Casco Viejo, Altzaga, Pais Vasco, 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
Casco Viejo, Altzaga, Pais Vasco, Spain
AQI Trends: Highest and Lowest
Same Day Analysis (7th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 34 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Casco Viejo, Altzaga, Pais Vasco, Spain
6 AM7th Aug 2025
9 PM
5 AM8th Aug 2025
44AQI
33AQI
42AQI
31AQI
In the last 24 hours,
Casco Viejo's AQI reached its highest point of 44 at 1 PM during the Day, while the lowest point, 31, was recorded at 4 AM during the Night between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Casco Viejo, Altzaga, Pais Vasco, Spain
19°C15/24°C
22°C16/27°C
22°C18/27°C
21°C17/25°C
20°C17/24°C
20°C18/22°C
20°C17/24°C
21°C17/27°C
21°C18/26°C
20°C18/22°C
20°C18/23°C
19°C17/21°C
19°C16/23°C
20°C15/25°C
19°C16/22°C
18°C16/21°C
18°C16/22°C
19°C15/22°C
19°C15/23°C
19°C17/21°C
19°C16/22°C
20°C17/22°C
19°C17/23°C
20°C17/23°C
20°C17/23°C
20°C16/24°C
22°C16/29°C
20°C17/24°C
21°C18/26°C
22°C18/27°C
--°C/°C
35AQI
35AQI
34AQI
34AQI
2025 Days Vs Air Quality
Casco Viejo, Altzaga, Pais Vasco, Spain
61%
43
39%
28
Total number of days with different AQI categories in last 220 days in 2025 (145 days remaining)
Under WHO’s Safe Air Quality Limits: 61%
Health Risk Level:
Moderate
In 2025, 61% of 220 days were within WHO’s safe air quality limits, and 39% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Casco Viejo, Altzaga, Pais Vasco, Spain
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
52AQI
51AQI
50AQI
45AQI
47AQI
55AQI
52AQI
44AQI
43AQI
40AQI
53AQI
63AQI
66AQI
66AQI
64AQI
68AQI
60AQI
52AQI
49AQI
52AQI
54AQI
56AQI
57AQI
58AQI
60AQI
57AQI
57AQI
56AQI
54AQI
51AQI
52AQI
51AQI
52AQI
52AQI
47AQI
48AQI
46AQI
45AQI
41AQI
39AQI
38AQI
37AQI
40AQI
46AQI
50AQI
51AQI
47AQI
38AQI
43AQI
50AQI
42AQI
30AQI
28AQI
25AQI
24AQI
22AQI
20AQI
33AQI
46AQI
48AQI
35AQI
28AQI
24AQI
22AQI
25AQI
25AQI
27AQI
31AQI
36AQI
30AQI
34AQI
51AQI
54AQI
38AQI
30AQI
No. of days
202545AQI
Highest AQI recorded in
June54AQI
Lowest AQI recorded in
August30AQI
Most & Least Polluted Years Over the Last 1 Years
Casco Viejo's annual 2025 AQI (45) shows an average percentage change of NaN% (improved AQI) compared to previous years: .