Corvallis, Corvallis, Oregon, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Corvallis, Corvallis, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (13th August ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 2nd highest AQI at 27 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 13th Aug - 14th Aug 2025
Corvallis, Corvallis, Oregon, United States
5 AM13th Aug 2025
8 PM
4 AM14th Aug 2025
34AQI
20AQI
32AQI
15AQI
In the last 24 hours,
Corvallis's AQI reached its highest point of 34 at 6 AM during the Day, while the lowest point, 15, was recorded at 4 AM during the Night between 13th Aug and 14th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Corvallis, Corvallis, Oregon, United States
--°C/°C
25°C16/37°C
19°C11/30°C
19°C11/31°C
20°C13/29°C
18°C11/27°C
18°C14/25°C
20°C10/31°C
22°C13/33°C
20°C12/30°C
19°C10/29°C
17°C10/23°C
18°C10/28°C
20°C10/31°C
22°C12/34°C
22°C13/34°C
21°C14/31°C
22°C14/32°C
19°C13/26°C
16°C11/21°C
17°C11/23°C
19°C10/30°C
19°C15/26°C
19°C13/25°C
20°C11/30°C
22°C13/33°C
27°C16/39°C
28°C16/40°C
26°C16/39°C
22°C13/33°C
20°C15/29°C
20AQI
19AQI
19AQI
19AQI
2025 Days Vs Air Quality
Corvallis, Corvallis, Oregon, United States
96%
217
4%
8
Total number of days with different AQI categories in last 227 days in 2025 (138 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 227 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
Corvallis, Corvallis, Oregon, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
36AQI
35AQI
32AQI
30AQI
27AQI
28AQI
32AQI
36AQI
40AQI
33AQI
34AQI
35AQI
36AQI
37AQI
41AQI
40AQI
39AQI
38AQI
47AQI
46AQI
49AQI
53AQI
55AQI
56AQI
51AQI
49AQI
52AQI
54AQI
56AQI
55AQI
48AQI
43AQI
37AQI
35AQI
38AQI
35AQI
36AQI
32AQI
32AQI
35AQI
33AQI
31AQI
33AQI
29AQI
30AQI
30AQI
29AQI
35AQI
32AQI
46AQI
34AQI
43AQI
38AQI
35AQI
38AQI
35AQI
36AQI
35AQI
35AQI
35AQI
29AQI
26AQI
25AQI
25AQI
25AQI
26AQI
27AQI
28AQI
24AQI
26AQI
23AQI
21AQI
21AQI
21AQI
19AQI
19AQI
18AQI
20AQI
19AQI
19AQI
18AQI
19AQI
19AQI
21AQI
22AQI
18AQI
18AQI
17AQI
19AQI
17AQI
17AQI
17AQI
18AQI
19AQI
20AQI
18AQI
16AQI
16AQI
15AQI
17AQI
16AQI
16AQI
17AQI
19AQI
20AQI
20AQI
20AQI
21AQI
18AQI
18AQI
14AQI
15AQI
15AQI
18AQI
18AQI
18AQI
17AQI
16AQI
16AQI
16AQI
19AQI
18AQI
16AQI
15AQI
15AQI
17AQI
17AQI
16AQI
17AQI
17AQI
16AQI
16AQI
16AQI
16AQI
17AQI
17AQI
15AQI
15AQI
15AQI
13AQI
13AQI
13AQI
13AQI
14AQI
13AQI
14AQI
14AQI
15AQI
19AQI
17AQI
19AQI
16AQI
17AQI
19AQI
18AQI
18AQI
18AQI
18AQI
19AQI
21AQI
23AQI
25AQI
24AQI
20AQI
19AQI
19AQI
20AQI
18AQI
15AQI
16AQI
16AQI
13AQI
13AQI
16AQI
23AQI
24AQI
17AQI
15AQI
14AQI
16AQI
18AQI
18AQI
16AQI
16AQI
16AQI
17AQI
17AQI
18AQI
20AQI
16AQI
15AQI
18AQI
20AQI
21AQI
16AQI
19AQI
22AQI
24AQI
22AQI
18AQI
19AQI
19AQI
20AQI
18AQI
16AQI
16AQI
15AQI
18AQI
19AQI
17AQI
17AQI
20AQI
18AQI
16AQI
19AQI
24AQI
23AQI
18AQI
16AQI
16AQI
18AQI
23AQI
26AQI
26AQI
27AQI
42AQI
35AQI
22AQI
17AQI
16AQI
18AQI
18AQI
21AQI
No. of days
202524AQI
Highest AQI recorded in
January42AQI
Lowest AQI recorded in
May16AQI
202425AQI
Highest AQI recorded in
December40AQI
Lowest AQI recorded in
April8AQI
202334AQI
Highest AQI recorded in
November78AQI
Lowest AQI recorded in
December29AQI
202221AQI
Highest AQI recorded in
February33AQI
Lowest AQI recorded in
June14AQI
202120AQI
Highest AQI recorded in
January27AQI
Lowest AQI recorded in
May13AQI
202035AQI
Highest AQI recorded in
September102AQI
Lowest AQI recorded in
April18AQI
Most & Least Polluted Years Over the Last 6 Years
Corvallis's annual 2025 AQI (24) shows an average percentage change of -6.3% (improved AQI) compared to previous years: 2020 (35), 2021 (20), 2022 (21), 2023 (34), 2024 (25).