Phoenix, AZ – Arizona has officially set a new record for the longest streak without an ozone exceedance, reaching 59 consecutive days and surpassing a decades-old benchmark.
According to the Arizona Department of Environmental Quality (ADEQ), the previous record of 58 days was set in 1979. This new milestone, announced Sunday, reflects ongoing improvements in air quality monitoring, emissions management, and public awareness.
An “ozone exceedance” occurs when ground-level ozone concentrations rise above the federal health standard set by the Environmental Protection Agency. Prolonged exposure to high ozone levels can cause respiratory issues and other health concerns, especially for children, the elderly, and individuals with asthma.
ADEQ officials credit a combination of meteorological conditions, reduced vehicle emissions, and state-led air quality initiatives for the extended streak. The department continues to monitor and forecast air quality levels through its official site, azdeq.gov/forecast.
As the streak continues, officials urge residents to stay informed about daily air quality updates, especially during Arizona’s hotter months when ozone formation is more likely.
The 59-day achievement is not only a historic benchmark but a reflection of collaborative efforts to improve Arizona’s environmental health.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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