Citrus County, Florida air quality history

Daily Air Quality Index summaries from EPA monitors in Citrus, Florida, 1993–2025.

71%

Good days in 2025

Median daily AQI, 2025

Days above 100 in 2025

363

Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Citrus, Florida on 363 days. 258 of those days (71%) were in the Good range, and the median daily AQI was 43. That median is about the same as the typical monitored county in Florida (median 41 across 38 counties), and higher than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 363 days. Across the years with fuller monitoring, the share of Good days rose: an average of 44% in 1999–2001 versus 69% in 2023–2025.

Years with fewer than 120 monitored days (1997, 1998, 2003, 2004, 2011, 2013…) 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, 2025

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)	363	100%

Year-by-year data

Annual AQI summary by year
Year	Days with AQI	Good	Moderate	Unhealthy for Sensitive Groups	Unhealthy	Very Unhealthy	Median AQI	90th pct.	Max AQI	Main pollutant
2025	363	258	104	1	0	0	43	55	125	PM2.5
2024	345	248	96	0	0	1	43	56	272	PM2.5
2023	353	230	122	1	0	0	45	58	118	PM2.5
2022	342	229	113	0	0	0	45	55	78	PM2.5
2021	360	236	124	0	0	0	44	56	83	PM2.5
2020	359	241	117	1	0	0	43	59	125	PM2.5
2019	357	257	100	0	0	0	40	55	82	PM2.5
2018	350	247	103	0	0	0	43	56	73	PM2.5
2017	350	211	139	0	0	0	46	62	96	PM2.5
2016	343	213	129	1	0	0	45	56	104	PM2.5
2015	135	115	20	0	0	0	32	52	69	PM2.5
2014	120	97	23	0	0	0	34	55	82	PM2.5
2013	119	95	24	0	0	0	36	55	78	PM2.5
2012	121	99	22	0	0	0	36	54	87	PM2.5
2011	116	91	25	0	0	0	36	54	86	PM2.5
2010	122	81	41	0	0	0	42	58	69	PM2.5
2009	124	98	26	0	0	0	39	54	74	PM2.5
2008	122	80	42	0	0	0	44	58	79	PM2.5
2007	121	69	52	0	0	0	47	61	87	PM2.5
2006	122	66	56	0	0	0	48	62	78	PM2.5
2005	121	74	46	1	0	0	44	61	103	PM2.5
2004	119	67	51	0	1	0	46	59	152	PM2.5
2003	116	71	45	0	0	0	44	59	74	PM2.5
2002	122	71	51	0	0	0	46	61	75	PM2.5
2001	122	61	61	0	0	0	51	65	85	PM2.5
2000	157	70	87	0	0	0	53	64	99	PM2.5
1999	167	62	105	0	0	0	55	70	83	PM2.5
1998	104	41	63	0	0	0	54	71	91	PM2.5
1997	102	45	57	0	0	0	53	68	80	PM2.5
1996	103	57	46	0	0	0	48	59	82	PM2.5
1995	101	53	48	0	0	0	48	62	78	PM2.5
1994	105	49	56	0	0	0	51	67	94	PM2.5
1993	75	29	46	0	0	0	54	69	96	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.

Counties in Florida with a similar median AQI in 2025

All monitored counties in Florida

Source: U.S. EPA AirData, “Annual AQI by County” files for 1993–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem