Currently, to monitor concentration levels and variations of ozone in the troposphere, researchers either directly measure ...

Ground level ozone (O3) also tropospheric ozone, is a trace gas of the troposphere, with an average concentration of 20–30 parts per billion by volume (ppbv), with close to 100 ppbv in polluted areas.

Users can also see a specific nearby monitoring site's current air pollution levels and results over the past 24 hours, as well as air quality forecasts to help plan weekly activities. Pollutant data ...

Ozone levels in Dallas-Fort Worth are the highest ... The council’s transportation officials monitor traffic signals to minimize the time of idling. Narvaez and Tower are pushing for the idea ...

“So, there’s still a long way to go before atmospheric ozone is back to the levels before the advent of widespread CFC pollution.” The agencies estimate that the Ozone Hole is still on track ...

At 8.5 million square miles, this year's hole is one of the smallest on record, yet the atmosphere is still far from being healed.

Expect moderate levels of ground-level ozone, an urban pollutant that can affect those with sensitive respiratory systems, to ...

High ozone levels usually drop off in mid-September, but Maricopa County broke federal ozone standards as late as Oct. 12 in 2024. This year was the first year the county has recorded any ozone ...

Colorado’s dry and hot summer contributed to another rough ozone season along the Front Range, repeatedly pushing pollution levels beyond federal health standards at official air monitors across ...

"So, there’s still a long way to go before atmospheric ozone is back to the levels before the advent of widespread CFC pollution." As scientists continue to monitor the ozone’s evolution ...