EPA's AirNow website to see the interactive Fire and Smoke Map and access current information on wildfires, smoke and air quality. This website displays the most current and comprehensive information available, showing both regulatory air monitor and the most accurate PurpleAir monitor air quality info all on one map.
Effects of Wildfire Smoke
Wildfires are now a regular occurrence in California and can happen at any time of the year. Smoke from these wildfires often impacts the Sacramento Region. The amount of smoke and which areas are impacted is largely dependent on wind direction and can change throughout the day. Smoke is unhealthy to breathe. If you smell smoke, you are advised to remove yourself from the area or go indoors. For more information on the health effects of wildfire smoke, visit the
From the Spare The Air website
Wildfire Smoke Information and PM 2.5 Monitor Map
The PM 2.5 Monitor Map is activated on SpareTheAir.com when a wildfire smoke episode is anticipated or occurs. This map provides EPA's NowCast PM 2.5 levels at all regional monitors, including any temporary monitors placed and brought online by Sac Metro Air District, another air district or CARB.
Real-time Air Quality Readings
Real-time air quality readings are derived using EPA's NowCast algorithm, which uses longer averages during periods of stable air quality and shorter averages when air quality is changing rapidly, such as during a fire. NowCast allows current conditions maps to align more closely with what people are actually seeing or experiencing.
Free Air Quality Mobile App
Choose a link below to download the free Sacramento Region Air Quality app. The app displays EPA's NowCast for each monitoring site in the Sacramento Region. Push notifications for wildfire smoke alerts are also available through the app.
There are several non-regulatory low cost sensor tools to access real-time air quality information during a wildfire smoke episode, PurpleAir is one of those tools. The following is a map showing the locations of all PurpleAir's and their associated real-time air quality information. Google Chrome or Microsoft Edge browsers are recommended for viewing this content.
Social media is a great way to stay informed during a wildfire smoke episode. Here are some resources to follow.
During a wildfire smoke episode, the National Weather Service typically includes information on smoke in its robust daily forecast discussions. These forecasts incorporate wind direction and strength in addition to other atmospheric conditions that impact smoke transport.
Sac Metro Air District's daily air quality forecast also takes smoke modeling into consideration during episodes. This includes forecasting PM 2.5 levels during periods of concern in addition to factoring in wildfire smoke's impact on ground-level ozone formation.
Wildfire smoke includes particulate matter (PM). PM can be
directly emitted, as with fires, or it can form in the atmosphere
from reactions of gases such as nitrogen oxides. PM from wildfire smoke can cause serious health impacts.
The size of particles is directly linked to their potential
for causing health problems. Small particles (known as PM 2.5 or fine
particulate matter) pose the greatest problems because they bypass the body’s
natural defenses and can get deep into your lungs and potentially your
bloodstream. Exposure to such particles can affect both your lungs and your
Sac Metro Air District monitors PM 2.5 concentrations at several sites throughout Sacramento County.
Long-term exposure to particulate pollution can result in
significant health problems including:
Short-term exposure to particulate pollution can:
Even if you are healthy, you may experience temporary
symptoms, such as:
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