A new study reveals that ozone transported from the upper atmosphere is a widespread and previously underrecognized source of ...

Expect moderate levels of ground-level ozone, an urban pollutant that can affect those with sensitive respiratory systems, to be in the skies over the Houston metro area on Friday, according to Texas ...

The garden is being used to study ground-level ozone levels in the community. Although ozone is invisible, its effects can be observed on the leaves of certain plants, such as coneflowers, bush beans ...

Ozone from the stratosphere - 10 miles above ground, plunged to the surface producing air quality alerts across southern Colorado on Monday. This is rare. And, it came on top of the intense and ...

Air quality in the Reno-Tahoe area reached such harmful levels earlier this month that ground-level ozone was detected, Northern Nevada Public Health’s air quality management division said in a Friday ...

Elevated levels of ground-level ozone – a harmful air pollutant – are prompting authorities to issue Air Quality Alerts across various regions, particularly impacting areas under persistent heat domes ...

Nitrogen, volatile organic compounds and sunlight are the three ingredients that form the smog that regularly chokes people and plants, causing tens of thousands of respiratory-related deaths and ...

This week’s weather across the state is very summer-like, with plenty of sunshine, light winds and low humidity. A system of high atmospheric pressure has moved over the state and is producing little ...

The Minnesota Pollution Control Agency says ozone is the main concern that is triggering an air quality alert on Monday. Ground-level ozone is expected to be high in the afternoon and evening hours ...