Galdácano Seasonal Pollution
Galdácano usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in March. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Basque Country, Spain.
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Average EPA AQI
41
Rank 82 of 253 cities by average AQI
PM2.5
8.2
ug/m3 annualized city average
Seasonality
January
Cleanest: March
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Galdácano
47
46
26
35
37
43
41
43
45
37
46
38
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Galdácano, the current global analytics build covers 313 daily rows from 2024-01-01 to 2024-12-31. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.