EnviroNearby

Wyandotte County, Kansas air quality history

Daily Air Quality Index summaries from EPA monitors in Wyandotte, Kansas, 1980–2025.

62%
Good days in 2025
45
Median daily AQI, 2025
5
Days above 100 in 2025
352
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Wyandotte, Kansas on 352 days. 218 of those days (62%) were in the Good range, and the median daily AQI was 45. That median is about the same as the typical monitored county in Kansas (median 44 across 11 counties), and higher than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 188 days. Across the years with fuller monitoring, the share of Good days fell: an average of 83% 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 326 of 366 days1980: Moderate 40 of 366 days19801981: Good 284 of 365 days1981: Moderate 69 of 365 days1981: Unhealthy for Sensitive Groups 10 of 365 days1981: Unhealthy 2 of 365 days1982: Good 300 of 365 days1982: Moderate 58 of 365 days1982: Unhealthy for Sensitive Groups 5 of 365 days1982: Unhealthy 2 of 365 days1983: Good 296 of 365 days1983: Moderate 60 of 365 days1983: Unhealthy for Sensitive Groups 8 of 365 days1983: Unhealthy 1 of 365 days1984: Good 303 of 366 days1984: Moderate 50 of 366 days1984: Unhealthy for Sensitive Groups 11 of 366 days1984: Unhealthy 2 of 366 days1985: Good 275 of 365 days1985: Moderate 86 of 365 days1985: Unhealthy for Sensitive Groups 4 of 365 days19851986: Good 215 of 365 days1986: Moderate 136 of 365 days1986: Unhealthy for Sensitive Groups 12 of 365 days1986: Unhealthy 1 of 365 days1986: Very Unhealthy 1 of 365 days1987: Good 231 of 365 days1987: Moderate 122 of 365 days1987: Unhealthy for Sensitive Groups 10 of 365 days1987: Unhealthy 2 of 365 days1988: Good 275 of 366 days1988: Moderate 78 of 366 days1988: Unhealthy for Sensitive Groups 11 of 366 days1988: Unhealthy 2 of 366 days1989: Good 308 of 365 days1989: Moderate 55 of 365 days1989: Unhealthy for Sensitive Groups 1 of 365 days1989: Very Unhealthy 1 of 365 days1990: Good 315 of 365 days1990: Moderate 46 of 365 days1990: Unhealthy for Sensitive Groups 4 of 365 days19901991: Good 298 of 365 days1991: Moderate 67 of 365 days1992: Good 299 of 366 days1992: Moderate 64 of 366 days1992: Unhealthy for Sensitive Groups 2 of 366 days1992: Unhealthy 1 of 366 days1993: Good 306 of 365 days1993: Moderate 56 of 365 days1993: Unhealthy for Sensitive Groups 2 of 365 days1993: Unhealthy 1 of 365 days1994: Good 284 of 365 days1994: Moderate 75 of 365 days1994: Unhealthy for Sensitive Groups 6 of 365 days1995: Good 199 of 365 days1995: Moderate 98 of 365 days1995: Unhealthy for Sensitive Groups 58 of 365 days1995: Unhealthy 9 of 365 days1995: Very Unhealthy 1 of 365 days19951996: Good 200 of 366 days1996: Moderate 117 of 366 days1996: Unhealthy for Sensitive Groups 45 of 366 days1996: Unhealthy 4 of 366 days1997: Good 244 of 365 days1997: Moderate 89 of 365 days1997: Unhealthy for Sensitive Groups 29 of 365 days1997: Unhealthy 3 of 365 days1998: Good 241 of 365 days1998: Moderate 100 of 365 days1998: Unhealthy for Sensitive Groups 19 of 365 days1998: Unhealthy 4 of 365 days1998: Very Unhealthy 1 of 365 days1999: Good 219 of 365 days1999: Moderate 134 of 365 days1999: Unhealthy for Sensitive Groups 12 of 365 days2000: Good 207 of 366 days2000: Moderate 138 of 366 days2000: Unhealthy for Sensitive Groups 17 of 366 days2000: Unhealthy 4 of 366 days20002001: Good 227 of 365 days2001: Moderate 125 of 365 days2001: Unhealthy for Sensitive Groups 12 of 365 days2001: Unhealthy 1 of 365 days2002: Good 204 of 363 days2002: Moderate 142 of 363 days2002: Unhealthy for Sensitive Groups 15 of 363 days2002: Unhealthy 2 of 363 days2003: Good 202 of 364 days2003: Moderate 138 of 364 days2003: Unhealthy for Sensitive Groups 22 of 364 days2003: Unhealthy 2 of 364 days2004: Good 248 of 366 days2004: Moderate 115 of 366 days2004: Unhealthy for Sensitive Groups 3 of 366 days2005: Good 222 of 365 days2005: Moderate 123 of 365 days2005: Unhealthy for Sensitive Groups 17 of 365 days2005: Unhealthy 2 of 365 days2005: Very Unhealthy 1 of 365 days20052006: Good 212 of 365 days2006: Moderate 134 of 365 days2006: Unhealthy for Sensitive Groups 17 of 365 days2006: Unhealthy 2 of 365 days2007: Good 160 of 365 days2007: Moderate 195 of 365 days2007: Unhealthy for Sensitive Groups 10 of 365 days2008: Good 132 of 366 days2008: Moderate 234 of 366 days2009: Good 193 of 365 days2009: Moderate 170 of 365 days2009: Unhealthy for Sensitive Groups 2 of 365 days2010: Good 171 of 365 days2010: Moderate 194 of 365 days20102011: Good 124 of 365 days2011: Moderate 239 of 365 days2011: Unhealthy for Sensitive Groups 2 of 365 days2012: Good 116 of 361 days2012: Moderate 225 of 361 days2012: Unhealthy for Sensitive Groups 19 of 361 days2012: Unhealthy 1 of 361 days2013: Good 138 of 365 days2013: Moderate 227 of 365 days2014: Good 158 of 365 days2014: Moderate 205 of 365 days2014: Unhealthy for Sensitive Groups 2 of 365 days2015: Good 149 of 365 days2015: Moderate 214 of 365 days2015: Unhealthy for Sensitive Groups 2 of 365 days20152016: Good 208 of 365 days2016: Moderate 155 of 365 days2016: Unhealthy for Sensitive Groups 2 of 365 days2017: Good 186 of 364 days2017: Moderate 177 of 364 days2017: Unhealthy for Sensitive Groups 1 of 364 days2018: Good 200 of 365 days2018: Moderate 162 of 365 days2018: Unhealthy for Sensitive Groups 2 of 365 days2018: Unhealthy 1 of 365 days2019: Good 239 of 365 days2019: Moderate 125 of 365 days2019: Unhealthy for Sensitive Groups 1 of 365 days2020: Good 146 of 366 days2020: Moderate 215 of 366 days2020: Unhealthy for Sensitive Groups 5 of 366 days20202021: Good 154 of 365 days2021: Moderate 204 of 365 days2021: Unhealthy for Sensitive Groups 7 of 365 days2022: Good 179 of 365 days2022: Moderate 184 of 365 days2022: Unhealthy for Sensitive Groups 2 of 365 days2023: Good 174 of 365 days2023: Moderate 174 of 365 days2023: Unhealthy for Sensitive Groups 15 of 365 days2023: Unhealthy 2 of 365 days2024: Good 214 of 365 days2024: Moderate 148 of 365 days2024: Unhealthy for Sensitive Groups 3 of 365 days2025: Good 218 of 352 days2025: Moderate 129 of 352 days2025: Unhealthy for Sensitive Groups 3 of 352 days2025: Unhealthy 1 of 352 days2025: Very Unhealthy 1 of 352 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 511981: 90th percentile AQI 771982: 90th percentile AQI 641983: 90th percentile AQI 671984: 90th percentile AQI 711985: 90th percentile AQI 631986: 90th percentile AQI 781987: 90th percentile AQI 801988: 90th percentile AQI 741989: 90th percentile AQI 551990: 90th percentile AQI 541991: 90th percentile AQI 551992: 90th percentile AQI 581993: 90th percentile AQI 571994: 90th percentile AQI 671995: 90th percentile AQI 1151996: 90th percentile AQI 1041997: 90th percentile AQI 901998: 90th percentile AQI 901999: 90th percentile AQI 802000: 90th percentile AQI 842001: 90th percentile AQI 802002: 90th percentile AQI 842003: 90th percentile AQI 872004: 90th percentile AQI 642005: 90th percentile AQI 852006: 90th percentile AQI 862007: 90th percentile AQI 772008: 90th percentile AQI 692009: 90th percentile AQI 672010: 90th percentile AQI 662011: 90th percentile AQI 742012: 90th percentile AQI 872013: 90th percentile AQI 722014: 90th percentile AQI 712015: 90th percentile AQI 682016: 90th percentile AQI 632017: 90th percentile AQI 642018: 90th percentile AQI 712019: 90th percentile AQI 632020: 90th percentile AQI 672021: 90th percentile AQI 692022: 90th percentile AQI 672023: 90th percentile AQI 782024: 90th percentile AQI 712025: 90th percentile AQI 661980: Median AQI 261981: Median AQI 341982: Median AQI 351983: Median AQI 351984: Median AQI 331985: Median AQI 341986: Median AQI 441987: Median AQI 411988: Median AQI 391989: Median AQI 311990: Median AQI 311991: Median AQI 311992: Median AQI 341993: Median AQI 321994: Median AQI 361995: Median AQI 471996: Median AQI 481997: Median AQI 431998: Median AQI 421999: Median AQI 472000: Median AQI 472001: Median AQI 442002: Median AQI 472003: Median AQI 472004: Median AQI 422005: Median AQI 442006: Median AQI 452007: Median AQI 532008: Median AQI 542009: Median AQI 492010: Median AQI 522011: Median AQI 552012: Median AQI 552013: Median AQI 542014: Median AQI 532015: Median AQI 532016: Median AQI 472017: Median AQI 492018: Median AQI 482019: Median AQI 432020: Median AQI 532021: Median AQI 532022: Median AQI 512023: Median AQI 512024: Median AQI 462025: Median AQI 451980198519901995200020052010201520202025
  • 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)18853%
Ozone14441%
Nitrogen dioxide (NO₂)113%
Coarse particles (PM10)93%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202535221812931104566240PM2.5
202436521414830004671126PM2.5
2023365174174152005178166PM2.5
202236517918420005167112PM2.5
202136515420470005369145PM2.5
202036614621550005367116PM2.5
201936523912510004363137PM2.5
201836520016221004871172PM2.5
201736418617710004964101PM2.5
201636520815520004763129PM2.5
201536514921420005368123PM2.5
201436515820520005371119PM2.5
201336513822700005472100PM2.5
2012361116225191005587169PM2.5
201136512423920005574107PM2.5
20103651711940000526693PM2.5
200936519317020004967108PM2.5
20083661322340000546995PM2.5
2007365160195100005377129PM2.5
2006365212134172004586185Ozone
2005365222123172104485210Ozone
200436624811530004264113Ozone
2003364202138222004787177Ozone
2002363204142152004784151Ozone
2001365227125121004480153Ozone
2000366207138174004784156Ozone
1999365219134120004780129Ozone
1998365241100194104290208Ozone
199736524489293004390169NO2
19963662001174540048104185NO2
1995365199985891047115201NO2
19943652847560003667119Ozone
19933653065621003257197Ozone
19923662996421003458179Ozone
1991365298670000315580Ozone
19903653154640003154122Ozone
19893653085510103155201Ozone
198836627578112003974187Ozone
1987365231122102004180187Ozone
1986365215136121104478206Ozone
19853652758640003463147Ozone
198436630350112003371164Ozone
19833652966081003567172Ozone
19823653005852003564154Ozone
198136528469102003477197Ozone
1980366326400000265188CO

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 Kansas with a similar median AQI in 2025

All monitored counties in Kansas

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