Daily Air Quality Index summaries from EPA monitors in Orange, New York, 1989–2025.
87%
Good days in 2025
27
Median daily AQI, 2025
1
Days above 100 in 2025
358
Days with an AQI in 2025 (of 365)
In 2025, EPA reported a daily Air Quality Index (AQI) for Orange, New York on 358 days. 311 of those days (87%) were in the Good range, and the median daily AQI was 27. That median is lower than the typical monitored county in New York (median 36 across 27 counties), and lower than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 358 days. Across the years with fuller monitoring, the share of Good days rose: an average of 68% in 1995–1997 versus 83% in 2023–2025.
Years with fewer than 120 monitored days (1989) 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)
358
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
358
311
46
1
0
0
0
27
53
108
PM2.5
2024
348
297
51
0
0
0
0
28
53
79
PM2.5
2023
357
270
81
3
3
0
0
34
58
185
PM2.5
2022
363
292
71
0
0
0
0
37
55
73
PM2.5
2021
364
294
69
1
0
0
0
37
56
149
Ozone
2020
366
307
59
0
0
0
0
38
54
97
Ozone
2019
365
307
58
0
0
0
0
39
54
74
Ozone
2018
365
279
85
1
0
0
0
39
57
147
Ozone
2017
365
305
60
0
0
0
0
39
54
84
Ozone
2016
366
299
66
1
0
0
0
38
55
112
Ozone
2015
365
256
105
4
0
0
0
41
61
147
PM2.5
2014
365
267
98
0
0
0
0
42
56
97
PM2.5
2013
365
267
98
0
0
0
0
38
58
88
PM2.5
2012
366
255
111
0
0
0
0
42
63
97
PM2.5
2011
365
218
144
2
1
0
0
45
66
166
PM2.5
2010
363
224
130
8
1
0
0
43
72
154
Ozone
2009
365
233
129
3
0
0
0
43
65
108
PM2.5
2008
366
190
166
8
1
1
0
49
75
201
PM2.5
2007
365
203
143
16
3
0
0
47
77
195
PM2.5
2006
275
200
66
9
0
0
0
42
77
143
Ozone
2005
264
149
96
14
5
0
0
48
93
174
Ozone
2004
267
178
80
7
2
0
0
43
74
185
Ozone
2003
252
160
78
10
4
0
0
44
84
164
Ozone
2002
250
165
73
8
3
1
0
44
84
213
Ozone
2001
260
149
86
14
11
0
0
47
100
182
Ozone
2000
239
152
77
9
1
0
0
44
82
177
Ozone
1999
207
141
39
19
7
1
0
44
105
209
Ozone
1998
194
120
52
17
5
0
0
47
105
169
Ozone
1997
182
125
39
12
6
0
0
44
97
164
Ozone
1996
193
135
40
10
8
0
0
43
93
200
Ozone
1995
176
113
38
15
10
0
0
44
122
197
Ozone
1989
26
26
0
0
0
0
0
26
36
45
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 New York with a similar median AQI in 2025
