Leitza, Donostia, Basque Country, Spain 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
Leitza, Donostia, Basque Country, Spain
AQI Trends: Highest and Lowest
Same Day Analysis (30th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 38 of Good air quality on the same day.
Day & Night AQI Trend: 29th Sep - 30th Sep 2026
Leitza, Donostia, Basque Country, Spain
7 AM29th Sep 2026
8 PM
6 AM30th Sep 2026
40AQI
21AQI
42AQI
29AQI
In the last 24 hours,
Leitza's AQI reached its highest point of 42 at 10 PM during the Night, while the lowest point, 21, was recorded at 10 AM during the Day between 29th Sep and 30th Sep 2026.
Day & Night AQI Trend : Sep 2026
Leitza, Donostia, Basque Country, Spain
18°C14/22°C
19°C15/24°C
19°C13/28°C
22°C17/29°C
21°C16/28°C
25°C20/33°C
20°C17/25°C
19°C15/24°C
17°C14/20°C
16°C11/21°C
15°C11/22°C
17°C12/24°C
19°C13/27°C
21°C15/30°C
20°C18/24°C
17°C14/21°C
16°C14/19°C
15°C13/17°C
16°C11/23°C
17°C13/23°C
17°C13/24°C
17°C14/23°C
18°C13/25°C
22°C15/34°C
18°C15/22°C
18°C15/24°C
20°C15/28°C
21°C16/28°C
23°C17/30°C
21°C16/26°C
43AQI
33AQI
38AQI
35AQI
2026 Days Vs Air Quality
Leitza, Donostia, Basque Country, Spain
92%
249
8%
21
Total number of days with different AQI categories in last 273 days in 2026 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2026, 92% of 273 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
Leitza, Donostia, Basque Country, Spain
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
43AQI (US)
40AQI (US)
42AQI (US)
45AQI (US)
47AQI (US)
27AQI (US)
34AQI (US)
23AQI (US)
21AQI (US)
23AQI (US)
23AQI (US)
17AQI (US)
15AQI (US)
28AQI (US)
27AQI (US)
21AQI (US)
28AQI (US)
26AQI (US)
21AQI (US)
26AQI (US)
16AQI (US)
33AQI (US)
47AQI (US)
40AQI (US)
47AQI (US)
45AQI (US)
37AQI (US)
28AQI (US)
39AQI (US)
36AQI (US)
38AQI (US)
51AQI (US)
28AQI (US)
14AQI (US)
23AQI (US)
46AQI (US)
22AQI (US)
19AQI (US)
37AQI (US)
40AQI (US)
41AQI (US)
53AQI (US)
38AQI (US)
22AQI (US)
41AQI (US)
32AQI (US)
28AQI (US)
32AQI (US)
21AQI (US)
27AQI (US)
35AQI (US)
29AQI (US)
27AQI (US)
40AQI (US)
31AQI (US)
43AQI (US)
52AQI (US)
40AQI (US)
13AQI (US)
24AQI (US)
57AQI (US)
42AQI (US)
55AQI (US)
69AQI (US)
21AQI (US)
21AQI (US)
26AQI (US)
31AQI (US)
25AQI (US)
34AQI (US)
21AQI (US)
35AQI (US)
15AQI (US)
21AQI (US)
34AQI (US)
34AQI (US)
36AQI (US)
29AQI (US)
35AQI (US)
41AQI (US)
57AQI (US)
60AQI (US)
60AQI (US)
43AQI (US)
16AQI (US)
21AQI (US)
27AQI (US)
25AQI (US)
21AQI (US)
39AQI (US)
24AQI (US)
16AQI (US)
26AQI (US)
28AQI (US)
40AQI (US)
24AQI (US)
19AQI (US)
44AQI (US)
51AQI (US)
41AQI (US)
35AQI (US)
13AQI (US)
23AQI (US)
25AQI (US)
30AQI (US)
31AQI (US)
27AQI (US)
27AQI (US)
30AQI (US)
49AQI (US)
29AQI (US)
32AQI (US)
37AQI (US)
26AQI (US)
28AQI (US)
37AQI (US)
36AQI (US)
22AQI (US)
30AQI (US)
20AQI (US)
15AQI (US)
24AQI (US)
32AQI (US)
28AQI (US)
23AQI (US)
23AQI (US)
27AQI (US)
24AQI (US)
21AQI (US)
22AQI (US)
28AQI (US)
27AQI (US)
36AQI (US)
35AQI (US)
38AQI (US)
41AQI (US)
41AQI (US)
40AQI (US)
45AQI (US)
44AQI (US)
45AQI (US)
39AQI (US)
30AQI (US)
45AQI (US)
55AQI (US)
41AQI (US)
22AQI (US)
21AQI (US)
23AQI (US)
27AQI (US)
22AQI (US)
22AQI (US)
19AQI (US)
22AQI (US)
22AQI (US)
22AQI (US)
15AQI (US)
19AQI (US)
20AQI (US)
22AQI (US)
22AQI (US)
23AQI (US)
38AQI (US)
34AQI (US)
38AQI (US)
38AQI (US)
38AQI (US)
34AQI (US)
27AQI (US)
58AQI (US)
67AQI (US)
54AQI (US)
53AQI (US)
43AQI (US)
32AQI (US)
21AQI (US)
15AQI (US)
21AQI (US)
12AQI (US)
15AQI (US)
19AQI (US)
19AQI (US)
23AQI (US)
24AQI (US)
50AQI (US)
57AQI (US)
34AQI (US)
32AQI (US)
30AQI (US)
30AQI (US)
47AQI (US)
38AQI (US)
35AQI (US)
37AQI (US)
37AQI (US)
47AQI (US)
49AQI (US)
53AQI (US)
34AQI (US)
36AQI (US)
46AQI (US)
52AQI (US)
48AQI (US)
37AQI (US)
35AQI (US)
40AQI (US)
55AQI (US)
44AQI (US)
31AQI (US)
35AQI (US)
32AQI (US)
34AQI (US)
43AQI (US)
30AQI (US)
28AQI (US)
33AQI (US)
37AQI (US)
45AQI (US)
36AQI (US)
42AQI (US)
43AQI (US)
48AQI (US)
45AQI (US)
28AQI (US)
25AQI (US)
27AQI (US)
37AQI (US)
43AQI (US)
38AQI (US)
29AQI (US)
30AQI (US)
41AQI (US)
40AQI (US)
33AQI (US)
35AQI (US)
37AQI (US)
21AQI (US)
28AQI (US)
28AQI (US)
30AQI (US)
34AQI (US)
38AQI (US)
33AQI (US)
46AQI (US)
41AQI (US)
45AQI (US)
49AQI (US)
45AQI (US)
29AQI (US)
29AQI (US)
33AQI (US)
28AQI (US)
41AQI (US)
42AQI (US)
44AQI (US)
27AQI (US)
28AQI (US)
27AQI (US)
30AQI (US)
36AQI (US)
36AQI (US)
32AQI (US)
41AQI (US)
49AQI (US)
53AQI (US)
35AQI (US)
39AQI (US)
51AQI (US)
34AQI (US)
38AQI (US)
32AQI (US)
33AQI (US)
35AQI (US)
30AQI (US)
32AQI (US)
30AQI (US)
37AQI (US)
35AQI (US)
38AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
September38AQI (US)
Lowest AQI (US) recorded in
June30AQI (US)
202534AQI (US)
Highest AQI (US) recorded in
October49AQI (US)
Lowest AQI (US) recorded in
April24AQI (US)
202426AQI (US)
Highest AQI (US) recorded in
December34AQI (US)
Lowest AQI (US) recorded in
August20AQI (US)
202324AQI (US)
Highest AQI (US) recorded in
September30AQI (US)
Lowest AQI (US) recorded in
July20AQI (US)
202223AQI (US)
Highest AQI (US) recorded in
March29AQI (US)
Lowest AQI (US) recorded in
December18AQI (US)
202124AQI (US)
Highest AQI (US) recorded in
March34AQI (US)
Lowest AQI (US) recorded in
October18AQI (US)
202024AQI (US)
Highest AQI (US) recorded in
March30AQI (US)
Lowest AQI (US) recorded in
December22AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Leitza's annual 2026 AQI (US) (34) shows an average percentage change of 33.9% (worsened AQI (US)) compared to previous years: 2020 (24), 2021 (24), 2022 (23), 2023 (24), 2024 (26), 2025 (34).