The Air District has selected grantees for Cycle 2 of the James Cary Smith Community Grant Program, awarding $3.5 million to 12 community-based and nonprofit organizations across the region.
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Marin County
Learn about Marin County - its climate, potential air pollution concerns, and current air quality. You can also view upcoming Air District events in Marin County and read about local efforts to improve air quality.
Latest News
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The Air District is encouraging residents to prepare for potential smoke impacts this summer to protect their health in the event of widespread unhealthy air quality.
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The Air District and Alameda County District Attorney Ursula Jones Dickson filed a joint civil lawsuit against Radius Recycling, formerly Schnitzer Steel Industries, for air quality violations related to the fire at the company’s facility in West Oakland on August 9-10, 2023. In addition, previous enforcement actions by the Air District and the district attorney required Radius Recycling to install new equipment that has eliminated hundreds of tons of air pollution and reduced cancer risk by 84 percent since 2022; today the Air District finalized the operating permit for this important equipment.
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The Air District is lifting an air quality advisory for the Bay Area due to wildfire smoke that was originally scheduled to last through today, Monday, July 14. Over the weekend, smoke from the Butler and Green wildfires had been moving down the Sacramento Valley and impacting air quality in portions of the Bay Area. However, as of Monday morning, the Bay Area is experiencing strong onshore winds, and smoke has remained mostly outside of the region. Air quality has been in the Good Air Quality Index category. Moderate onshore winds are expected to continue into Tuesday, keeping the smoke outside of the Bay Area. As the week progresses, these onshore winds will turn southerly in northern California, and this also is expected to keep the smoke from moving towards our region.
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Upcoming Events
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Other News Articles
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7/2/2025 Air District urges residents to skip the sparklers this Fourth of July
July 2, 2025
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6/23/2025 Air District extends air quality advisory for wildfire smoke through Monday
June 23, 2025
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6/22/2025 Air District issues air quality advisory for wildfire smoke for Sunday
June 22, 2025
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6/18/2025 Air District issues air quality advisory for smoke from Somersville brush fire for Wednesday evening
June 18, 2025
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6/12/2025 Air District increases Vehicle Buy Back Program incentive and expands eligibility effective July 1
June 12, 2025
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6/10/2025 Air District and Chevron reach settlement with enhanced requirements for air monitoring and transparency
June 10, 2025
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6/4/2025 Air District allocates $1.3 million to improve air quality in West Contra Costa County schools
June 4, 2025
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6/4/2025 Air District extends air quality advisory for wildfire smoke through Thursday
June 4, 2025
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6/3/2025 Air District extends air quality advisory for wildfire smoke through Wednesday
June 3, 2025
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6/2/2025 Air District issues air quality advisory for wildfire smoke for Monday and Tuesday
June 2, 2025
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5/31/2025 Air District issues air quality advisory due to flaring at Chevron Refinery
May 31, 2025
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5/29/2025 Air District issues Spare the Air Alert for Friday
May 29, 2025
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5/21/2025 Air District Releases Draft Ambient Air Monitoring Network Plan
May 21, 2025
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5/14/2025 Air District opens funding opportunity for zero-emission transport refrigeration units
May 14, 2025
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5/6/2025 Air District Issues 3 Notices of Violation to Valero as a result of the May 5 fire
May 6, 2025
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5/5/2025 Air quality advisory for smoke from fire at Valero
May 5, 2025
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5/5/2025 Spare the Air smog season begins
May 5, 2025
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5/1/2025 Air District Issues 18 Notices of Violation to Martinez Refining Company as a result of the February 1 fire
May 1, 2025
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5/1/2025 Air District Soliciting Applications for Community Advisory Council Seats
May 1, 2025
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4/30/2025 Apply now to join the Community Workgroup for the Refinery Community Particle Fallout Sampling Program
April 30, 2025
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4/23/2025 Air District fines Kinder Morgan, Inc. $226,990 for air quality violations
April 23, 2025
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4/7/2025 Air District to host virtual webinar overview of the proposed budget for Fiscal Year 2025-2026
April 7, 2025
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3/27/2025 Point Richmond and North Richmond Odor
March 27, 2025
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3/25/2025 Air District asks community members to help shape how millions in community funds are spent
March 25, 2025
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3/21/2025 Join Webinar to Explore Careers at the Air District
March 21, 2025
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3/13/2025 Air District’s Clean HEET Program now accepting applications
March 13, 2025
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3/5/2025 Air District launches Charge! Program, expanding Bay Area access to electric vehicle chargers
March 5, 2025
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3/3/2025 Notice Regarding Fraudulent Bay Area Commuter Benefits Program Letters
March 3, 2025
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2/13/2025 MRC Refinery Fire Information
February 13, 2025
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2/1/2025 Air quality advisory for smoke from fire at MRC Refinery in Martinez
February 1, 2025
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1/28/2025 Air District asks public not to light firecrackers and fireworks or burn wood over Lunar New Year holiday
January 28, 2025
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1/22/2025 Air District launches new name and branding
January 22, 2025
Marin County lies south of Sonoma County, bounded by the Pacific Ocean to the west, San Pablo Bay to the east, and the Golden Gate to the south. One Marin County representative sits on the Air District’s Board of Directors.
Climate
The west coast and southern portions of Marin County are often subject to cool marine air and substantial fog. Temperatures in these areas remain steady through the year because of the nearby ocean. The eastern side of Marin County is warmer and has less fog, due in large part to its distance from the ocean. The extra distance from the ocean allows the marine air to be heated before arriving at eastern Marin cities. Prevailing winds throughout the county are generally from the northwest, with wind speeds highest along the west coast. Annual rainfall in the mountains is generally higher than in most parts of the Bay Area, averaging 37 to 49 inches. The majority of rainfall across the county occurs November through March.
Interactive Air Monitoring Stations Map
Air Quality in Marin County
Ozone and fine particle pollution, or PM2.5, are the major regional air pollutants of concern in the San Francisco Bay Area. Ozone is primarily a problem in the summer, and fine particle pollution in the winter.
Along the Marin County coast and in southern Marin County, clean air from the Pacific Ocean helps to keep air pollution at a minimum. Elsewhere in Marin, ozone only rarely becomes a concern, but the hilly terrain and colder winter temperatures can trap PM2.5 near the surface, resulting in air quality that exceeds health standards.
Spare the Air Status
Last Updated: 4/21/2017