Sandy, Oregon, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Sandy, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (28th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 22 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Sandy, Oregon, United States
6 AM29th Sep 2025
7 PM
5 AM30th Sep 2025
AQI
AQI
61AQI
31AQI
In the last 24 hours,
Sandy's AQI reached its highest point of 61 at 6 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Sandy, Oregon, United States
18°C14/24°C
17°C12/24°C
23°C15/31°C
24°C20/30°C
23°C18/30°C
22°C17/27°C
17°C14/24°C
13°C11/15°C
15°C11/21°C
13°C12/16°C
13°C11/17°C
11°C11/12°C
13°C9/20°C
16°C12/23°C
11°C8/12°C
12°C5/21°C
16°C10/23°C
17°C13/23°C
15°C10/21°C
19°C12/26°C
16°C12/21°C
9°C7/9°C
11°C4/20°C
18°C13/24°C
20°C14/26°C
13°C7/17°C
12°C6/18°C
16°C12/23°C
16°C12/21°C
--°C/°C
--°C/°C
33AQI
29AQI
33AQI
29AQI
2025 Days Vs Air Quality
Sandy, Oregon, United States
96%
260
4%
10
0.3%
1
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 272 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Sandy, Oregon, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI
30AQI
26AQI
24AQI
23AQI
26AQI
22AQI
26AQI
26AQI
24AQI
21AQI
23AQI
23AQI
35AQI
31AQI
34AQI
38AQI
30AQI
31AQI
24AQI
30AQI
31AQI
32AQI
44AQI
36AQI
40AQI
45AQI
49AQI
52AQI
55AQI
53AQI
45AQI
43AQI
37AQI
40AQI
38AQI
37AQI
34AQI
39AQI
40AQI
39AQI
41AQI
41AQI
36AQI
30AQI
26AQI
28AQI
25AQI
28AQI
25AQI
26AQI
26AQI
27AQI
22AQI
28AQI
26AQI
26AQI
23AQI
25AQI
26AQI
22AQI
19AQI
22AQI
22AQI
18AQI
20AQI
20AQI
25AQI
22AQI
22AQI
17AQI
19AQI
18AQI
19AQI
18AQI
20AQI
20AQI
23AQI
21AQI
25AQI
21AQI
23AQI
21AQI
23AQI
26AQI
22AQI
24AQI
23AQI
24AQI
23AQI
22AQI
25AQI
27AQI
30AQI
29AQI
29AQI
23AQI
24AQI
23AQI
26AQI
24AQI
22AQI
23AQI
21AQI
23AQI
26AQI
23AQI
21AQI
22AQI
17AQI
15AQI
18AQI
16AQI
21AQI
20AQI
23AQI
22AQI
20AQI
20AQI
19AQI
19AQI
19AQI
19AQI
18AQI
19AQI
18AQI
19AQI
18AQI
21AQI
21AQI
19AQI
20AQI
20AQI
19AQI
18AQI
18AQI
16AQI
17AQI
16AQI
15AQI
15AQI
16AQI
18AQI
20AQI
20AQI
19AQI
20AQI
19AQI
18AQI
19AQI
18AQI
17AQI
17AQI
17AQI
18AQI
19AQI
19AQI
19AQI
23AQI
28AQI
27AQI
28AQI
26AQI
24AQI
23AQI
24AQI
25AQI
24AQI
22AQI
22AQI
25AQI
22AQI
22AQI
23AQI
27AQI
30AQI
27AQI
24AQI
22AQI
22AQI
21AQI
24AQI
23AQI
20AQI
21AQI
34AQI
27AQI
23AQI
22AQI
22AQI
21AQI
21AQI
26AQI
29AQI
26AQI
26AQI
30AQI
34AQI
36AQI
27AQI
24AQI
25AQI
23AQI
23AQI
23AQI
24AQI
25AQI
26AQI
23AQI
24AQI
21AQI
32AQI
37AQI
30AQI
25AQI
26AQI
29AQI
27AQI
25AQI
19AQI
18AQI
20AQI
24AQI
28AQI
31AQI
28AQI
25AQI
23AQI
21AQI
20AQI
22AQI
27AQI
31AQI
44AQI
47AQI
56AQI
54AQI
53AQI
48AQI
42AQI
41AQI
49AQI
49AQI
46AQI
44AQI
50AQI
53AQI
65AQI
55AQI
51AQI
46AQI
36AQI
41AQI
30AQI
29AQI
30AQI
26AQI
19AQI
18AQI
19AQI
20AQI
24AQI
27AQI
22AQI
20AQI
23AQI
34AQI
30AQI
112AQI
45AQI
22AQI
33AQI
32AQI
22AQI
22AQI
18AQI
23AQI
25AQI
33AQI
37AQI
No. of days
202527AQI
Highest AQI recorded in
September37AQI
Lowest AQI recorded in
May18AQI
202420AQI
Highest AQI recorded in
December27AQI
Lowest AQI recorded in
April4AQI
202319AQI
Highest AQI recorded in
August39AQI
Lowest AQI recorded in
December10AQI
202229AQI
Highest AQI recorded in
August34AQI
Lowest AQI recorded in
October27AQI
202125AQI
Highest AQI recorded in
June54AQI
Lowest AQI recorded in
October12AQI
202035AQI
Highest AQI recorded in
September76AQI
Lowest AQI recorded in
July13AQI
Most & Least Polluted Years Over the Last 6 Years
Sandy's annual 2025 AQI (27) shows an average percentage change of 11.4% (worsened AQI) compared to previous years: 2020 (35), 2021 (25), 2022 (29), 2023 (19), 2024 (20).