Ponta Delgada Seasonal Pollution
Ponta Delgada usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in December. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Azores, Portugal.
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Average EPA AQI
38
Rank 12 of 58 cities by average AQI
PM2.5
7.4
ug/m3 annualized city average
Seasonality
November
Cleanest: December
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Ponta Delgada
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37
39
42
32
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Ponta Delgada, the current global analytics build covers 99 daily rows from 2024-09-19 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.