Mérida Seasonal Pollution
Mérida usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in March. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Extremadura, Spain.
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Average EPA AQI
15
Rank 216 of 253 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
August
Cleanest: March
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Mérida
11
13
11
15
13
16
16
20
19
12
17
16
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Mérida, the current global analytics build covers 322 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.