Summer is heating up in Boston as we find ourselves in the midst of a sizzling stretch here at home and in the tropics, where Tropical Storm Erin formed Monday morning off the coast of Africa.

Humidity is noticeable but not overwhelming just yet, with dew points in the low to mid-60s making for heat index values in the low to mid-90s Monday and Tuesday. Along the coast, sea breezes will offer some relief.

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This hot stretch continues through midweek. Humidity ramps up Wednesday, with dew points climbing into the low 70s and heat indices reaching the mid to upper 90s for much of the interior. A cold front approaching late Wednesday into Thursday will trigger isolated showers and thunderstorms. This front will usher

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