Charlton County, Georgia air quality history

Daily Air Quality Index summaries from EPA monitors in Charlton, Georgia, 1991–2025.

91%

Good days in 2023

Median daily AQI, 2023

Days above 100 in 2023

120

Days with an AQI in 2023 (of 365)

In 2023, EPA reported a daily Air Quality Index (AQI) for Charlton, Georgia on 120 days. 109 of those days (91%) were in the Good range, and the median daily AQI was 27. That median is lower than the typical monitored county in Georgia (median 48 across 29 counties), and lower than the typical monitored U.S. county (43). The main pollutant was fine particles (PM2.5) on 120 days. Across the years with fuller monitoring, the share of Good days rose: an average of 68% in 2003–2008 versus 95% in 2021–2023.

EPA did not report an AQI for every day of 2023 here (120 of 365 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

Years with fewer than 120 monitored days (2016, 2017, 2018, 2019, 2024, 2025…) 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.

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 daily AQI
90th-percentile daily AQI

Main pollutant by day, 2023

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.

Pollutant	Days as main pollutant	Share of monitored days
Fine particles (PM2.5)	120	100%

Year-by-year data

Annual AQI summary by year
Year	Days with AQI	Good	Moderate	Unhealthy for Sensitive Groups	Unhealthy	Median AQI	90th pct.	Max AQI	Main pollutant
2025	95	88	7	0	0	27	46	61	PM2.5
2024	116	109	7	0	0	27	44	81	PM2.5
2023	120	109	11	0	0	27	48	74	PM2.5
2022	122	117	5	0	0	26	43	76	PM2.5
2021	121	118	3	0	0	25	40	56	PM2.5
2020	120	111	8	1	0	26	45	139	PM2.5
2019	103	97	6	0	0	26	48	65	PM2.5
2018	114	105	9	0	0	26	46	65	PM2.5
2017	113	97	16	0	0	28	53	91	PM2.5
2016	117	102	15	0	0	31	53	69	PM2.5
2015	119	107	12	0	0	32	51	63	PM2.5
2014	116	95	21	0	0	34	55	96	PM2.5
2013	117	101	16	0	0	32	52	67	PM2.5
2012	116	94	22	0	0	36	53	67	PM2.5
2011	115	77	38	0	0	42	62	90	PM2.5
2010	119	88	31	0	0	39	57	71	PM2.5
2009	120	94	26	0	0	38	55	65	PM2.5
2008	120	85	35	0	0	39	56	85	PM2.5
2007	116	88	24	1	3	39	61	162	PM2.5
2006	119	69	50	0	0	47	64	77	PM2.5
2005	120	84	36	0	0	37	62	98	PM2.5
2004	117	74	42	1	0	44	61	121	PM2.5
2003	121	75	46	0	0	42	58	74	PM2.5
2002	113	69	43	1	0	44	62	101	PM2.5
2001	119	69	50	0	0	47	66	88	PM2.5
2000	104	48	56	0	0	52	65	88	PM2.5
1999	75	27	48	0	0	56	72	94	PM2.5
1998	95	32	62	1	0	54	74	122	PM2.5
1997	99	52	46	1	0	49	70	116	PM2.5
1996	101	43	58	0	0	52	64	77	PM2.5
1995	100	45	55	0	0	52	65	89	PM2.5
1994	98	44	54	0	0	52	65	90	PM2.5
1993	96	38	57	1	0	54	67	103	PM2.5
1992	96	35	58	3	0	54	71	112	PM2.5
1991	24	8	16	0	0	53	62	85	PM2.5

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.

All monitored counties in Georgia

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