The Chicago Park District maintains sensors in the water at beaches along Chicago's Lake Michigan lakefront. These sensors generally capture the indicated measurements hourly while the sensors are in operation during the summer. During other seasons and at some other times, information from the sensors may not be available. See https://data.cityofchicago.org/d/k7hf-8y75 for a dataset with land-based weather measurements at selected beaches. The sensor locations are listed at https://data.cityofchicago.org/d/g3ip-u8rb.

Please note that sensor locations change with the Park District’s operational needs, primarily related to water quality. For more information on beach operations, please see https://www.chicagoparkdistrict.com/parks-facilities/beaches.

Locations of Array of Things sensor nodes. For more information on the Array of Things project, see https://arrayofthings.github.io.

The Chicago Park District maintains weather sensors at beaches along Chicago's Lake Michigan lakefront. These sensors generally capture the indicated measurements hourly while the sensors are in operation during the summer. During other seasons and at some other times, information from the sensors may not be available. See https://data.cityofchicago.org/id/qmqz-2xku for a dataset with similar measurements on the lake water, itself. The sensor locations are listed at https://data.cityofchicago.org/d/g3ip-u8rb.

Historical availability of bicycles and docks to return bicycles at the Divvy stations (http://divvybikes.com/). For the current list of stations, see https://data.cityofchicago.org/d/bbyy-e7gq For real-time status of stations in machine-readable format, see https://feeds.divvybikes.com/stations/stations.json.

Due to a change in the data source, discussed at http://dev.cityofchicago.org/open%20data/data%20portal/2019/07/10/divvy-datasets-frozen.html, records between 7/7/2019 and 12/9/2019 are missing.

This dataset is historical-only. -- Results from a 2017-2018 project of City-installed sensors measuring water runoff from streets and sidewalks. These data can be used to measure the impact of sustainable green infrastructure on flooding. These sensors also captured weather data.

Each row corresponds to a sensor measurement at a specific time and location. Each row is a different sensor, which can be determined from the "Measurement Title" column. The value for each measurement is always numeric and available in the "Measurement Value" column. The corresponding unit of measurement is in the "Units" column. Data may be missing at times due to sensors not being available.

Locations of Array of Things sensor nodes. For more information on the Array of Things project, see https://arrayofthings.github.io.