Oñate Seasonal Pollution
Oñate usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in January. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Basque Country, Spain.
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Average EPA AQI
35
Rank 112 of 253 cities by average AQI
PM2.5
7.5
ug/m3 annualized city average
Seasonality
November
Cleanest: January
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Oñate
23
39
29
37
34
40
38
34
26
35
47
37
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Oñate, the current global analytics build covers 340 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.