Sisters, Redmond, 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
Sisters, Redmond, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 61 of Moderate air quality, showing improvement over 2023 on the same day.
Day & Night AQI Trend: 15th Aug - 16th Aug 2026
Sisters, Redmond, Oregon, United States
5 AM15th Aug 2026
8 PM
4 AM16th Aug 2026
80AQI
46AQI
66AQI
46AQI
In the last 24 hours,
Sisters's AQI reached its highest point of 80 at 1 PM during the Day, while the lowest point, 46, was recorded at 4 AM during the Night between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Sisters, Redmond, Oregon, United States
21°C11/31°C
22°C10/33°C
23°C19/28°C
25°C16/34°C
26°C20/36°C
22°C14/31°C
23°C13/32°C
21°C14/27°C
20°C11/29°C
21°C11/30°C
21°C13/28°C
20°C11/30°C
21°C12/30°C
23°C13/33°C
20°C14/25°C
16°C8/24°C
17°C7/26°C
20°C10/30°C
23°C13/35°C
25°C16/35°C
26°C17/34°C
24°C15/32°C
22°C14/31°C
22°C12/31°C
21°C12/29°C
20°C13/27°C
20°C11/28°C
21°C14/29°C
19°C12/26°C
20°C11/29°C
68AQI
58AQI
64AQI
57AQI
2026 Days Vs Air Quality
Sisters, Redmond, Oregon, United States
84%
188
16%
36
Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2026, 84% of 228 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
Sisters, Redmond, Oregon, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
53AQI (US)
27AQI (US)
9AQI (US)
10AQI (US)
19AQI (US)
10AQI (US)
12AQI (US)
19AQI (US)
28AQI (US)
26AQI (US)
27AQI (US)
22AQI (US)
27AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
30AQI (US)
33AQI (US)
27AQI (US)
23AQI (US)
34AQI (US)
49AQI (US)
53AQI (US)
47AQI (US)
45AQI (US)
46AQI (US)
44AQI (US)
46AQI (US)
52AQI (US)
51AQI (US)
46AQI (US)
46AQI (US)
49AQI (US)
48AQI (US)
47AQI (US)
47AQI (US)
42AQI (US)
42AQI (US)
46AQI (US)
46AQI (US)
47AQI (US)
47AQI (US)
48AQI (US)
53AQI (US)
50AQI (US)
40AQI (US)
44AQI (US)
46AQI (US)
43AQI (US)
44AQI (US)
43AQI (US)
38AQI (US)
38AQI (US)
40AQI (US)
45AQI (US)
42AQI (US)
38AQI (US)
36AQI (US)
38AQI (US)
42AQI (US)
56AQI (US)
47AQI (US)
46AQI (US)
42AQI (US)
38AQI (US)
40AQI (US)
42AQI (US)
40AQI (US)
34AQI (US)
41AQI (US)
42AQI (US)
40AQI (US)
36AQI (US)
36AQI (US)
40AQI (US)
34AQI (US)
32AQI (US)
33AQI (US)
39AQI (US)
36AQI (US)
36AQI (US)
39AQI (US)
38AQI (US)
35AQI (US)
34AQI (US)
34AQI (US)
34AQI (US)
29AQI (US)
28AQI (US)
27AQI (US)
34AQI (US)
35AQI (US)
30AQI (US)
29AQI (US)
28AQI (US)
30AQI (US)
29AQI (US)
33AQI (US)
31AQI (US)
32AQI (US)
35AQI (US)
31AQI (US)
34AQI (US)
35AQI (US)
33AQI (US)
32AQI (US)
32AQI (US)
34AQI (US)
30AQI (US)
30AQI (US)
27AQI (US)
30AQI (US)
32AQI (US)
33AQI (US)
29AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
27AQI (US)
26AQI (US)
23AQI (US)
29AQI (US)
33AQI (US)
30AQI (US)
28AQI (US)
28AQI (US)
34AQI (US)
30AQI (US)
28AQI (US)
29AQI (US)
26AQI (US)
39AQI (US)
41AQI (US)
40AQI (US)
37AQI (US)
33AQI (US)
30AQI (US)
32AQI (US)
36AQI (US)
34AQI (US)
31AQI (US)
31AQI (US)
27AQI (US)
28AQI (US)
27AQI (US)
26AQI (US)
28AQI (US)
30AQI (US)
31AQI (US)
31AQI (US)
30AQI (US)
26AQI (US)
28AQI (US)
25AQI (US)
24AQI (US)
26AQI (US)
26AQI (US)
28AQI (US)
28AQI (US)
27AQI (US)
25AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
28AQI (US)
27AQI (US)
25AQI (US)
24AQI (US)
22AQI (US)
25AQI (US)
24AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
30AQI (US)
28AQI (US)
25AQI (US)
27AQI (US)
26AQI (US)
27AQI (US)
28AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
29AQI (US)
27AQI (US)
29AQI (US)
33AQI (US)
30AQI (US)
29AQI (US)
31AQI (US)
31AQI (US)
28AQI (US)
29AQI (US)
59AQI (US)
59AQI (US)
65AQI (US)
69AQI (US)
71AQI (US)
74AQI (US)
71AQI (US)
59AQI (US)
60AQI (US)
60AQI (US)
64AQI (US)
65AQI (US)
64AQI (US)
64AQI (US)
61AQI (US)
60AQI (US)
51AQI (US)
56AQI (US)
71AQI (US)
71AQI (US)
69AQI (US)
64AQI (US)
58AQI (US)
69AQI (US)
71AQI (US)
65AQI (US)
62AQI (US)
67AQI (US)
64AQI (US)
61AQI (US)
32AQI (US)
44AQI (US)
38AQI (US)
31AQI (US)
31AQI (US)
27AQI (US)
46AQI (US)
64AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
August64AQI (US)
Lowest AQI (US) recorded in
June27AQI (US)
202525AQI (US)
Highest AQI (US) recorded in
September38AQI (US)
Lowest AQI (US) recorded in
May16AQI (US)
202425AQI (US)
Highest AQI (US) recorded in
July44AQI (US)
Lowest AQI (US) recorded in
May14AQI (US)
202329AQI (US)
Highest AQI (US) recorded in
August102AQI (US)
Lowest AQI (US) recorded in
March11AQI (US)
202221AQI (US)
Highest AQI (US) recorded in
August64AQI (US)
Lowest AQI (US) recorded in
June11AQI (US)
202122AQI (US)
Highest AQI (US) recorded in
August54AQI (US)
Lowest AQI (US) recorded in
February10AQI (US)
202038AQI (US)
Highest AQI (US) recorded in
September146AQI (US)
Lowest AQI (US) recorded in
June12AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Sisters's annual 2026 AQI (US) (37) shows an average percentage change of 44.2% (worsened AQI (US)) compared to previous years: 2020 (38), 2021 (22), 2022 (21), 2023 (29), 2024 (25), 2025 (25).