Air Quality in Florida

Florida has 39 counties with EPA air quality monitoring. Air quality is generally worsening across the state, with an average of 264 "Good" days per county per year. The best air quality is in Putnam (median AQI 25) and the most polluted is Duval (median AQI 50).

County	Median AQI	Max AQI	Good Days	Unhealthy Days	Trend	Top Pollutant
Alachua	38	94	300	0	→ stable	PM2.5
Baker	42	87	279	0	↑ worsening	PM2.5
Bay	47	215	214	1	→ stable	PM2.5
Brevard	40	74	311	0	→ stable	Ozone
Broward	47	154	213	1	→ stable	PM2.5
Citrus	43	272	248	1	→ stable	PM2.5
Collier	42	87	279	0	→ stable	PM2.5
Columbia	44	93	220	0	→ stable	PM2.5
Duval	50	98	190	0	→ stable	PM2.5
Escambia	43	84	256	0	↑ worsening	PM2.5
Flagler	35	71	344	0	→ stable	Ozone
Hamilton	44	75	215	0	→ stable	PM2.5
Highlands	35	77	333	0	→ stable	Ozone
Hillsborough	50	143	190	4	→ stable	PM2.5
Holmes	47	73	215	0	→ stable	PM2.5
Indian River	35	64	344	0	→ stable	Ozone
Lake	36	100	312	0	→ stable	Ozone
Lee	37	80	313	0	→ stable	Ozone
Leon	44	129	243	1	→ stable	PM2.5
Liberty	31	54	327	0	→ stable	Ozone
Manatee	37	115	317	1	→ stable	Ozone
Marion	49	101	189	1	→ stable	PM2.5
Martin	39	71	309	0	→ stable	Ozone
Miami-Dade	48	197	219	4	→ stable	PM2.5
Nassau	42	57	35	0	→ stable	PM2.5
Okaloosa	36	74	341	0	→ stable	Ozone
Orange	41	121	272	2	↓ improving	Ozone
Osceola	36	108	314	1	→ stable	Ozone
Palm Beach	43	76	257	0	→ stable	PM2.5
Pasco	39	97	320	0	→ stable	Ozone
Pinellas	48	132	213	3	→ stable	PM2.5
Polk	39	105	282	1	→ stable	Ozone
Putnam	25	112	329	2	↑ worsening	PM10
Santa Rosa	46	81	235	0	→ stable	PM2.5
Sarasota	44	115	242	1	→ stable	PM2.5
Seminole	43	149	204	1	→ stable	Ozone
St. Lucie	35	64	353	0	→ stable	Ozone
Volusia	39	76	293	0	→ stable	PM2.5
Wakulla	41	139	261	1	→ stable	PM2.5