Fair weather always seems to play hard-to-get on weekends. During the work week, we toil under life-sucking fluorescent tubes, teased by the orgy of gorgeous solar photons just beyond the windows. But when the weekend arrives, too often it seems to bring gray, drooling skies with it.

Well, it’s not our imaginations, it seems… a 1998 study shows that it is significantly more likely to rain on a weekend than a weekday. To make matters worse, it’s appears to be OUR fault, because we insist on continuing to operate these internal-combustion monstrosities. Stupid climate karma.

From the article:

An analysis of Eastern Seaboard weather shows it really does rain more frequently on the weekend than during the week. Saturdays receive an average of 22% more precipitation than Mondays, climatologists at Arizona State University report.What’s more, the clouds are, to some extent, the product of the very jobs people are trying to escape.

The ASU researchers, who analyzed weather data dating back to 1946, say weekend storms probably are enhanced by air pollution spewed by millions of cars and trucks during weekday commutes.

The pollution generates tons of tiny airborne particles, called aerosols, that become the microscopic seeds around which rain drops develop.