Guimarães Seasonal Pollution
Guimarães 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 Braga, Portugal.
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Average EPA AQI
20
Rank 35 of 58 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
February
Cleanest: April
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Guimarães
28
30
14
14
15
17
17
18
22
15
19
25
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Guimarães, the current global analytics build covers 293 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.