Latest Heat & Air Quality stories in Weather, with AI-generated summaries from NewsSnap.ai.
Dozens of wildfires are burning across Oregon, with two of the largest fires having already destroyed homes and other buildings. Hot, windy conditions are exacerbating the situation, and an air quality advisory is in effect through Monday due to wildfire smoke in Central and Eastern Oregon.
Widespread life-threatening flash and urban flooding continues in south-central Texas, with considerable flooding impacts possible across central Texas. Meanwhile, severe thunderstorms are expected across portions of the Ohio Valley, Lower Great Lakes, Mid-Atlantic, and Northeast this afternoon and evening, with damaging wind gusts as the primary threat and a few tornadoes possible. A Heat Advisory is also in effect for Washington, D.C., until 7 PM EDT.
Toronto is currently experiencing an Orange Air Quality warning, attributed to smoke drifting from wildfires in northwestern Ontario. While temporary relief from showers and thunderstorms is anticipated, the smoke is expected to persist or return later in the day. Residents are advised to remain aware of the ongoing air quality concerns.
Météo-France has elevated seven departments in the Mediterranean region to an orange heatwave vigilance level. This alert signifies persistent and severe high temperatures, with some areas approaching 39 degrees Celsius, posing elevated public health risks. Several surrounding areas are also under a yellow heatwave vigilance.
Météo-France has issued an Orange Warning for extreme high temperatures in Nice, Alpes-Maritimes. Residents are advised to take precautions during the hottest parts of the day, limit outdoor physical activity, and seek cooler environments. Forecasts indicate temperatures in Nice could reach 39°C.
A Code Orange Air Quality Alert remains in effect for Bucks, Chester, Delaware, Montgomery, and Philadelphia counties on Saturday, July 18, 2026. While air quality is improving across most of Pennsylvania, these southeastern counties will see slower improvement due to expected later rainfall. Residents are advised to limit outdoor activities.
Environment Canada has issued extreme heat warnings across extensive areas of Ontario, Manitoba, Saskatchewan, and the Northwest Territories. Forecasts indicate temperatures in the mid to high 30s Celsius, with humidex values potentially reaching the mid-40s. These conditions present considerable health risks to residents.