What “Airthings monitor not syncing” usually means
If your Airthings monitor is not syncing, the device is likely still measuring air quality but failing to send data to the Airthings app or cloud dashboard.
That gap can come from Wi‑Fi problems, Bluetooth pairing issues, firmware glitches, account mismatches, or a temporary outage.
The good news is that sync failures are often fixable without replacing the monitor.
The trick is identifying whether the issue is with the device, the phone, the router, or the Airthings account.
How Airthings syncing works
Airthings devices such as View Plus, Wave Plus, and other air quality monitors typically rely on one or more of the following paths:
- Bluetooth Low Energy for phone setup, nearby data access, or local communication.
- Wi‑Fi for cloud syncing and remote access in supported models.
- Airthings app and web dashboard for viewing historical measurements and device status.
If any link in that chain breaks, the monitor may appear offline or stop updating in the app even though it is still powered on and taking readings.
Common reasons an Airthings monitor is not syncing
Weak or unstable Wi‑Fi signal
Airthings monitors that depend on Wi‑Fi need a stable connection.
Interference from thick walls, distance from the router, or congestion on the 2.4 GHz band can interrupt uploads.
Router settings changed
If you replaced your router, changed your Wi‑Fi password, or enabled new security settings, the monitor may no longer connect.
Airthings devices generally work best on standard 2.4 GHz networks with WPA2 security.
Bluetooth pairing problems
During setup and troubleshooting, Bluetooth on the phone must be enabled and the app must have the correct permissions.
If Bluetooth is restricted, the app may fail to discover the monitor.
App, firmware, or account mismatch
Outdated firmware, an old version of the Airthings app, or logging into the wrong Airthings account can make a healthy device seem unsynced.
This is especially common when multiple email addresses are used across devices.
Power or battery issues
Some Airthings monitors run on batteries, while others use a USB or mains power source.
Low battery levels or an unstable power supply can delay data transmission or cause repeated disconnects.
Temporary service disruption
Occasionally, the issue is on the service side rather than in your home.
If Airthings servers are experiencing problems, devices may stop updating remotely even though local readings continue.
First checks to perform
Start with the basics before changing advanced settings.
These checks solve many Airthings monitor sync problems quickly.
- Confirm the monitor has power and is turned on.
- Check whether the LEDs or status indicators show an error or connection issue.
- Verify your phone has an active internet connection.
- Make sure Bluetooth is enabled on the phone.
- Open the Airthings app and confirm you are signed into the correct account.
- Check whether the device is shown as offline, disconnected, or not updating.
Step-by-step fixes for Airthings monitor not syncing
1. Move the monitor closer to the router
If the monitor is far from the Wi‑Fi access point, move it temporarily closer and wait for it to reconnect.
A strong signal often restores syncing without any other changes.
For best results, keep the monitor away from microwaves, cordless phone bases, and other devices that can cause interference.
2. Restart the monitor and router
A simple power cycle clears temporary network errors.
Unplug or power off the monitor if possible, restart the router, then turn the monitor back on after the router has fully reconnected.
This sequence helps the monitor obtain a fresh network lease and often resolves stuck connection states.
3. Check the Wi‑Fi network band
Many Airthings devices are designed for 2.4 GHz Wi‑Fi, not 5 GHz.
If your phone is connected to a fast dual-band network, the monitor may still need the 2.4 GHz SSID or a router configuration that keeps both bands available.
If you use a mesh system, confirm the device is joining a compatible band and not being bounced between nodes.
4. Reconnect the device in the Airthings app
If the monitor appears disconnected, remove it from the app only if you are sure you can set it up again.
In many cases, it is better to use the app’s reconnect or network setup flow rather than deleting the device entirely.
During reconnection, stand near the monitor with Bluetooth on and follow the app prompts carefully.
5. Update the Airthings app
App updates frequently include bug fixes, Bluetooth improvements, and compatibility updates.
Install the latest version from the Apple App Store or Google Play Store, then reopen the app and check device status again.
6. Check for firmware updates
Firmware updates can improve network reliability and data reporting.
If the app offers a device firmware update, allow it to finish without closing the app or interrupting power.
Do not move the device far away or let the phone go out of range while the update is running.
7. Verify permissions on your phone
On iPhone and Android, the Airthings app may need Bluetooth, local network, and location-related permissions to detect nearby devices correctly.
If permissions were denied earlier, syncing can fail during setup or recovery.
Review app permissions in the device settings and allow the access required by the app.
8. Re-enter Wi‑Fi credentials carefully
When reconnecting, a small typo in the network name or password can stop syncing immediately.
Enter the SSID exactly as it appears, including capitalization where relevant, and avoid hidden spaces.
If your router password has special characters, try retyping it carefully rather than pasting from a password manager if the app behaves inconsistently.
How to tell whether the issue is with Bluetooth or Wi‑Fi
Bluetooth issues usually show up during setup, pairing, or direct local communication.
Wi‑Fi issues usually appear as delayed or missing cloud updates, offline status in the app, or no remote access from another location.
- If the app cannot find the device nearby, focus on Bluetooth, permissions, and phone settings.
- If the app can find the device but the dashboard stays stale, focus on Wi‑Fi, router settings, and internet access.
Network and router settings that can block syncing
Some home network features can interfere with IoT devices like Airthings monitors.
If standard fixes fail, review these settings in your router admin panel:
- Guest network isolation, which may prevent the device from reaching the internet properly.
- MAC filtering, which can block the monitor from joining the network.
- WPA3-only security, which may not be supported on older devices.
- Hidden SSIDs, which can complicate device setup.
- AP/client isolation on mesh or enterprise-style networks.
If possible, place the monitor on a standard home network with a visible 2.4 GHz SSID and minimal restrictions.
When to reset the device
A factory reset is usually a last resort, but it can help when the monitor is stuck with old credentials or corrupted network data.
Use reset only after trying power cycling, app updates, and network reconnection.
Before resetting, confirm that you know the login details for the Airthings account and that you can physically access the device for setup afterward.
Resetting can require full reconfiguration.
When the problem is likely on Airthings’ side
If your router, app, and device all look normal but syncing still fails, the issue may involve a service outage or account-side problem.
Signs include multiple devices not updating at once or widespread reports from other users.
In that case, wait a while and test again later.
If the issue persists, contact Airthings support with the device model, serial number, app version, and a clear description of the sync failure.
Information to gather before contacting support
Support can help faster if you provide specific details.
Gather the following before opening a ticket:
- Device model and serial number
- Phone model and operating system version
- Airthings app version
- Whether the device uses Wi‑Fi, Bluetooth, or both
- What the app shows: offline, disconnected, no recent data, or setup failure
- Any recent router, password, or network changes
Practical prevention tips
Once the monitor is syncing again, a few habits can reduce future problems.
Keep the app updated, avoid frequent network changes, and make sure the monitor stays within reliable range of your router or hub.
- Use a stable 2.4 GHz Wi‑Fi network for compatible devices.
- Place the monitor in an area with consistent signal strength.
- Record your router name and password before making changes.
- Check the app occasionally for firmware prompts.
- Replace batteries before they run critically low.
With the right checks, most Airthings monitor not syncing issues come down to connection, permissions, or account setup rather than hardware failure.
