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!
September Air Quality Analysis
Springfield, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (27th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 33 of Good air quality, showing improvement over 2022 on the same day.
Day & Night AQI Trend: 26th Sep - 27th Sep 2026
Springfield, Oregon, United States
6 AM26th Sep 2026
7 PM
5 AM27th Sep 2026
52AQI
16AQI
50AQI
17AQI
In the last 24 hours,
Springfield's AQI reached its highest point of 52 at 10 AM during the Day, while the lowest point, 16, was recorded at 2 PM during the Day between 26th Sep and 27th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Springfield, Oregon, United States
18°C11/26°C
18°C8/28°C
18°C10/29°C
18°C14/24°C
15°C12/18°C
14°C11/20°C
14°C11/19°C
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
51AQI
39AQI
49AQI
40AQI
2026 Days Vs Air Quality
Springfield, Oregon, United States
81%
216
19%
51
Total number of days with different AQI categories in last 270 days in 2026 (95 days remaining)
Under WHO’s Safe Air Quality Limits: 81%
Health Risk Level:
Low
In 2026, 81% of 270 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)
40AQI (US)
43AQI (US)
37AQI (US)
29AQI (US)
36AQI (US)
26AQI (US)
40AQI (US)
56AQI (US)
44AQI (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).