The Air District is issuing the winter season’s first Spare the Air Alerts for Wednesday, November 26, and Thanksgiving Day, which bans burning wood, manufactured fire logs or any other solid fuel, both indoors and outdoors.
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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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Public Comment Deadline – Draft Local Community Benefits Fund Guidelines (Nov 25 at 5 PM)November 19, 2025
The public comment period for the Draft Guidelines for the Local Community Benefits Fund for Benicia, Richmond, and surrounding areas closes on Tuesday, November 25, at 5:00 PM. The Draft Guidelines describe the Local Community Benefits Fund, which will reinvest penalty funds back into communities impacted by air quality violations, supporting local projects that improve public health, reduce pollution, and promote a just transition.
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The Air District is announcing the launch of its Commercial Electric Lawn and Garden Equipment Exchange Program, a pilot grant program designed to reduce air pollution by replacing gasoline and diesel-powered landscaping equipment with cleaner, zero-emission electric alternatives.
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The Air District showcased the Bay Area’s leadership in clean air, climate innovation, and equity at the United Nations Climate Change Conference or COP30, held in Belém, Brazil from November 10 through November 21. During a virtual media availability on November 13, Air District leadership reflected on the importance of local and regional action to drive global climate progress.
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October 27, 2025
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Other News Articles
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10/22/2025 Air District awards $5M to electrify special education school buses
October 22, 2025
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10/17/2025 Air District issues prescribed burn notice for October 17 - 24, 2025
October 17, 2025
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10/9/2025 Air District fines Marathon Martinez Refinery $372,550 for violations
October 9, 2025
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10/1/2025 Air District Board adopts wood burning and prescribed burning amendments to protect public health and reduce wildfire risk
October 1, 2025
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9/27/2025 Air District issues air quality advisory for wildfire smoke through Sunday
September 27, 2025
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9/25/2025 Air District receives first finance award for excellence in budget process
September 25, 2025
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9/22/2025 Air District issues Spare the Air Alert for Tuesday
September 22, 2025
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9/15/2025 Air District awards $1.18 million to San Ramon Valley Unified School District for new EV school buses, charging infrastructure
September 15, 2025
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9/11/2025 Air District opens Clean Cars for All program with $10 million in funding
September 11, 2025
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9/10/2025 Air District strengthens leadership team, staffing to deliver on permitting priorities & strategic goals
September 10, 2025
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9/2/2025 Air District fines Chemtrade West US LLC $160,000 for air quality violations
September 2, 2025
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8/26/2025 Air District lifts air quality advisory for wildfire smoke
August 26, 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