Saint Paul, 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
Saint Paul, Minnesota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (28th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 43 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Sep - 29th Sep 2025
Saint Paul, Minnesota, United States
6 AM28th Sep 2025
7 PM
5 AM29th Sep 2025
34AQI
12AQI
47AQI
22AQI
In the last 24 hours,
Saint Paul's AQI reached its highest point of 47 at 2 AM during the Night, while the lowest point, 12, was recorded at 4 PM during the Day between 28th Sep and 29th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Saint Paul, Minnesota, United States
20°C16/26°C
19°C11/28°C
20°C14/27°C
20°C15/26°C
16°C12/19°C
12°C7/16°C
13°C8/17°C
12°C8/16°C
13°C7/21°C
18°C7/28°C
18°C16/20°C
20°C16/24°C
18°C13/25°C
22°C14/31°C
22°C17/27°C
24°C19/30°C
24°C21/29°C
26°C19/35°C
24°C18/31°C
23°C17/28°C
20°C19/23°C
20°C18/23°C
20°C17/26°C
19°C15/22°C
18°C15/23°C
18°C13/25°C
20°C13/30°C
20°C14/29°C
19°C15/25°C
17°C8/28°C
--°C/°C
41AQI
39AQI
46AQI
41AQI
2025 Days Vs Air Quality
Saint Paul, Minnesota, United States
73%
135
23%
43
3%
5
2%
3
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 73%
Health Risk Level:
Low
In 2025, 73% of 272 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
Saint Paul, Minnesota, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI
52AQI
17AQI
15AQI
19AQI
23AQI
25AQI
18AQI
35AQI
23AQI
28AQI
17AQI
25AQI
51AQI
55AQI
54AQI
61AQI
51AQI
23AQI
22AQI
20AQI
44AQI
34AQI
19AQI
27AQI
17AQI
28AQI
32AQI
19AQI
17AQI
29AQI
24AQI
34AQI
16AQI
33AQI
33AQI
17AQI
17AQI
39AQI
24AQI
32AQI
24AQI
19AQI
36AQI
33AQI
33AQI
38AQI
42AQI
36AQI
42AQI
25AQI
16AQI
14AQI
14AQI
15AQI
15AQI
16AQI
15AQI
26AQI
42AQI
49AQI
32AQI
24AQI
29AQI
37AQI
44AQI
56AQI
54AQI
118AQI
90AQI
67AQI
56AQI
63AQI
62AQI
47AQI
75AQI
81AQI
105AQI
64AQI
40AQI
42AQI
46AQI
38AQI
46AQI
43AQI
39AQI
47AQI
48AQI
50AQI
44AQI
47AQI
22AQI
18AQI
34AQI
31AQI
31AQI
37AQI
39AQI
41AQI
52AQI
45AQI
55AQI
57AQI
39AQI
38AQI
33AQI
35AQI
149AQI
152AQI
96AQI
67AQI
33AQI
20AQI
25AQI
34AQI
30AQI
61AQI
60AQI
45AQI
33AQI
115AQI
63AQI
34AQI
32AQI
41AQI
94AQI
154AQI
162AQI
136AQI
89AQI
84AQI
71AQI
59AQI
56AQI
52AQI
46AQI
35AQI
74AQI
81AQI
65AQI
64AQI
53AQI
31AQI
30AQI
22AQI
40AQI
32AQI
29AQI
33AQI
24AQI
18AQI
21AQI
30AQI
39AQI
46AQI
37AQI
32AQI
41AQI
39AQI
35AQI
49AQI
31AQI
18AQI
21AQI
28AQI
44AQI
54AQI
50AQI
44AQI
52AQI
57AQI
58AQI
55AQI
56AQI
53AQI
36AQI
32AQI
29AQI
27AQI
21AQI
26AQI
25AQI
38AQI
37AQI
31AQI
43AQI
25AQI
30AQI
28AQI
53AQI
58AQI
53AQI
39AQI
No. of days
202543AQI
Highest AQI recorded in
July58AQI
Lowest AQI recorded in
March25AQI
Most & Least Polluted Years Over the Last 1 Years
Saint Paul's annual 2025 AQI (43) shows an average percentage change of NaN% (improved AQI) compared to previous years: .