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Lassen Volcanic National Park National Park in CA
"Hydrothermal features and volcanic peaks."
LIVE DATA 📍 40.498, -121.421
Current Air Quality
132
Unhealthy
🩺 Visitor Health Advice
Active visitors should limit outdoor activities. Stay indoors if you have respiratory issues.
Past 30 Days Trend
📅 Past 30 Days Trend
Real-time daily PM2.5 AQI
Live Data