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 (11th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 28 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Oct - 12th Oct 2025
Springfield, Oregon, United States
7 AM11th Oct 2025
7 PM
6 AM12th Oct 2025
41AQI
37AQI
40AQI
33AQI
In the last 24 hours,
Springfield's AQI reached its highest point of 41 at 1 PM during the Day, while the lowest point, 33, was recorded at 4 AM during the Night between 11th Oct and 12th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Springfield, Oregon, United States
19°C15/27°C
18°C13/27°C
18°C15/21°C
17°C8/27°C
22°C13/35°C
21°C14/29°C
19°C15/26°C
20°C11/30°C
19°C12/27°C
15°C12/17°C
16°C6/27°C
19°C8/32°C
20°C9/32°C
19°C11/28°C
16°C7/27°C
17°C8/29°C
17°C9/27°C
15°C12/19°C
15°C10/22°C
15°C11/19°C
14°C11/21°C
14°C9/22°C
15°C11/20°C
16°C9/25°C
17°C5/31°C
17°C6/29°C
12°C7/18°C
11°C6/19°C
13°C10/20°C
12°C8/16°C
--°C/°C
41AQI
37AQI
40AQI
37AQI
2025 Days Vs Air Quality
Springfield, Oregon, United States
94%
268
6%
16
Total number of days with different AQI categories in last 285 days in 2025 (80 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2025, 94% of 285 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
Springfield, Oregon, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
37AQI
32AQI
29AQI
29AQI
27AQI
27AQI
52AQI
42AQI
47AQI
36AQI
37AQI
36AQI
38AQI
36AQI
40AQI
39AQI
41AQI
37AQI
48AQI
48AQI
48AQI
55AQI
57AQI
57AQI
47AQI
49AQI
54AQI
56AQI
55AQI
53AQI
43AQI
34AQI
33AQI
31AQI
39AQI
30AQI
34AQI
28AQI
29AQI
30AQI
35AQI
33AQI
38AQI
35AQI
31AQI
27AQI
29AQI
28AQI
27AQI
28AQI
27AQI
31AQI
31AQI
28AQI
32AQI
30AQI
33AQI
33AQI
38AQI
34AQI
26AQI
22AQI
24AQI
28AQI
26AQI
30AQI
27AQI
30AQI
25AQI
32AQI
23AQI
22AQI
19AQI
20AQI
17AQI
19AQI
18AQI
19AQI
17AQI
17AQI
17AQI
19AQI
19AQI
25AQI
23AQI
18AQI
18AQI
16AQI
23AQI
16AQI
18AQI
18AQI
20AQI
24AQI
25AQI
24AQI
17AQI
16AQI
13AQI
18AQI
17AQI
18AQI
23AQI
28AQI
32AQI
27AQI
29AQI
28AQI
24AQI
21AQI
16AQI
18AQI
24AQI
32AQI
25AQI
25AQI
23AQI
17AQI
20AQI
23AQI
32AQI
22AQI
16AQI
16AQI
19AQI
21AQI
22AQI
20AQI
28AQI
24AQI
17AQI
17AQI
15AQI
21AQI
20AQI
20AQI
14AQI
16AQI
19AQI
13AQI
16AQI
17AQI
18AQI
22AQI
16AQI
15AQI
16AQI
23AQI
18AQI
22AQI
24AQI
16AQI
21AQI
22AQI
18AQI
19AQI
27AQI
20AQI
31AQI
35AQI
34AQI
33AQI
33AQI
25AQI
22AQI
24AQI
24AQI
20AQI
15AQI
17AQI
16AQI
13AQI
13AQI
19AQI
32AQI
32AQI
18AQI
16AQI
15AQI
19AQI
26AQI
24AQI
16AQI
16AQI
17AQI
22AQI
22AQI
23AQI
27AQI
17AQI
15AQI
19AQI
22AQI
21AQI
17AQI
23AQI
36AQI
28AQI
32AQI
23AQI
23AQI
22AQI
27AQI
31AQI
24AQI
19AQI
18AQI
17AQI
21AQI
22AQI
25AQI
31AQI
22AQI
18AQI
23AQI
27AQI
29AQI
18AQI
16AQI
19AQI
24AQI
28AQI
43AQI
38AQI
38AQI
17AQI
15AQI
14AQI
17AQI
16AQI
19AQI
19AQI
21AQI
35AQI
52AQI
52AQI
51AQI
59AQI
46AQI
39AQI
32AQI
34AQI
44AQI
29AQI
38AQI
64AQI
69AQI
60AQI
40AQI
40AQI
39AQI
34AQI
43AQI
43AQI
32AQI
41AQI
17AQI
21AQI
30AQI
29AQI
23AQI
48AQI
41AQI
26AQI
23AQI
30AQI
49AQI
51AQI
26AQI
24AQI
36AQI
40AQI
19AQI
18AQI
22AQI
31AQI
29AQI
32AQI
25AQI
28AQI
46AQI
24AQI
37AQI
28AQI
43AQI
32AQI
22AQI
22AQI
19AQI
23AQI
23AQI
30AQI
37AQI
29AQI
No. of days
202528AQI
Highest AQI recorded in
January43AQI
Lowest AQI recorded in
May19AQI
202424AQI
Highest AQI recorded in
December38AQI
Lowest AQI recorded in
May14AQI
202321AQI
Highest AQI recorded in
November42AQI
Lowest AQI recorded in
April8AQI
202221AQI
Highest AQI recorded in
October39AQI
Lowest AQI recorded in
May12AQI
202125AQI
Highest AQI recorded in
September35AQI
Lowest AQI recorded in
December17AQI
202039AQI
Highest AQI recorded in
September134AQI
Lowest AQI recorded in
June20AQI
Most & Least Polluted Years Over the Last 6 Years
Springfield's annual 2025 AQI (28) shows an average percentage change of 13.4% (worsened AQI) compared to previous years: 2020 (39), 2021 (25), 2022 (21), 2023 (21), 2024 (24).