Petite-Synthe Seasonal Pollution
Petite-Synthe usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in June. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Hauts-de-France, France.
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Average EPA AQI
15
Rank 214 of 272 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
August
Cleanest: June
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Petite-Synthe
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11
17
21
14
14
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14
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Petite-Synthe, the current global analytics build covers 84 daily rows from 2024-06-11 to 2024-12-16. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.