Zierbena, Portugalete, Basque Country, Spain 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
Zierbena, Portugalete, Basque Country, Spain
AQI Trends: Highest and Lowest
Same Day Analysis (17th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 27 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 17th Aug - 18th Aug 2026
Zierbena, Portugalete, Basque Country, Spain
7 AM17th Aug 2026
9 PM
6 AM18th Aug 2026
33AQI
21AQI
31AQI
21AQI
In the last 24 hours,
Zierbena's AQI reached its highest point of 33 at 6 PM during the Day, while the lowest point, 21, was recorded at 11 PM during the Night between 17th Aug and 18th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Zierbena, Portugalete, Basque Country, Spain
22°C18/27°C
21°C17/25°C
22°C17/27°C
22°C17/28°C
22°C17/27°C
20°C17/23°C
20°C17/24°C
20°C18/24°C
23°C15/30°C
23°C19/28°C
21°C18/25°C
21°C19/24°C
20°C19/23°C
21°C16/26°C
21°C18/26°C
21°C18/25°C
20°C18/22°C
21°C19/23°C
21°C17/25°C
22°C17/28°C
21°C18/25°C
22°C18/26°C
23°C18/28°C
24°C19/30°C
24°C20/29°C
23°C20/26°C
22°C20/25°C
22°C20/26°C
15°C5/25°C
22°C19/27°C
42AQI
37AQI
39AQI
38AQI
2026 Days Vs Air Quality
Zierbena, Portugalete, Basque Country, Spain
90%
204
10%
22
Total number of days with different AQI categories in last 230 days in 2026 (135 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% 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
Zierbena, Portugalete, Basque Country, Spain
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
36AQI (US)
26AQI (US)
19AQI (US)
19AQI (US)
23AQI (US)
19AQI (US)
18AQI (US)
11AQI (US)
19AQI (US)
17AQI (US)
20AQI (US)
9AQI (US)
14AQI (US)
16AQI (US)
18AQI (US)
14AQI (US)
33AQI (US)
12AQI (US)
13AQI (US)
18AQI (US)
12AQI (US)
28AQI (US)
43AQI (US)
25AQI (US)
33AQI (US)
24AQI (US)
21AQI (US)
14AQI (US)
24AQI (US)
47AQI (US)
30AQI (US)
27AQI (US)
14AQI (US)
23AQI (US)
24AQI (US)
24AQI (US)
22AQI (US)
33AQI (US)
37AQI (US)
27AQI (US)
24AQI (US)
18AQI (US)
41AQI (US)
15AQI (US)
32AQI (US)
19AQI (US)
14AQI (US)
29AQI (US)
19AQI (US)
23AQI (US)
27AQI (US)
29AQI (US)
47AQI (US)
59AQI (US)
23AQI (US)
42AQI (US)
58AQI (US)
51AQI (US)
14AQI (US)
28AQI (US)
45AQI (US)
39AQI (US)
59AQI (US)
65AQI (US)
12AQI (US)
12AQI (US)
31AQI (US)
23AQI (US)
12AQI (US)
25AQI (US)
33AQI (US)
34AQI (US)
15AQI (US)
15AQI (US)
18AQI (US)
28AQI (US)
34AQI (US)
32AQI (US)
30AQI (US)
40AQI (US)
67AQI (US)
58AQI (US)
55AQI (US)
32AQI (US)
15AQI (US)
16AQI (US)
18AQI (US)
18AQI (US)
17AQI (US)
27AQI (US)
21AQI (US)
12AQI (US)
24AQI (US)
28AQI (US)
32AQI (US)
25AQI (US)
24AQI (US)
42AQI (US)
45AQI (US)
58AQI (US)
30AQI (US)
15AQI (US)
13AQI (US)
15AQI (US)
24AQI (US)
19AQI (US)
17AQI (US)
23AQI (US)
46AQI (US)
51AQI (US)
31AQI (US)
25AQI (US)
18AQI (US)
37AQI (US)
41AQI (US)
50AQI (US)
39AQI (US)
26AQI (US)
34AQI (US)
23AQI (US)
22AQI (US)
14AQI (US)
19AQI (US)
24AQI (US)
33AQI (US)
14AQI (US)
19AQI (US)
17AQI (US)
20AQI (US)
10AQI (US)
15AQI (US)
20AQI (US)
36AQI (US)
36AQI (US)
38AQI (US)
39AQI (US)
41AQI (US)
39AQI (US)
46AQI (US)
43AQI (US)
43AQI (US)
38AQI (US)
29AQI (US)
49AQI (US)
66AQI (US)
48AQI (US)
25AQI (US)
14AQI (US)
17AQI (US)
12AQI (US)
13AQI (US)
13AQI (US)
14AQI (US)
18AQI (US)
19AQI (US)
15AQI (US)
9AQI (US)
11AQI (US)
17AQI (US)
16AQI (US)
19AQI (US)
46AQI (US)
50AQI (US)
30AQI (US)
39AQI (US)
40AQI (US)
46AQI (US)
41AQI (US)
32AQI (US)
52AQI (US)
64AQI (US)
70AQI (US)
56AQI (US)
42AQI (US)
30AQI (US)
14AQI (US)
11AQI (US)
14AQI (US)
10AQI (US)
14AQI (US)
14AQI (US)
14AQI (US)
34AQI (US)
41AQI (US)
53AQI (US)
56AQI (US)
40AQI (US)
38AQI (US)
35AQI (US)
45AQI (US)
42AQI (US)
28AQI (US)
31AQI (US)
29AQI (US)
32AQI (US)
38AQI (US)
45AQI (US)
51AQI (US)
34AQI (US)
40AQI (US)
50AQI (US)
71AQI (US)
37AQI (US)
26AQI (US)
28AQI (US)
37AQI (US)
54AQI (US)
41AQI (US)
26AQI (US)
35AQI (US)
32AQI (US)
39AQI (US)
39AQI (US)
35AQI (US)
30AQI (US)
34AQI (US)
39AQI (US)
51AQI (US)
30AQI (US)
44AQI (US)
49AQI (US)
53AQI (US)
40AQI (US)
31AQI (US)
33AQI (US)
27AQI (US)
22AQI (US)
29AQI (US)
31AQI (US)
30AQI (US)
30AQI (US)
29AQI (US)
37AQI (US)
38AQI (US)
No. of days
202630AQI (US)
Highest AQI (US) recorded in
August38AQI (US)
Lowest AQI (US) recorded in
January22AQI (US)
202535AQI (US)
Highest AQI (US) recorded in
October46AQI (US)
Lowest AQI (US) recorded in
November24AQI (US)
202418AQI (US)
Highest AQI (US) recorded in
December38AQI (US)
Lowest AQI (US) recorded in
March10AQI (US)
202314AQI (US)
Highest AQI (US) recorded in
September19AQI (US)
Lowest AQI (US) recorded in
December7AQI (US)
202235AQI (US)
Highest AQI (US) recorded in
July51AQI (US)
Lowest AQI (US) recorded in
December11AQI (US)
202140AQI (US)
Highest AQI (US) recorded in
October50AQI (US)
Lowest AQI (US) recorded in
January35AQI (US)
202036AQI (US)
Highest AQI (US) recorded in
March53AQI (US)
Lowest AQI (US) recorded in
December29AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Zierbena's annual 2026 AQI (US) (30) shows an average percentage change of 18.4% (worsened AQI (US)) compared to previous years: 2020 (36), 2021 (40), 2022 (35), 2023 (14), 2024 (18), 2025 (35).