Toxic air spreads hundreds or even thousands of miles from where wildfires burn. Last week, Chicago felt the sting—and ...

AccuWeather long range meteorologist Paul Pastelok said long-lasting stretches of deep blue sky may not return to the ...

The sun may still shine this summer, but it won’t always look like it.Across the northern United States, residents can expect ...

Canadian wildfires brought some of the worst air quality in the world to Chicago last week. Since then, the AQI has gotten a ...

Everything looks relatively normal out there. But it’s not. The Illinois EPA reported Thursday that the Chicago area’s air ...

Editorial written by Chicago Tribune Board. This week as temperatures finally reached acceptable June levels, Chicagoans prepared to step outside — onto patios and rooftops, into a park or along our ...

To reduce pollution and protect public health, it is recommended to avoid gas stations during air-quality alerts or refueling ...