Espoo, Uusimaa, Finland Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Espoo, Uusimaa, Finland
AQI Trends: Highest and Lowest
Same Day Analysis (27th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 15 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Day & Night AQI Trend: 26th Sep - 27th Sep 2026
Espoo, Uusimaa, Finland
6 AM26th Sep 2026
7 PM
5 AM27th Sep 2026
14AQI
6AQI
21AQI
12AQI
In the last 24 hours,
Espoo's AQI reached its highest point of 21 at 12 AM during the Night, while the lowest point, 6, was recorded at 6 PM during the Day between 26th Sep and 27th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Espoo, Uusimaa, Finland
17°C14/20°C
16°C15/20°C
16°C13/18°C
16°C13/20°C
15°C11/21°C
14°C11/18°C
13°C10/18°C
13°C10/19°C
12°C9/16°C
12°C6/17°C
15°C14/17°C
15°C14/17°C
15°C11/18°C
13°C10/17°C
11°C8/15°C
13°C11/16°C
11°C6/16°C
11°C8/16°C
13°C12/14°C
14°C11/17°C
12°C10/15°C
14°C11/16°C
14°C11/16°C
12°C9/17°C
11°C8/14°C
10°C8/12°C
11°C8/15°C
12°C11/12°C
13°C11/14°C
12°C9/15°C
26AQI
18AQI
24AQI
21AQI
2026 Days Vs Air Quality
Espoo, Uusimaa, Finland
97%
258
3%
9
Total number of days with different AQI categories in last 270 days in 2026 (95 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 270 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
Espoo, Uusimaa, Finland
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI (US)
16AQI (US)
25AQI (US)
24AQI (US)
23AQI (US)
37AQI (US)
31AQI (US)
12AQI (US)
11AQI (US)
8AQI (US)
9AQI (US)
9AQI (US)
11AQI (US)
26AQI (US)
40AQI (US)
61AQI (US)
57AQI (US)
40AQI (US)
42AQI (US)
32AQI (US)
23AQI (US)
12AQI (US)
42AQI (US)
47AQI (US)
48AQI (US)
41AQI (US)
32AQI (US)
37AQI (US)
33AQI (US)
51AQI (US)
34AQI (US)
32AQI (US)
47AQI (US)
42AQI (US)
24AQI (US)
23AQI (US)
21AQI (US)
36AQI (US)
23AQI (US)
12AQI (US)
21AQI (US)
42AQI (US)
46AQI (US)
41AQI (US)
38AQI (US)
41AQI (US)
14AQI (US)
28AQI (US)
40AQI (US)
60AQI (US)
22AQI (US)
26AQI (US)
21AQI (US)
19AQI (US)
24AQI (US)
28AQI (US)
31AQI (US)
29AQI (US)
27AQI (US)
30AQI (US)
37AQI (US)
37AQI (US)
31AQI (US)
32AQI (US)
29AQI (US)
22AQI (US)
15AQI (US)
53AQI (US)
45AQI (US)
86AQI (US)
68AQI (US)
19AQI (US)
50AQI (US)
46AQI (US)
22AQI (US)
27AQI (US)
15AQI (US)
33AQI (US)
22AQI (US)
27AQI (US)
17AQI (US)
43AQI (US)
27AQI (US)
65AQI (US)
22AQI (US)
18AQI (US)
18AQI (US)
25AQI (US)
31AQI (US)
37AQI (US)
34AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
30AQI (US)
23AQI (US)
17AQI (US)
22AQI (US)
27AQI (US)
23AQI (US)
23AQI (US)
26AQI (US)
40AQI (US)
36AQI (US)
39AQI (US)
22AQI (US)
23AQI (US)
31AQI (US)
25AQI (US)
23AQI (US)
17AQI (US)
18AQI (US)
20AQI (US)
9AQI (US)
17AQI (US)
19AQI (US)
14AQI (US)
20AQI (US)
20AQI (US)
22AQI (US)
19AQI (US)
22AQI (US)
18AQI (US)
19AQI (US)
16AQI (US)
22AQI (US)
22AQI (US)
29AQI (US)
29AQI (US)
33AQI (US)
18AQI (US)
27AQI (US)
39AQI (US)
46AQI (US)
35AQI (US)
34AQI (US)
39AQI (US)
52AQI (US)
49AQI (US)
36AQI (US)
50AQI (US)
43AQI (US)
37AQI (US)
19AQI (US)
22AQI (US)
15AQI (US)
12AQI (US)
20AQI (US)
27AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
37AQI (US)
40AQI (US)
22AQI (US)
19AQI (US)
22AQI (US)
22AQI (US)
21AQI (US)
17AQI (US)
16AQI (US)
12AQI (US)
21AQI (US)
21AQI (US)
19AQI (US)
21AQI (US)
20AQI (US)
22AQI (US)
20AQI (US)
17AQI (US)
16AQI (US)
16AQI (US)
29AQI (US)
26AQI (US)
22AQI (US)
21AQI (US)
23AQI (US)
21AQI (US)
17AQI (US)
19AQI (US)
23AQI (US)
21AQI (US)
19AQI (US)
14AQI (US)
7AQI (US)
13AQI (US)
15AQI (US)
20AQI (US)
25AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
24AQI (US)
23AQI (US)
31AQI (US)
26AQI (US)
27AQI (US)
25AQI (US)
26AQI (US)
27AQI (US)
18AQI (US)
28AQI (US)
23AQI (US)
25AQI (US)
27AQI (US)
33AQI (US)
31AQI (US)
33AQI (US)
29AQI (US)
34AQI (US)
22AQI (US)
30AQI (US)
33AQI (US)
34AQI (US)
31AQI (US)
20AQI (US)
16AQI (US)
15AQI (US)
21AQI (US)
18AQI (US)
17AQI (US)
13AQI (US)
20AQI (US)
24AQI (US)
22AQI (US)
17AQI (US)
6AQI (US)
10AQI (US)
19AQI (US)
19AQI (US)
22AQI (US)
17AQI (US)
40AQI (US)
31AQI (US)
27AQI (US)
25AQI (US)
28AQI (US)
24AQI (US)
22AQI (US)
23AQI (US)
23AQI (US)
24AQI (US)
20AQI (US)
26AQI (US)
24AQI (US)
17AQI (US)
23AQI (US)
22AQI (US)
24AQI (US)
15AQI (US)
12AQI (US)
18AQI (US)
22AQI (US)
19AQI (US)
24AQI (US)
25AQI (US)
26AQI (US)
24AQI (US)
23AQI (US)
27AQI (US)
30AQI (US)
24AQI (US)
16AQI (US)
22AQI (US)
17AQI (US)
12AQI (US)
15AQI (US)
30AQI (US)
31AQI (US)
34AQI (US)
24AQI (US)
29AQI (US)
22AQI (US)
23AQI (US)
23AQI (US)
21AQI (US)
No. of days
202626AQI (US)
Highest AQI (US) recorded in
March34AQI (US)
Lowest AQI (US) recorded in
September21AQI (US)
202523AQI (US)
Highest AQI (US) recorded in
February33AQI (US)
Lowest AQI (US) recorded in
May16AQI (US)
202426AQI (US)
Highest AQI (US) recorded in
May35AQI (US)
Lowest AQI (US) recorded in
November19AQI (US)
202326AQI (US)
Highest AQI (US) recorded in
May32AQI (US)
Lowest AQI (US) recorded in
October19AQI (US)
202225AQI (US)
Highest AQI (US) recorded in
March33AQI (US)
Lowest AQI (US) recorded in
September14AQI (US)
202127AQI (US)
Highest AQI (US) recorded in
June35AQI (US)
Lowest AQI (US) recorded in
December20AQI (US)
202027AQI (US)
Highest AQI (US) recorded in
March38AQI (US)
Lowest AQI (US) recorded in
November23AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Espoo's annual 2026 AQI (US) (26) shows an average percentage change of 1.6% (worsened AQI (US)) compared to previous years: 2020 (27), 2021 (27), 2022 (25), 2023 (26), 2024 (26), 2025 (23).