Grado Seasonal Pollution
Grado usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in March. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Asturias, Spain.
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Average EPA AQI
20
Rank 184 of 253 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
January
Cleanest: March
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Grado
26
23
16
20
19
18
19
20
22
18
20
18
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Grado, the current global analytics build covers 309 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.