Vaasa Water Tower, Vaasa, Pohjanmaa, Finland 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
Vaasa Water Tower, Vaasa, Pohjanmaa, Finland
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 41 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Vaasa Water Tower, Vaasa, Pohjanmaa, Finland
7 AM4th Oct 2025
7 PM
6 AM5th Oct 2025
45AQI
36AQI
47AQI
39AQI
In the last 24 hours,
Vaasa Water Tower's AQI reached its highest point of 47 at 2 AM during the Night, while the lowest point, 36, was recorded at 7 AM during the Day between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Vaasa Water Tower, Vaasa, Pohjanmaa, Finland
17°C14/20°C
18°C15/21°C
16°C14/21°C
16°C13/18°C
15°C13/20°C
16°C13/20°C
18°C14/22°C
16°C14/17°C
14°C11/16°C
13°C11/17°C
13°C11/15°C
13°C12/16°C
12°C11/13°C
12°C10/14°C
11°C8/13°C
12°C9/14°C
13°C12/16°C
10°C8/13°C
9°C8/11°C
9°C7/10°C
11°C9/13°C
11°C10/12°C
12°C9/14°C
11°C8/14°C
9°C7/12°C
9°C6/11°C
9°C6/11°C
8°C5/12°C
9°C7/11°C
9°C7/11°C
--°C/°C
24AQI
22AQI
27AQI
23AQI
2025 Days Vs Air Quality
Vaasa Water Tower, Vaasa, Pohjanmaa, Finland
98%
271
2%
6
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 278 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Vaasa Water Tower, Vaasa, Pohjanmaa, Finland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI
25AQI
24AQI
22AQI
21AQI
21AQI
20AQI
23AQI
22AQI
24AQI
21AQI
23AQI
22AQI
20AQI
20AQI
20AQI
21AQI
22AQI
21AQI
32AQI
25AQI
26AQI
27AQI
24AQI
27AQI
24AQI
24AQI
22AQI
22AQI
20AQI
21AQI
20AQI
20AQI
22AQI
27AQI
24AQI
26AQI
23AQI
26AQI
28AQI
27AQI
25AQI
23AQI
22AQI
22AQI
23AQI
22AQI
24AQI
21AQI
31AQI
26AQI
30AQI
39AQI
54AQI
38AQI
34AQI
30AQI
29AQI
27AQI
25AQI
24AQI
23AQI
25AQI
23AQI
23AQI
26AQI
27AQI
42AQI
28AQI
41AQI
48AQI
51AQI
48AQI
29AQI
30AQI
20AQI
16AQI
20AQI
28AQI
40AQI
32AQI
30AQI
45AQI
34AQI
36AQI
31AQI
29AQI
38AQI
43AQI
43AQI
37AQI
38AQI
40AQI
29AQI
23AQI
22AQI
27AQI
35AQI
33AQI
21AQI
19AQI
18AQI
20AQI
27AQI
34AQI
38AQI
37AQI
27AQI
23AQI
18AQI
15AQI
19AQI
17AQI
16AQI
17AQI
15AQI
15AQI
22AQI
15AQI
18AQI
16AQI
16AQI
12AQI
14AQI
14AQI
14AQI
14AQI
15AQI
16AQI
18AQI
18AQI
22AQI
21AQI
17AQI
17AQI
19AQI
17AQI
18AQI
19AQI
18AQI
15AQI
17AQI
18AQI
15AQI
18AQI
19AQI
21AQI
20AQI
23AQI
21AQI
18AQI
12AQI
17AQI
21AQI
20AQI
26AQI
21AQI
18AQI
17AQI
19AQI
17AQI
20AQI
21AQI
18AQI
20AQI
23AQI
27AQI
25AQI
24AQI
19AQI
18AQI
16AQI
14AQI
17AQI
20AQI
19AQI
17AQI
21AQI
21AQI
20AQI
17AQI
16AQI
18AQI
16AQI
16AQI
17AQI
17AQI
18AQI
18AQI
17AQI
20AQI
22AQI
24AQI
29AQI
35AQI
38AQI
39AQI
32AQI
30AQI
35AQI
38AQI
42AQI
47AQI
52AQI
55AQI
55AQI
51AQI
43AQI
41AQI
41AQI
35AQI
43AQI
43AQI
40AQI
28AQI
30AQI
26AQI
21AQI
17AQI
19AQI
23AQI
21AQI
17AQI
16AQI
15AQI
19AQI
22AQI
13AQI
12AQI
13AQI
13AQI
11AQI
11AQI
12AQI
12AQI
12AQI
12AQI
12AQI
13AQI
14AQI
18AQI
16AQI
16AQI
18AQI
18AQI
18AQI
21AQI
24AQI
27AQI
34AQI
29AQI
35AQI
40AQI
43AQI
29AQI
22AQI
20AQI
21AQI
17AQI
17AQI
16AQI
15AQI
15AQI
16AQI
13AQI
11AQI
10AQI
13AQI
13AQI
15AQI
27AQI
20AQI
23AQI
29AQI
43AQI
40AQI
41AQI
23AQI
27AQI
32AQI
25AQI
17AQI
20AQI
32AQI
18AQI
21AQI
38AQI
No. of days
202524AQI
Highest AQI recorded in
October38AQI
Lowest AQI recorded in
May17AQI
202425AQI
Highest AQI recorded in
May39AQI
Lowest AQI recorded in
January16AQI
202312AQI
Highest AQI recorded in
December19AQI
Lowest AQI recorded in
March8AQI
202212AQI
Highest AQI recorded in
March18AQI
Lowest AQI recorded in
August6AQI
202114AQI
Highest AQI recorded in
January18AQI
Lowest AQI recorded in
April10AQI
202013AQI
Highest AQI recorded in
March25AQI
Lowest AQI recorded in
April6AQI
Most & Least Polluted Years Over the Last 6 Years
Vaasa Water Tower's annual 2025 AQI (24) shows an average percentage change of 70.3% (worsened AQI) compared to previous years: 2020 (13), 2021 (14), 2022 (12), 2023 (12), 2024 (25).