Daily Air Quality Index summaries from EPA monitors in Davie, North Carolina, 1982–2014.
77%
Good days in 2014
44
Median daily AQI, 2014
1
Days above 100 in 2014
214
Days with an AQI in 2014 (of 365)
In 2014, EPA reported a daily Air Quality Index (AQI) for Davie, North Carolina on 214 days. 165 of those days (77%) were in the Good range, and the median daily AQI was 44. That median is about the same as the typical monitored county in North Carolina (median 44 across 44 counties), and about the same as the typical monitored U.S. county (42). The main pollutant was ozone on 214 days. Across the years with fuller monitoring, the share of Good days rose: an average of 63% in 1982–1984 versus 79% in 2012–2014.
EPA did not report an AQI for every day of 2014 here (214 of 365 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.
The most recent year with data for this county is 2014; EPA's files for 2015–2025 contain no row for it, which usually means its monitors stopped reporting.
Years with fewer than 120 monitored days (1995) 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, 2014
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
214
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
2014
214
165
48
1
0
0
0
44
64
105
Ozone
2013
214
191
23
0
0
0
0
40
51
100
Ozone
2012
214
151
58
4
1
0
0
44
71
174
Ozone
2011
214
141
66
7
0
0
0
47
80
119
Ozone
2010
214
125
81
8
0
0
0
48
87
140
Ozone
2009
210
165
45
0
0
0
0
41
64
100
Ozone
2008
214
123
76
14
1
0
0
48
93
159
Ozone
2007
214
85
85
41
3
0
0
64
115
159
Ozone
2006
214
113
78
22
1
0
0
50
105
151
Ozone
2005
214
109
77
25
3
0
0
49
108
159
Ozone
2004
206
140
56
10
0
0
0
44
93
136
Ozone
2003
214
114
76
20
3
1
0
49
101
201
Ozone
2002
213
95
74
23
20
1
0
58
150
207
Ozone
2001
212
93
79
30
10
0
0
61
126
197
Ozone
2000
213
92
53
52
16
0
0
61
140
179
Ozone
1999
210
82
63
42
20
3
0
67
151
235
Ozone
1998
213
92
58
46
16
1
0
61
143
205
Ozone
1997
214
89
72
43
10
0
0
64
126
197
Ozone
1996
195
85
80
29
1
0
0
54
115
177
Ozone
1995
15
15
0
0
0
0
0
16
23
25
PM10
1994
237
192
44
1
0
0
0
39
64
108
Ozone
1993
237
107
71
55
4
0
0
54
126
166
Ozone
1992
218
119
76
20
3
0
0
49
101
164
Ozone
1991
214
120
76
18
0
0
0
49
100
143
Ozone
1988
210
66
64
46
24
10
0
84
169
239
Ozone
1985
195
115
63
14
3
0
0
46
97
172
Ozone
1984
205
133
44
27
1
0
0
45
119
174
Ozone
1983
197
113
51
28
5
0
0
48
119
159
Ozone
1982
134
88
40
5
1
0
0
44
87
159
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 2014
