Office of Environmental Health Hazard Assessment

09/15/2026

OEHHA joined CalEPA and its BDOs celebrating fiestas patrias at Kettleman City with UNIDOS Network sharing important information on environmental health. Thank you to UNIDOS for this amazing event and opportunity.

OEHHA se unió a CalEPA y sus BDOs para celebrar las Fiestas Patrias en Kettleman City junto a UNIDOS Network compartiendo información importante sobre salud ambiental con la comunidad. ¡Gracias a UNIDOS por este increíble evento y por brindarnos la oportunidad de participar!

09/15/2026

🌎How can California and international partners learn from one another to address the growing threat of extreme heat?
One week from today, join us for International Heat Solutions: Through a California Lens, part of .

Hear about California’s investments to reduce heat risks and lessons learned from international efforts to protect communities, lives and livelihoods from extreme heat. This event will feature OEHHA’s Walker Wieland, who will discuss how CalHeatScore helps Californians stay informed, ready, and safe when temperatures rise.

📅September 22, 2026
⏰9–10:30 a.m. PDT
💻Virtual webinar

Together, we’ll explore how collaboration across communities and governments can accelerate action on one of our shared climate challenges.

🔗Register and learn more: climateweeknyc.org

09/14/2026

Seeking a qualified and enthusiastic scientist! Do you have expertise in reproductive toxicology? Would you like to help OEHHA assess the risks of exposure to chemicals that cause reproductive and developmental toxicity? Then see the job listing at https://calcareers.ca.gov/CalHrPublic/Jobs/JobPosting.aspx?JobControlId=530268.

Our employees enjoy excellent medical and retirement benefits, paid time off, and the satisfaction of contributing to the protection of public health in California.

Before applying, first review the minimum qualifications and follow the instructions for joining the Staff Toxicologist (Specialist) eligibility list at https://calcareers.ca.gov/CalHrPublic/Exams/ExamBulletin.aspx?ExamControlId=1280, or the Associate Toxicologist eligibility list at https://calcareers.ca.gov/CalHrPublic/Exams/ExamBulletin.aspx?ExamControlId=1279.

Come join our team!

09/10/2026

OEHHA’s Walker Wieland and Dr. Felicia Chiang appeared on ’s podcast to discuss CalHeatScore, ’s hyper-local webtool combining weather data and hospital ER statistics to calculate heat-health risk. They talked about how to use this tool, climate patterns, the science behind extreme heat, and how to prepare for it.

Listen to learn more at https://in-clear-terms.simplecast.com/episodes/inside-californias-weather-how-the-calheatscore-keeps-you-safe.

09/09/2026

09/08/2026

CalHeatScore forecasts that high temps are increasing health risks across much of CA. Risks last through Thursday for the South Coast & Inland Deserts Regions and impact the North Central & Bay Area Regions midweek. Find your local score and safety tips at calheatscore.calepa.ca.gov/map/

08/27/2026

OEHHA is excited to announce the launch of our updated CalHeatScore interface along with a brand new CalHeatScore User Guide!

What’s new?
• A more responsive, mobile friendly design
• New features, including saving your preferred locations
• Easy language toggling between English and Spanish—right on the map
• A comprehensive User Guide to help individuals and organizations use CalHeatScore to better prepare for and respond to extreme heat

Explore the improved tool and learn how CalHeatScore can support heat resilience in your community at CalHeatScore.CalEPA.ca.gov