Daily Air Quality Index summaries from EPA monitors in El Paso, Texas, 1980–2025.
18%
Good days in 2025
70
Median daily AQI, 2025
63
Days above 100 in 2025
365
Days with an AQI in 2025 (of 365)
In 2025, EPA reported a daily Air Quality Index (AQI) for El Paso, Texas on 365 days. 66 of those days (18%) were in the Good range, and the median daily AQI was 70. That median is higher than the typical monitored county in Texas (median 43.5 across 44 counties), and higher than the typical monitored U.S. county (40). The main pollutant was coarse particles (PM10) on 182 days. Across the years with fuller monitoring, the share of Good days fell: an average of 44% in 1980–1982 versus 20% in 2023–2025.
How the days broke down each year
Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.
Good
Moderate
Unhealthy for Sensitive Groups
Unhealthy
Very Unhealthy
Hazardous
Typical and high-end AQI over time
The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.
Median daily AQI
90th-percentile daily AQI
Main pollutant by day, 2025
On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.
Pollutant
Days as main pollutant
Share of monitored days
Coarse particles (PM10)
182
50%
Ozone
108
30%
Fine particles (PM2.5)
72
20%
Nitrogen dioxide (NO₂)
3
1%
Year-by-year data
Annual AQI summary by year
Year
Days with AQI
Good
Moderate
Unhealthy for Sensitive Groups
Unhealthy
Very Unhealthy
Hazardous
Median AQI
90th pct.
Max AQI
Main pollutant
2025
365
66
236
33
12
6
12
70
123
2122
PM10
2024
366
81
222
51
7
1
4
67
112
431
Ozone
2023
365
69
277
18
1
0
0
64
90
155
PM2.5
2022
365
72
273
19
1
0
0
59
86
163
PM2.5
2021
365
91
255
19
0
0
0
59
84
150
PM2.5
2020
366
95
252
17
2
0
0
59
89
192
PM2.5
2019
365
100
252
11
2
0
0
57
84
159
PM2.5
2018
365
91
257
15
2
0
0
59
84
164
PM2.5
2017
365
120
222
21
2
0
0
56
90
162
PM2.5
2016
366
123
237
6
0
0
0
55
77
147
PM2.5
2015
365
128
230
7
0
0
0
54
80
136
PM2.5
2014
365
110
246
8
1
0
0
55
80
160
PM2.5
2013
365
97
254
11
3
0
0
58
85
168
PM2.5
2012
366
67
275
19
2
1
2
62
92
659
PM2.5
2011
365
46
299
17
3
0
0
64
93
186
PM2.5
2010
365
95
254
13
3
0
0
58
82
191
PM2.5
2009
365
82
272
11
0
0
0
58
84
133
PM2.5
2008
366
64
267
32
3
0
0
64
100
172
PM2.5
2007
365
60
260
45
0
0
0
64
103
136
PM2.5
2006
365
47
258
46
10
2
2
69
113
620
PM2.5
2005
365
46
277
37
5
0
0
65
104
185
PM2.5
2004
366
137
194
29
4
2
0
56
100
261
Ozone
2003
365
94
222
38
6
1
4
61
110
1091
Ozone
2002
365
70
245
34
12
2
2
64
112
483
Ozone
2001
365
90
232
37
4
1
1
61
104
370
Ozone
2000
366
94
230
40
2
0
0
63
105
179
Ozone
1999
365
119
228
17
1
0
0
58
93
151
Ozone
1998
365
108
212
38
6
1
0
64
105
203
Ozone
1997
365
121
217
23
4
0
0
57
90
191
NO2
1996
366
128
198
37
2
0
1
58
101
424
NO2
1995
365
121
221
18
5
0
0
59
93
200
NO2
1994
365
125
200
33
6
1
0
58
101
201
NO2
1993
365
176
166
21
2
0
0
51
89
185
NO2
1992
366
158
177
28
3
0
0
57
100
172
NO2
1991
365
170
172
22
1
0
0
53
89
151
NO2
1990
365
140
185
27
13
0
0
57
105
197
Ozone
1989
365
88
223
44
6
4
0
67
108
283
Ozone
1988
366
119
196
45
5
1
0
61
108
203
Ozone
1987
365
110
199
39
15
2
0
63
118
223
Ozone
1986
365
108
206
34
13
3
1
63
122
368
CO
1985
365
118
183
49
14
1
0
64
123
202
Ozone
1984
366
126
201
22
15
2
0
58
104
222
CO
1983
365
171
146
39
8
1
0
52
111
203
Ozone
1982
365
161
170
28
6
0
0
56
100
181
CO
1981
362
164
156
37
4
1
0
57
103
203
NO2
1980
361
155
179
23
3
1
0
57
100
227
NO2
What this data can and can’t tell you
It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.
It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.
Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.
Counties in Texas with a similar median AQI in 2025
