St Paul Harding HS., Maplewood, 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
St Paul Harding HS., Maplewood, Minnesota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 54 of Moderate air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 16th Sep - 17th Sep 2025
St Paul Harding HS., Maplewood, Minnesota, United States
6 AM16th Sep 2025
7 PM
5 AM17th Sep 2025
58AQI
54AQI
56AQI
54AQI
In the last 24 hours,
St Paul Harding HS.'s AQI reached its highest point of 58 at 12 PM during the Day, while the lowest point, 54, was recorded at 5 AM during the Night between 16th Sep and 17th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
St Paul Harding HS., Maplewood, Minnesota, United States
22°C19/26°C
24°C19/32°C
23°C18/27°C
23°C17/28°C
22°C20/27°C
19°C14/23°C
16°C13/20°C
16°C10/23°C
18°C12/23°C
20°C11/29°C
20°C14/25°C
18°C15/22°C
19°C16/25°C
19°C11/25°C
20°C13/27°C
20°C15/25°C
16°C11/19°C
12°C6/16°C
12°C7/17°C
12°C8/16°C
12°C7/19°C
18°C7/28°C
18°C16/20°C
20°C16/24°C
18°C12/26°C
21°C14/31°C
22°C17/27°C
24°C19/31°C
24°C20/30°C
26°C19/35°C
--°C/°C
35AQI
35AQI
39AQI
36AQI
2025 Days Vs Air Quality
St Paul Harding HS., Maplewood, Minnesota, United States
81%
209
16%
42
2%
5
1%
3
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 81%
Health Risk Level:
Low
In 2025, 81% of 260 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
St Paul Harding HS., Maplewood, Minnesota, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
22AQI
26AQI
20AQI
18AQI
18AQI
18AQI
24AQI
30AQI
53AQI
37AQI
25AQI
29AQI
19AQI
24AQI
32AQI
23AQI
23AQI
19AQI
19AQI
20AQI
21AQI
25AQI
24AQI
29AQI
24AQI
21AQI
20AQI
22AQI
22AQI
33AQI
31AQI
20AQI
45AQI
24AQI
20AQI
22AQI
27AQI
26AQI
33AQI
29AQI
40AQI
23AQI
35AQI
28AQI
42AQI
35AQI
21AQI
22AQI
22AQI
22AQI
24AQI
30AQI
42AQI
65AQI
23AQI
27AQI
25AQI
28AQI
22AQI
26AQI
26AQI
42AQI
48AQI
22AQI
22AQI
31AQI
25AQI
26AQI
27AQI
22AQI
28AQI
40AQI
53AQI
30AQI
17AQI
21AQI
20AQI
17AQI
22AQI
21AQI
20AQI
28AQI
21AQI
25AQI
30AQI
20AQI
51AQI
17AQI
15AQI
18AQI
21AQI
24AQI
18AQI
32AQI
21AQI
27AQI
15AQI
24AQI
51AQI
53AQI
53AQI
62AQI
50AQI
22AQI
20AQI
17AQI
42AQI
32AQI
19AQI
24AQI
16AQI
26AQI
29AQI
15AQI
15AQI
24AQI
23AQI
31AQI
16AQI
30AQI
30AQI
15AQI
16AQI
38AQI
22AQI
31AQI
23AQI
16AQI
33AQI
31AQI
31AQI
36AQI
38AQI
33AQI
40AQI
24AQI
15AQI
13AQI
13AQI
14AQI
14AQI
15AQI
15AQI
25AQI
39AQI
47AQI
30AQI
22AQI
28AQI
36AQI
44AQI
54AQI
53AQI
124AQI
93AQI
67AQI
55AQI
64AQI
62AQI
44AQI
76AQI
81AQI
108AQI
64AQI
37AQI
40AQI
47AQI
42AQI
47AQI
47AQI
43AQI
47AQI
48AQI
52AQI
46AQI
49AQI
24AQI
18AQI
39AQI
36AQI
34AQI
37AQI
38AQI
39AQI
50AQI
44AQI
54AQI
57AQI
38AQI
36AQI
33AQI
34AQI
149AQI
151AQI
96AQI
68AQI
31AQI
19AQI
22AQI
32AQI
29AQI
62AQI
60AQI
43AQI
30AQI
114AQI
64AQI
34AQI
29AQI
40AQI
94AQI
154AQI
162AQI
135AQI
88AQI
84AQI
71AQI
59AQI
55AQI
50AQI
45AQI
34AQI
72AQI
79AQI
65AQI
64AQI
53AQI
30AQI
29AQI
21AQI
37AQI
31AQI
29AQI
32AQI
23AQI
18AQI
19AQI
30AQI
35AQI
43AQI
33AQI
29AQI
38AQI
33AQI
31AQI
46AQI
30AQI
17AQI
18AQI
26AQI
39AQI
51AQI
47AQI
39AQI
48AQI
54AQI
56AQI
54AQI
54AQI
25AQI
29AQI
27AQI
28AQI
27AQI
55AQI
57AQI
51AQI
40AQI
No. of days
202538AQI
Highest AQI recorded in
July57AQI
Lowest AQI recorded in
January25AQI
202429AQI
Highest AQI recorded in
July38AQI
Lowest AQI recorded in
April18AQI
202340AQI
Highest AQI recorded in
June67AQI
Lowest AQI recorded in
October26AQI
202228AQI
Highest AQI recorded in
January34AQI
Lowest AQI recorded in
April21AQI
202131AQI
Highest AQI recorded in
July54AQI
Lowest AQI recorded in
May22AQI
202027AQI
Highest AQI recorded in
December37AQI
Lowest AQI recorded in
September21AQI
Most & Least Polluted Years Over the Last 6 Years
St Paul Harding HS.'s annual 2025 AQI (38) shows an average percentage change of 23.8% (worsened AQI) compared to previous years: 2020 (27), 2021 (31), 2022 (28), 2023 (40), 2024 (29).