Springfield, 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
Springfield, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 46 of Good air quality on the same day.
Day & Night AQI Trend: 3rd Oct - 4th Oct 2026
Springfield, Oregon, United States
6 AM3rd Oct 2026
7 PM
5 AM4th Oct 2026
54AQI
21AQI
50AQI
41AQI
In the last 24 hours,
Springfield's AQI reached its highest point of 54 at 9 AM during the Day, while the lowest point, 21, was recorded at 4 PM during the Day between 3rd Oct and 4th Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
Springfield, Oregon, United States
16°C11/24°C
15°C11/19°C
17°C10/25°C
19°C9/29°C
21°C11/33°C
20°C10/31°C
16°C9/23°C
14°C9/19°C
13°C10/18°C
14°C9/21°C
14°C9/19°C
16°C9/25°C
16°C11/26°C
17°C11/25°C
16°C10/24°C
17°C10/25°C
16°C11/23°C
15°C10/22°C
15°C9/22°C
15°C10/24°C
12°C10/14°C
12°C8/18°C
13°C8/20°C
13°C7/20°C
15°C9/23°C
16°C11/23°C
17°C10/25°C
18°C10/28°C
16°C9/26°C
17°C10/27°C
50AQI
36AQI
48AQI
37AQI
2026 Days Vs Air Quality
Springfield, Oregon, United States
81%
222
19%
51
Total number of days with different AQI categories in last 277 days in 2026 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 81%
Health Risk Level:
Low
In 2026, 81% of 277 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
Springfield, Oregon, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
68AQI (US)
54AQI (US)
22AQI (US)
16AQI (US)
22AQI (US)
24AQI (US)
9AQI (US)
10AQI (US)
16AQI (US)
26AQI (US)
24AQI (US)
30AQI (US)
48AQI (US)
54AQI (US)
37AQI (US)
26AQI (US)
40AQI (US)
50AQI (US)
53AQI (US)
58AQI (US)
69AQI (US)
50AQI (US)
53AQI (US)
48AQI (US)
46AQI (US)
48AQI (US)
41AQI (US)
45AQI (US)
50AQI (US)
54AQI (US)
44AQI (US)
47AQI (US)
48AQI (US)
49AQI (US)
48AQI (US)
49AQI (US)
43AQI (US)
41AQI (US)
47AQI (US)
44AQI (US)
45AQI (US)
40AQI (US)
42AQI (US)
49AQI (US)
49AQI (US)
39AQI (US)
45AQI (US)
45AQI (US)
41AQI (US)
42AQI (US)
38AQI (US)
35AQI (US)
38AQI (US)
40AQI (US)
48AQI (US)
43AQI (US)
36AQI (US)
38AQI (US)
38AQI (US)
42AQI (US)
62AQI (US)
45AQI (US)
49AQI (US)
39AQI (US)
32AQI (US)
41AQI (US)
44AQI (US)
38AQI (US)
37AQI (US)
42AQI (US)
40AQI (US)
41AQI (US)
34AQI (US)
35AQI (US)
40AQI (US)
32AQI (US)
32AQI (US)
36AQI (US)
42AQI (US)
36AQI (US)
36AQI (US)
39AQI (US)
38AQI (US)
32AQI (US)
28AQI (US)
29AQI (US)
30AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
31AQI (US)
31AQI (US)
27AQI (US)
32AQI (US)
28AQI (US)
31AQI (US)
27AQI (US)
33AQI (US)
29AQI (US)
31AQI (US)
30AQI (US)
26AQI (US)
31AQI (US)
33AQI (US)
33AQI (US)
29AQI (US)
30AQI (US)
34AQI (US)
27AQI (US)
27AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
32AQI (US)
27AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
26AQI (US)
23AQI (US)
24AQI (US)
36AQI (US)
36AQI (US)
29AQI (US)
26AQI (US)
28AQI (US)
31AQI (US)
27AQI (US)
24AQI (US)
26AQI (US)
23AQI (US)
48AQI (US)
52AQI (US)
58AQI (US)
57AQI (US)
55AQI (US)
52AQI (US)
41AQI (US)
50AQI (US)
49AQI (US)
46AQI (US)
43AQI (US)
27AQI (US)
28AQI (US)
27AQI (US)
26AQI (US)
28AQI (US)
29AQI (US)
31AQI (US)
31AQI (US)
30AQI (US)
25AQI (US)
28AQI (US)
25AQI (US)
24AQI (US)
27AQI (US)
26AQI (US)
28AQI (US)
27AQI (US)
27AQI (US)
25AQI (US)
24AQI (US)
26AQI (US)
27AQI (US)
28AQI (US)
28AQI (US)
24AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
28AQI (US)
30AQI (US)
27AQI (US)
25AQI (US)
26AQI (US)
26AQI (US)
27AQI (US)
28AQI (US)
25AQI (US)
26AQI (US)
28AQI (US)
29AQI (US)
27AQI (US)
29AQI (US)
32AQI (US)
30AQI (US)
30AQI (US)
30AQI (US)
30AQI (US)
28AQI (US)
29AQI (US)
50AQI (US)
45AQI (US)
41AQI (US)
46AQI (US)
54AQI (US)
59AQI (US)
56AQI (US)
52AQI (US)
51AQI (US)
54AQI (US)
52AQI (US)
54AQI (US)
51AQI (US)
61AQI (US)
51AQI (US)
51AQI (US)
50AQI (US)
54AQI (US)
72AQI (US)
72AQI (US)
71AQI (US)
66AQI (US)
54AQI (US)
69AQI (US)
58AQI (US)
55AQI (US)
54AQI (US)
56AQI (US)
44AQI (US)
61AQI (US)
48AQI (US)
49AQI (US)
44AQI (US)
46AQI (US)
49AQI (US)
61AQI (US)
62AQI (US)
44AQI (US)
48AQI (US)
48AQI (US)
58AQI (US)
60AQI (US)
58AQI (US)
46AQI (US)
56AQI (US)
60AQI (US)
57AQI (US)
50AQI (US)
54AQI (US)
38AQI (US)
36AQI (US)
49AQI (US)
36AQI (US)
37AQI (US)
46AQI (US)
44AQI (US)
51AQI (US)
54AQI (US)
36AQI (US)
27AQI (US)
40AQI (US)
43AQI (US)
42AQI (US)
46AQI (US)
45AQI (US)
46AQI (US)
46AQI (US)
55AQI (US)
45AQI (US)
59AQI (US)
40AQI (US)
30AQI (US)
33AQI (US)
49AQI (US)
47AQI (US)
38AQI (US)
43AQI (US)
45AQI (US)
46AQI (US)
40AQI (US)
43AQI (US)
37AQI (US)
29AQI (US)
36AQI (US)
26AQI (US)
40AQI (US)
56AQI (US)
44AQI (US)
45AQI (US)
No. of days
202639AQI (US)
Highest AQI (US) recorded in
August56AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202530AQI (US)
Highest AQI (US) recorded in
November45AQI (US)
Lowest AQI (US) recorded in
May19AQI (US)
202424AQI (US)
Highest AQI (US) recorded in
December38AQI (US)
Lowest AQI (US) recorded in
May14AQI (US)
202321AQI (US)
Highest AQI (US) recorded in
November42AQI (US)
Lowest AQI (US) recorded in
April8AQI (US)
202221AQI (US)
Highest AQI (US) recorded in
October39AQI (US)
Lowest AQI (US) recorded in
May12AQI (US)
202125AQI (US)
Highest AQI (US) recorded in
September35AQI (US)
Lowest AQI (US) recorded in
December17AQI (US)
202039AQI (US)
Highest AQI (US) recorded in
September134AQI (US)
Lowest AQI (US) recorded in
June20AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Springfield's annual 2026 AQI (US) (39) shows an average percentage change of 53.3% (worsened AQI (US)) compared to previous years: 2020 (39), 2021 (25), 2022 (21), 2023 (21), 2024 (24), 2025 (30).