Category Archives: Featured

Pilot Agricultural Chipping Program Survey

The District was awarded funding from the U.S. Environmental Protection Agency (EPA) 2021 Targeted Airshed Program to develop a pilot Agricultural Chipping Program to provide an alternative to open burning of orchard pullouts and prunings.

A short survey has been developed to gather information regarding interest for the current funding available, future chipping needs that will help District staff apply for additional funds, and develop a larger program. Agricultural businesses within the District that are interested in participating in the program are encouraged to complete the survey using the link below.

Survey participants will be added to an interest list for when the program opens.

Take the Survey

YSAQMD Incentive and Grant Programs

In an effort to encourage clean-air improvements and projects by our partners and to help make the improvements affordable, the District funds a variety of incentive programs that directly benefit the public. In 2021, the District awarded a total of $1,760,689 through incentive programs. Read more about these incentive programs below. 

In spring 2022, the District held solicitations for several new and returning incentive programs. The Carl Moyer Program, FARMER Program and the Clean Air Funds program have closed the solicitation period.

The Woodsmoke Reduction Program is currently open and accepting applications for the voucher program. 

Find out more about these incentive programs below and sign up for email updates on individual programs. 

Carl Moyer Program 

FARMER Program

Clean Air Funds

Woodsmoke Reduction Program 

2021 Annual Report Now Available

The Yolo-Solano Air Quality Management District’s 2021 Annual Report is now available.  Within the report is a comprehensive look at the District’s programs, finances and operations for 2021.  This year the report is available as a digital magazine  below to ensure that the information provided in this report is readily available to the public.  

We hope you enjoy this review of our work and thank you for your continued interest in the Yolo-Solano Air Quality Management District and air quality.

The Yolo-Solano AQMD’s  Annual Report provides a comprehensive look at the District’s programs, finances and operations. Air quality information for the last year while adjusting to continuing challenges of COVID-19.

If you would like to request a printed copy of the YSAQMD’s 2021 Annual Report, please contact the District Office at (530) 757-3650.  A pdf version of the report is available here.




2021 YSAQMD Annual Report


Don’t Light Tonight Begins November 1st

The Yolo-Solano Air Quality Management District’s annual Don’t Light Tonight program officially begins on November 1st and runs through the end of February.  During this period, the District experiences an increased use of woodstoves and fireplaces which raise the level of particulate pollution.  Common weather conditions cause this increased pollution to become trapped closer to the ground, causing breathing problems for many residents, especially the very young, elderly and those with respiratory ailments and heart disease.

We encourage all residents to stay informed and not burn on days DLT alerts are issued.  Learn more about the program, including more information on wood smoke and health at  Sign up for alerts at

Read the full press release here.

Air Aware, Winter 2020 Edition Is Here

In the Winter issue of Air Aware the new season of Don’t Light Tonight begins, this annual campaign encourages District residents to not burn wood and keep their neighbors safe from air pollution.  Get festive while learning more about the District’s incentive programs, Cheers! for emission reductions and the Quarterly Air Quality Report Card. Read the new issue here.

Guidance for LNU Lightning Complex Debris and Demolition Cleanup

As residents begin the grueling process of recovery in the aftermath of the LNU Lightning Complex fires, the District is providing guidance to assist in the safe removal of debris from impacted areas. The debris and ash from homes and structures that are damaged or destroyed by fire can contain asbestos and other hazardous materials. Ash and building materials such as drywall, insulation, tiles and more may contain asbestos, if inhaled can cause serious health effects.

Yolo-Solano AQMD regulates asbestos testing, surveying and removal in specific instances. To assist cleanup efforts YSAQMD has developed a chart to assist in determining if the cleanup project being conducted would be required to comply with these regulations.

For additional information on the Districts regulation and typical procedural guidelines an forms, visit the Asbestos page.

Flex Alert: Extreme Heat Declared ‘Emergency Event’

Statewide Flex Alert, Sat. Sept. 5 to Mon. Sept. 7, 3pm to 9 pm

A Flex Alert was declared by California ISO due to an Extreme Heat Event expected to last through Tuesday with record breaking highs above of 110 degrees. Residents are asked to reduce their use of grid-based electrical power during the hours of 3 p.m. and 10 p.m. beginning Saturday, September 5 through Monday September 8.  

Conservation Tips
• Set thermostat at 78° or higher and turn off, if away
• Cool with fans and draw drapes
• Turn off unnecessary lights and appliances
• Use major appliances in morning or late evening
Learn more: (Available in Spanish and Vietnamese)

In addition to the Flex Alert, the Governor issued a Proclamation of State of Emergency for the Extreme Heat Event that is in effect now through 11:59 p.m. on Tuesday, September 8, 2020.  The Proclamation also calls for residents to voluntarily reduce their grid-based electrical power use over the Labor Day weekend.  Under this Proclamation use of stationary and portable generators will fall under regulations for “emergency use” during an “emergency event”.  A copy of the Proclamation can be seen here.

For information on stationary or portable generators, select one of our FAQ Sheets: 
Emergency Generators & PSPS for Residents
Emergency Generators & PSPS for Businesses

Additional resources and information available:
Flex Alert
National Weather Service- Heat 

Yolo-Solano AQMD Extends Air Quality Alert

(August 31, 2020) – The Yolo-Solano Air Quality Management District continues to extend the Air Quality Alert due to smoke from the LNU Lightning Complex and now smoke from nearby August and North Complex fires. Today marks the 15th day an Alert has been issued for the District, which includes all of Yolo County, Vacaville, Dixon and Rio Vista. Air monitors continue to show significant impacts from smoke causing AQI in the Unhealthy for Sensitive Groups to Unhealthy ranges throughout the District.

Hazy skies and poor air quality should persist in the District for most of the week as north winds are forecasted to continue pushing smoke into the valley through Wednesday. Seasonal stagnant weather conditions and a potential heat wave will contribute to continued air quality impacts across the region.

The District recommends the following actions:

• Lower your outdoor exposure, especially if you are sensitive to air quality. Children, the elderly, women who are pregnant, and people with respiratory or heart conditions should be careful to avoid exposure or outdoor activity. Follow your doctor’s directions regarding medicines and asthma management plans. Call your doctor if symptoms worsen.

• Reduce your outdoor physical activity. Exercise increases the amount of air lungs intake by as much as 10 to 20 times. Air pollution affects everyone, regardless of age, fitness level or health.

• Close windows and doors to prevent additional particulate matter from entering. Turn on your air conditioner if possible. If you are driving, reduce the amount of outdoor air coming inside the car by keeping windows and doors closed. Keep vents shut and if possible use the car’s ‘recirculate air’ option.

• Check current particulate matter readings and conditions by visiting

• Sign up to receive air quality alerts from the District at

While smoke impacts persist, Air Quality Alerts will be updated and posted daily on Facebook and Twitter. For more information on the Yolo-Solano AQMD, including signing up for air quality alerts, visit Connect with the District on Facebook at: or on Twitter at:

For a pdf version of this press release, click here.

For information on wildfire smoke, visit this page

Yolo-Solano AQMD Issues Air Quality Warning

An update to this press release can be seen here.

(August 19, 2020) The Yolo-Solano Air Quality Management District issued an Air Quality Alert today for the entire District, including Vacaville and Winters where fires are currently burning. The Alert was issued to notify residents of poor air quality conditions. Air quality is already unhealthy or unhealthy for sensitive groups in many areas due to smoke from the LNU Lightning Complex fires that began in Napa County on Monday.

If you see or smell smoke in the air, be cautious and use common sense to protect yourself and your family’s health. Sensitive groups, including children, older adults and people with heart or lung disease, should limit the amount of time spent outdoors to reduce exposure to smoke pollutants. Everyone should avoid outdoor exercise when smoke is in the air. Please note that cloth masks are not an adequate prevention for wildfire smoke being inhaled. If you develop mild symptoms such as eye irritation or coughing, contact your doctor. Call 9-1-1 or go to an emergency department if more serious symptoms develop, e.g. chest tightness or pain.

“Wildfire smoke is especially harmful because of PM2.5 (Particulate Matter),” said the District’s Air Pollution Control Officer Mat Ehrhardt. “PM2.5 is so small, about 1/30 the width of a human hair, that it can penetrate deep into the lungs.”

The level of smoke may vary during the day and will depend on weather and fire conditions. Smoke tends to settle at ground level in the evenings and early mornings, which is when we see the highest concentrations of PM 2.5 in our air. This Air Quality Alert will be updated daily while fires continue to burn and smoke impacts are experienced.

The Yolo-Solano AQMD is the air pollution control authority and permitting agency for Yolo County and the northeast portion of Solano County including Vacaville, Dixon and Rio Vista. For more information on the Yolo-Solano AQMD, including signing up for air quality alerts, visit Connect with the District on Facebook at: or on Twitter at:

For a pdf version of this press release, click here.