Helsinki, Uusimaa, Finland Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Helsinki, Uusimaa, Finland
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 18 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Helsinki, Uusimaa, Finland
3 AM2nd Jul 2025
10 PM
2 AM3rd Jul 2025
23AQI
17AQI
17AQI
16AQI
In the last 24 hours,
Helsinki's AQI reached its highest point of 23 at 9 AM during the Day, while the lowest point, 16, was recorded at 3 AM during the Night between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Helsinki, Uusimaa, Finland
13°C9/16°C
13°C8/16°C
13°C10/16°C
13°C8/16°C
13°C11/15°C
13°C10/16°C
12°C10/15°C
13°C9/16°C
11°C10/12°C
12°C11/15°C
15°C11/18°C
15°C10/18°C
17°C11/21°C
16°C12/20°C
15°C12/19°C
14°C11/17°C
13°C11/14°C
14°C10/18°C
12°C9/14°C
13°C10/17°C
13°C10/16°C
13°C11/14°C
14°C11/16°C
14°C9/19°C
14°C11/17°C
14°C12/16°C
14°C12/17°C
15°C11/19°C
18°C12/23°C
18°C13/22°C
0°C0/0°C
22AQI
22AQI
22AQI
22AQI
2025 Days Vs Air Quality
Helsinki, Uusimaa, Finland
95%
174
5%
9
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 184 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
Helsinki, Uusimaa, Finland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI
23AQI
23AQI
22AQI
22AQI
25AQI
26AQI
33AQI
23AQI
26AQI
22AQI
23AQI
23AQI
24AQI
22AQI
22AQI
24AQI
27AQI
26AQI
27AQI
26AQI
27AQI
27AQI
27AQI
32AQI
30AQI
32AQI
39AQI
42AQI
28AQI
25AQI
23AQI
21AQI
28AQI
32AQI
33AQI
33AQI
35AQI
34AQI
43AQI
41AQI
31AQI
26AQI
24AQI
26AQI
28AQI
31AQI
30AQI
28AQI
29AQI
29AQI
32AQI
49AQI
56AQI
73AQI
81AQI
79AQI
52AQI
48AQI
37AQI
30AQI
26AQI
26AQI
24AQI
25AQI
27AQI
46AQI
34AQI
35AQI
33AQI
33AQI
28AQI
25AQI
20AQI
20AQI
22AQI
19AQI
21AQI
25AQI
31AQI
32AQI
31AQI
38AQI
54AQI
45AQI
35AQI
41AQI
52AQI
52AQI
52AQI
46AQI
36AQI
33AQI
29AQI
24AQI
22AQI
22AQI
22AQI
20AQI
18AQI
19AQI
20AQI
20AQI
31AQI
34AQI
30AQI
31AQI
33AQI
41AQI
22AQI
19AQI
20AQI
22AQI
18AQI
20AQI
17AQI
18AQI
21AQI
18AQI
20AQI
18AQI
18AQI
15AQI
15AQI
15AQI
15AQI
16AQI
16AQI
19AQI
19AQI
19AQI
20AQI
26AQI
19AQI
18AQI
20AQI
17AQI
20AQI
21AQI
20AQI
15AQI
25AQI
22AQI
18AQI
17AQI
22AQI
22AQI
24AQI
27AQI
30AQI
21AQI
17AQI
21AQI
23AQI
24AQI
29AQI
26AQI
21AQI
19AQI
21AQI
21AQI
28AQI
35AQI
27AQI
23AQI
22AQI
26AQI
33AQI
29AQI
23AQI
20AQI
19AQI
17AQI
21AQI
22AQI
19AQI
17AQI
19AQI
20AQI
19AQI
17AQI
17AQI
18AQI
27AQI
38AQI
33AQI
25AQI
20AQI
23AQI
18AQI
No. of days
202527AQI
Highest AQI recorded in
February38AQI
Lowest AQI recorded in
July18AQI
202429AQI
Highest AQI recorded in
May38AQI
Lowest AQI recorded in
October21AQI
202329AQI
Highest AQI recorded in
April41AQI
Lowest AQI recorded in
October20AQI
202230AQI
Highest AQI recorded in
March41AQI
Lowest AQI recorded in
August20AQI
202131AQI
Highest AQI recorded in
June40AQI
Lowest AQI recorded in
September25AQI
202028AQI
Highest AQI recorded in
June34AQI
Lowest AQI recorded in
November24AQI
Most & Least Polluted Years Over the Last 6 Years
Helsinki's annual 2025 AQI (27) shows an average percentage change of -7.1% (improved AQI) compared to previous years: 2020 (28), 2021 (31), 2022 (30), 2023 (29), 2024 (29).