Bad Air Days in Hunt County, Texas: under 1 a Year

under 1 bad air day a year

Fewer bad air days than most monitored US counties. Ranked 710 of 996 monitored counties, where 1 is worst.

What makes them bad: mostly ozone: summer smog (0% particle days).

The bad-air season here

Most bad days here fall in July and August and September. 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.

Better or worse than it was

In 2000 to 2009 this county averaged 10 bad days a year; in 2016 to 2025, under 1. The air has improved. The worst recent year was 2018, with 4 bad days on 365 monitored days.

Date	AQI	Main pollutant
2018-07-27	154	Ozone
2024-08-19	133	Ozone
2018-07-26	126	Ozone
2023-06-08	119	Ozone
2024-08-07	119	Ozone

An ordinary day in Hunt

Across 3,629 monitored days from 2016 to 2025, the air in Hunt County rated Good on 93% of them, more often than the 72% typical of monitored counties, and Moderate on 7%. The median day sat at AQI 35; one day in ten went above 49.

The pollutant setting the AQI on an ordinary day here:

ozone98%3,556 days
nitrogen dioxide2%73 days

Every recent year on file

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2025*	362	332	29	1	0	34	119
2024	362	324	36	2	0	37	133
2023	359	314	43	2	0	37	119
2022	358	330	28	0	0	36	97
2021	362	343	19	0	0	33	93
2020	366	351	15	0	0	32	87
2019	364	345	19	0	0	35	97
2018	365	329	32	4	1	32	154
2017	365	343	22	0	0	35	100
2016	366	351	15	0	0	35	67
2015	365	339	26	0	0	33	80
2014	362	338	24	0	0	35	80
2013	365	313	49	3	0	38	115
2012	366	302	57	7	1	38	174
2011	365	280	73	12	0	39	143
2010	362	322	39	1	0	36	126

*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.