NASAHourly daytime air quality observations from geostationary orbit over North America, measuring ozone, NO₂, HCHO, and aerosols at unprecedented spatial resolution.
NASA
NASA FIRMS: Active Fire & Thermal Anomaly Data
Back to Data CatalogNASA
NASA
NASA
The Fire Information for Resource Management System (FIRMS) distributes near real-time active fire data from NASA's MODIS (aboard Terra and Aqua) and VIIRS (aboard Suomi-NPP and NOAA-20) instruments. Fire detections are available within 3 hours of satellite overpass at 375-meter and 1-kilometer spatial resolution.
FIRMS data supports wildfire response, smoke forecasting, agricultural fire monitoring, and climate research. The system processes over 1 million fire detections per day during peak fire seasons and provides global coverage through the NASA Earthdata platform.
Learn more
Documentation, algorithm details, and background reading for FIRMS.
Download data
Access FIRMS through the provider portal or download it directly.
Tutorials
Self-paced tutorials to help you get started with FIRMS.
Getting started with FIRMS
An introduction to the FIRMS dataset — what it measures, how it is produced, and when to use it.
Accessing and downloading FIRMS dataFind, subset, and download FIRMS data, with tips for common file formats and access tools.
Exploring FIRMS in the AIR4US visualization toolLoad FIRMS layers in the AIR4US visualization tool and interpret them alongside other air quality data.
Cite this dataset
NASA GSFC. NASA FIRMS: Active Fire & Thermal Anomaly Data. 2000 – Present. Accessed via the AIR4US Portal, https://firms.modaps.eosdis.nasa.gov.
Related datasets
Other datasets in the catalog you can explore in the AIR4US visualization tool.
NASANASAVertical profiles of aerosol and cloud distributions from NASA's CALIPSO satellite, enabling 3D mapping of smoke, dust, and pollution layers at global scale since 2006.
NASAIntegrated aerosol optical depth and composition data from AERONET ground stations and multi-satellite retrievals, supporting air quality and long-term climate research.