Guides

Wildfire Smoke Alerts: A Beginner's Guide to Staying Safe

June 18, 2026 · The Clime Team

Wildfires are a growing concern in many parts of the United States, and understanding how to respond to wildfire smoke alerts is crucial for your health and safety. This guide provides essential information on recognizing, interpreting, and acting upon these alerts.

What Are Wildfire Smoke Alerts?

Wildfire smoke alerts are official notifications issued by local, state, or federal agencies to inform the public about the presence and potential health impacts of smoke from nearby or distant wildfires. These alerts are typically based on air quality measurements and are communicated through various channels, including local news, government websites, and dedicated air quality monitoring platforms.

How Is Air Quality Measured During Wildfires?

Air quality during wildfire events is commonly assessed using the Air Quality Index (AQI), which measures the concentration of fine particulate matter (PM₂.₅) in the air. The AQI categorizes air quality into several levels:

Good (0-50): Air quality is satisfactory, and air pollution poses little or no risk.
Moderate (51-100): Air quality is acceptable; however, there may be a risk for some individuals sensitive to air pollution.
Unhealthy for Sensitive Groups (101-150): Sensitive individuals may experience health effects.
Unhealthy (151-200): Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Very Unhealthy (201-300): Health alert: everyone may experience more serious health effects.
Hazardous (301 and higher): Health warning of emergency conditions; the entire population is likely to be affected.

These categories help individuals understand the potential health risks associated with current air quality levels. (cdc.gov)

How Can I Stay Informed About Wildfire Smoke Alerts?

Staying informed is vital during wildfire seasons. Here are some effective ways to receive timely alerts:

AirNow Fire and Smoke Map: Developed by the Environmental Protection Agency (EPA) and the U.S. Forest Service, this interactive map provides real-time information on air quality, wildfire locations, and smoke forecasts. You can access it online or through the AirNow app. (airnow.gov)
Local News and Weather Services: Regularly monitor local news outlets and weather services for updates on air quality and wildfire activity in your area.
Emergency Alert System (EAS): Pay attention to EAS broadcasts, which provide critical information during emergencies, including wildfire smoke events.
NOAA Weather Radio: This service offers continuous broadcasts of official Weather Service information, including air quality alerts.

What Should I Do When a Wildfire Smoke Alert Is Issued?

When an alert is issued, it's essential to take appropriate actions to protect your health:

Stay Indoors: Limit outdoor activities, especially strenuous ones, to reduce exposure to smoke.
Create a Clean Room: Designate a room in your home where you can keep windows and doors closed. Use a portable air cleaner or air filter to help reduce indoor smoke levels. (cdc.gov)
Use Air Conditioning Wisely: If you have central air conditioning, set it to recirculate mode to prevent outdoor air from entering. Ensure your system uses high-efficiency filters (preferably MERV 13 or higher) to help clean the air. (cdc.gov)
Wear a Mask if Necessary: If you must go outside, consider wearing a well-fitting NIOSH-approved respirator or mask to reduce smoke inhalation. (cdc.gov)
Monitor Health Symptoms: Be alert to symptoms such as coughing, wheezing, shortness of breath, or eye irritation. If you experience any of these, seek medical attention promptly. (cdc.gov)

How Can I Protect Vulnerable Populations During Wildfire Smoke Events?

Certain groups are more susceptible to the health effects of wildfire smoke, including children, older adults, pregnant women, and individuals with pre-existing health conditions like asthma or heart disease. To protect these individuals:

Limit Exposure: Ensure they stay indoors during smoke events.
Create a Safe Environment: Use air purifiers and keep indoor air clean.
Consult Healthcare Providers: Seek advice on managing health conditions during smoke events.

How Does Climate Change Affect Wildfire Smoke Events?

Climate change contributes to increased temperatures and prolonged droughts, conditions that can lead to more frequent and intense wildfires. This, in turn, results in more widespread and prolonged exposure to wildfire smoke, affecting air quality and public health across larger regions. (lung.org)

What Are the Long-Term Health Effects of Wildfire Smoke Exposure?

Prolonged exposure to wildfire smoke can lead to chronic respiratory issues, cardiovascular problems, and other health complications. It's essential to minimize exposure during smoke events and seek medical care if you experience persistent symptoms. (cdc.gov)

How Can I Prepare for Wildfire Smoke Events?

Preparation is key to minimizing the impact of wildfire smoke:

Stay Informed: Regularly check air quality reports and stay updated on wildfire activity in your area.
Develop an Emergency Plan: Include steps for smoke events, such as evacuation routes and communication plans.
Prepare an Emergency Kit: Include masks, medications, and other essentials.
Create a Clean Room: Designate an area in your home to keep windows and doors closed during smoke events.

By understanding wildfire smoke alerts and taking proactive measures, you can significantly reduce health risks associated with wildfire smoke exposure.

Highlights:

These U.S. regions are blanketed in wildfire smoke. Here's what to know, Published on Wednesday, August 06