More Information About the Air Quality

This is perhaps the biggest change in the Weather app, and it’s fantastic for those of us who live in big cities. 

You’re probably familiar with the Air Quality panel in the Weather app. As the name suggests, this feature shows you what the air quality is like and how safe it is to breathe without any type of protection.

If you tap the Air Quality panel, you’ll get information about the primary pollutant affecting the air. However, there’s rarely just one pollutant involved, which leaves you clueless about other particles affecting your surroundings.

Fortunately, that’s no longer the case with iOS 18. Now, when you go to the Air Quality panel, you’ll also get information about pollutant details that might still be affecting the air around you. You’ll now see the type of particle affecting the air and its concentration, usually measured in parts per billion (ppb). For instance, you might see pollutants like ozone, carbon monoxide, or nitrogen dioxide.

Ppb basically means the concentration of a pollutant in the air compared to the amount of air counted in billions. It basically means that if you see 1ppb, there is one unit of a pollutant for every billion units of air in that specific place.

All this is to say that the lower the ppb, the better it is for your health. You’ll still see a section with the primary pollutant in the air, but you’ll get more useful information as well.