Air Quality Purple Air Sensors

Dataset is comprised of hourly air quality data points captured from the District’s air monitoring network sites. The dataset is quality controlled by a process of field data verification and validation. The District of Columbia is providing this data for a rolling 1-year period. For complete real-time data, visit the EPA AirNow system at docs.airnowapi.org

Annual air quality data based on the parameters of CO, wind direction, humidity, NO2, O3, particulate matter, SO2

Monthly air quality data based on the parameters of CO, wind direction, humidity, NO2, O3, particulate matter, SO2.

Parking meter assets are used to manage and encourage turnover of curbside use on streets in Washington, DC. These assets are owned, operated, and maintained by the District Department of Transportation (DDOT), unless otherwise noted (e.g. meters on National Park Service property are maintained and owned by the National Park Service).

The true color orthoimages were acquired as part of the DC Geographic Information System (DC GIS) and captured at 15cm pixel resolution. A companion downloadable mosaic is available as a compressed MrSID format. The final orthophotography deliverable products for this project consist of 328 ortho tiles at a scale of 1 to 2400.

The true color orthoimages were acquired as part of the DC Geographic Information System (DC GIS) and captured at 20cm resolution. A companion downloadable mosaic is available as a compressed MrSID format.