Bad Air Days in Glynn County, Georgia: under 1 a Year

under 1 bad air days a year

Rare: among the cleanest-air counties EPA monitors. Ranked 866 of 996 monitored counties, where 1 is worst.

What makes them bad: mostly particles: smoke and dust (100% particle days).

The bad-air season here

Most bad days here fall in November and March. Averaged over 2016 to 2025.

What actually helps 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 4 bad days a year; in 2016 to 2025, under 1. The air has improved. The worst recent year was 2016, with 2 bad days on 343 monitored days.

Date	AQI	Main pollutant
2016-11-17	129	PM2.5
2022-03-04	106	PM2.5
2016-11-16	104	PM2.5
2016-11-18	98	PM2.5
2020-06-26	97	PM2.5

The air on a normal day

Across 3,205 monitored days from 2016 to 2025, the air in Glynn County rated Good on 78% of them, more often than the 72% typical of monitored counties, and Moderate on 22%. The median day sat at AQI 39; one day in ten went above 55.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)54%1,744 days
ozone46%1,461 days

Year by year

Year	Days monitored	Good	Moderate	Over 100	Median AQI	Highest AQI
2025*	343	255	88	0	41	94
2024	366	286	80	0	39	84
2023	363	243	120	0	43	90
2022	356	221	134	1	45	106
2021	322	267	55	0	38	80
2020	285	256	29	0	33	97
2019	279	235	44	0	37	80
2018	272	247	25	0	35	74
2017	276	241	35	0	37	77
2016	343	255	86	2	41	129
2015	354	276	78	0	38	67
2014	332	212	120	0	44	89
2013	312	257	55	0	38	80
2012	264	238	26	0	36	89
2011	266	205	60	1	41	108
2010	280	216	64	0	42	93

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

Georgia compared

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.