Huelva Seasonal Pollution
Huelva usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in April. The page uses OpenAQ-derived daily history for 8 mapped monitoring locations in Andalusia, Spain.
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Average EPA AQI
49
Rank 23 of 253 cities by average AQI
PM2.5
12.0
ug/m3 annualized city average
Seasonality
November
Cleanest: April
Health indicator
0.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Huelva
58
47
39
28
46
45
52
56
44
49
63
61
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Huelva, the current global analytics build covers 350 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.