Daily Air Quality Index summaries from EPA monitors in Lubbock, Texas, 1985–2025.
93%
Good days in 2025
24
Median daily AQI, 2025
2
Days above 100 in 2025
338
Days with an AQI in 2025 (of 365)
In 2025, EPA reported a daily Air Quality Index (AQI) for Lubbock, Texas on 338 days. 314 of those days (93%) were in the Good range, and the median daily AQI was 24. 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 fine particles (PM2.5) on 338 days. Across the years with fuller monitoring, the share of Good days rose: an average of 88% in 1986–1988 versus 91% in 2023–2025.
Years with fewer than 120 monitored days (2000, 2002, 2003, 2004, 2008, 2016…) 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
Fine particles (PM2.5)
338
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
338
314
22
1
1
0
0
24
46
167
PM2.5
2024
358
330
28
0
0
0
0
23
47
91
PM2.5
2023
364
323
40
0
1
0
0
25
52
161
PM2.5
2022
347
300
45
2
0
0
0
26
54
138
PM2.5
2021
347
278
69
0
0
0
0
31
55
85
PM2.5
2020
352
311
41
0
0
0
0
26
52
83
PM2.5
2019
330
281
48
1
0
0
0
34
53
103
PM2.5
2018
303
239
63
1
0
0
0
33
56
134
PM2.5
2017
340
288
52
0
0
0
0
33
53
93
PM2.5
2016
119
115
4
0
0
0
0
28
43
59
PM2.5
2014
265
189
76
0
0
0
0
38
58
100
PM2.5
2013
334
257
76
0
1
0
0
35
54
170
PM2.5
2012
278
166
110
2
0
0
0
47
59
113
PM2.5
2011
320
203
114
3
0
0
0
42
62
136
PM2.5
2010
365
303
62
0
0
0
0
35
53
75
PM2.5
2009
340
260
79
1
0
0
0
37
55
114
PM2.5
2008
81
58
23
0
0
0
0
34
56
66
PM2.5
2005
171
103
68
0
0
0
0
44
61
83
PM2.5
2004
56
42
14
0
0
0
0
36
56
77
PM2.5
2003
60
38
22
0
0
0
0
38
59
82
PM2.5
2002
117
89
28
0
0
0
0
38
58
77
PM2.5
2001
124
94
30
0
0
0
0
37
56
77
PM2.5
2000
115
81
33
1
0
0
0
37
57
101
PM2.5
1999
71
65
6
0
0
0
0
20
47
55
PM10
1998
61
61
0
0
0
0
0
18
34
42
PM10
1997
100
100
0
0
0
0
0
13
25
36
PM10
1996
177
170
7
0
0
0
0
18
31
75
PM10
1995
246
218
20
3
2
1
2
19
54
498
PM10
1994
345
316
25
1
3
0
0
23
47
199
PM10
1993
163
161
2
0
0
0
0
17
28
82
PM10
1992
170
165
5
0
0
0
0
19
32
62
PM10
1991
171
167
4
0
0
0
0
21
36
95
PM10
1990
172
170
2
0
0
0
0
20
33
70
PM10
1989
164
142
21
0
0
0
1
30
52
388
PM10
1988
164
142
21
1
0
0
0
31
53
113
PM10
1987
132
119
13
0
0
0
0
29
50
81
PM10
1986
150
131
18
1
0
0
0
28
53
128
PM10
1985
59
52
7
0
0
0
0
32
51
60
PM10
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
