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Mosquito Counts
Published by City of Chicago · Updated 10/01/2026 · Daily
- Last updated
- 10/01/2026
- First published 07/09/2026
- Update frequency
- Daily
- Formats
- 3
- CSV, JSON, XML
- Coverage
- Chicago
- City in Illinois
About this dataset
Counts of mosquitoes by year, week, and species collected by the Chicago Department of Public Health (CDPH) Environmental Health program. CDPH maintains an environmental surveillance program primarily for monitoring West Nile Virus (WNV) but identifies and sorts all mosquitoes collected. Currently this dataset only contains data for Aedes albopictus but will expand to include additional species in the future.
Files and access
Links open the official government source
- CSV downloaddata.cityofchicago.orgCSV
- JSON (SODA API)data.cityofchicago.orgJSON
- XMLdata.cityofchicago.orgXML
API endpoint: https://data.cityofchicago.org/resource/gtpa-7bvk.json
Links open outside websites we do not control.
Frequently asked questions
- Who publishes Mosquito Counts?
- City of Chicago publishes this dataset on Chicago Data Portal.
- How often is it updated?
- The publisher lists the update frequency as daily. The last update was on 10/01/2026.
- How do I download it?
- It is available as CSV, JSON, XML. Use the links in Files and access, which open the official government source.
Similar data from other publishers
- Mosquito Trap SitesDistrict of Columbia · City of Washington, DCThese data represent mosquito trap site results in the District of Columbia from 2016 to 2018. Trap locations are considered approximate address and/or the “nearest” street address or block to the stated coordinates in the data. Visit Fight the Bite: ProtectinCSVGeoJSONShapefileKML+1Updated 12/08/2021
- Mosquito Trap SitesDistrict of Columbia · City of Washington, DCThese data represent mosquito trap site results in the District of Columbia from 2016 to 2018. Trap locations are considered approximate address and/or the “nearest” street address or block to the stated coordinates in the data. Visit Fight the Bite: ProtectinCSVGeoJSONKMLZIP+2Updated 12/08/2021
Where this catalog comes from
- Data.gov CatalogU.S. General Services Administration
- State and local open data portalsSocrata Discovery API
- State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
- Government ArcGIS Hub sitesCity and county GIS data
Catalog checked 10/30/2026
We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.
Source: Chicago Data Portal and Data.gov · Last updated 10/30/2026 · Listing only; the data stays with the publisher
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