Bad Air Days in Kaufman County, Texas: 3 a Year

3 bad air days a year

About the middle of monitored US counties. Ranked 435 of 996 monitored counties, where 1 is worst.

What makes them bad: mostly ozone: summer smog (16% particle days).

When the bad days come in Kaufman

Most bad days here fall in August and September and October and March and June. Averaged over 2016 to 2025.

Is a purifier worth it here?

Bad air days are rare here. A standard furnace filter is enough; no purifier needed for outdoor air.
On the odd bad day, check AirNow and keep windows shut.

The record for Kaufman

In 2000 to 2009 this county averaged 9 bad days a year; in 2016 to 2025, 3. The air has improved. The worst recent year was 2023, with 9 bad days on 364 monitored days.

Date	AQI	Main pollutant
2023-02-27	159	PM2.5
2024-10-15	147	Ozone
2020-10-12	134	PM2.5
2023-09-19	133	Ozone
2025-03-15	126	PM2.5

Most days, not the worst ones

Across 3,648 monitored days from 2016 to 2025, the air in Kaufman County rated Good on 69% of them, close to the 72% typical of monitored counties, and Moderate on 30%. The median day sat at AQI 43; one day in ten went above 61.

The pollutant setting the AQI on an ordinary day here:

ozone50%1,825 days
fine particles (PM2.5)50%1,808 days

Year by year

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2025*	365	241	122	2	0	44	126
2024	362	226	128	8	0	46	147
2023	364	222	133	9	1	46	159
2022	365	252	110	3	0	44	112
2021	365	269	96	0	0	40	84
2020	366	260	105	1	0	42	134
2019	365	278	87	0	0	42	93
2018	365	268	96	1	0	41	122
2017	365	238	126	1	0	44	112
2016	366	278	88	0	0	42	82
2015	364	252	112	0	0	42	93
2014	362	235	127	0	0	44	84
2013	365	216	144	5	0	46	133
2012	360	179	176	5	1	51	151
2011	365	169	188	8	0	52	136
2010	365	202	163	0	0	49	93

*2025 may be a partial year in EPA's file.

Elsewhere in Texas

How this is counted

A bad air day is a day the county's daily AQI from EPA AirData went above 100, the level where EPA tells children, older adults and people with asthma or heart disease to cut back outdoors. Monitors do not run every day, so yearly counts are scaled to 365 days. This is the record, not today's air: for that, check AirNow. More on the method in how the county numbers are made, on the AQI 100 line in what counts as a bad air day, and on why a purifier does not touch ozone in smoke vs ozone.