Daily Air Quality Index summaries from EPA monitors in Brevard, Florida, 1988–2025.
91%
Good days in 2025
38
Median daily AQI, 2025
0
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 Brevard, Florida on 365 days. 333 of those days (91%) were in the Good range, and the median daily AQI was 38. That median is lower than the typical monitored county in Florida (median 41 across 38 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was ozone on 303 days. Across the years with fuller monitoring, the share of Good days held roughly steady: an average of 85% in 1989–1991 versus 84% in 2023–2025.
Years with fewer than 120 monitored days (1988) 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
303
83%
Fine particles (PM2.5)
62
17%
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
333
32
0
0
0
0
38
50
80
Ozone
2024
366
311
55
0
0
0
0
40
53
74
Ozone
2023
365
279
85
1
0
0
0
43
58
130
Ozone
2022
365
288
77
0
0
0
0
43
54
80
PM2.5
2021
365
255
110
0
0
0
0
45
58
84
PM2.5
2020
366
265
101
0
0
0
0
43
57
85
PM2.5
2019
351
308
43
0
0
0
0
39
51
90
Ozone
2018
365
288
76
1
0
0
0
41
55
129
PM2.5
2017
352
254
98
0
0
0
0
43
56
97
PM2.5
2016
366
298
68
0
0
0
0
42
54
84
Ozone
2015
365
309
56
0
0
0
0
39
53
90
Ozone
2014
365
257
108
0
0
0
0
42
58
87
PM2.5
2013
365
285
80
0
0
0
0
40
55
93
Ozone
2012
366
216
147
3
0
0
0
46
62
122
PM2.5
2011
365
215
148
2
0
0
0
47
61
105
PM2.5
2010
365
199
166
0
0
0
0
48
61
87
PM2.5
2009
365
227
138
0
0
0
0
46
59
100
PM2.5
2008
366
198
165
3
0
0
0
48
63
122
PM2.5
2007
365
201
160
3
1
0
0
47
68
158
PM2.5
2006
365
240
117
7
1
0
0
44
71
156
Ozone
2005
365
289
69
7
0
0
0
39
64
126
Ozone
2004
354
274
79
1
0
0
0
40
64
105
Ozone
2003
365
302
56
7
0
0
0
37
55
147
Ozone
2002
365
302
60
3
0
0
0
39
59
115
Ozone
2001
365
286
71
6
2
0
0
40
64
159
Ozone
2000
366
264
85
17
0
0
0
42
84
147
Ozone
1999
359
279
68
11
1
0
0
41
80
156
Ozone
1998
365
276
62
24
2
1
0
41
87
210
Ozone
1997
365
300
55
9
1
0
0
40
67
161
Ozone
1996
366
315
48
3
0
0
0
38
58
143
Ozone
1995
365
313
51
1
0
0
0
38
58
119
Ozone
1994
365
325
34
5
1
0
0
34
51
156
Ozone
1993
365
296
59
10
0
0
0
36
71
129
Ozone
1992
365
300
52
13
0
0
0
37
74
129
Ozone
1991
365
328
35
2
0
0
0
37
51
133
Ozone
1990
365
302
56
7
0
0
0
40
64
143
Ozone
1989
365
296
50
19
0
0
0
38
74
143
Ozone
1988
59
57
2
0
0
0
0
34
45
67
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 Florida with a similar median AQI in 2025
