The midges along the lake in Toronto are in full effect. They come out every spring for a few weeks and although they look like mosquitoes, they don't bite. They're completely harmless.
Last May, the midges in my neck of the woods were worse than ever. They appeared in larger numbers and stuck around until mid-June. I was biking in a balaclava in 20° because I grew tired of ingesting a pound of midge meat during waterfront rides. This year, the midges are far more tolerable.
But they're out there, annoying the mess out of walkers, jobbers and cyclists.