Environmental Quality Newsroom

Jul 28, 2021 - Pima County Department of Environmental Quality is issuing a High Pollution Advisory for ground-level ozone air pollution for the Tucson metropolitan area. Individuals who are especially sensitive to air pollution may experience shortness of breath, coughing, throat irritation, wheezing and breathing discomfort. It is possible that ozone levels may be elevated tomorrow, if weather conditions are similar. 

Jul 22, 2021 - A High Pollution Advisory for ground-level ozone air pollution is issued for the Tucson metropolitan area. 

Jul 20, 2021 - PDEQ issued an advisory for ground-level ozone pollution for the Tucson metropolitan area on July 20, 2021. 

Jul 09, 2021 - Ozone Pollution Air Advisory has been issued for ground-level ozone air pollution for the Tucson metropolitan area.  

Jun 14, 2021 - Ozone Pollution Air Advisory has been issued for ground-level ozone air pollution for the Tucson metropolitan area. 

May 27, 2021 - Use the Pima County Cut Down Pollution Lawn and Garden Equipment Replacement voucher program to replace gasoline-powered devices with zero-emission equipment. 

May 25, 2021 - In accordance with 40 Code of Federal Regulations (CFR) §58.10 Pima County Department of Environmental Quality (PDEQ) has the annual ambient monitoring network plan available for public inspection on May 25, 2020, more than 30 days prior to submission to the U.S. Environmental Protection Agency. The 2020 Ambient Air Monitoring Network Plan contains descriptions of and changes to the air quality monitoring network. The document is also available for review at PDEQ, 33 N. Stone Ave., Suite 700, Tucson, AZ from 8:30 a.m. to 4:30 p.m., Monday through Friday. Public comments may be submitted in writing to PDEQ, Attention: Mike Draper, 33 N. Stone Ave., Suite 700, Tucson, AZ 85701. Written comments are due before the close of business on June 25, 2021. Additional information is available by calling 520-724-7400. 

Apr 29, 2021 - Ozone season has begun. Longer, hotter days means ground-level ozone air pollution may be an issue. Levels have been trending down through time, but still: protect your health and keep aware of air pollutant levels now through Sept. 

Apr 21, 2021 - Pima County DEQ issues Air Quality Health Watch for particulates due to forecasted high winds. 

Apr 01, 2021 - We challenge you to 'picture' clean air. Submit photos or poetry about designated air themes for a chance to win prizes in our #ThisIsCleanAir Challenge. Entry deadline is April 22.  

Mar 12, 2021 - The Pima County Department of Environmental Quality (PDEQ) is holding a virtual Formal Public Hearing on Tuesday, March 16, 2021 from 5:30 p.m.- 6:30 p.m. PDEQ proposes to revise the EPNG existing Air Quality Permit No. 425. EPNG is proposing to install gas cooling equipment and gas recirculation for compression to allow for operational flexibility. An emergency generator is also proposed to be added to the site. The proposed project expects to trigger a major modification for Nitrogen Oxide (NOX) and Carbon Monoxide (CO) subject to the Prevention of Significant Deterioration (PSD) permitting pursuant to title 40 of the Code of Federal Regulations, section 52.21 (40 CFR 52.21). 

Mar 05, 2021 - The Pima County Department of Environmental Quality (PDEQ) is holding a virtual Open House on March 9, 2021 from 5:00 p.m.- 6:30 p.m. PDEQ proposes to revise the El Paso Natural Gas (EPNG) existing Air Quality Permit No. 425. EPNG is proposing to install gas cooling equipment and gas recirculation for compression to allow for operational flexibility. An emergency generator is also proposed to be added to the site. The proposed project expects to trigger a major modification for Nitrogen Oxide (NOX) and Carbon Monoxide (CO) subject to the Prevention of Significant Deterioration (PSD) permitting pursuant to title 40 of the Code of Federal Regulations, section 52.21 (40 CFR 52.21). 

Feb 12, 2021 - On Sunday, March 7, 2021 Pima County Flood Control, Tucson Clean and Beautiful, and the Sonoran Institute invite you to participate in a public clean up event for our washes. Check out the event sign-up page for three sites along the Santa Cruz River and to see the event flyer. Participants will be requested to follow COVID-19 Safety Guidelines. Hope to see you there!