Cros, Santander, Cantabria, 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
Cros, Santander, Cantabria, Spain
AQI Trends: Highest and Lowest
Same Day Analysis (29th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 37 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 28th Sep - 29th Sep 2026
Cros, Santander, Cantabria, Spain
7 AM28th Sep 2026
8 PM
6 AM29th Sep 2026
56AQI
42AQI
55AQI
27AQI
In the last 24 hours,
Cros's AQI reached its highest point of 56 at 1 PM during the Day, while the lowest point, 27, was recorded at 1 AM during the Night between 28th Sep and 29th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Cros, Santander, Cantabria, Spain
19°C17/21°C
19°C16/21°C
20°C18/21°C
20°C17/22°C
21°C20/23°C
21°C19/23°C
22°C20/23°C
20°C19/22°C
19°C18/21°C
19°C17/19°C
17°C15/20°C
18°C16/21°C
18°C15/21°C
20°C17/23°C
21°C19/24°C
21°C20/22°C
19°C18/20°C
18°C16/20°C
18°C16/19°C
17°C15/20°C
18°C16/21°C
19°C16/22°C
19°C18/22°C
19°C17/21°C
21°C18/24°C
19°C18/20°C
19°C18/20°C
19°C17/21°C
19°C19/21°C
24°C20/27°C
40AQI
36AQI
38AQI
32AQI
2026 Days Vs Air Quality
Cros, Santander, Cantabria, Spain
91%
246
9%
23
Total number of days with different AQI categories in last 272 days in 2026 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2026, 91% of 272 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
Cros, Santander, Cantabria, Spain
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
38AQI (US)
47AQI (US)
34AQI (US)
31AQI (US)
39AQI (US)
27AQI (US)
30AQI (US)
24AQI (US)
21AQI (US)
24AQI (US)
26AQI (US)
14AQI (US)
18AQI (US)
20AQI (US)
26AQI (US)
29AQI (US)
31AQI (US)
24AQI (US)
27AQI (US)
25AQI (US)
17AQI (US)
36AQI (US)
54AQI (US)
34AQI (US)
40AQI (US)
43AQI (US)
36AQI (US)
37AQI (US)
40AQI (US)
52AQI (US)
42AQI (US)
38AQI (US)
42AQI (US)
43AQI (US)
43AQI (US)
44AQI (US)
35AQI (US)
41AQI (US)
41AQI (US)
42AQI (US)
23AQI (US)
20AQI (US)
43AQI (US)
16AQI (US)
31AQI (US)
22AQI (US)
20AQI (US)
29AQI (US)
23AQI (US)
27AQI (US)
27AQI (US)
25AQI (US)
42AQI (US)
60AQI (US)
28AQI (US)
45AQI (US)
54AQI (US)
52AQI (US)
13AQI (US)
29AQI (US)
53AQI (US)
39AQI (US)
52AQI (US)
67AQI (US)
9AQI (US)
12AQI (US)
30AQI (US)
20AQI (US)
15AQI (US)
30AQI (US)
31AQI (US)
34AQI (US)
15AQI (US)
15AQI (US)
18AQI (US)
28AQI (US)
30AQI (US)
31AQI (US)
26AQI (US)
34AQI (US)
69AQI (US)
61AQI (US)
52AQI (US)
36AQI (US)
14AQI (US)
16AQI (US)
20AQI (US)
19AQI (US)
19AQI (US)
32AQI (US)
21AQI (US)
12AQI (US)
25AQI (US)
29AQI (US)
34AQI (US)
28AQI (US)
26AQI (US)
37AQI (US)
45AQI (US)
57AQI (US)
34AQI (US)
14AQI (US)
12AQI (US)
17AQI (US)
24AQI (US)
22AQI (US)
18AQI (US)
21AQI (US)
41AQI (US)
52AQI (US)
26AQI (US)
22AQI (US)
21AQI (US)
42AQI (US)
42AQI (US)
49AQI (US)
44AQI (US)
27AQI (US)
37AQI (US)
26AQI (US)
23AQI (US)
19AQI (US)
18AQI (US)
25AQI (US)
30AQI (US)
13AQI (US)
15AQI (US)
18AQI (US)
21AQI (US)
12AQI (US)
14AQI (US)
20AQI (US)
36AQI (US)
36AQI (US)
38AQI (US)
39AQI (US)
40AQI (US)
39AQI (US)
46AQI (US)
44AQI (US)
42AQI (US)
38AQI (US)
29AQI (US)
41AQI (US)
58AQI (US)
56AQI (US)
41AQI (US)
28AQI (US)
18AQI (US)
17AQI (US)
11AQI (US)
13AQI (US)
13AQI (US)
19AQI (US)
21AQI (US)
19AQI (US)
10AQI (US)
9AQI (US)
19AQI (US)
19AQI (US)
18AQI (US)
34AQI (US)
59AQI (US)
27AQI (US)
30AQI (US)
38AQI (US)
48AQI (US)
56AQI (US)
51AQI (US)
43AQI (US)
43AQI (US)
52AQI (US)
44AQI (US)
32AQI (US)
53AQI (US)
19AQI (US)
18AQI (US)
16AQI (US)
10AQI (US)
11AQI (US)
15AQI (US)
13AQI (US)
28AQI (US)
34AQI (US)
52AQI (US)
65AQI (US)
48AQI (US)
48AQI (US)
43AQI (US)
39AQI (US)
41AQI (US)
37AQI (US)
33AQI (US)
29AQI (US)
28AQI (US)
30AQI (US)
36AQI (US)
47AQI (US)
31AQI (US)
33AQI (US)
41AQI (US)
67AQI (US)
38AQI (US)
28AQI (US)
30AQI (US)
32AQI (US)
44AQI (US)
38AQI (US)
28AQI (US)
29AQI (US)
32AQI (US)
39AQI (US)
38AQI (US)
34AQI (US)
29AQI (US)
31AQI (US)
38AQI (US)
37AQI (US)
34AQI (US)
41AQI (US)
35AQI (US)
46AQI (US)
46AQI (US)
33AQI (US)
30AQI (US)
29AQI (US)
36AQI (US)
45AQI (US)
36AQI (US)
33AQI (US)
30AQI (US)
34AQI (US)
41AQI (US)
33AQI (US)
35AQI (US)
33AQI (US)
26AQI (US)
31AQI (US)
28AQI (US)
31AQI (US)
27AQI (US)
33AQI (US)
37AQI (US)
39AQI (US)
42AQI (US)
39AQI (US)
40AQI (US)
40AQI (US)
35AQI (US)
31AQI (US)
36AQI (US)
31AQI (US)
33AQI (US)
38AQI (US)
35AQI (US)
35AQI (US)
32AQI (US)
30AQI (US)
32AQI (US)
36AQI (US)
33AQI (US)
37AQI (US)
40AQI (US)
39AQI (US)
43AQI (US)
34AQI (US)
36AQI (US)
48AQI (US)
37AQI (US)
32AQI (US)
35AQI (US)
31AQI (US)
30AQI (US)
31AQI (US)
29AQI (US)
35AQI (US)
35AQI (US)
36AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
September36AQI (US)
Lowest AQI (US) recorded in
June29AQI (US)
202537AQI (US)
Highest AQI (US) recorded in
October51AQI (US)
Lowest AQI (US) recorded in
September27AQI (US)
202426AQI (US)
Highest AQI (US) recorded in
December38AQI (US)
Lowest AQI (US) recorded in
January21AQI (US)
202323AQI (US)
Highest AQI (US) recorded in
February31AQI (US)
Lowest AQI (US) recorded in
November18AQI (US)
202225AQI (US)
Highest AQI (US) recorded in
March30AQI (US)
Lowest AQI (US) recorded in
December19AQI (US)
202125AQI (US)
Highest AQI (US) recorded in
February30AQI (US)
Lowest AQI (US) recorded in
January18AQI (US)
202029AQI (US)
Highest AQI (US) recorded in
November79AQI (US)
Lowest AQI (US) recorded in
December20AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Cros's annual 2026 AQI (US) (33) shows an average percentage change of 22.8% (worsened AQI (US)) compared to previous years: 2020 (29), 2021 (25), 2022 (25), 2023 (23), 2024 (26), 2025 (37).