Harjavalta, Satakunta, Finland Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Harjavalta, Satakunta, Finland
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 24 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Harjavalta, Satakunta, Finland
4 AM3rd Aug 2025
10 PM
3 AM4th Aug 2025
27AQI
21AQI
27AQI
23AQI
In the last 24 hours,
Harjavalta's AQI reached its highest point of 27 at 10 PM during the Day, while the lowest point, 21, was recorded at 1 PM during the Day between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Harjavalta, Satakunta, Finland
13°C9/18°C
13°C11/15°C
14°C11/16°C
14°C11/18°C
15°C10/20°C
17°C11/22°C
18°C12/23°C
22°C15/29°C
19°C17/25°C
21°C17/29°C
21°C16/26°C
24°C19/29°C
23°C16/29°C
21°C16/26°C
21°C15/26°C
22°C16/27°C
22°C16/29°C
20°C17/27°C
22°C18/28°C
22°C17/26°C
21°C17/25°C
20°C16/24°C
20°C16/24°C
20°C16/24°C
20°C18/23°C
20°C16/24°C
21°C17/28°C
20°C16/27°C
18°C14/21°C
18°C14/23°C
--°C/°C
37AQI
35AQI
36AQI
36AQI
2025 Days Vs Air Quality
Harjavalta, Satakunta, Finland
97%
208
3%
7
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 216 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
Harjavalta, Satakunta, Finland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
24AQI
24AQI
22AQI
21AQI
21AQI
22AQI
24AQI
22AQI
23AQI
20AQI
28AQI
21AQI
22AQI
21AQI
20AQI
21AQI
24AQI
23AQI
21AQI
21AQI
23AQI
24AQI
24AQI
28AQI
25AQI
23AQI
21AQI
22AQI
20AQI
21AQI
20AQI
21AQI
21AQI
26AQI
27AQI
29AQI
23AQI
31AQI
32AQI
35AQI
29AQI
22AQI
21AQI
21AQI
20AQI
21AQI
22AQI
20AQI
33AQI
25AQI
42AQI
50AQI
78AQI
38AQI
41AQI
27AQI
26AQI
27AQI
26AQI
24AQI
22AQI
24AQI
22AQI
22AQI
25AQI
33AQI
26AQI
26AQI
24AQI
25AQI
22AQI
30AQI
21AQI
17AQI
16AQI
15AQI
19AQI
22AQI
23AQI
27AQI
28AQI
41AQI
41AQI
27AQI
24AQI
28AQI
61AQI
44AQI
34AQI
26AQI
23AQI
22AQI
23AQI
14AQI
16AQI
15AQI
20AQI
13AQI
16AQI
16AQI
17AQI
16AQI
29AQI
20AQI
25AQI
32AQI
22AQI
19AQI
14AQI
14AQI
15AQI
14AQI
13AQI
15AQI
13AQI
12AQI
20AQI
15AQI
14AQI
14AQI
17AQI
12AQI
14AQI
14AQI
13AQI
14AQI
15AQI
15AQI
16AQI
17AQI
22AQI
19AQI
17AQI
17AQI
17AQI
20AQI
18AQI
21AQI
17AQI
14AQI
19AQI
17AQI
13AQI
15AQI
19AQI
21AQI
19AQI
31AQI
25AQI
15AQI
12AQI
17AQI
16AQI
22AQI
28AQI
21AQI
17AQI
15AQI
18AQI
16AQI
36AQI
27AQI
19AQI
19AQI
23AQI
32AQI
31AQI
28AQI
20AQI
17AQI
15AQI
12AQI
17AQI
21AQI
21AQI
18AQI
22AQI
22AQI
21AQI
17AQI
16AQI
19AQI
17AQI
16AQI
16AQI
16AQI
21AQI
18AQI
18AQI
21AQI
21AQI
27AQI
48AQI
58AQI
58AQI
53AQI
30AQI
30AQI
32AQI
38AQI
36AQI
44AQI
48AQI
54AQI
59AQI
41AQI
38AQI
38AQI
40AQI
31AQI
44AQI
38AQI
27AQI
24AQI
23AQI
30AQI
27AQI
18AQI
17AQI
21AQI
34AQI
30AQI
No. of days
202524AQI
Highest AQI recorded in
July34AQI
Lowest AQI recorded in
May17AQI
202420AQI
Highest AQI recorded in
May28AQI
Lowest AQI recorded in
April15AQI
202318AQI
Highest AQI recorded in
June25AQI
Lowest AQI recorded in
October11AQI
202216AQI
Highest AQI recorded in
June25AQI
Lowest AQI recorded in
August4AQI
202114AQI
Highest AQI recorded in
June22AQI
Lowest AQI recorded in
January7AQI
202013AQI
Highest AQI recorded in
June28AQI
Lowest AQI recorded in
November7AQI
Most & Least Polluted Years Over the Last 6 Years
Harjavalta's annual 2025 AQI (24) shows an average percentage change of 52.4% (worsened AQI) compared to previous years: 2020 (13), 2021 (14), 2022 (16), 2023 (18), 2024 (20).