Bad Air Days in Clayton County, Georgia

Not enough data

EPA monitors in Clayton County ran on too few days between 2016 and 2025 to give a fair yearly count (about 36% of days covered). Neighbouring counties below are a better guide.

What actually helps here

EPA monitors here ran too few days to give a fair yearly count. Use AirNow for today's air.

The record for Clayton

The worst recent year was 2024, with 2 bad days on 222 monitored days.

Date	AQI	Main pollutant
2016-11-14	145	PM2.5
2024-04-07	128	PM2.5
2024-03-21	104	PM2.5
2023-06-29	98	PM2.5
2024-03-14	96	PM2.5

Most days, not the worst ones

Across 1,304 monitored days from 2016 to 2025, the air in Clayton County rated Good on 57% of them, less often than the 72% typical of monitored counties, and Moderate on 42%. The median day sat at AQI 46; one day in ten went above 61.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)100%1,304 days

Clayton County by year

Year	Days monitored	Good	Moderate	Over 100	Median AQI	Highest AQI
2025*	122	66	56	0	48	74
2024	222	124	96	2	45	128
2023	121	60	61	0	51	98
2022	121	82	39	0	42	72
2021	121	69	52	0	44	74
2020	121	86	35	0	38	91
2019	119	66	53	0	48	73
2018	120	72	48	0	44	71
2017	116	57	59	0	51	71
2016	121	67	53	1	46	145
2015	121	59	62	0	51	94
2014	122	46	76	0	53	85
2013	116	54	62	0	52	70
2012	116	47	69	0	54	77
2011	102	32	70	0	56	95
2010	112	28	84	0	58	88

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

Nearby counties on file

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.