The beginning of the weekend in Houston is will be one filled with tremendos sunshine. According to Houston area forecasters on Friday, there will be plenty of sunshine with an ozone watch in effect. Forecasters warn there is the possibility of unhealthy amounts of ground level ozone that could develop. The ozone is a lung irritant that affects many children elderly residents. Temperatures for Friday are expected to climb into the mid-80s. The seven-day forecast shows sunshine and warm temperatures thorough the holiday on Sunday. Lows are expected to average the lower 60s and highs in the lower 80s.