Air Quality Advisory:   The AQI is primarily “good” in our District.  Currently there are multiple ongoing wildfires in CA, outside of our District, but they are not currently impacting our air quality (this may change in the future).    Visit our air quality page for more resources.

Clean Air.
Good Living.

Fresh Air,
Not Fumes

Everyone deserves to breathe fresh air. In Northern Sonoma County, we’re surrounded by vineyards and farms, with plenty of open space to explore. We’re lucky to work and play outside most of the year. That’s why clean air is so important.

At the Northern Sonoma County Air Pollution Control District (NoSoCo Air), we’re responsible for regulating the air quality in our region. We’re proud to help ensure our environment remains healthy, beautiful, and sustainable.

Live, Work, or Play Here?

There are two Air Districts in Sonoma County. Find out if you’re part of NoSoCo Air.

Need an Open Burn Permit?

Required by the state of California, apply for a permit to dispose of vegetative materials outdoors. Includes residential, agricultural, and prescribed open burning.  As of June 13th residential burning is suspended.

District Operations

Our lobby is currently closed for walk-in service. We welcome appointments to meet with you.  Please call (707) 433-5911 or e-mail for assistance. Feel free to use our 24-hour drop box on our front door to drop-off documents.

Don’t Get Burned by a Used Woodstove

The installation and sale or resale of a non-EPA certified wood heating appliance is strictly prohibited. Avoid penalties for non-compliance. Learn more about the regulations.

Smog Check Exemption

A vehicle registered in the Northern Sonoma County Air Pollution Control District territory may be issued a biennial Smog Check exemption.  Learn more…

Next General Board Meeting

The next general board meeting of the NoSoCo Air Board of Directors is August 10th.  Join our e-mail list at the bottom of the page for e-mail notifications.

Sonoma County Biomass Business Competition (BioBiz)

2021 Awards announced! Local entrepreneurs are reducing wildfire risk by developing a wood products industry in Sonoma County. Learn more about BioBiz and the winning projects.