Otaniemi Keha I, Helsinki, Uusimaa, 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
Otaniemi Keha I, Helsinki, Uusimaa, Finland
AQI Trends: Highest and Lowest
Same Day Analysis (17th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 14 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Aug - 18th Aug 2025
Otaniemi Keha I, Helsinki, Uusimaa, Finland
5 AM17th Aug 2025
9 PM
4 AM18th Aug 2025
22AQI
10AQI
13AQI
11AQI
In the last 24 hours,
Otaniemi Keha I's AQI reached its highest point of 22 at 5 AM during the Day, while the lowest point, 10, was recorded at 1 PM during the Day between 17th Aug and 18th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Otaniemi Keha I, Helsinki, Uusimaa, Finland
19°C15/22°C
19°C15/23°C
20°C16/24°C
19°C17/22°C
20°C17/23°C
21°C17/25°C
21°C17/26°C
21°C17/25°C
20°C17/23°C
20°C17/23°C
20°C18/23°C
21°C17/25°C
21°C18/24°C
18°C17/21°C
18°C16/21°C
19°C16/22°C
20°C17/23°C
18°C16/20°C
16°C15/18°C
17°C14/20°C
17°C14/20°C
17°C13/21°C
17°C14/20°C
17°C12/21°C
16°C12/20°C
16°C11/21°C
18°C14/21°C
19°C16/22°C
15°C11/17°C
15°C10/20°C
--°C/°C
32AQI
31AQI
31AQI
31AQI
2025 Days Vs Air Quality
Otaniemi Keha I, Helsinki, Uusimaa, Finland
96%
219
4%
10
Total number of days with different AQI categories in last 230 days in 2025 (135 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 230 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
Otaniemi Keha I, Helsinki, Uusimaa, Finland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
23AQI
24AQI
24AQI
24AQI
24AQI
26AQI
29AQI
26AQI
26AQI
25AQI
24AQI
24AQI
24AQI
23AQI
24AQI
25AQI
27AQI
31AQI
30AQI
27AQI
27AQI
27AQI
27AQI
30AQI
31AQI
31AQI
35AQI
36AQI
31AQI
28AQI
25AQI
23AQI
25AQI
28AQI
30AQI
29AQI
31AQI
31AQI
34AQI
36AQI
32AQI
28AQI
25AQI
25AQI
23AQI
24AQI
30AQI
29AQI
30AQI
28AQI
28AQI
38AQI
49AQI
57AQI
64AQI
66AQI
58AQI
53AQI
44AQI
36AQI
29AQI
25AQI
24AQI
25AQI
26AQI
37AQI
35AQI
34AQI
29AQI
30AQI
27AQI
25AQI
22AQI
19AQI
21AQI
19AQI
20AQI
22AQI
25AQI
29AQI
35AQI
34AQI
44AQI
41AQI
38AQI
39AQI
45AQI
47AQI
47AQI
44AQI
40AQI
37AQI
31AQI
27AQI
25AQI
23AQI
21AQI
19AQI
17AQI
19AQI
18AQI
19AQI
27AQI
30AQI
30AQI
31AQI
32AQI
36AQI
28AQI
23AQI
21AQI
22AQI
19AQI
19AQI
17AQI
17AQI
19AQI
17AQI
18AQI
18AQI
17AQI
16AQI
16AQI
15AQI
16AQI
15AQI
16AQI
17AQI
17AQI
18AQI
19AQI
22AQI
18AQI
17AQI
18AQI
16AQI
17AQI
18AQI
18AQI
15AQI
20AQI
20AQI
18AQI
18AQI
19AQI
20AQI
21AQI
24AQI
27AQI
25AQI
20AQI
20AQI
21AQI
22AQI
25AQI
23AQI
20AQI
19AQI
21AQI
23AQI
29AQI
29AQI
28AQI
24AQI
25AQI
26AQI
32AQI
31AQI
26AQI
21AQI
20AQI
18AQI
20AQI
23AQI
21AQI
20AQI
18AQI
21AQI
21AQI
19AQI
17AQI
19AQI
17AQI
17AQI
18AQI
18AQI
20AQI
21AQI
21AQI
21AQI
22AQI
26AQI
31AQI
33AQI
48AQI
47AQI
38AQI
31AQI
30AQI
30AQI
36AQI
40AQI
47AQI
52AQI
54AQI
56AQI
51AQI
43AQI
43AQI
48AQI
52AQI
40AQI
28AQI
26AQI
28AQI
24AQI
22AQI
20AQI
19AQI
25AQI
22AQI
18AQI
16AQI
15AQI
18AQI
21AQI
16AQI
14AQI
27AQI
35AQI
31AQI
25AQI
18AQI
23AQI
34AQI
22AQI
No. of days
202527AQI
Highest AQI recorded in
February35AQI
Lowest AQI recorded in
May18AQI
202425AQI
Highest AQI recorded in
May39AQI
Lowest AQI recorded in
November18AQI
202325AQI
Highest AQI recorded in
December25AQI
Lowest AQI recorded in
November20AQI
202125AQI
Highest AQI recorded in
January25AQI
Lowest AQI recorded in
January25AQI
Most & Least Polluted Years Over the Last 4 Years
Otaniemi Keha I's annual 2025 AQI (27) shows an average percentage change of 8.3% (worsened AQI) compared to previous years: 2021 (25), 2023 (25), 2024 (25).