# City Air

> Navigate London with real-time air pollution data and route planning. (iPhone/iPad app by Environmental Research Group.)

- Source: https://appshunter.io/ios/app/city-air/id706049131 (this page in markdown: same URL + `.md`)
- Developer: [Environmental Research Group](https://appshunter.io/developer/358970520)
- Category: Navigation, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 12.1 · 22 MB
- Languages: American English
- Released: 2013-11-08
- Data updated: 2026-06-22
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/city-air/id706049131/reviews.md

## What is City Air?

The City Air app - the healthiest way around London.

Are you a jogger, cyclist, driver or commuter? Do you know when pollution is high or low?

The City Air app will alert you on days when pollution is forecast to be high and give you tailored advice on simple actions you can take to reduce your emissions and exposure to air pollution.

Use the map to plan your journey and easily pick the lowest pollution route through the City - even in 3D!


You are the key to cleaner air.


This application was designed and developed by the City of London Corporation and Imperial College London.

## Key features

- Air pollution alerts
- Personalized advice
- Low pollution route planning
- 3D map view
- Emission reduction tips

## Recent user reviews (10 of 16)

All indexed reviews: https://appshunter.io/ios/app/city-air/id706049131/reviews.md

### 1/5 — Doesn’t work

*2026-03-06*

Tried to use it to route me somewhere and it kept saying “the data couldn’t be read because it isn’t in the correct format.” It did this no matter what address I entered

### 4/5 — When it works it’s helpful

*2022-09-29, version 2.3.1*

But I think the App has stopped working.  I no longer get alerts & the App support website is Not loading. People have stopped leaving reviews too 🫠

### 5/5 — Consistently reliable

*2019-04-12, version 2.0.3*

This is my go-to air quality app, even on days I’m not in London. I have several air quality measurement devices (Plume Labs’ Flow, LifeBasis DM106A, HoldPeak HP-5800D) and I often see if these correlate with various online services (CityAir app, Defra UK Air website, AQICN.org, Plume app and general weather forecasts). 

Over the years I’ve found the most reliable general indicator of poor air quality is the CityAir app combined with general weather forecasts. If CityAir is red and there are slow easterly winds then best avoid cycling in London! (For more localised information I’d recommend the Plume Labs’ Flow device though it can be a bit hit and miss). 

I particularly like the concise, scientific explanations which help explain unusual observations, e.g. why good air quality despite an easterly wind? CityAir explains the current air mass travelled at higher altitudes over mainland Europe so didn’t pick up as much pollution as it would lower down. 

Really great service, thanks very much from a mild asthma sufferer in London. I wish mainstream weather forecasts would use your excellent daily summaries.

### 1/5 — Great idea BUT....

*2019-03-12, version 2.0.3*

It doesn't work!  It does not allow me to access a user group or plan a route which makes it useless.

### 2/5 — Not reliable for high pollution conditions

*2018-01-09, version 2.0.3*

Have noticed running to and from work some days that I can tell it’s a high pollution day (can taste the fumes even away from the road, cigarette smoke collecting in patches of air even when there’s no smoker there, I’m finding it harder to breath for the same pace and have sore eyes when I get home. Checked my other pollution app Plume and it says there are high pollution levels whereas City Air says its low!

### 2/5 — Nice idea - but it doesn't work

*2017-04-28, version 2.0.1*

I really like the idea of this app, but sadly the rout function is not working. Every time I try to plan a route I get the same message: "the route could not be calculated because the data is in the incorrect format". I have tried addresses, post codes... what format do you want!

### 1/5 — Colour coding reversed?

*2015-06-27, version 1.1*

This app seems to have its colour coding reversed. In the centre of London the colour coding suggests lower pollution than in (leafy parts of) the suburbs. Confusing.

### 1/5 — Good idea but route function needs fix

*2015-06-18, version 1.1*

Also can't get the route planner to work. Would welcome an update that either explains how it's meant to work or a fix if it's broken.

### 1/5 — Doesn't seem to do what it claims to be able to do

*2015-04-09, version 1.1*

This just appears to be a map of London with a window explaining why there is high and moderate air pollution tomorrow. I tried the route planner but this doesn't work. It doesn't give you information on specific areas of London and which streets we better or worse.

Maybe I missed something?

### 5/5 — Simple. Clever. Useful.

*2014-07-19, version 1.0.1*

Useful info for those of us who want to live and work in London and to breathe ok. And in its way a campaign tool for better air quality. Thanks Corporation and Kings College.

## Frequently asked questions about City Air

### What is City Air?

City Air is a free navigation app designed to help users in London find the healthiest routes by providing real-time air pollution data and personalized advice.

### Does City Air have ads?

No, City Air is ad-free, allowing for an uninterrupted user experience focused on providing crucial air quality information.

### What devices support City Air?

City Air is available on iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users.

### How often is City Air updated?

The app was last updated on June 17, 2021, with version 2.3.1. While specific update frequency isn't detailed, this indicates ongoing development.

### What age rating does City Air have?

City Air has an age rating of 4+, making it suitable for users of all ages interested in air quality information.

### Can City Air help me plan my commute?

Yes, City Air allows you to plan your journey and easily pick the lowest pollution route through the city, even in 3D, to minimize your exposure.

### Who developed City Air?

City Air was designed and developed by the City of London Corporation and Imperial College London, a collaboration focused on environmental research.

### Does City Air offer offline navigation?

The provided information does not specify whether City Air offers offline navigation capabilities. It focuses on real-time pollution data which typically requires an internet connection.

## Version history (last 5 releases)

### 2.3.1 — 2021-06-17

- Minor widget bug squash

### 2.2 — 2021-06-16

- New live widgets show you realtime air quality exactly where you are - at a glance.
- Low pollution routing calculations now take into account road closures in the City of London.

### 2.1.2 — 2021-03-31

Update to push notification handling

### 2.1.1 — 2021-02-15

Updated messaging

### 2.0.4 — 2021-02-07

Fixes several issues including low pollution routing.

## Apps similar to City Air

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Waymap](https://appshunter.io/ios/app/waymap/id1464496795) | 4.6 (26) | Free | Navigation |
| [London Tube Map & Subway](https://appshunter.io/ios/app/london-tube-map-and-subway/id6748525000) | — | Free | Navigation |
| [Tube crowding, map & status](https://appshunter.io/ios/app/tube-crowding-map-and-status/id1474165106) | — | Free | Navigation |
| [Tube Map Pro](https://appshunter.io/ios/app/tube-map-pro/id419623451) | 4.8 (201) | $25.99 | Navigation |

## More apps by Environmental Research Group

- [London Air](https://appshunter.io/ios/app/london-air/id358970517)
- [airAlert](https://appshunter.io/ios/app/airalert/id991737402)
- [Lewisham Air](https://appshunter.io/ios/app/lewisham-air/id1335384134)

All apps by Environmental Research Group: https://appshunter.io/developer/358970520

## Related topics

[city air](https://appshunter.io/ios/topics/city-air) · [environmental research group](https://appshunter.io/ios/topics/environmental-research-group)

---

*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 2026-06-22.*