# PhotoAir (In/outdoor PM2.5)

> Mobile app uses AI and photos to measure PM2.5 air quality. (iPhone/iPad app by Bo Huang.)

- Source: https://appshunter.io/ios/app/photoair-inoutdoor-pm25/id1498944089 (this page in markdown: same URL + `.md`)
- Developer: [Bo Huang](https://appshunter.io/developer/1165297885)
- Category: Health & Fitness
- Price: Free
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 38 MB
- Languages: English
- Released: 2020-02-19
- Data updated: 2026-07-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/photoair-inoutdoor-pm25/id1498944089/reviews.md

## What is PhotoAir (In/outdoor PM2.5)?

PhotoAir is a unique and powerful App that can measure PM2.5 anywhere, anytime simply with a mobile phone taking a photo. The complex features embedded in the photo are extracted using advanced computer vision and artificial intelligence algorithms, based on which PM2.5 concentrations are eventually derived. This App accounts for different illumination attenuations caused by particulate matter and can make measurements during day or night regardless of weather, as long as a photo can be taken with a light source available. It is portable, easy to use, efficient, and suitable for any mobile phone user who has a need for monitoring his/her ambient air environment.

## Key features

- PM2.5 measurement via photos
- Computer vision and AI algorithms
- Day and night measurement capability
- Works in various weather conditions
- Portable and easy to use

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/photoair-inoutdoor-pm25/id1498944089/reviews.md

### 1/5 — Crashes immediately

*2024-11-14*

Both iPhone and iPad versions crash without opening

## Frequently asked questions about PhotoAir (In/outdoor PM2.5)

### How does PhotoAir measure PM2.5?

PhotoAir uses advanced computer vision and artificial intelligence algorithms to extract complex features from photos taken with your mobile phone. These features are then used to derive PM2.5 concentrations.

### Can PhotoAir measure air quality at night?

Yes, PhotoAir can make measurements during day or night, as long as a photo can be taken with a light source available. It accounts for illumination attenuations caused by particulate matter.

### What devices does PhotoAir support?

PhotoAir is supported on iPhone, iPad, and iPod devices. It is designed to be compatible with a wide range of mobile phones.

### What is the age rating for PhotoAir?

PhotoAir has an age rating of 4+, making it suitable for users of all ages who need to monitor air quality.

### When was PhotoAir last updated?

The latest version of PhotoAir was released on August 16, 2021. The app was initially released on February 19, 2020.

### Is PhotoAir free to use?

Yes, PhotoAir is available for free. There are no costs associated with downloading or using the core features of the application.

### Does PhotoAir have ads?

No, PhotoAir does not contain advertisements. The app is designed to provide a seamless user experience without interruptions.

### What is the user feedback on PhotoAir?

Based on the available data, PhotoAir has received one rating of 1.0 stars. Further user sentiment details are not provided.

## Version history (last 3 releases)

### 1.0.5 — 2021-08-16

bug fix

### 1.0.1 — 2021-08-12

Bug fix.

### 1.0 — 2020-02-19

No release notes.

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## More apps by Bo Huang

- [Touch Air](https://appshunter.io/ios/app/touch-air/id1165297886)

All apps by Bo Huang: https://appshunter.io/developer/1165297885

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-05.*