The average number of days over 35 and 40 degrees in Roma has increased annually since the early 1990s. CSIRO and Bureau of Meteorology projections estimate that, without climate action, days over 40 degrees could rise from five days per year to 58 days in 2070 and as many as 84 days by 2090. Half of the nights in summer are projected to remain above 25 degrees by 2070, a level considered dangerous to human health. Increasing extreme heat will have profound effects on people, industries and ecosystems.