Appleton, Wisconsin, 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
Appleton, Wisconsin, United States
AQI Trends: Highest and Lowest
Same Day Analysis (12th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 40 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Oct - 13th Oct 2025
Appleton, Wisconsin, United States
6 AM12th Oct 2025
6 PM
5 AM13th Oct 2025
41AQI
20AQI
54AQI
18AQI
In the last 24 hours,
Appleton's AQI reached its highest point of 54 at 10 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 12th Oct and 13th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Appleton, Wisconsin, United States
20°C16/28°C
20°C15/28°C
20°C13/30°C
20°C12/30°C
22°C15/30°C
19°C17/23°C
19°C15/23°C
18°C15/22°C
20°C16/25°C
18°C15/22°C
19°C15/23°C
17°C13/23°C
17°C13/25°C
17°C14/22°C
18°C11/30°C
17°C8/27°C
19°C10/30°C
20°C14/30°C
19°C15/27°C
20°C13/28°C
23°C15/32°C
24°C16/32°C
23°C17/29°C
17°C14/19°C
14°C9/21°C
9°C2/17°C
10°C3/20°C
14°C10/22°C
10°C5/16°C
15°C10/19°C
--°C/°C
36AQI
36AQI
41AQI
37AQI
2025 Days Vs Air Quality
Appleton, Wisconsin, United States
82%
234
16%
45
2%
5
0.3%
1
Total number of days with different AQI categories in last 286 days in 2025 (79 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2025, 82% of 286 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
Appleton, Wisconsin, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
24AQI
20AQI
18AQI
20AQI
19AQI
19AQI
24AQI
38AQI
63AQI
30AQI
41AQI
21AQI
23AQI
28AQI
32AQI
25AQI
21AQI
21AQI
22AQI
22AQI
25AQI
25AQI
25AQI
27AQI
22AQI
23AQI
23AQI
24AQI
28AQI
30AQI
24AQI
44AQI
32AQI
24AQI
25AQI
30AQI
27AQI
32AQI
27AQI
33AQI
31AQI
29AQI
26AQI
43AQI
39AQI
26AQI
26AQI
25AQI
24AQI
24AQI
31AQI
45AQI
69AQI
37AQI
26AQI
40AQI
32AQI
25AQI
29AQI
25AQI
40AQI
51AQI
26AQI
26AQI
27AQI
26AQI
27AQI
27AQI
27AQI
27AQI
40AQI
44AQI
71AQI
17AQI
23AQI
23AQI
21AQI
17AQI
23AQI
16AQI
20AQI
16AQI
20AQI
23AQI
34AQI
45AQI
16AQI
15AQI
16AQI
18AQI
26AQI
19AQI
18AQI
18AQI
21AQI
20AQI
17AQI
37AQI
47AQI
46AQI
54AQI
51AQI
35AQI
17AQI
17AQI
33AQI
52AQI
22AQI
19AQI
18AQI
21AQI
33AQI
22AQI
17AQI
16AQI
24AQI
35AQI
19AQI
18AQI
20AQI
18AQI
14AQI
22AQI
19AQI
23AQI
21AQI
15AQI
22AQI
24AQI
21AQI
33AQI
34AQI
36AQI
40AQI
29AQI
17AQI
15AQI
14AQI
15AQI
16AQI
13AQI
12AQI
16AQI
22AQI
25AQI
26AQI
25AQI
25AQI
38AQI
33AQI
34AQI
40AQI
63AQI
86AQI
80AQI
73AQI
67AQI
69AQI
62AQI
60AQI
77AQI
87AQI
43AQI
40AQI
35AQI
47AQI
42AQI
31AQI
30AQI
30AQI
37AQI
41AQI
52AQI
29AQI
36AQI
39AQI
25AQI
19AQI
24AQI
23AQI
30AQI
47AQI
41AQI
51AQI
56AQI
39AQI
50AQI
48AQI
38AQI
38AQI
36AQI
48AQI
101AQI
94AQI
71AQI
52AQI
22AQI
19AQI
25AQI
28AQI
56AQI
54AQI
59AQI
36AQI
51AQI
68AQI
37AQI
30AQI
37AQI
67AQI
152AQI
117AQI
131AQI
129AQI
120AQI
93AQI
88AQI
68AQI
55AQI
51AQI
29AQI
40AQI
42AQI
58AQI
64AQI
62AQI
39AQI
24AQI
17AQI
19AQI
17AQI
18AQI
27AQI
25AQI
17AQI
17AQI
24AQI
29AQI
28AQI
18AQI
25AQI
38AQI
36AQI
36AQI
36AQI
27AQI
28AQI
18AQI
20AQI
28AQI
26AQI
37AQI
37AQI
41AQI
52AQI
54AQI
53AQI
56AQI
52AQI
47AQI
29AQI
26AQI
33AQI
33AQI
23AQI
23AQI
21AQI
24AQI
35AQI
19AQI
28AQI
30AQI
31AQI
37AQI
53AQI
59AQI
57AQI
42AQI
27AQI
28AQI
41AQI
36AQI
36AQI
40AQI
26AQI
32AQI
28AQI
27AQI
23AQI
47AQI
51AQI
49AQI
34AQI
41AQI
No. of days
202535AQI
Highest AQI recorded in
July51AQI
Lowest AQI recorded in
May23AQI
202430AQI
Highest AQI recorded in
July34AQI
Lowest AQI recorded in
November23AQI
202341AQI
Highest AQI recorded in
June84AQI
Lowest AQI recorded in
October25AQI
202235AQI
Highest AQI recorded in
October37AQI
Lowest AQI recorded in
September29AQI
202138AQI
Highest AQI recorded in
July49AQI
Lowest AQI recorded in
September30AQI
202033AQI
Highest AQI recorded in
March41AQI
Lowest AQI recorded in
October26AQI
Most & Least Polluted Years Over the Last 6 Years
Appleton's annual 2025 AQI (35) shows an average percentage change of 2.04% (worsened AQI) compared to previous years: 2020 (33), 2021 (38), 2022 (35), 2023 (41), 2024 (30).