Daily Air Quality Index summaries from EPA monitors in Bibb, Georgia, 1996–2025.
43%
Good days in 2025
52
Median daily AQI, 2025
1
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 Bibb, Georgia on 365 days. 156 of those days (43%) were in the Good range, and the median daily AQI was 52. That median is higher than the typical monitored county in Georgia (median 46 across 25 counties), and higher than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 346 days. Across the years with fuller monitoring, the share of Good days fell: an average of 48% in 1997–1999 versus 43% in 2023–2025.
Years with fewer than 120 monitored days (1996) 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)
346
95%
Ozone
19
5%
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
156
208
1
0
0
0
52
68
119
PM2.5
2024
366
179
185
2
0
0
0
51
65
123
PM2.5
2023
351
136
211
3
1
0
0
53
71
157
PM2.5
2022
365
216
149
0
0
0
0
46
60
91
PM2.5
2021
365
198
165
2
0
0
0
48
66
131
PM2.5
2020
366
262
104
0
0
0
0
42
57
97
PM2.5
2019
362
216
143
3
0
0
0
46
64
137
PM2.5
2018
362
250
111
1
0
0
0
42
60
106
PM2.5
2017
365
230
135
0
0
0
0
45
63
93
PM2.5
2016
366
184
177
5
0
0
0
50
66
147
PM2.5
2015
365
192
173
0
0
0
0
48
63
87
PM2.5
2014
365
130
233
2
0
0
0
54
67
112
PM2.5
2013
365
166
198
1
0
0
0
51
65
105
PM2.5
2012
366
124
238
4
0
0
0
54
72
147
PM2.5
2011
364
108
242
13
1
0
0
57
87
151
PM2.5
2010
364
84
276
4
0
0
0
58
77
133
PM2.5
2009
364
119
240
4
0
1
0
55
76
201
PM2.5
2008
365
105
243
16
1
0
0
59
87
151
PM2.5
2007
365
85
244
28
8
0
0
60
100
195
PM2.5
2006
363
73
266
21
3
0
0
63
97
164
PM2.5
2005
363
94
239
28
2
0
0
60
95
177
PM2.5
2004
366
115
233
14
4
0
0
58
90
169
PM2.5
2003
326
105
202
18
1
0
0
56
84
159
PM2.5
2002
285
126
130
22
7
0
0
54
101
195
Ozone
2001
281
137
125
15
3
1
0
51
89
204
Ozone
2000
285
79
152
36
16
2
0
64
129
229
Ozone
1999
249
76
113
41
15
4
0
66
143
215
Ozone
1998
230
115
61
37
13
4
0
51
143
205
Ozone
1997
206
128
49
17
11
1
0
44
122
209
Ozone
1996
17
17
0
0
0
0
0
20
31
37
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 Georgia with a similar median AQI in 2025
