GeoTIFF / NetCDF
Global PM2.5 Surface Concentration (WashU)
Washington University's annual global PM2.5 surface concentration estimates at 1km resolution from 2000-present.
Air quality monitoring Health impact assessment
Air quality
Air Quality & Atmospheric Data
Global air pollution, atmospheric composition, and greenhouse gas datasets including PM2.5, NO2, SO2, and CO measurements from satellites and models.
PM2.5 Air pollution NO2 Ozone Atmospheric composition
Downloadable datasets in this category
3
Each dataset page captures official source links, access notes, and related GIS workflows.
Official sources and direct access
Mixed delivery
Pages combine official portals, direct downloads, and task-focused usage guidance in one canonical URL.
GEO coverage
Task-first content
Intros, FAQs, and workflows are written to answer real “where do I download…” searches.
Air quality pages help GIS users access global and regional air pollution data for health research, environmental monitoring, and policy analysis.
The category spans ground-level PM2.5 estimates, satellite-retrieved trace gases, and reanalysis atmospheric composition data.
Downloadable datasets in this category
Category directory
Category pages aggregate the most useful entry points first, then push visitors into detailed dataset pages with richer steps and FAQ sections.
NetCDF / GeoTIFF
Sentinel-5P TROPOMI Air Pollutants
ESA Sentinel-5P TROPOMI satellite measurements of NO2, SO2, CO, O3, and formaldehyde at 3.5-7km resolution.
Urban air pollution monitoring Industrial emission detection
NetCDF / GRIB
CAMS Global Atmospheric Composition
Copernicus Atmosphere Monitoring Service global reanalysis and forecast of atmospheric composition at ~80km resolution.
Air quality forecasting Aerosol monitoring
Recommended air quality workflow
How to choose a source
- Start with the Global PM2.5 surface concentration dataset for long-term ground-level particulate matter estimates.
- Use Sentinel-5P TROPOMI data via Copernicus Data Space for NO2, SO2, CO, and O3 column measurements.
- Use CAMS reanalysis for global atmospheric composition with multi-pollutant coverage.
- Combine air quality data with population grids for health exposure analysis.
Category FAQ
Category FAQ
What is the best free global PM2.5 dataset?
The Global PM2.5 Surface Concentration dataset from Washington University provides annual ground-level PM2.5 estimates at 1km resolution from 2000 to present, combining satellite, model, and monitor data.
Can I get real-time air quality satellite data?
Yes. ESA's Sentinel-5P TROPOMI provides daily global measurements of NO2, SO2, CO, O3, and formaldehyde, available through the Copernicus Data Space and Google Earth Engine.