Chester Park, 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!
October Air Quality Analysis
Chester Park, Duluth, Minnesota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (10th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 32 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 10th Oct - 11th Oct 2025
Chester Park, Duluth, Minnesota, United States
7 AM10th Oct 2025
6 PM
6 AM11th Oct 2025
51AQI
15AQI
56AQI
17AQI
In the last 24 hours,
Chester Park's AQI reached its highest point of 56 at 4 AM during the Night, while the lowest point, 15, was recorded at 3 PM during the Day between 10th Oct and 11th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Chester Park, Duluth, Minnesota, United States
14°C11/17°C
15°C13/22°C
16°C14/18°C
15°C13/19°C
18°C13/25°C
23°C15/33°C
20°C15/26°C
15°C13/17°C
13°C12/14°C
15°C13/20°C
16°C15/17°C
15°C14/18°C
17°C15/21°C
17°C13/22°C
19°C13/28°C
15°C12/19°C
18°C12/23°C
17°C10/26°C
17°C12/23°C
15°C14/17°C
15°C14/18°C
17°C15/21°C
18°C15/24°C
18°C14/23°C
20°C14/24°C
13°C7/18°C
11°C8/16°C
9°C2/17°C
12°C6/21°C
15°C13/19°C
--°C/°C
39AQI
35AQI
40AQI
37AQI
2025 Days Vs Air Quality
Chester Park, Duluth, Minnesota, United States
77%
152
20%
40
2%
4
1%
2
Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)
Under WHO’s Safe Air Quality Limits: 77%
Health Risk Level:
Low
In 2025, 77% of 284 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
Chester Park, Duluth, Minnesota, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
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
56AQI
33AQI
28AQI
35AQI
41AQI
35AQI
40AQI
44AQI
35AQI
36AQI
35AQI
39AQI
43AQI
37AQI
30AQI
20AQI
26AQI
23AQI
21AQI
36AQI
26AQI
41AQI
47AQI
29AQI
51AQI
34AQI
33AQI
33AQI
31AQI
35AQI
101AQI
124AQI
115AQI
82AQI
49AQI
36AQI
41AQI
29AQI
53AQI
58AQI
60AQI
43AQI
40AQI
60AQI
64AQI
36AQI
35AQI
51AQI
98AQI
158AQI
162AQI
144AQI
96AQI
86AQI
83AQI
63AQI
57AQI
51AQI
46AQI
34AQI
78AQI
71AQI
66AQI
67AQI
58AQI
34AQI
18AQI
18AQI
31AQI
21AQI
27AQI
42AQI
21AQI
16AQI
19AQI
27AQI
35AQI
28AQI
21AQI
34AQI
46AQI
46AQI
40AQI
37AQI
19AQI
17AQI
18AQI
23AQI
33AQI
53AQI
41AQI
27AQI
43AQI
49AQI
52AQI
54AQI
58AQI
53AQI
31AQI
18AQI
21AQI
27AQI
20AQI
23AQI
35AQI
43AQI
32AQI
30AQI
22AQI
40AQI
27AQI
30AQI
53AQI
69AQI
64AQI
72AQI
13AQI
22AQI
19AQI
38AQI
32AQI
17AQI
23AQI
24AQI
44AQI
56AQI
52AQI
34AQI
41AQI
No. of days
202538AQI
Highest AQI recorded in
July56AQI
Lowest AQI recorded in
March17AQI
Most & Least Polluted Years Over the Last 1 Years
Chester Park's annual 2025 AQI (38) shows an average percentage change of NaN% (improved AQI) compared to previous years: .