New Hampshire Live Wildfire Smoke Map

Wildfire (WFIGS)
New Wildfire - Past 24 hours
Smoke

Fire: WFIGS/NIFC (US), CWFIS/Natural Resources Canada (CA) · Smoke: NOAA/NESDIS HMS

Get Alerts For Wildfires In Your Area

The moment a wildfire starts near you, you'll get an instant alert and simple tips to reduce your smoke exposure.

What's In The Smoke

Human Hair≈ 70 µm

Smoke Particle≤ 2.5 µm

Smoke Particles

30xSmaller than a human hair

Fine enough to reach deep into the lungs. A MERV 13 is built to capture it.

How Far It Travels

Hundreds to Thousands of Miles

Wildfire

Your Home

Wildfire Smoke

It Doesn't Stay Local

Smoke rides the wind far downwind — you can get smoky air with no fire nearby.

What To Do During A Smoke Event

Simple steps to reduce indoor exposure.

Stay In, Close UpShut windows and doors to keep smoke out.
Set Fan To "On"Keeps air cycling through your filter, not just when heating or cooling.
Recirculate AirSwitch off fresh-air intake so you're not pulling smoke in.
Run A MERV 13Built to capture the fine PM2.5 in smoke.
Add A PurifierExtra filtration for the room you use most.
Wear an N95 if OutsideFits snug to block fine particles — a cloth mask won't.

The Best Air Filter For Wildfire Smoke

During smoke events, the EPA recommends upgrading to a MERV 13 filter — or the highest-rated filter your system can handle — to help reduce the fine particles smoke brings indoors. MERV 13 is the level most home HVAC systems can run while still capturing PM2.5, the fine particulate that makes up the bulk of wildfire smoke.

Filterbuy MERV 13 Optimal filter — captures household dust, pollen, mold, smoke, and more

Captures PM2.5 particles
Blocks ash, soot, and smoke odor
Keeps your indoor air safe—even when the outdoor air is dangerous
Meets the EPA's recommended rating for filtering fine wildfire smoke particles.

Find your size

Facts About Wildfires

Over 70,000 wildfires burn in the U.S. every year.
Wildfire smoke can travel 1,000+ miles, affecting states that aren't even near the blaze.
Exposure to wildfire smoke can worsen asthma, trigger heart issues, and lead to ER visits.
Indoor air can hold more fine particles during wildfire events unless it's properly filtered.
The EPA advises using MERV 13 filters or portable HEPA air cleaners during wildfire smoke events.