All data from the AirVisual app is sourced from ground stations - these are either government monitoring stations or community driven AirVisual Pro air monitors.

Still, there are quite a number of places all over the world that lack air quality monitoring data granularity, so people have little idea exactly how much pollution they are breathing in.

In response, many people around the world have decided to take matters into their own hands and launch community driven air quality monitors in places that lack this information. You can learn more about this process here: https://www.iqair.com/us/air-quality-community

Meanwhile, we look forward to continue rapidly growing the global network with the help of engaged community members, organizations and initiatives in the coming future. If you happen to know of an open data source that shows PM2.5 data for locations we missed, please share a link with us, we would be very interested to add it to our map.

Return to AirVisual Knowledge Base

Related news

View all

Large cloud of wildfire smoke over a forest

How Canadian wildfire smoke impacts global air quality

Transboundary wildfire smoke calls for global solutions. See how the Northern Hemisphere’s wildfire season impacts air quality.

Read more

Smoke over a city skyline

Wildfire Smoke Alert: Toronto ranked in top 10 most polluted cities

Smoke from Canada’s northern forest fires has drifted into the Great Lakes region. Find out more about this air quality event.

Read more

Smoke over the Grand Canyon.

Wildfire Map Spotlight: North Rim Fires, Arizona

A historic lodge has been destroyed as a pair of wildfires burns along the Grand Canyon’s North Rim. Find out more about these fires.

Read more