Port Alberni Seasonal Pollution
Port Alberni usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in June. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in British Columbia, Canada.
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Average EPA AQI
29
Rank 87 of 158 cities by average AQI
PM2.5
5.7
ug/m3 annualized city average
Seasonality
January
Cleanest: June
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Port Alberni
49
40
36
24
15
13
17
19
18
32
39
45
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Port Alberni, the current global analytics build covers 358 daily rows from 2024-01-01 to 2025-01-01. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.