Willamette Activity Center Oakridge, Cottage Grove, Oregon, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Willamette Activity Center Oakridge, Cottage Grove, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (20th October ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 26 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Oct - 21st Oct 2025
Willamette Activity Center Oakridge, Cottage Grove, Oregon, United States
7 AM20th Oct 2025
6 PM
6 AM21st Oct 2025
37AQI
21AQI
57AQI
19AQI
In the last 24 hours,
Willamette Activity Center Oakridge's AQI reached its highest point of 57 at 3 AM during the Night, while the lowest point, 19, was recorded at 9 PM during the Night between 20th Oct and 21st Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Willamette Activity Center Oakridge, Cottage Grove, Oregon, United States
13°C7/19°C
16°C6/25°C
22°C13/33°C
23°C15/31°C
18°C11/25°C
16°C7/25°C
20°C12/29°C
18°C12/25°C
14°C11/20°C
13°C9/18°C
15°C11/20°C
14°C10/18°C
13°C9/19°C
13°C9/17°C
14°C8/23°C
18°C8/28°C
19°C11/27°C
13°C7/18°C
11°C7/17°C
11°C9/16°C
10°C7/14°C
10°C8/12°C
9°C5/15°C
11°C5/19°C
11°C6/18°C
10°C4/17°C
12°C7/17°C
13°C5/23°C
12°C8/14°C
10°C4/17°C
--°C/°C
36AQI
31AQI
37AQI
29AQI
2025 Days Vs Air Quality
Willamette Activity Center Oakridge, Cottage Grove, Oregon, United States
89%
262
11%
31
Total number of days with different AQI categories in last 294 days in 2025 (71 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 294 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Willamette Activity Center Oakridge, Cottage Grove, Oregon, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
36AQI
40AQI
40AQI
33AQI
33AQI
43AQI
66AQI
42AQI
56AQI
51AQI
52AQI
44AQI
47AQI
43AQI
50AQI
49AQI
41AQI
41AQI
49AQI
57AQI
59AQI
64AQI
65AQI
65AQI
66AQI
70AQI
69AQI
68AQI
65AQI
66AQI
60AQI
56AQI
50AQI
52AQI
56AQI
48AQI
51AQI
39AQI
42AQI
33AQI
34AQI
38AQI
50AQI
46AQI
46AQI
40AQI
35AQI
37AQI
32AQI
32AQI
32AQI
35AQI
41AQI
31AQI
37AQI
32AQI
36AQI
34AQI
37AQI
37AQI
29AQI
27AQI
25AQI
24AQI
24AQI
29AQI
37AQI
34AQI
31AQI
29AQI
25AQI
23AQI
22AQI
20AQI
26AQI
33AQI
22AQI
24AQI
20AQI
22AQI
19AQI
21AQI
20AQI
22AQI
21AQI
19AQI
19AQI
16AQI
20AQI
17AQI
20AQI
18AQI
18AQI
25AQI
24AQI
27AQI
20AQI
19AQI
16AQI
18AQI
15AQI
17AQI
21AQI
23AQI
20AQI
24AQI
29AQI
25AQI
26AQI
25AQI
18AQI
22AQI
21AQI
26AQI
20AQI
21AQI
20AQI
18AQI
17AQI
22AQI
20AQI
20AQI
16AQI
17AQI
20AQI
20AQI
22AQI
17AQI
20AQI
19AQI
16AQI
17AQI
15AQI
16AQI
17AQI
16AQI
14AQI
17AQI
13AQI
13AQI
14AQI
13AQI
14AQI
14AQI
14AQI
15AQI
15AQI
16AQI
18AQI
17AQI
19AQI
15AQI
16AQI
18AQI
18AQI
17AQI
18AQI
18AQI
20AQI
27AQI
29AQI
28AQI
26AQI
22AQI
20AQI
21AQI
21AQI
19AQI
16AQI
17AQI
16AQI
13AQI
13AQI
15AQI
25AQI
27AQI
20AQI
16AQI
16AQI
16AQI
18AQI
22AQI
18AQI
17AQI
17AQI
20AQI
20AQI
19AQI
22AQI
19AQI
17AQI
18AQI
19AQI
21AQI
19AQI
19AQI
44AQI
43AQI
28AQI
21AQI
18AQI
19AQI
20AQI
25AQI
25AQI
20AQI
17AQI
16AQI
17AQI
19AQI
19AQI
30AQI
41AQI
27AQI
23AQI
24AQI
26AQI
19AQI
17AQI
25AQI
24AQI
24AQI
33AQI
28AQI
35AQI
17AQI
17AQI
16AQI
15AQI
15AQI
16AQI
17AQI
18AQI
30AQI
46AQI
55AQI
52AQI
56AQI
56AQI
47AQI
45AQI
43AQI
45AQI
36AQI
50AQI
70AQI
68AQI
68AQI
45AQI
48AQI
55AQI
43AQI
28AQI
40AQI
40AQI
49AQI
24AQI
19AQI
22AQI
27AQI
24AQI
32AQI
34AQI
26AQI
19AQI
23AQI
35AQI
39AQI
25AQI
21AQI
38AQI
79AQI
17AQI
20AQI
28AQI
31AQI
31AQI
32AQI
44AQI
33AQI
45AQI
24AQI
35AQI
27AQI
31AQI
31AQI
45AQI
47AQI
53AQI
49AQI
55AQI
33AQI
26AQI
53AQI
40AQI
24AQI
21AQI
17AQI
19AQI
22AQI
31AQI
38AQI
36AQI
No. of days
202530AQI
Highest AQI recorded in
January53AQI
Lowest AQI recorded in
May17AQI
202431AQI
Highest AQI recorded in
December44AQI
Lowest AQI recorded in
May17AQI
202335AQI
Highest AQI recorded in
November62AQI
Lowest AQI recorded in
December32AQI
202137AQI
Highest AQI recorded in
August81AQI
Lowest AQI recorded in
May17AQI
202041AQI
Highest AQI recorded in
September130AQI
Lowest AQI recorded in
June14AQI
Most & Least Polluted Years Over the Last 5 Years
Willamette Activity Center Oakridge's annual 2025 AQI (30) shows an average percentage change of -16.04% (improved AQI) compared to previous years: 2020 (41), 2021 (37), 2023 (35), 2024 (31).