Air Quality in Napa County

Air Quality Impacts

To get the latest air quality reports, please click on the Air Now or BAAQMD links below.

In general, if you smell smoke, protect your health by following the measures listed below. Children, the elderly and those with respiratory conditions such as asthma, lung disease and heart disease are most at risk for harmful impacts and are considered sensitive groups. The most important protective action is to remain indoors. Please see "Air Quality and Actions to Protect Your Health".



The Bay Area Air Quality Management District advises that Purple Air Monitors are low-cost air monitoring sensors that can produce readings that are 2-3 times higher than regulatory monitors that undergo routine EPA calibrations and accuracy/precision checks. These monitors have been shown to be misrepresentative of particulate matter in situations like the wildfire smoke and very high readings should be interpreted with caution.

Bay Area Quality Management District (BAAQMD)

How do we measure air quality?

One of the most common ways to measure air quality is by measuring particulate matter, or PM. PM refers to fine particles in the air that are harmful to health.