I remembered I needed to refuel my SUV today……..
Was thinking last night, as the temperature dropped a good 20 degrees in the late evening, and the humidity seemed to be blown away by a noticeable breeze. Was thinking – hoping – that today would be sunny, but dry and breezy. Well, it is sunny!
I remembered I needed to fuel my SUV today (Don’t get too concerned – it’s a 4 cyl w/ 23mpg city/29mpg highway). But I remembered that I should wait, on a day that is hot and humid, with not a lot of air movement, I should wait until after dusk to do so. And this is why, summed up nicely by Beth Gorman from the Department of Environmental Quality, as posted on www.MrsGreensWorld.com
“There is an air pollutant called ‘ground-level ozone’ (as opposed to the ozone layer above us that protects us from the sun’s radiation). Ground-level ozone is created when gasoline fumes, car exhaust, and other pollutants that are floating around in our air ‘bake’ together in the presence of intense summer heat and sunlight. The technical term for this is called a ‘photochemical reaction.’ If we refuel while the sun is up during the hot summer months, we release gasoline fumes that can react with the sunlight and other pollutants to form ‘ozone.’ When we refuel after the sun has set, the gasoline fumes that are released into the air will not have the intense sunlight available to begin that photochemical reaction, so our ozone levels will be lower.”
So, I will venture out this evening, hoping again for lower temps, and a cool, dry breeze……………and refuel my SUV.