Look at tourism and recreation workers. Visitors to Maryland, most of them on one-and-two-day trips, support 135,000 full-time-equivalent tourism jobs paying $3.8 billion in wages and salaries. By 2050, days hotter than 90 degrees Fahrenheit will triple to 90 days a year. Between 25 and 35 days will be above 100 degrees. If visitors canceled half of their trips on days over 100 degrees, it would lead to loss of one-sixth of tourism revenues, or approximately 22,500 jobs.