Jaffna Seasonal Pollution
Jaffna usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in June. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in North Central, Sri Lanka.
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Average EPA AQI
66
Rank 1 of 3 cities by average AQI
PM2.5
17.5
ug/m3 annualized city average
Seasonality
December
Cleanest: June
Health indicator
0.8
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Jaffna
-
-
-
64
57
56
58
58
58
57
82
100
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Jaffna, the current global analytics build covers 250 daily rows from 2024-04-24 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.