Air Quality in Alabama

Alabama has 18 counties with EPA air quality monitoring. Air quality is generally improving across the state, with an average of 227 "Good" days per county per year. The best air quality is in Clay (median AQI 29) and the most polluted is Jefferson (median AQI 57).

County	Median AQI	Max AQI	Good Days	Unhealthy Days	Trend	Top Pollutant
Baldwin	40	90	278	0	→ stable	PM2.5
Clay	29	75	307	0	↓ improving	PM2.5
Colbert	38	65	238	0	↓ improving	Ozone
DeKalb	43	87	277	0	→ stable	Ozone
Elmore	37	58	231	0	→ stable	Ozone
Etowah	47	93	212	0	↓ improving	PM2.5
Houston	38	77	230	0	↓ improving	Ozone
Jefferson	57	119	95	6	→ stable	PM2.5
Lawrence	33	86	95	0	→ stable	PM2.5
Madison	44	100	254	0	→ stable	PM2.5
Mobile	45	80	242	0	→ stable	PM2.5
Montgomery	42	102	247	1	↓ improving	PM2.5
Morgan	44	81	264	0	→ stable	PM2.5
Russell	42	98	223	0	→ stable	Ozone
Shelby	40	97	216	0	→ stable	Ozone
Sumter	36	73	309	0	→ stable	PM2.5
Talladega	44	73	65	0	↓ improving	PM2.5
Tuscaloosa	37	125	318	2	↓ improving	PM2.5