Bad Air Days in Chaves County, New Mexico

Not enough data

EPA monitors in Chaves County ran on too few days between 2016 and 2025 to give a fair yearly count (about 32% of days covered). Neighbouring counties below are a better guide.

What to buy, and what not to

EPA monitors here ran too few days to give a fair yearly count. Use AirNow for today's air.

The worst days on file

The worst recent year was 2025, with 2 bad days on 86 monitored days.

Date	AQI	Main pollutant
2025-03-14	117	PM2.5
2017-03-08	112	PM2.5
2025-04-01	106	PM2.5
2016-07-08	90	PM2.5
2024-03-31	88	PM2.5

An ordinary day in Chaves

Across 1,151 monitored days from 2016 to 2025, the air in Chaves County rated Good on 92% of them, more often than the 72% typical of monitored counties, and Moderate on 8%. The median day sat at AQI 25; one day in ten went above 47.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)100%1,151 days

Chaves County by year

Year	Days monitored	Good	Moderate	Over 100	Median AQI	Highest AQI
2025*	86	79	5	2	29	117
2024	114	104	10	0	27	88
2023	118	107	11	0	24	75
2022	121	108	13	0	26	64
2021	121	110	11	0	24	74
2020	119	108	11	0	23	78
2019	118	113	5	0	21	58
2018	118	102	16	0	28	62
2017	119	111	7	1	23	112
2016	117	113	4	0	22	90
2015	114	107	7	0	23	72
2014	114	90	24	0	29	78
2013	110	99	10	1	29	121
2012	110	97	13	0	33	61
2011	119	92	27	0	34	99
2010	128	118	10	0	27	75

*2025 may be a partial year in EPA's file.

Nearby counties on file

How this is counted

A bad air day is a day the county's daily AQI from EPA AirData went above 100, the level where EPA tells children, older adults and people with asthma or heart disease to cut back outdoors. Monitors do not run every day, so yearly counts are scaled to 365 days. This is the record, not today's air: for that, check AirNow. More on the method in how the county numbers are made, on the AQI 100 line in what counts as a bad air day.