Air Quality in Arkansas

Arkansas has 13 counties with EPA air quality monitoring. Air quality is generally improving across the state, with an average of 162 "Good" days per county per year. The best air quality is in Clark (median AQI 35) and the most polluted is Pulaski (median AQI 55).

County	Median AQI	Max AQI	Good Days	Unhealthy Days	Trend	Top Pollutant
Arkansas	46	98	72	0	→ stable	PM2.5
Ashley	41	96	77	0	→ stable	PM2.5
Benton	47	85	79	0	↓ improving	PM2.5
Clark	35	93	336	0	→ stable	Ozone
Craighead	41	65	35	0	↓ improving	PM2.5
Crittenden	41	133	294	5	→ stable	Ozone
Garland	50	97	63	0	→ stable	PM2.5
Jackson	39	95	83	0	→ stable	PM2.5
Newton	39	87	334	0	→ stable	Ozone
Polk	38	167	261	1	→ stable	Ozone
Pulaski	55	205	118	6	→ stable	PM2.5
Union	49	93	62	0	→ stable	PM2.5
Washington	41	101	304	1	→ stable	Ozone