docs: add uhoo integration documentation

source/_integrations/uhooair.markdown

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+---
+title: uHoo
+description: Instructions on how to integrate uHoo with Home Assistant
+ha_release: 2026.1
+ha_iot_class: Cloud Polling
+ha_codeowners:
+  - '@getuhoo'
+  - '@joshsmonta'
+ha_domain: uhooair
+ha_integration_type: iot-cloud
+---
+
+The **uHoo** {% term integration %} lets you integrate [uHoo](https://getuhoo.com) devices into Home Assistant.
+
+## About uHoo
+
+uHoo delivers advanced, real-time indoor air quality monitoring designed to help you understand, manage, and improve the air in your home. By measuring 9 key environmental factors, uHoo provides accurate and science-backed insights that support healthier living and smarter home automation.
+
+What sets uHoo apart is its suite of proprietary health and safety indices that go beyond raw data to show you exactly how your environment affects your well-being, helping you act before problems even start.
+- Virus index
+- Mold index
+- Influenza index
+
+Connecting uHoo with Home Assistant unlocks even more possibilities: create air-quality-based routines, receive instant alerts, track long-term trends, and maintain a safer, more energy-efficient home environment.
+
+With uHoo, you can confidently make better decisions about your indoor air and stay on top of your game every day.
+
+## Supported devices
+
+- [uHoo Smart Air Monitor](https://getuhoo.com/home/smart-air-monitor)
+- [uHoo Caeli Air Monitor](https://getuhoo.com/home/caeli)
+
+## Prerequisites
+
+1. Download the **uHoo** app from the [App Store](https://apps.apple.com/us/app/uhoo/id1084953997) or [Google Play](https://play.google.com/store/apps/details?id=com.uhooair).
+2. Sign up for a uHoo account.
+3. Register at least one device to your account.
+4. Upgrade your account to uHoo Premium.
+5. Login the [uHoo web dashboard](https://premium.getuhoo.com/) and tap the **Account** icon in the bottom left corner.
+6. Navigate to the **API Key** section and enter your account password to create an API key.
+
+{% include integrations/config_flow.md %}
+
+## Supported functionality
+
+### Sensors
+
+- Temperature
+- Relative humidity
+- PM2.5 (Particulate Matter)
+- Total volatile organic compounds (TVOC)
+- Carbon dioxide (CO2)
+- Carbon monoxide (CO)
+- Air pressure
+- Ozone
+- Nitrogen dioxide (NO2)
+
+### Indices
+
+- Virus index
+- Mold index
+
+### Data frequency
+
+- This integration {% term polling polls %} data from the devices every 5 minutes.
+
+## Troubleshooting
+
+### I can't login the uHoo Premium web dashboard
+
+Login your uHoo app and confirm your account is in uHoo Premium, or reach out to [email protected] for further assistance.
+
+### I can't see my devices
+
+Make sure that your devices are visible in the uHoo app, and that you have used the same account to create the API key in the web dashboard.
+
+### I can't see my data
+
+Check your API key and make sure it is up to date.
+
+## Removing the integration
+
+This integration follows standard integration removal. We suggest that you update your API key afterwards for security reasons.
+
+{% include integrations/remove_device_service.md %}