Duluth Wdse, Duluth, Minnesota, 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
Duluth Wdse, Duluth, Minnesota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (2nd September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 40 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Sep - 3rd Sep 2025
Duluth Wdse, Duluth, Minnesota, United States
6 AM2nd Sep 2025
8 PM
5 AM3rd Sep 2025
44AQI
26AQI
51AQI
26AQI
In the last 24 hours,
Duluth Wdse's AQI reached its highest point of 51 at 2 AM during the Night, while the lowest point, 26, was recorded at 5 AM during the Night between 2nd Sep and 3rd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Duluth Wdse, Duluth, Minnesota, United States
19°C14/25°C
19°C16/24°C
19°C16/23°C
24°C19/32°C
24°C19/29°C
26°C23/29°C
24°C17/31°C
24°C17/31°C
22°C17/26°C
19°C13/23°C
20°C15/26°C
24°C19/28°C
18°C15/19°C
17°C15/19°C
17°C15/19°C
21°C16/28°C
20°C15/24°C
19°C12/26°C
23°C19/26°C
18°C14/21°C
15°C13/17°C
15°C6/23°C
17°C8/26°C
19°C14/26°C
16°C12/20°C
15°C8/23°C
17°C8/28°C
21°C13/30°C
20°C13/26°C
19°C14/24°C
--°C/°C
44AQI
40AQI
45AQI
42AQI
2025 Days Vs Air Quality
Duluth Wdse, Duluth, Minnesota, United States
84%
207
13%
32
2%
4
0.8%
2
Total number of days with different AQI categories in last 246 days in 2025 (119 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 246 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
Duluth Wdse, Duluth, Minnesota, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI
22AQI
20AQI
21AQI
23AQI
26AQI
25AQI
24AQI
44AQI
30AQI
22AQI
22AQI
28AQI
23AQI
26AQI
25AQI
24AQI
26AQI
25AQI
24AQI
24AQI
24AQI
24AQI
26AQI
29AQI
27AQI
28AQI
27AQI
28AQI
31AQI
27AQI
27AQI
30AQI
27AQI
24AQI
26AQI
26AQI
27AQI
27AQI
28AQI
29AQI
25AQI
29AQI
25AQI
47AQI
38AQI
24AQI
23AQI
21AQI
21AQI
25AQI
26AQI
39AQI
60AQI
32AQI
25AQI
26AQI
27AQI
28AQI
29AQI
27AQI
33AQI
37AQI
29AQI
29AQI
31AQI
30AQI
30AQI
27AQI
29AQI
29AQI
23AQI
34AQI
30AQI
15AQI
16AQI
16AQI
17AQI
19AQI
19AQI
28AQI
22AQI
17AQI
20AQI
21AQI
17AQI
17AQI
16AQI
16AQI
17AQI
16AQI
17AQI
15AQI
20AQI
19AQI
21AQI
15AQI
17AQI
23AQI
39AQI
40AQI
47AQI
50AQI
25AQI
17AQI
16AQI
24AQI
38AQI
18AQI
19AQI
15AQI
21AQI
16AQI
17AQI
18AQI
19AQI
22AQI
31AQI
15AQI
16AQI
22AQI
19AQI
21AQI
24AQI
19AQI
26AQI
17AQI
15AQI
26AQI
20AQI
25AQI
33AQI
44AQI
47AQI
29AQI
23AQI
16AQI
15AQI
14AQI
14AQI
16AQI
14AQI
13AQI
18AQI
23AQI
19AQI
24AQI
24AQI
36AQI
38AQI
45AQI
44AQI
52AQI
75AQI
62AQI
59AQI
55AQI
67AQI
60AQI
53AQI
66AQI
83AQI
57AQI
33AQI
28AQI
35AQI
41AQI
35AQI
40AQI
44AQI
35AQI
36AQI
35AQI
39AQI
43AQI
37AQI
30AQI
20AQI
26AQI
23AQI
21AQI
36AQI
26AQI
40AQI
46AQI
29AQI
51AQI
34AQI
33AQI
33AQI
31AQI
35AQI
101AQI
124AQI
115AQI
82AQI
50AQI
36AQI
41AQI
29AQI
53AQI
58AQI
60AQI
43AQI
40AQI
60AQI
64AQI
36AQI
35AQI
51AQI
97AQI
157AQI
162AQI
145AQI
97AQI
86AQI
83AQI
63AQI
58AQI
51AQI
46AQI
34AQI
78AQI
72AQI
66AQI
67AQI
58AQI
34AQI
18AQI
17AQI
31AQI
21AQI
26AQI
42AQI
21AQI
16AQI
19AQI
27AQI
35AQI
28AQI
21AQI
34AQI
46AQI
46AQI
40AQI
26AQI
29AQI
24AQI
23AQI
24AQI
44AQI
56AQI
52AQI
43AQI
No. of days
202535AQI
Highest AQI recorded in
July56AQI
Lowest AQI recorded in
April23AQI
202431AQI
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
November20AQI
202338AQI
Highest AQI recorded in
June65AQI
Lowest AQI recorded in
October23AQI
202227AQI
Highest AQI recorded in
March31AQI
Lowest AQI recorded in
August16AQI
202128AQI
Highest AQI recorded in
July40AQI
Lowest AQI recorded in
October18AQI
202031AQI
Highest AQI recorded in
March35AQI
Lowest AQI recorded in
August26AQI
Most & Least Polluted Years Over the Last 6 Years
Duluth Wdse's annual 2025 AQI (35) shows an average percentage change of 14.4% (worsened AQI) compared to previous years: 2020 (31), 2021 (28), 2022 (27), 2023 (38), 2024 (31).