Daily Air Quality Index summaries from EPA monitors in Saratoga, New York, 1985–2025.
96%
Good days in 2025
34
Median daily AQI, 2025
0
Days above 100 in 2025
322
Days with an AQI in 2025 (of 365)
In 2025, EPA reported a daily Air Quality Index (AQI) for Saratoga, New York on 322 days. 310 of those days (96%) were in the Good range, and the median daily AQI was 34. That median is about the same as 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 ozone on 322 days. Across the years with fuller monitoring, the share of Good days rose: an average of 89% in 1985–1987 versus 96% in 2023–2025.
Years with fewer than 120 monitored days (1990) 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
322
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
322
310
12
0
0
0
0
34
44
93
Ozone
2024
347
334
13
0
0
0
0
32
44
84
Ozone
2023
365
352
12
1
0
0
0
31
44
122
Ozone
2022
362
354
8
0
0
0
0
32
44
74
Ozone
2021
354
339
15
0
0
0
0
31
45
93
Ozone
2020
319
315
4
0
0
0
0
33
44
61
Ozone
2019
331
328
3
0
0
0
0
33
44
58
Ozone
2018
361
341
19
1
0
0
0
31
45
119
Ozone
2017
354
341
13
0
0
0
0
34
45
90
Ozone
2016
350
328
19
3
0
0
0
33
48
119
Ozone
2015
359
342
16
1
0
0
0
32
46
105
Ozone
2014
364
355
9
0
0
0
0
32
44
74
Ozone
2013
362
346
16
0
0
0
0
32
44
93
Ozone
2012
364
340
22
2
0
0
0
31
46
108
Ozone
2011
360
337
22
1
0
0
0
33
46
108
Ozone
2010
362
329
29
4
0
0
0
35
50
105
Ozone
2009
363
336
25
2
0
0
0
34
48
122
Ozone
2008
359
323
27
7
2
0
0
33
51
156
Ozone
2007
354
313
22
17
2
0
0
33
54
156
Ozone
2006
277
250
22
4
1
0
0
31
50
159
Ozone
2005
298
244
41
10
3
0
0
40
67
172
Ozone
2004
363
321
33
7
2
0
0
36
54
177
Ozone
2003
234
168
52
10
4
0
0
41
77
187
Ozone
2002
267
222
30
9
6
0
0
35
77
192
Ozone
2001
337
284
32
15
6
0
0
36
77
192
Ozone
2000
348
319
24
4
1
0
0
33
48
179
Ozone
1999
351
288
39
19
5
0
0
37
84
187
Ozone
1998
340
280
50
8
2
0
0
34
71
187
Ozone
1997
347
313
23
9
2
0
0
33
50
177
Ozone
1996
343
312
28
2
1
0
0
32
50
154
Ozone
1995
345
303
26
15
1
0
0
31
54
169
Ozone
1994
356
315
33
7
1
0
0
32
54
151
Ozone
1993
363
327
24
11
1
0
0
31
50
174
Ozone
1992
353
325
17
7
4
0
0
31
48
174
Ozone
1991
283
235
25
19
4
0
0
34
77
159
Ozone
1990
116
115
1
0
0
0
0
29
40
61
Ozone
1989
355
309
34
10
2
0
0
33
61
169
Ozone
1988
183
143
16
11
8
5
0
30
136
210
Ozone
1987
357
318
29
8
1
1
0
31
51
201
Ozone
1986
335
308
22
5
0
0
0
30
49
140
Ozone
1985
234
202
17
12
3
0
0
32
71
166
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 New York with a similar median AQI in 2025
