Air Quality in New Mexico

New Mexico has 16 counties with EPA air quality monitoring. Air quality is generally worsening across the state, with an average of 204 "Good" days per county per year. The best air quality is in Los Alamos (median AQI 14) and the most polluted is Dona Ana (median AQI 62).

County	Median AQI	Max AQI	Good Days	Unhealthy Days	Trend	Top Pollutant
Bernalillo	61	443	100	33	↑ worsening	Ozone
Catron	39	80	175	0	↑ worsening	Ozone
Chaves	27	88	104	0	→ stable	PM2.5
Dona Ana	62	692	97	32	→ stable	Ozone
Eddy	49	179	188	36	→ stable	Ozone
Lea	44	150	255	5	→ stable	Ozone
Lincoln	16	84	114	0	→ stable	PM2.5
Los Alamos	14	41	116	0	↑ worsening	PM2.5
Luna	17	153	341	4	→ stable	PM10
Rio Arriba	45	108	252	3	→ stable	Ozone
San Juan	48	115	218	11	→ stable	Ozone
Sandoval	44	122	271	2	→ stable	Ozone
Santa Fe	45	101	259	1	→ stable	Ozone
Socorro	16	47	120	0	→ stable	PM2.5
Taos	16	76	354	0	→ stable	PM2.5
Valencia	43	105	300	2	→ stable	Ozone