Read the Air Quality Page and Your Exposure
See the air around you now from your monitors and public stations, log a reading, and understand how your exposure is worked out.
Updated
Location › Air Quality helps you know whether the air you breathe is healthy, from your own monitors, such as an Aranet4, and from public monitoring stations.
Around You Now
The top of the page shows the air where you are, each value against your reference ranges:
- Your Monitors: your own readings near you from the last 3 hours.
- Outdoor Air From Public Stations: for each pollutant, the nearest public station within 50 km that measured it in the last 8 hours, near your newest location, with the station’s name, its distance, and when it reported. The US Air Quality Index is named by its EPA category, such as Good or Moderate, in the EPA’s colours.
Public stations come from the US EPA’s AirNow, which covers the United States, Canada, and Mexico, and US embassies. Their data is preliminary, not yet verified, and the agency that reported it is credited beside it. A station describes the outdoor air where it stands, so it’s never counted as your exposure.
Map and History
Once you have readings of your own, the page also shows:
- Air Quality Map: the newest reading at each position in the chart’s range, for the metric you choose.
- Over Time: your exposure to one air quality metric, with a heatmap by time of day.
- History: every reading you logged or imported.
Log a Reading
- Choose Log, then Air Quality.
- Type the values you have, such as CO₂ or PM2.5.
- Set its Position: one of your places, a place or address you search for, your current location, or coordinates.
- Choose Log.
To bring in a monitor’s history, see Importing From an Aranet4 Monitor.
Your Exposure
A reading describes the air at a place, not you. Kaizora turns readings into your exposure using your location history: at each of your locations, your value is the newest reading within 100 metres taken in the hour before. The distance allows for indoor GPS, often tens of metres off; the hour keeps an old reading from a monitor you’ve since unplugged from counting as your air today.
Without a location history, your readings still show, but you have no exposure. Turn on tracking or import a history to get it.