الوقت الحالي مهم.

A common Egyptian-style pronunciation is:

el-waʔt el-ḥāli mohemm

A rough breakdown:

• الوقت = el-waʔt
  The ق is usually pronounced as a glottal stop ʔ in Egyptian Arabic.
• الحالي = el-ḥāli
• مهم = mohemm

So the whole sentence sounds roughly like: el-waʔt el-ḥāli mohemm.

In Arabic, the present tense of to be is usually not said.

So:

• الوقت الحالي مهم literally looks like:
• the current time important

But it means:

• The current time is important

This is completely normal in both Standard Arabic and Egyptian Arabic.

Because الحالي is an adjective describing الوقت, and in Arabic adjectives must match the noun in definiteness.

• الوقت = the time
• الحالي = the current

So:

• الوقت الحالي = the current time

If the noun is definite, the adjective also has to be definite.

Yes. In Arabic, adjectives normally come after the noun they describe.

So:

• الوقت الحالي literally = the time current

This is the normal Arabic order, even though English says current time.

Because الوقت is grammatically masculine, so the adjective or predicate that describes it is also masculine:

• الوقت الحالي مهم = masculine

If the noun were feminine, you would use مهمة instead. For example:

• الفترة الحالية مهمة = The current period is important

So مهم agrees with الوقت.

Yes, it is understandable and natural, especially in educated or semi-formal speech.

However, in very casual Egyptian, people might also say things like:

• الوقت ده مهم
• الفترة دي مهمة

These can sound more conversational, depending on the context.

So الوقت الحالي مهم is fine, but it leans a little more toward formal or neutral language than very casual street speech.

الحالي means current or present.

So:

• الوقت الحالي = the current time / the present time

It describes something that belongs to now, not the past or future.

They are related, but they are not used the same way.

• الوقت الحالي = the current time / the present time
  This is a noun phrase.
• دلوقتي = now / right now
  This is an adverb.

So:

• الوقت الحالي مهم = The current time is important
• دلوقتي مهم would not normally be the same kind of sentence

If you want to say now, Egyptians usually use دلوقتي. If you want to say the current time, الوقت الحالي works well.

Here it is specifically the time, because of الـ at the beginning:

• وقت = time / a time
• الوقت = the time

In this sentence, الوقت الحالي is a definite phrase, so the best translation is:

• the current time or sometimes
• the present time

Normally, this order is the most straightforward:

• الوقت الحالي مهم

That is:

• subject: الوقت الحالي
• predicate: مهم

Arabic can sometimes change word order for style or emphasis, but for a learner, this is the safest and most natural basic order to use.