As long as ozone season sticks around, so do concerns about the health risks of poor air quality. Check out where ozone is an issue across the country.
Ground-level ozone is a hazardous air pollutant and a key component of smog. Here’s how it forms.
Ozone pollution can reach unhealthy levels in your city. Here’s how the number of unhealthy ozone days have changed over time.
While U.S. temperatures have been relatively mild this year, the rest of the world has endured near-record heat.
The past five years have been the hottest on record globally — and 2019 is on pace to continue that trend.
Climate change is making summer scorchers all the more extreme—check the trend for area.
Climate change means more hot summer days — leading to more persistent insects and unhealthy air.
U.S. summer heat is on the rise — affecting health, agriculture, and energy costs.