Palm Beach County, Florida air quality history

Daily Air Quality Index summaries from EPA monitors in Palm Beach, Florida, 1980–2025.

76%

Good days in 2025

Median daily AQI, 2025

Days above 100 in 2025

365

Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Palm Beach, Florida on 365 days. 279 of those days (76%) were in the Good range, and the median daily AQI was 39. That median is about the same as the typical monitored county in Florida (median 41 across 38 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 217 days. Across the years with fuller monitoring, the share of Good days fell: an average of 85% in 1980–1982 versus 73% in 2023–2025.

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)	217	59%
Ozone	148	41%

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	365	279	86	0	0	39	57	87	PM2.5
2024	366	257	109	0	0	43	57	76	PM2.5
2023	365	260	104	1	0	43	58	122	PM2.5
2022	365	275	90	0	0	41	57	90	PM2.5
2021	365	263	102	0	0	43	56	83	PM2.5
2020	361	267	94	0	0	42	58	93	PM2.5
2019	357	273	84	0	0	40	56	94	PM2.5
2018	365	260	105	0	0	42	58	91	PM2.5
2017	355	186	167	2	0	49	63	112	PM2.5
2016	359	204	152	2	1	47	62	164	PM2.5
2015	365	247	118	0	0	42	59	90	PM2.5
2014	365	253	110	2	0	42	61	119	PM2.5
2013	365	261	102	2	0	42	59	104	PM2.5
2012	366	205	159	2	0	47	64	105	PM2.5
2011	365	218	143	3	1	46	64	176	PM2.5
2010	365	197	166	2	0	49	62	119	PM2.5
2009	365	282	83	0	0	42	58	93	Ozone
2008	365	286	78	0	1	39	58	169	Ozone
2007	365	262	100	2	1	40	61	152	PM2.5
2006	364	227	132	5	0	44	65	147	PM2.5
2005	350	220	129	1	0	44	63	105	PM2.5
2004	348	214	132	2	0	45	64	105	PM2.5
2003	365	239	122	4	0	43	60	119	PM2.5
2002	365	251	113	1	0	43	58	108	PM2.5
2001	365	250	109	5	1	43	61	172	PM2.5
2000	366	183	175	8	0	51	67	143	PM2.5
1999	365	222	135	7	1	45	67	151	PM2.5
1998	365	298	52	13	2	37	67	161	Ozone
1997	365	332	32	1	0	35	50	101	Ozone
1996	366	334	30	2	0	36	49	133	Ozone
1995	365	328	37	0	0	37	51	93	Ozone
1994	365	333	27	5	0	31	48	126	Ozone
1993	365	316	40	6	3	33	54	161	Ozone
1992	366	352	14	0	0	27	42	77	Ozone
1991	365	347	17	1	0	31	46	126	Ozone
1990	365	333	30	2	0	34	49	136	Ozone
1989	365	322	39	4	0	31	54	150	Ozone
1988	366	322	40	4	0	32	55	122	Ozone
1987	365	329	33	3	0	31	50	126	Ozone
1986	365	333	27	4	1	30	49	164	Ozone
1985	365	320	41	4	0	33	55	119	Ozone
1984	366	295	64	7	0	36	71	126	Ozone
1983	364	312	46	4	2	37	57	177	Ozone
1982	365	339	23	3	0	32	48	115	Ozone
1981	365	305	52	8	0	37	63	129	Ozone
1980	366	283	74	9	0	39	67	136	Ozone

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 1980–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem