EnviroNearby

Ford County, Kansas air quality history

Daily Air Quality Index summaries from EPA monitors in Ford, Kansas, 1985–2025.

90%
Good days in 2025
28
Median daily AQI, 2025
1
Days above 100 in 2025
362
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Ford, Kansas on 362 days. 325 of those days (90%) were in the Good range, and the median daily AQI was 28. That median is lower than the typical monitored county in Kansas (median 44 across 11 counties), and lower than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 296 days. Across the years with fuller monitoring, the share of Good days held roughly steady: an average of 92% in 1991–1993 versus 90% in 2023–2025.

Years with fewer than 120 monitored days (2001, 2002, 2003, 2004, 2005, 2006…) 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%1985: Good 18 of 18 days19851986: Good 31 of 31 days1987: Good 26 of 27 days1987: Unhealthy for Sensitive Groups 1 of 27 days1988: Good 47 of 47 days1989: Good 39 of 42 days1989: Moderate 3 of 42 days1990: Good 33 of 35 days1990: Moderate 2 of 35 days19901991: Good 132 of 137 days1991: Moderate 5 of 137 days1992: Good 323 of 365 days1992: Moderate 41 of 365 days1992: Unhealthy for Sensitive Groups 1 of 365 days1993: Good 284 of 310 days1993: Moderate 26 of 310 days1994: Good 44 of 44 days1995: Good 36 of 38 days1995: Moderate 2 of 38 days19951996: Good 42 of 43 days1996: Moderate 1 of 43 days1997: Good 46 of 47 days1997: Moderate 1 of 47 days1998: Good 59 of 60 days1998: Moderate 1 of 60 days1999: Good 46 of 58 days1999: Moderate 12 of 58 days2000: Good 59 of 59 days20002001: Good 59 of 60 days2001: Moderate 1 of 60 days2002: Good 57 of 58 days2002: Moderate 1 of 58 days2003: Good 51 of 54 days2003: Moderate 3 of 54 days2004: Good 54 of 54 days2005: Good 60 of 61 days2005: Moderate 1 of 61 days20052006: Good 21 of 23 days2006: Moderate 2 of 23 days2008: Good 298 of 302 days2008: Moderate 4 of 302 days2009: Good 348 of 358 days2009: Moderate 10 of 358 days2010: Good 365 of 365 days2011: Good 344 of 350 days2011: Moderate 6 of 350 days20112012: Good 365 of 366 days2012: Moderate 1 of 366 days2013: Good 364 of 365 days2013: Moderate 1 of 365 days2014: Good 362 of 365 days2014: Moderate 3 of 365 days2015: Good 324 of 330 days2015: Moderate 6 of 330 days2016: Good 360 of 366 days2016: Moderate 6 of 366 days20162017: Good 360 of 364 days2017: Moderate 2 of 364 days2017: Unhealthy for Sensitive Groups 1 of 364 days2017: Unhealthy 1 of 364 days2018: Good 325 of 354 days2018: Moderate 28 of 354 days2018: Unhealthy for Sensitive Groups 1 of 354 days2019: Good 301 of 304 days2019: Moderate 3 of 304 days2020: Good 297 of 302 days2020: Moderate 5 of 302 days2021: Good 353 of 358 days2021: Moderate 5 of 358 days20212022: Good 339 of 362 days2022: Moderate 21 of 362 days2022: Unhealthy for Sensitive Groups 1 of 362 days2022: Unhealthy 1 of 362 days2023: Good 289 of 308 days2023: Moderate 18 of 308 days2023: Unhealthy for Sensitive Groups 1 of 308 days2024: Good 317 of 366 days2024: Moderate 49 of 366 days2025: Good 325 of 362 days2025: Moderate 36 of 362 days2025: Unhealthy for Sensitive Groups 1 of 362 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 year0501001985: 90th percentile AQI 351986: 90th percentile AQI 411987: 90th percentile AQI 271988: 90th percentile AQI 321989: 90th percentile AQI 441990: 90th percentile AQI 391991: 90th percentile AQI 441992: 90th percentile AQI 511993: 90th percentile AQI 481994: 90th percentile AQI 301995: 90th percentile AQI 441996: 90th percentile AQI 331997: 90th percentile AQI 281998: 90th percentile AQI 381999: 90th percentile AQI 642000: 90th percentile AQI 362001: 90th percentile AQI 302002: 90th percentile AQI 372003: 90th percentile AQI 412004: 90th percentile AQI 272005: 90th percentile AQI 272006: 90th percentile AQI 342008: 90th percentile AQI 322009: 90th percentile AQI 272010: 90th percentile AQI 282011: 90th percentile AQI 342012: 90th percentile AQI 232013: 90th percentile AQI 132014: 90th percentile AQI 242015: 90th percentile AQI 312016: 90th percentile AQI 312017: 90th percentile AQI 302018: 90th percentile AQI 412019: 90th percentile AQI 312020: 90th percentile AQI 292021: 90th percentile AQI 322022: 90th percentile AQI 402023: 90th percentile AQI 402024: 90th percentile AQI 532025: 90th percentile AQI 511985: Median AQI 151986: Median AQI 221987: Median AQI 161988: Median AQI 181989: Median AQI 201990: Median AQI 241991: Median AQI 191992: Median AQI 341993: Median AQI 341994: Median AQI 201995: Median AQI 221996: Median AQI 191997: Median AQI 161998: Median AQI 211999: Median AQI 192000: Median AQI 172001: Median AQI 162002: Median AQI 152003: Median AQI 242004: Median AQI 172005: Median AQI 152006: Median AQI 182008: Median AQI 172009: Median AQI 152010: Median AQI 142011: Median AQI 142012: Median AQI 122013: Median AQI 62014: Median AQI 72015: Median AQI 132016: Median AQI 162017: Median AQI 162018: Median AQI 172019: Median AQI 152020: Median AQI 112021: Median AQI 172022: Median AQI 192023: Median AQI 152024: Median AQI 262025: Median AQI 28198519901995200020052011201620212025
  • 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)29682%
Coarse particles (PM10)6618%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
20253623253610002851115PM2.5
2024366317490000265380PM2.5
20233082891810001540147PM10
20223623392111001940169PM10
202135835350000173280PM10
202030229750000112979PM10
201930430130000153154PM10
20183543252810001741129PM10
2017364360211001630187PM10
201636636060000163167PM10
201533032460000133164PM10
20143653623000072469PM10
20133653641000061354PM10
201236636510000122394PM10
201135034460000143463PM10
201036536500000142849PM10
2009358348100000152766PM10
200830229840000173287PM10
2006232120000183466PM10
2005616010000152751PM10
2004545400000172732PM10
2003545130000244177PM10
2002585710000153751PM10
2001605910000163051PM10
2000595900000173644PM10
19995846120000196470PM10
1998605910000213851PM10
1997474610000162871PM10
1996434210000193356PM10
1995383620000224477PM10
1994444400000203039PM10
1993310284260000344890Ozone
19923653234110003451101Ozone
199113713250000194490Ozone
1990353320000243964PM10
1989423930000204460PM10
1988474700000183238PM10
19872726010001627101PM10
1986313100000224144PM10
1985181800000153540PM10

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 1985–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem