Honkai: Star Rail Walkthrough & Guides Wiki

Honkai: Star Rail

Express Humidity Mission Guide

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Honkai Star Rail - Express Humidity

Express Humidity is a timed Adventure Mission in Honkai: Star Rail. Check out how to unlock this mission, its walkthrough, rewards for completion, and all choices in this guide!

List of Contents

Express Humidity Information

Mission Type Adventure Mission
Location Astral Express, Parlor Car
Client Pom-Pom

Timed Pom-Pom Side Quest

Honkai Star Rail - Pom-Pom Timed Quests

Express Humidity is a timed quest in Honkai: Star Rail. Players will need to complete the quest within 4 hours after receiving it in order to get its related quest rewards.

How to Unlock Express Humidity

Speak to Pom-Pom Aboard the Astral Express

Honkai Star Rail - How to Unlock Express Humidity

To unlock Express Humidity, players will need to speak to Pom-Pom in the Astral Express. If you spot Pom-Pom sweeping the floor, speak to them and choose the option with a <!> to get the mission.

Note: Pom-Pom quests are random. There is no guarantee that you will get Express Humidity when you arrive at the Astral Express and speak to Pom-Pom.

Express Humidity Walkthrough

Mission Walkthrough

Quest Walkthrough
1 Speak to Pom-Pom in the Parlor Car of the Astral Express and ask them, "Pom-Pom is so hardworking... sweeping again?"
2 Complete the conversation to receive the quest, "Express Humidity."
3 Head to the quest marker inside the Patrol Car. Interact with it to spray water on the floor.
4 Once done, speak to Pom-Pom (who is dozing off). This completes the quest, "Express Humidity."

All Choices and Results

There are no important dialogue choices to be made during this Adventure Mission.

Express Humidity Rewards

Mission Rewards
Star Rail - Sparse Aether Item Sparse Aether x2 Star Rail - Meteoric Alloy Item Meteoric Alloy x1 Star Rail - Credit Item Credit x8000

Honkai: Star Rail Related Guides

All Missions and Mission Types

All Astral Express Mission Guides

Astral Express Mission Guides
Battle for Health Don't Forget About Home Excessive Shedding
Express Humidity Fleeting Lights Height Measurement
Leisure Time Light Design in the Express Reflective Floor
Sudden Sadness Talk to Me The Conductor's Rewards
The Lost Button When Business Comes Knocking

All Adventure Missions

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