SFGATE | A shelter-in-place was issued Monday morning after a fire at the Valero refinery in Benicia sent thick, black smoke drifting through the area. While the fire was reported as under control and air quality remained “healthy” as of 11 a.m., officials are conducting ongoing air monitoring amid public health concerns, just weeks after Valero announced potential plans to shutter the refinery by 2026.

ri-urbans | A new RI-URBANS study led by Karine Sartelet mapped air pollution at sub-100-meter resolution across five European cities, analyzing both traditional pollutants like NO₂ and PM₂.₅ and emerging ones such as black carbon and ultrafine particles. The research emphasizes the critical role of fine-scale modeling in accurately assessing exposure and guiding EU air quality policy updates.

Arizona Capitol Times | Arizona’s air quality crisis is worsening, with Maricopa County now averaging nearly 55 unhealthy ozone days per year, and advocates are urging the EPA to strengthen—not roll back—clean air protections. Despite public support for clean energy and tougher pollution standards, proposed federal policy reversals threaten to increase health risks in a state already struggling with extreme heat, wildfires, and long-term ozone nonattainment.

GlobeNewswire | The U.S. indoor air quality market is projected to grow from $10.5 billion in 2024 to $12.9 billion by 2029, driven by rising pollution, health concerns, and stricter regulations, according to BCC Research. With the South leading in market share and air purifiers dominating product demand, consumer awareness and technological innovation are reshaping the landscape of IAQ solutions nationwide.

Inside Climate News | Ember McCoy, a doctoral researcher studying air pollution in Detroit’s Black and Latino neighborhoods, is among hundreds affected by the Trump administration’s abrupt halt of existing National Science Foundation grants linked to diversity, equity, and inclusion. The funding freeze has jeopardized environmental justice research and sparked legal and academic backlash over its impact on underserved communities.

Washington State Department of Ecology | In celebration of Air Quality Awareness Week, Washington state’s Department of Ecology is spotlighting the behind-the-scenes teams who maintain its air monitoring network—ensuring real-time, reliable data to protect public health. From the Telemetry Team’s rapid data troubleshooting to the Calibration and QA crews’ technical precision, these unsung “air quality superheroes” keep the public informed and empowered to respond to pollution.

Business Wire | During Air Quality Awareness Week, Clean Air Partners is urging Baltimore-Washington residents to cut air pollution by greening their lawn care habits—highlighting that an hour of gas-powered mowing can emit as much pollution as a 300-mile drive. The group is promoting electric tool exchanges and backyard sustainability tips as part of a campaign to protect public health and reduce ground-level ozone.

American Lung Association | The 2025 State of the Air report reveals a sharp rise in ozone pollution across the U.S., driven not only by extreme heat but also by wildfire smoke, which fuels ozone formation even thousands of miles from the source. Once declining thanks to emissions controls, ozone levels are now rebounding—putting millions at heightened risk of serious respiratory and cardiovascular harm as climate change intensifies wildfires.

The Washington Post | The Trump administration briefly suspended air-quality monitoring at all 63 U.S. national parks, halting data collection critical for regulating pollution and protecting public health—though the decision was later reversed following internal pushback. Experts warn such disruptions undermine efforts to track harmful pollutants like ozone and particulate matter, which affect both ecosystems and human health.

SFGATE | A shelter-in-place was issued Monday morning after a fire at the Valero refinery in Benicia sent thick, black smoke drifting through the area. While the fire was reported as under control and air quality remained “healthy” as of 11 a.m., officials are conducting ongoing air monitoring amid public health concerns, just weeks after Valero announced potential plans to shutter the refinery by 2026.

ri-urbans | A new RI-URBANS study led by Karine Sartelet mapped air pollution at sub-100-meter resolution across five European cities, analyzing both traditional pollutants like NO₂ and PM₂.₅ and emerging ones such as black carbon and ultrafine particles. The research emphasizes the critical role of fine-scale modeling in accurately assessing exposure and guiding EU air quality policy updates.

Arizona Capitol Times | Arizona’s air quality crisis is worsening, with Maricopa County now averaging nearly 55 unhealthy ozone days per year, and advocates are urging the EPA to strengthen—not roll back—clean air protections. Despite public support for clean energy and tougher pollution standards, proposed federal policy reversals threaten to increase health risks in a state already struggling with extreme heat, wildfires, and long-term ozone nonattainment.

GlobeNewswire | The U.S. indoor air quality market is projected to grow from $10.5 billion in 2024 to $12.9 billion by 2029, driven by rising pollution, health concerns, and stricter regulations, according to BCC Research. With the South leading in market share and air purifiers dominating product demand, consumer awareness and technological innovation are reshaping the landscape of IAQ solutions nationwide.

Inside Climate News | Ember McCoy, a doctoral researcher studying air pollution in Detroit’s Black and Latino neighborhoods, is among hundreds affected by the Trump administration’s abrupt halt of existing National Science Foundation grants linked to diversity, equity, and inclusion. The funding freeze has jeopardized environmental justice research and sparked legal and academic backlash over its impact on underserved communities.

Washington State Department of Ecology | In celebration of Air Quality Awareness Week, Washington state’s Department of Ecology is spotlighting the behind-the-scenes teams who maintain its air monitoring network—ensuring real-time, reliable data to protect public health. From the Telemetry Team’s rapid data troubleshooting to the Calibration and QA crews’ technical precision, these unsung “air quality superheroes” keep the public informed and empowered to respond to pollution.

Business Wire | During Air Quality Awareness Week, Clean Air Partners is urging Baltimore-Washington residents to cut air pollution by greening their lawn care habits—highlighting that an hour of gas-powered mowing can emit as much pollution as a 300-mile drive. The group is promoting electric tool exchanges and backyard sustainability tips as part of a campaign to protect public health and reduce ground-level ozone.

American Lung Association | The 2025 State of the Air report reveals a sharp rise in ozone pollution across the U.S., driven not only by extreme heat but also by wildfire smoke, which fuels ozone formation even thousands of miles from the source. Once declining thanks to emissions controls, ozone levels are now rebounding—putting millions at heightened risk of serious respiratory and cardiovascular harm as climate change intensifies wildfires.

The Washington Post | The Trump administration briefly suspended air-quality monitoring at all 63 U.S. national parks, halting data collection critical for regulating pollution and protecting public health—though the decision was later reversed following internal pushback. Experts warn such disruptions undermine efforts to track harmful pollutants like ozone and particulate matter, which affect both ecosystems and human health.