Currently our AQI is a mere 87, for fine particulates (PM 2.5). That’s a relief. Just a normal amount of air pollution.
Or is it? I’ve kind of lost track of what was normal for my area. It’s not like I paid attention to the AQI for most of the past decade.
So here, for Fairfax County, VA, I’m posting a table of AQI statistics, for PM 2.5. based on the period 2010-2022. Just so that I can refer to it as needed. Briefly, only 1% of days exceed the 99th percentile. Half of days exceed the 50th percentile. And so on. Continue reading Post #1803: What’s normal for PM 2.5 in my area?