Pendleton, 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
Pendleton, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (24th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 51 of Moderate air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 24th Sep - 25th Sep 2026
Pendleton, Oregon, United States
6 AM24th Sep 2026
7 PM
5 AM25th Sep 2026
62AQI
38AQI
58AQI
46AQI
In the last 24 hours,
Pendleton's AQI reached its highest point of 62 at 9 AM during the Day, while the lowest point, 38, was recorded at 6 PM during the Day between 24th Sep and 25th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Pendleton, Oregon, United States
24°C17/31°C
21°C13/29°C
19°C14/25°C
18°C9/27°C
21°C10/31°C
21°C13/30°C
19°C13/26°C
15°C13/20°C
14°C8/23°C
17°C9/26°C
15°C9/21°C
18°C11/26°C
18°C9/27°C
20°C9/29°C
22°C11/32°C
20°C13/25°C
18°C9/26°C
13°C10/17°C
15°C11/19°C
17°C13/19°C
17°C12/22°C
17°C14/18°C
20°C17/23°C
21°C17/25°C
23°C18/27°C
23°C19/27°C
20°C16/23°C
18°C15/22°C
19°C15/24°C
15°C11/20°C
53AQI
44AQI
47AQI
46AQI
2026 Days Vs Air Quality
Pendleton, Oregon, United States
80%
212
17%
46
2%
5
0.3%
1
Total number of days with different AQI categories in last 268 days in 2026 (97 days remaining)
Under WHO’s Safe Air Quality Limits: 80%
Health Risk Level:
Low
In 2026, 80% of 268 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
Pendleton, Oregon, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
50AQI (US)
41AQI (US)
36AQI (US)
25AQI (US)
29AQI (US)
33AQI (US)
9AQI (US)
10AQI (US)
13AQI (US)
64AQI (US)
48AQI (US)
41AQI (US)
42AQI (US)
37AQI (US)
47AQI (US)
23AQI (US)
19AQI (US)
28AQI (US)
26AQI (US)
31AQI (US)
27AQI (US)
37AQI (US)
38AQI (US)
34AQI (US)
37AQI (US)
37AQI (US)
27AQI (US)
31AQI (US)
37AQI (US)
49AQI (US)
28AQI (US)
42AQI (US)
47AQI (US)
42AQI (US)
36AQI (US)
40AQI (US)
29AQI (US)
28AQI (US)
39AQI (US)
44AQI (US)
37AQI (US)
32AQI (US)
24AQI (US)
23AQI (US)
28AQI (US)
29AQI (US)
43AQI (US)
39AQI (US)
33AQI (US)
32AQI (US)
29AQI (US)
28AQI (US)
34AQI (US)
31AQI (US)
45AQI (US)
38AQI (US)
30AQI (US)
33AQI (US)
30AQI (US)
32AQI (US)
45AQI (US)
28AQI (US)
40AQI (US)
37AQI (US)
28AQI (US)
37AQI (US)
52AQI (US)
30AQI (US)
32AQI (US)
39AQI (US)
48AQI (US)
41AQI (US)
34AQI (US)
28AQI (US)
21AQI (US)
26AQI (US)
32AQI (US)
26AQI (US)
39AQI (US)
35AQI (US)
31AQI (US)
29AQI (US)
26AQI (US)
30AQI (US)
19AQI (US)
16AQI (US)
21AQI (US)
12AQI (US)
32AQI (US)
20AQI (US)
23AQI (US)
25AQI (US)
24AQI (US)
29AQI (US)
22AQI (US)
24AQI (US)
25AQI (US)
26AQI (US)
27AQI (US)
30AQI (US)
29AQI (US)
24AQI (US)
41AQI (US)
29AQI (US)
32AQI (US)
28AQI (US)
19AQI (US)
18AQI (US)
28AQI (US)
41AQI (US)
21AQI (US)
24AQI (US)
22AQI (US)
28AQI (US)
17AQI (US)
26AQI (US)
19AQI (US)
24AQI (US)
24AQI (US)
23AQI (US)
24AQI (US)
33AQI (US)
33AQI (US)
52AQI (US)
22AQI (US)
44AQI (US)
26AQI (US)
25AQI (US)
29AQI (US)
62AQI (US)
23AQI (US)
42AQI (US)
48AQI (US)
55AQI (US)
48AQI (US)
45AQI (US)
46AQI (US)
38AQI (US)
40AQI (US)
46AQI (US)
42AQI (US)
45AQI (US)
19AQI (US)
16AQI (US)
26AQI (US)
34AQI (US)
16AQI (US)
20AQI (US)
21AQI (US)
14AQI (US)
24AQI (US)
16AQI (US)
28AQI (US)
17AQI (US)
21AQI (US)
22AQI (US)
42AQI (US)
26AQI (US)
20AQI (US)
24AQI (US)
14AQI (US)
18AQI (US)
26AQI (US)
52AQI (US)
26AQI (US)
21AQI (US)
30AQI (US)
34AQI (US)
17AQI (US)
25AQI (US)
36AQI (US)
27AQI (US)
34AQI (US)
37AQI (US)
24AQI (US)
31AQI (US)
29AQI (US)
16AQI (US)
15AQI (US)
15AQI (US)
21AQI (US)
22AQI (US)
20AQI (US)
28AQI (US)
22AQI (US)
20AQI (US)
18AQI (US)
23AQI (US)
37AQI (US)
24AQI (US)
21AQI (US)
34AQI (US)
34AQI (US)
40AQI (US)
90AQI (US)
54AQI (US)
47AQI (US)
91AQI (US)
114AQI (US)
116AQI (US)
97AQI (US)
64AQI (US)
66AQI (US)
66AQI (US)
76AQI (US)
79AQI (US)
56AQI (US)
75AQI (US)
69AQI (US)
72AQI (US)
50AQI (US)
95AQI (US)
146AQI (US)
154AQI (US)
150AQI (US)
124AQI (US)
82AQI (US)
63AQI (US)
66AQI (US)
71AQI (US)
69AQI (US)
76AQI (US)
66AQI (US)
77AQI (US)
78AQI (US)
70AQI (US)
57AQI (US)
59AQI (US)
62AQI (US)
66AQI (US)
64AQI (US)
44AQI (US)
60AQI (US)
53AQI (US)
56AQI (US)
49AQI (US)
50AQI (US)
69AQI (US)
42AQI (US)
57AQI (US)
52AQI (US)
51AQI (US)
43AQI (US)
31AQI (US)
42AQI (US)
44AQI (US)
40AQI (US)
32AQI (US)
48AQI (US)
54AQI (US)
49AQI (US)
52AQI (US)
33AQI (US)
21AQI (US)
36AQI (US)
42AQI (US)
46AQI (US)
48AQI (US)
43AQI (US)
46AQI (US)
47AQI (US)
54AQI (US)
50AQI (US)
51AQI (US)
33AQI (US)
34AQI (US)
31AQI (US)
26AQI (US)
35AQI (US)
26AQI (US)
50AQI (US)
74AQI (US)
44AQI (US)
No. of days
202639AQI (US)
Highest AQI (US) recorded in
August74AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202529AQI (US)
Highest AQI (US) recorded in
September47AQI (US)
Lowest AQI (US) recorded in
May15AQI (US)
202423AQI (US)
Highest AQI (US) recorded in
July36AQI (US)
Lowest AQI (US) recorded in
May9AQI (US)
202323AQI (US)
Highest AQI (US) recorded in
August50AQI (US)
Lowest AQI (US) recorded in
April11AQI (US)
202227AQI (US)
Highest AQI (US) recorded in
September44AQI (US)
Lowest AQI (US) recorded in
May10AQI (US)
202125AQI (US)
Highest AQI (US) recorded in
August52AQI (US)
Lowest AQI (US) recorded in
May12AQI (US)
202037AQI (US)
Highest AQI (US) recorded in
September109AQI (US)
Lowest AQI (US) recorded in
April16AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Pendleton's annual 2026 AQI (US) (39) shows an average percentage change of 46.5% (worsened AQI (US)) compared to previous years: 2020 (37), 2021 (25), 2022 (27), 2023 (23), 2024 (23), 2025 (29).