Daily Air Quality Index summaries from EPA monitors in Pitt, North Carolina, 1982–2025.
88%
Good days in 2025
37
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 Pitt, North Carolina on 365 days. 321 of those days (88%) were in the Good range, and the median daily AQI was 37. That median is about the same as the typical monitored county in North Carolina (median 39 across 33 counties), and lower than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 204 days. Across the years with fuller monitoring, the share of Good days rose: an average of 61% in 1983–1985 versus 81% in 2023–2025.
Years with fewer than 120 monitored days (1982) 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)
204
56%
Ozone
161
44%
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
321
44
0
0
0
0
37
52
71
PM2.5
2024
352
302
50
0
0
0
0
37
53
74
PM2.5
2023
365
256
107
2
0
0
0
42
60
118
PM2.5
2022
365
305
60
0
0
0
0
37
52
97
PM2.5
2021
360
288
72
0
0
0
0
39
55
81
PM2.5
2020
361
313
48
0
0
0
0
36
52
95
PM2.5
2019
352
271
81
0
0
0
0
41
55
87
PM2.5
2018
345
259
86
0
0
0
0
41
56
87
PM2.5
2017
365
252
113
0
0
0
0
43
58
87
PM2.5
2016
288
206
82
0
0
0
0
42
60
100
PM2.5
2015
258
212
46
0
0
0
0
41
54
80
Ozone
2014
256
202
54
0
0
0
0
41
58
93
Ozone
2013
262
219
43
0
0
0
0
37
55
100
Ozone
2012
254
194
56
3
1
0
0
42
61
177
Ozone
2011
259
160
92
7
0
0
0
47
87
136
Ozone
2010
257
159
95
3
0
0
0
47
74
136
Ozone
2009
269
201
68
0
0
0
0
42
60
90
Ozone
2008
260
135
113
11
1
0
0
49
87
188
Ozone
2007
260
130
118
12
0
0
0
51
90
133
Ozone
2006
262
142
116
4
0
0
0
49
77
136
Ozone
2005
259
137
107
14
1
0
0
49
84
156
Ozone
2004
260
148
105
7
0
0
0
47
77
129
Ozone
2003
253
139
106
5
3
0
0
47
78
174
Ozone
2002
263
115
118
18
12
0
0
53
108
177
Ozone
2001
260
131
115
14
0
0
0
50
93
126
Ozone
2000
259
107
121
28
2
1
0
58
108
204
Ozone
1999
242
124
84
24
10
0
0
50
112
177
Ozone
1998
234
122
75
31
6
0
0
49
112
187
Ozone
1997
240
128
65
37
9
1
0
49
126
210
Ozone
1996
236
127
73
32
4
0
0
48
119
161
Ozone
1995
233
153
61
18
1
0
0
44
93
156
Ozone
1994
230
162
60
8
0
0
0
41
84
136
Ozone
1993
237
133
67
31
6
0
0
48
119
174
Ozone
1992
219
160
48
11
0
0
0
43
87
150
Ozone
1991
210
124
66
20
0
0
0
46
100
150
Ozone
1989
210
123
66
19
2
0
0
47
101
159
Ozone
1988
210
102
71
25
11
1
0
51
133
202
Ozone
1985
209
127
55
25
2
0
0
47
105
159
Ozone
1984
206
135
52
18
1
0
0
44
100
156
Ozone
1983
178
101
53
21
3
0
0
47
112
169
Ozone
1982
118
86
30
2
0
0
0
43
74
105
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 North Carolina with a similar median AQI in 2025