Currently in Boston — June 26, 2023: Unsettled but not without sunshine.

The weather, currently.

Humid weather is going to continue for the upcoming week. This pattern will allow showers and thunderstorms to build up Monday afternoon. Not everybody will see one but if you do they could be strong with downpours. Temperatures will be in the 70s over Cape Cod in the islands but 80s inland. A better chance for showers occurs on Tuesday and Wednesday afternoon along with plenty of clouds and some gl8mpses of sunshine. Temperatures will be 75 to 80 along with that ever present moisture in the air It will be a little less unsettled toward the end of the week but still the chance for showers and storms in the afternoon. I don't see a break in the humidity that looks definitive anytime soon.

— Dave Epstein

What you can do, currently.

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What you need to know, currently.

A heat wave centered on Mexico has entered its third week, with temperatures expected to continue setting new all-time records in both Mexico and the US.

The heat wave is worrying local officials due to its longevity, with an official in Nuevo Leon state calling it Mexico’s longest heat wave in at least 20 years.

Power grids in both Mexico and Texas have set new all-time records for electricity usage, as air conditioning has had to work 24-hours a day in millions of homes. Severe weather, thunderstorms, and tornadoes have been affecting regions of Colorado, Texas, and the Southeast US in recent days due to the “heat dome” effect.

Heat waves like this one — long-lasting and more intense than in all historical precedent — bear a strong fingerprint of fossil fuel-driven climate change. Like other remarkable heatwaves around the world in recent years, this heat wave would have been nearly impossible without the extra boost from global warming.

Don’t underestimate this heat if you’re experiencing it firsthand. Heat safety tips from Ready.gov are useful, and available in multiple languages.

—Eric Holthaus