Daily Air Quality Index summaries from EPA monitors in Victoria, Texas, 1989–2025.
87%
Good days in 2025
34
Median daily AQI, 2025
0
Days above 100 in 2025
360
Days with an AQI in 2025 (of 365)
In 2025, EPA reported a daily Air Quality Index (AQI) for Victoria, Texas on 360 days. 312 of those days (87%) were in the Good range, and the median daily AQI was 34. That median is lower than the typical monitored county in Texas (median 43.5 across 44 counties), and lower than the typical monitored U.S. county (40). The main pollutant was ozone on 360 days. Across the years with fuller monitoring, the share of Good days rose: an average of 83% in 1989–1992 versus 92% in 2023–2025.
Years with fewer than 120 monitored days (1990) are shown in the table but left out of comparisons and trend statements.
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
Ozone
360
100%
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
360
312
48
0
0
0
0
34
58
100
Ozone
2024
355
324
29
2
0
0
0
35
49
105
Ozone
2023
356
345
11
0
0
0
0
31
44
74
Ozone
2022
354
342
12
0
0
0
0
30
46
74
Ozone
2021
364
347
17
0
0
0
0
32
46
97
Ozone
2020
329
308
21
0
0
0
0
31
47
100
Ozone
2019
341
319
22
0
0
0
0
31
48
87
Ozone
2018
279
270
7
2
0
0
0
28
38
112
Ozone
2017
356
332
24
0
0
0
0
33
47
93
Ozone
2016
348
328
20
0
0
0
0
33
47
90
Ozone
2015
357
323
33
1
0
0
0
32
50
105
Ozone
2014
358
340
18
0
0
0
0
30
45
93
Ozone
2013
336
320
16
0
0
0
0
31
46
80
Ozone
2012
348
319
29
0
0
0
0
31
49
100
Ozone
2011
327
286
37
4
0
0
0
32
54
133
Ozone
2010
351
320
29
2
0
0
0
32
49
112
Ozone
2009
351
324
25
2
0
0
0
31
48
119
Ozone
2008
355
334
21
0
0
0
0
31
45
90
Ozone
2007
361
332
28
1
0
0
0
31
48
101
Ozone
2006
345
297
43
5
0
0
0
34
67
126
Ozone
2005
357
294
57
6
0
0
0
34
67
147
Ozone
2004
361
311
44
5
1
0
0
32
64
154
Ozone
2003
358
290
52
14
2
0
0
34
77
174
Ozone
2002
353
309
32
10
2
0
0
32
58
169
Ozone
2001
359
311
43
5
0
0
0
30
61
126
Ozone
2000
353
321
23
8
1
0
0
30
50
154
Ozone
1999
333
270
44
15
4
0
0
35
74
185
Ozone
1998
352
299
39
12
2
0
0
31
67
156
Ozone
1997
329
296
25
8
0
0
0
28
51
140
Ozone
1996
331
302
25
4
0
0
0
30
49
140
Ozone
1995
277
219
35
17
6
0
0
36
93
174
Ozone
1994
312
267
38
6
1
0
0
32
61
164
Ozone
1993
326
280
37
6
3
0
0
32
61
161
Ozone
1992
305
270
28
7
0
0
0
34
54
133
Ozone
1991
173
139
24
6
4
0
0
35
74
156
Ozone
1990
110
101
9
0
0
0
0
32
48
67
Ozone
1989
251
201
34
12
4
0
0
32
84
190
Ozone
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
