आज बारिश हो रही है, इसलिए मैं घर में रहूँगी।

हो रही है is the present progressive form, meaning is happening or is going on.

So:

• बारिश = rain
• हो रही है = is happening

Together, बारिश हो रही है means it is raining.

Literally, it is closer to rain is happening than to the English structure it is raining.

Because बारिश is a feminine noun in Hindi.

In Hindi, the participle in this kind of tense often agrees with the noun:

• masculine singular: रहा
• feminine singular: रही
• plural: रहे

Since बारिश is feminine singular, Hindi uses हो रही है.

Compare:

• काम हो रहा है = the work is happening
• बारिश हो रही है = the rain is happening / it is raining

Hindi usually does not use a dummy subject like English it in weather expressions.

English says:

• It is raining

But Hindi simply says:

• बारिश हो रही है

So the sentence is built around the noun बारिश rather than around an empty subject like it.

This is very normal in Hindi.

इसलिए means therefore, so, or that’s why.

In this sentence:

• आज बारिश हो रही है, इसलिए मैं घर में रहूँगी।
• It is raining today, so I will stay at home.

It connects the cause and the result:

• cause: आज बारिश हो रही है = it is raining today
• result: मैं घर में रहूँगी = I will stay at home

रहूँगी is the future tense of रहना (to stay, to remain, to live) for a female speaker.

So:

• मैं रहूँगा = I will stay (said by a male)
• मैं रहूँगी = I will stay (said by a female)

The ending -गी shows feminine singular in the future.

So this sentence tells us that the speaker is female.

A male speaker would say:

आज बारिश हो रही है, इसलिए मैं घर में रहूँगा।

The only change is:

• रहूँगी → रहूँगा

Everything else stays the same.

में is a postposition meaning in.

So:

• घर = house / home
• घर में = in the house / at home

Hindi uses postpositions, which come after the noun, unlike English prepositions, which come before:

• English: in the house
• Hindi: घर में

Both can be used, but they are slightly different in feel.

• घर में = in the house, emphasizing being inside
• घर पर = at home, emphasizing location more generally

Because of the rain, घर में रहूँगी sounds natural since it suggests staying indoors.

A learner should know that both are common, but घर में can feel a bit more specifically inside the home.

Yes, मैं can often be omitted if the subject is clear from context.

For example:

• आज बारिश हो रही है, इसलिए घर में रहूँगी।

This still naturally means It is raining today, so I will stay at home, especially because रहूँगी already tells us the speaker is feminine singular.

Hindi often drops pronouns when they are understood.

Hindi usually follows Subject-Object-Verb order, and the main verb often comes near the end.

This sentence is:

• आज = today
• बारिश हो रही है = it is raining
• इसलिए = therefore / so
• मैं = I
• घर में = at home / in the house
• रहूँगी = will stay

A very literal order would be:

Today rain is happening, therefore I at home will stay.

That is normal Hindi structure.

Usually, बारिश हो रही है is better if you mean it is raining right now.

• बारिश हो रही है = it is raining / rain is falling now
• बारिश है can sound incomplete or less natural for ongoing rain in many contexts

If you want to describe the current weather event, बारिश हो रही है is the standard choice.

आज means today.

It is very commonly placed at the beginning:

• आज बारिश हो रही है।

But Hindi word order is somewhat flexible, so you may also hear:

• बारिश आज हो रही है
  though this is less neutral and may sound more contrastive depending on context.

For a learner, putting आज at the beginning is the safest and most natural choice here.

रहूँगी is pronounced roughly like ra-HOON-gee.

A few helpful points:

• रह = rah
• ूँ shows a nasalized oo sound
• गी = gee

So the whole word is approximately:

rah-hoon-gee

The nasalization matters, so it is not just रहूगी.

बारिश हो रही है is a very common and natural way to say it is raining.

You may also hear:

• बारिश पड़ रही है

This also means it is raining and is common in many regions.

For a learner, बारिश हो रही है is an excellent standard expression to remember.

A very literal translation is:

Today rain is happening, therefore I in the house will stay.

Natural English is:

It is raining today, so I will stay at home.

Seeing both versions can help you understand how Hindi builds meaning differently from English.