EnviroNearby

Kaufman County, Texas air quality history

Daily Air Quality Index summaries from EPA monitors in Kaufman, Texas, 1991–2025.

66%
Good days in 2025
44
Median daily AQI, 2025
2
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 Kaufman, Texas on 365 days. 241 of those days (66%) were in the Good range, and the median daily AQI was 44. That median is about the same as the typical monitored county in Texas (median 43.5 across 44 counties), and higher than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 203 days. Across the years with fuller monitoring, the share of Good days fell: an average of 73% in 1991–2002 versus 63% in 2023–2025.

Years with fewer than 120 monitored days (2000) 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%1991: Good 140 of 238 days1991: Moderate 65 of 238 days1991: Unhealthy for Sensitive Groups 29 of 238 days1991: Unhealthy 4 of 238 days19912000: Good 92 of 99 days2000: Moderate 5 of 99 days2000: Unhealthy for Sensitive Groups 2 of 99 days2001: Good 284 of 360 days2001: Moderate 65 of 360 days2001: Unhealthy for Sensitive Groups 11 of 360 days20012002: Good 295 of 363 days2002: Moderate 59 of 363 days2002: Unhealthy for Sensitive Groups 9 of 363 days2003: Good 268 of 349 days2003: Moderate 76 of 349 days2003: Unhealthy for Sensitive Groups 4 of 349 days2003: Unhealthy 1 of 349 days20032004: Good 273 of 363 days2004: Moderate 84 of 363 days2004: Unhealthy for Sensitive Groups 6 of 363 days2005: Good 144 of 361 days2005: Moderate 194 of 361 days2005: Unhealthy for Sensitive Groups 22 of 361 days2005: Unhealthy 1 of 361 days20052006: Good 163 of 365 days2006: Moderate 186 of 365 days2006: Unhealthy for Sensitive Groups 15 of 365 days2006: Unhealthy 1 of 365 days2007: Good 175 of 365 days2007: Moderate 180 of 365 days2007: Unhealthy for Sensitive Groups 10 of 365 days20072008: Good 176 of 366 days2008: Moderate 187 of 366 days2008: Unhealthy for Sensitive Groups 3 of 366 days2009: Good 192 of 365 days2009: Moderate 171 of 365 days2009: Unhealthy for Sensitive Groups 2 of 365 days20092010: Good 202 of 365 days2010: Moderate 163 of 365 days2011: Good 169 of 365 days2011: Moderate 188 of 365 days2011: Unhealthy for Sensitive Groups 8 of 365 days20112012: Good 179 of 360 days2012: Moderate 176 of 360 days2012: Unhealthy for Sensitive Groups 4 of 360 days2012: Unhealthy 1 of 360 days2013: Good 216 of 365 days2013: Moderate 144 of 365 days2013: Unhealthy for Sensitive Groups 5 of 365 days20132014: Good 235 of 362 days2014: Moderate 127 of 362 days2015: Good 252 of 364 days2015: Moderate 112 of 364 days20152016: Good 278 of 366 days2016: Moderate 88 of 366 days2017: Good 238 of 365 days2017: Moderate 126 of 365 days2017: Unhealthy for Sensitive Groups 1 of 365 days20172018: Good 268 of 365 days2018: Moderate 96 of 365 days2018: Unhealthy for Sensitive Groups 1 of 365 days2019: Good 278 of 365 days2019: Moderate 87 of 365 days20192020: Good 260 of 366 days2020: Moderate 105 of 366 days2020: Unhealthy for Sensitive Groups 1 of 366 days2021: Good 269 of 365 days2021: Moderate 96 of 365 days20212022: Good 252 of 365 days2022: Moderate 110 of 365 days2022: Unhealthy for Sensitive Groups 3 of 365 days2023: Good 222 of 364 days2023: Moderate 133 of 364 days2023: Unhealthy for Sensitive Groups 8 of 364 days2023: Unhealthy 1 of 364 days20232024: Good 226 of 362 days2024: Moderate 128 of 362 days2024: Unhealthy for Sensitive Groups 8 of 362 days2025: Good 241 of 365 days2025: Moderate 122 of 365 days2025: Unhealthy for Sensitive Groups 2 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 year0501001501991: 90th percentile AQI 1122000: 90th percentile AQI 482001: 90th percentile AQI 802002: 90th percentile AQI 672003: 90th percentile AQI 702004: 90th percentile AQI 742005: 90th percentile AQI 902006: 90th percentile AQI 872007: 90th percentile AQI 742008: 90th percentile AQI 722009: 90th percentile AQI 672010: 90th percentile AQI 642011: 90th percentile AQI 772012: 90th percentile AQI 742013: 90th percentile AQI 692014: 90th percentile AQI 612015: 90th percentile AQI 612016: 90th percentile AQI 552017: 90th percentile AQI 582018: 90th percentile AQI 612019: 90th percentile AQI 572020: 90th percentile AQI 602021: 90th percentile AQI 582022: 90th percentile AQI 622023: 90th percentile AQI 712024: 90th percentile AQI 672025: 90th percentile AQI 601991: Median AQI 462000: Median AQI 272001: Median AQI 392002: Median AQI 352003: Median AQI 392004: Median AQI 372005: Median AQI 532006: Median AQI 522007: Median AQI 512008: Median AQI 512009: Median AQI 492010: Median AQI 492011: Median AQI 522012: Median AQI 512013: Median AQI 462014: Median AQI 442015: Median AQI 422016: Median AQI 422017: Median AQI 442018: Median AQI 412019: Median AQI 422020: Median AQI 422021: Median AQI 402022: Median AQI 442023: Median AQI 462024: Median AQI 462025: Median AQI 4419912001200320052007200920112013201520172019202120232025
  • 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)20356%
Ozone15743%
Nitrogen dioxide (NO₂)51%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202536524112220004460126PM2.5
202436222612880004667147Ozone
202336422213381004671159Ozone
202236525211030004462112Ozone
2021365269960000405884PM2.5
202036626010510004260134PM2.5
2019365278870000425793Ozone
20183652689610004161122PM2.5
201736523812610004458112PM2.5
2016366278880000425582PM2.5
20153642521120000426193PM2.5
20143622351270000446184PM2.5
201336521614450004669133Ozone
201236017917641005174151PM2.5
201136516918880005277136PM2.5
20103652021630000496493PM2.5
200936519217120004967105PM2.5
200836617618730005172133PM2.5
2007365175180100005174140PM2.5
2006365163186151005287151PM2.5
2005361144194221005390172PM2.5
20043632738460003774136Ozone
20033492687641003970166Ozone
20023632955990003567136Ozone
200136028465110003980136Ozone
20009992520002748133Ozone
1991238140652940046112179Ozone

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 Texas with a similar median AQI in 2025

All monitored counties in Texas

Source: U.S. EPA AirData, “Annual AQI by County” files for 1991–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem