Dubuque public and parochial schools and Western Dubuque Community School District will dismiss students two hours early today due to forecasted high temperatures.The National Weather Service forecasts a high near 89 degrees for today in Dubuque. Dubuque Community Schools officials cited high heat-index temperatures in their decision to release early. Dubuque district-run afternoon preschool will be canceled. Holy Family Catholic Schools will dismiss students two hours early, including those in afternoon preschool, though early childhood centers will remain open on their normal schedules.