Erandio Seasonal Pollution
Erandio usually records its highest OpenAQ-derived EPA AQI in July and its cleanest month in March. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Basque Country, Spain.
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Average EPA AQI
40
Rank 86 of 253 cities by average AQI
PM2.5
8.1
ug/m3 annualized city average
Seasonality
July
Cleanest: March
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Erandio
44
44
22
35
39
46
48
43
36
35
41
37
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Erandio, the current global analytics build covers 341 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.