Water Tower, Waterloo, Iowa, 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
Water Tower, Waterloo, Iowa, United States
AQI Trends: Highest and Lowest
Same Day Analysis (17th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 58 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Oct - 18th Oct 2025
Water Tower, Waterloo, Iowa, United States
7 AM17th Oct 2025
6 PM
6 AM18th Oct 2025
66AQI
53AQI
69AQI
44AQI
In the last 24 hours,
Water Tower's AQI reached its highest point of 69 at 7 PM during the Night, while the lowest point, 44, was recorded at 5 AM during the Night between 17th Oct and 18th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Water Tower, Waterloo, Iowa, United States
22°C16/30°C
20°C18/24°C
19°C14/23°C
19°C15/27°C
20°C16/28°C
19°C14/26°C
18°C13/24°C
18°C9/28°C
21°C12/33°C
22°C14/32°C
19°C8/30°C
23°C13/33°C
22°C12/33°C
22°C16/30°C
22°C13/32°C
24°C16/34°C
24°C17/33°C
23°C16/31°C
15°C12/15°C
15°C8/23°C
12°C4/22°C
13°C4/24°C
18°C12/27°C
14°C5/24°C
18°C10/27°C
18°C13/25°C
13°C8/19°C
14°C13/17°C
17°C12/23°C
21°C17/28°C
--°C/°C
38AQI
38AQI
47AQI
38AQI
2025 Days Vs Air Quality
Water Tower, Waterloo, Iowa, United States
82%
238
17%
50
0.6%
2
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2025, 82% of 291 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
Water Tower, Waterloo, Iowa, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
33AQI
27AQI
22AQI
21AQI
23AQI
32AQI
36AQI
54AQI
39AQI
30AQI
39AQI
23AQI
32AQI
33AQI
29AQI
30AQI
21AQI
23AQI
26AQI
24AQI
28AQI
33AQI
42AQI
33AQI
25AQI
25AQI
29AQI
27AQI
40AQI
40AQI
25AQI
41AQI
42AQI
25AQI
29AQI
33AQI
26AQI
32AQI
31AQI
37AQI
35AQI
35AQI
43AQI
43AQI
46AQI
29AQI
29AQI
27AQI
29AQI
31AQI
48AQI
52AQI
60AQI
36AQI
27AQI
31AQI
30AQI
25AQI
28AQI
33AQI
50AQI
40AQI
26AQI
26AQI
29AQI
28AQI
27AQI
30AQI
29AQI
31AQI
57AQI
51AQI
47AQI
26AQI
26AQI
33AQI
27AQI
27AQI
27AQI
27AQI
27AQI
25AQI
29AQI
34AQI
37AQI
46AQI
39AQI
25AQI
24AQI
35AQI
30AQI
23AQI
34AQI
35AQI
33AQI
29AQI
28AQI
42AQI
50AQI
54AQI
56AQI
50AQI
32AQI
27AQI
43AQI
48AQI
49AQI
30AQI
41AQI
23AQI
36AQI
38AQI
33AQI
24AQI
23AQI
28AQI
38AQI
26AQI
35AQI
29AQI
24AQI
19AQI
33AQI
27AQI
35AQI
40AQI
24AQI
36AQI
42AQI
33AQI
42AQI
42AQI
39AQI
43AQI
32AQI
20AQI
20AQI
22AQI
21AQI
18AQI
20AQI
27AQI
25AQI
26AQI
33AQI
27AQI
32AQI
32AQI
42AQI
42AQI
52AQI
54AQI
55AQI
78AQI
66AQI
67AQI
69AQI
77AQI
68AQI
65AQI
65AQI
71AQI
66AQI
59AQI
48AQI
51AQI
32AQI
23AQI
29AQI
34AQI
43AQI
45AQI
53AQI
25AQI
29AQI
29AQI
19AQI
30AQI
31AQI
24AQI
39AQI
47AQI
44AQI
47AQI
52AQI
37AQI
53AQI
50AQI
34AQI
32AQI
26AQI
45AQI
58AQI
69AQI
62AQI
34AQI
21AQI
26AQI
22AQI
18AQI
48AQI
49AQI
42AQI
25AQI
23AQI
31AQI
22AQI
23AQI
37AQI
43AQI
106AQI
101AQI
96AQI
87AQI
78AQI
60AQI
61AQI
54AQI
47AQI
46AQI
35AQI
35AQI
36AQI
53AQI
54AQI
51AQI
36AQI
26AQI
16AQI
19AQI
22AQI
19AQI
27AQI
25AQI
22AQI
21AQI
26AQI
33AQI
32AQI
33AQI
35AQI
37AQI
41AQI
41AQI
47AQI
55AQI
35AQI
22AQI
33AQI
36AQI
37AQI
48AQI
48AQI
54AQI
53AQI
56AQI
53AQI
49AQI
40AQI
37AQI
32AQI
26AQI
28AQI
27AQI
25AQI
24AQI
29AQI
33AQI
30AQI
32AQI
37AQI
48AQI
54AQI
55AQI
63AQI
61AQI
51AQI
50AQI
30AQI
38AQI
44AQI
44AQI
40AQI
41AQI
52AQI
38AQI
42AQI
52AQI
58AQI
31AQI
35AQI
33AQI
36AQI
31AQI
49AQI
41AQI
43AQI
39AQI
48AQI
No. of days
202538AQI
Highest AQI recorded in
June49AQI
Lowest AQI recorded in
January31AQI
202432AQI
Highest AQI recorded in
October40AQI
Lowest AQI recorded in
April23AQI
202341AQI
Highest AQI recorded in
June69AQI
Lowest AQI recorded in
February32AQI
202231AQI
Highest AQI recorded in
October42AQI
Lowest AQI recorded in
April19AQI
202134AQI
Highest AQI recorded in
February48AQI
Lowest AQI recorded in
June25AQI
202029AQI
Highest AQI recorded in
April38AQI
Lowest AQI recorded in
May22AQI
Most & Least Polluted Years Over the Last 6 Years
Water Tower's annual 2025 AQI (38) shows an average percentage change of 14.9% (worsened AQI) compared to previous years: 2020 (29), 2021 (34), 2022 (31), 2023 (41), 2024 (32).