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AirNOW Air Quality

AirNOW Air Quality

Click image to view current layer on interactive map. Above static image does not reflect current conditions.

Tech & Sources

Software
GDAL, PostgreSQL/PostGIS, MapServer, Apache

Languages
SQL, Bash

Data Sources (one or more):
U.S. Geological Survey (USGS), U.S. Forest Service (USFS), National Elevation Data (NED), National Land Cover Data(NLCD), National Hydrography Data (NHD), Tiger/Line Census, 3D Elevation Program (3DEP), Geographic Names Information Service (GNIS), Open Street Map (OSM), Protected Areas Database v2.1 (PAD), National Interagency Fire Center (NIFC), National Weather Service (NWS), NASA, NOAA, National Wildfire Coordinating Group (NWCG), AirNOW.gov, U.S. Department of Interior (DOI), National Digital Forecast Database (NDFD), European Space Agency (ESA), USAFacts.org, ESRI, Google, Continental Divide Trail Coalition, Appalachian Trail Conservancy (ATC), National Snow and Ice Data Center (NSIDC), PRISM Climate Data Oregon State University, et al, and data collected in the field (trail trace)

Notes

Mulit-daily Bash script downloads AQI point vector data using wget and updates database. Point data is fed to gdal_grid using distance filter and creates polygons. The WMS/WMTS layer is served by Apache/MapServer as defined by the aqirast layer.

WMS Resource:
https://gis.postholer.com/services/reflect?
   layers=nlcdlite,aqirast,countylines,statelines,padLabels,trace,pop,milemarker
   &trail_id=2
   &t_srs=EPSG:3857
   &width=1024
   &bbox=-125,22,-66,50

Interactive map using WMTS:
https://www.postholer.com/google-map/Continental-Divide-Trail/2?
   vw=6
   &zoom=5
   &lat=39.395453
   &lon=-99.261307
   &aqirast=1

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