Santo André Seasonal Pollution
Santo André usually records its highest OpenAQ-derived EPA AQI in February and its cleanest month in April. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Setúbal, Portugal.
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Average EPA AQI
46
Rank 8 of 58 cities by average AQI
PM2.5
9.5
ug/m3 annualized city average
Seasonality
February
Cleanest: April
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Santo André
51
57
49
29
36
47
41
49
52
38
45
49
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Santo André, the current global analytics build covers 265 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.