185Ozone
198636526672197104290202Ozone
198536528860134003974174Ozone
198436625877274004097164Ozone
1983365257633960041105182Ozone
19823652847371003771190Ozone
1981365239883710043101174Ozone
19803662655528171038115202Ozone

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 Arkansas with a similar median AQI in 2025

All monitored counties in Arkansas

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