今日は昨日ほど

not as ... as yesterday

→ 今日
phrase Rare #38,065
not as ... as yesterday Used with a negative predicate to compare today with yesterday: “Today isn't as [adjective] as yesterday.” The adjective or description follows ほど.
JA: 今日は昨日ほど忙しくない。
EN: Today isn't as busy as yesterday.

今日は昨日ほど寒くない

Today isn't as cold as yesterday.

今日は昨日ほど暑くはない

Today isn’t as hot as yesterday.

今日は昨日ほど暑くない

Today isn't as hot as yesterday.

今日は昨日ほど湿気がない

Today isn’t as humid as yesterday.