Grand Portage, 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
Grand Portage, Minnesota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (25th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 14 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 25th Oct - 26th Oct 2025
Grand Portage, Minnesota, United States
7 AM25th Oct 2025
6 PM
6 AM26th Oct 2025
18AQI
11AQI
22AQI
17AQI
In the last 24 hours,
Grand Portage's AQI reached its highest point of 22 at 1 AM during the Night, while the lowest point, 11, was recorded at 1 PM during the Day between 25th Oct and 26th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Grand Portage, Minnesota, United States
12°C7/18°C
15°C10/21°C
18°C12/25°C
19°C14/29°C
15°C12/19°C
15°C12/19°C
19°C15/23°C
18°C14/23°C
20°C13/27°C
20°C13/24°C
10°C7/14°C
8°C5/12°C
6°C1/12°C
9°C4/15°C
11°C8/15°C
8°C3/14°C
12°C9/14°C
10°C5/13°C
7°C2/12°C
8°C6/13°C
8°C4/11°C
14°C11/17°C
11°C9/14°C
7°C4/10°C
6°C2/10°C
6°C4/7°C
4°C2/6°C
2°C0/4°C
1°C-1/5°C
6°C1/11°C
--°C/°C
29AQI
26AQI
34AQI
28AQI
2025 Days Vs Air Quality
Grand Portage, Minnesota, United States
86%
184
12%
25
1%
3
0.4%
1
Total number of days with different AQI categories in last 299 days in 2025 (66 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% of 299 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
Grand Portage, Minnesota, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
17AQI
18AQI
15AQI
16AQI
16AQI
15AQI
17AQI
16AQI
17AQI
16AQI
16AQI
15AQI
14AQI
18AQI
21AQI
26AQI
30AQI
35AQI
27AQI
14AQI
13AQI
18AQI
21AQI
17AQI
14AQI
13AQI
13AQI
15AQI
14AQI
16AQI
14AQI
15AQI
18AQI
13AQI
13AQI
16AQI
16AQI
14AQI
15AQI
16AQI
19AQI
16AQI
15AQI
23AQI
15AQI
15AQI
24AQI
30AQI
26AQI
22AQI
24AQI
15AQI
17AQI
13AQI
13AQI
18AQI
12AQI
11AQI
13AQI
15AQI
17AQI
19AQI
20AQI
32AQI
29AQI
29AQI
28AQI
31AQI
52AQI
50AQI
53AQI
48AQI
59AQI
49AQI
58AQI
50AQI
64AQI
40AQI
26AQI
23AQI
26AQI
30AQI
26AQI
40AQI
31AQI
29AQI
34AQI
34AQI
38AQI
36AQI
36AQI
32AQI
26AQI
30AQI
24AQI
22AQI
29AQI
35AQI
35AQI
37AQI
42AQI
37AQI
26AQI
28AQI
30AQI
29AQI
31AQI
39AQI
57AQI
81AQI
83AQI
49AQI
39AQI
51AQI
40AQI
55AQI
50AQI
43AQI
44AQI
44AQI
50AQI
60AQI
38AQI
40AQI
59AQI
74AQI
147AQI
161AQI
144AQI
101AQI
80AQI
80AQI
66AQI
67AQI
52AQI
47AQI
35AQI
48AQI
64AQI
64AQI
45AQI
53AQI
31AQI
16AQI
15AQI
17AQI
20AQI
22AQI
29AQI
20AQI
16AQI
17AQI
21AQI
26AQI
23AQI
18AQI
21AQI
37AQI
41AQI
33AQI
24AQI
18AQI
16AQI
16AQI
18AQI
26AQI
35AQI
28AQI
24AQI
33AQI
41AQI
43AQI
47AQI
53AQI
50AQI
26AQI
18AQI
18AQI
23AQI
24AQI
28AQI
31AQI
27AQI
23AQI
24AQI
26AQI
32AQI
21AQI
25AQI
41AQI
50AQI
54AQI
57AQI
35AQI
28AQI
22AQI
33AQI
30AQI
30AQI
33AQI
41AQI
24AQI
29AQI
26AQI
48AQI
52AQI
30AQI
24AQI
19AQI
11AQI
11AQI
17AQI
14AQI
16AQI
17AQI
19AQI
38AQI
48AQI
47AQI
29AQI
31AQI
No. of days
202532AQI
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
March16AQI
Most & Least Polluted Years Over the Last 1 Years
Grand Portage's annual 2025 AQI (32) shows an average percentage change of NaN% (improved AQI) compared to previous years: .