The quality of the air we breathe is central to ensuring

safe and healthy campus environments for all.


Natural and human health are inseparably linked.

Buildings and their surroundings are as well.

With most people spending about 90% of their time indoors, ensuring a safe, comfortable, and efficient work space is especially important. SMCCCD subscribes to sustainable design, construction, and operations practices (often going well above and beyond regulatory requirements) to help keep you safe and productive while on campus. We monitor outdoor and indoor air quality to ensure the air you are breathing is clean.



Indoor Air Quality

As part of a layered approach to help ensure the health and safety of students, staff, faculty, administrators and others that come to campus, the Facilities Planning, Maintenance and Operations Department has taken a number of steps to mitigate the potential spread of COVID and other aerosolized viruses in the Heating Ventilation and Air Conditioning systems at Cañada College, College of San Mateo, Skyline College and at the District Administrative Office.

The Facilities Department has had a series of industry leading best practices in place to ensure the regular operations of our spaces supports safety, productivity and efficiency. Additional steps in response to COVID, and in preparation for a return to campus, have highlighted the effectiveness and comprehensiveness of these practices and helped us formalize other important steps in our maintenance routines.

Our efforts, including regular maintenance, ongoing monitoring and frequent cleaning and care of our systems, has proven valuable and effective. Additional quality assurance conducted by qualified staff has found that all offices, classroom or other spaces have sufficient fresh air, appropriate filtration and adequate controls in place. SMCCCD Facilities meet, and in many cases exceed, CDC requirements.



Outdoor Air Quality

Air quality refers to the amount of pollution present in ambient air. It can be measured using different indicators and sensors, and compared through an air quality index (AQI). To understand air quality readings, there are two primary metrics to be familiar with:

AQI = Air Quality Index

Air Quality Index is measured on a scale from 0 to 500. An AQI of 0 indicates good air quality, while 500 indicates hazardous air quality.

PM = Particulate Matter

Particulate Matter, or particle pollution, are solid or liquid particles such as dust or smoke in the air. PM2.5 measures the concentration of particles less 2.5 micrometers (μm) in diameter in the air. For comparison, the average human hair is 70μm in diameter.

Below are real-time data from our campus PurpleAir monitors, which report the current air quality on each campus. Use the chart from IQAir (included below the real-time data) to further understand the meanings of the AQI values.

Skyline College

San Bruno, CA

College of San Mateo

San Mateo, CA

Cañada College

Redwood City, CA