Funchal Seasonal Pollution
Funchal usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in May. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Madeira, Portugal.
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Average EPA AQI
27
Rank 20 of 58 cities by average AQI
PM2.5
5.4
ug/m3 annualized city average
Seasonality
December
Cleanest: May
Health indicator
0.2
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Funchal
31
33
17
30
16
19
24
31
32
24
28
35
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Funchal, the current global analytics build covers 328 daily rows from 2024-01-01 to 2024-12-30. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.