Summary:
weather.com uses an ad provider who gives them a malicious ad .1% of the time.
weather.com uses an ad provider who gives them a malicious ad .1% of the time.
Install adblockers to universally block advertising networks--even on sites you would otherwise trust and like to support--and encourage all your friends and loved ones to do the same, especially if they're less technically literate.
"Only 0.1% of our profit comes from pureeing children into profit!" isn't a defense.