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What is the difference between dew point and relative humidity?

What exactly is the dew point? WBZ-TV's Eric Fisher explains.

Jul 17, 2025 (02:35)

Marblehead High senior posthumously recognized as Celtics' "Hero Among Us"

Marblehead High senior posthumously recognized as Celtics' "Hero Among Us"

Next Weather: WBZ Update

Next Weather: WBZ Update

Bus destroyed by fire outside Hopkinton child care center

Bus destroyed by fire outside Hopkinton child care center

Central Catholic soccer star Sarah Tressler is headed to the Ivy League

Central Catholic soccer star Sarah Tressler is headed to the Ivy League

Next Weather: WBZ Evening Forecast For October 23

Next Weather: WBZ Evening Forecast For October 23

Two men accused of stealing used cooking oil from Beverly restaurants

Two men accused of stealing used cooking oil from Beverly restaurants

Airbnb making changes to guest cleaning requirements

Airbnb making changes to guest cleaning requirements

Jaylen Brown's reaction to Jayson Tatum's video about Celtics trade goes viral

Jaylen Brown's reaction to Jayson Tatum's video about Celtics trade goes viral

Sandra Birchmore's therapist testifies in Matthew Farwell's trial

Sandra Birchmore's therapist testifies in Matthew Farwell's trial

Three buildings damaged by fast moving fire in Malden, displaces more than a dozen residents

Three buildings damaged by fast moving fire in Malden, displaces more than a dozen residents

Next Weather: WBZ Midday Update for Oct. 23

Next Weather: WBZ Midday Update for Oct. 23

Sandra Birchmore's texts about Matthew Farwell shown at trial during friend's testimony

Sandra Birchmore's texts about Matthew Farwell shown at trial during friend's testimony

State orders Hopkinton assisted living facility to stop taking in new residents

State orders Hopkinton assisted living facility to stop taking in new residents

Patriots radio analyst Scott Zolak says he's still optimistic about team after Bears loss

Patriots radio analyst Scott Zolak says he's still optimistic about team after Bears loss

How did the Patriots let the Bears game slip away?

How did the Patriots let the Bears game slip away?

Weekend To-Do List: Vintage scavenger hunt, fall foliage cruise, Halloween fun

Weekend To-Do List: Vintage scavenger hunt, fall foliage cruise, Halloween fun

Next Weather: WBZ morning forecast for Oct. 23, 2026

Next Weather: WBZ morning forecast for Oct. 23, 2026

Next Weather: WBZ Update

Next Weather: WBZ Update

Social media influencer "Clavicular" pleads not guilty to rape charge on Cape Cod

Social media influencer "Clavicular" pleads not guilty to rape charge on Cape Cod

Boston City Council considers publishing list of worst landlords

Boston City Council considers publishing list of worst landlords

2 Mass. state troopers suspended amid Martha's Vineyard rape investigation

2 Mass. state troopers suspended amid Martha's Vineyard rape investigation

2 New Bedford police officers fired, accused of misusing Flock cameras

2 New Bedford police officers fired, accused of misusing Flock cameras

Norton couple's nonprofit farm rescues animals, serves as refuge for people

Norton couple's nonprofit farm rescues animals, serves as refuge for people

Several Mass. high school football teams cancel games due to dwindling rosters

Several Mass. high school football teams cancel games due to dwindling rosters

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