Air quality in Topic is currently good.

PM_2.5 levels are currently Good.

This is all particulate matter that is smaller than 2.5 micrometers in size.
Particulates are the most harmful form of air pollution due to their ability to penetrate deep into the lungs and blood stream.
Particulate pollution is often caused by burning of fossil fuels or natural sources like dust storms, forest fires, or sea spray

NO₂ levels are currently Good.

Nitrogen oxides, particularly nitrogen dioxide (NO₂), are expelled from high temperature combustion. NO₂ is a reddish-brown toxic gas has a characteristic sharp, biting odor, and can be seen as a brown-ish plume downwind of cities

PM₁₀ levels are currently Good.

This is all particulate matter that is smaller than 10 micrometers in size.
Particulates are the most harmful form of air pollution due to their ability to penetrate deep into the lungs and blood stream.
Particulate pollution is often caused by burning of fossil fuels or natural sources like dust storms, forest fires, or sea spray

SO₂ levels are currently Good.

Sulfur oxides, particulary Sulfure Dioxide (SO₂) is produced by in various industrial processes, especially when involving fuel combustion, and also by volcanoes. Coal and petroleum often contain sulfur compounds, and their combustion generates sulfur dioxide. Further oxidation of SO₂ can produce acid rain.

O₃ levels are currently Good.

Ground level ozone is formed in chemical reactions by NOx and VOCs in the presence of sunlight. High concentrations of O₃ can be a constituent of smog.