We're heading into the sweatiest part of the year, but countries south of the equator are preparing for winter. In Brazil, this seasonal change is marked by the Festa Junina, a celebration of rural life. Families gather to perform the quadrilha, which is a square dance accompanied by Brazilian country music, and everybody dresses up in the stereotypical garb of rural Brazilians (red-checked dresses and shirts, pigtails for the women, straw hats and painted-on freckles are the hallmarks). Viva Brazil invites you to get in on the action at its Festa Junina from noon to 4:30 p.m. today at the Kirkwood Community Center (111 South Geyer Road, Kirkwood; www.vivabrasilstl.org). There will be folk music and dancing, traditional Brazilian food and drinks, and carnival games. Tickets are $5 or $15 for a family of up to five members.