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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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Air District’s Clean HEET Program now accepting applicationsMarch 13, 2025
The Air District’s Clean HEET Program is now accepting applications for grants that can help to offset the cost of switching from wood-burning or pellet-burning stoves, fireplace inserts, or open-hearth fireplaces to an electric heat pump. A decommission-only option is also available for homeowners to remove existing open-hearth fireplaces or older, uncertified wood-burning stoves or inserts. Switching to an electric heat pump helps improve air quality in communities by replacing polluting wood-burning devices with cleaner heating options.
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Air District launches Charge! Program, expanding Bay Area access to electric vehicle chargersMarch 05, 2025
The Air District is announcing the launch of the Charge! Program’s grant application process to access at least $10 million in grant funding to offset the cost of purchasing and installing new chargers for light-duty electric vehicles at multi-family housing facilities, destinations, transit parking locations, and workplaces across the Bay Area. This funding is available to businesses, homeowner associations, non-profits, public agencies, and tribes. Applications are being accepted now through June 6, 2025, at 5PM.
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It has been reported that companies throughout the Bay Area have received letters dated January 1, 2025, February 1, 2025, and February 14, 2025, with misinformation about the Bay Area Commuter Benefits Program. These letters were not sent by the Bay Area Air District or the Metropolitan Transportation Commission and contain misinformation. Please disregard these letters if you received them. If your company is registered in the Commuter Benefits Program, you can check the Commuter Benefits Program website to verify your company's registration in the system.
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February 13, 2025
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February 01, 2025
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Other News Articles
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1/22/2025 Air District launches new name and branding
January 22, 2025
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12/30/2024 Air District asks public to not burn wood through the New Year’s holiday
December 30, 2024
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12/19/2024 Spare the Air Alert issued for Friday, December 20. Wood-burning is prohibited.
December 19, 2024
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12/8/2024 Spare the Air Alert issued for today, Sunday, December 8
December 8, 2024
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11/30/2024 Spare the Air Alerts issued for Sunday and Monday due to wood smoke pollution
November 30, 2024
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11/26/2024 Air District asks public to not burn wood over Thanksgiving holiday
November 26, 2024
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11/19/2024 Air District to host Clean Air Talk in San Lorenzo on December 7
November 19, 2024
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11/12/2024 Air District to represent Bay Area at COP29
November 12, 2024
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11/6/2024 Air District releases woodsmoke white paper for public comment
November 6, 2024
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10/31/2024 Air District and CARB fine Valero Refining Co. $82 million for air quality violations
October 31, 2024
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10/25/2024 Air District issues air quality advisory for Friday and Saturday
October 25, 2024
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10/18/2024 Air District issues air quality advisory for Friday
October 18, 2024
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10/17/2024 Air District to host Clean Air Talk in East Palo Alto on November 2
October 17, 2024
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10/17/2024 Air District fines Radius Recycling, formerly Schnitzer Steel, $575,000 for air quality violations
October 17, 2024
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