Leigh-on-Sea Seasonal Pollution
Leigh-on-Sea usually records its highest OpenAQ-derived EPA AQI in May and its cleanest month in December. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Southend-on-Sea, United Kingdom.
Search city analytics
Average EPA AQI
30
Rank 120 of 171 cities by average AQI
PM2.5
7.0
ug/m3 annualized city average
Seasonality
May
Cleanest: December
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Leigh-on-Sea
39
29
41
21
45
33
26
34
39
28
14
8
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Leigh-on-Sea, the current global analytics build covers 354 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.