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Mosquito Counts

Published by data.cityofchicago.org | City of Chicago | Catalog Last Checked: July 14, 2026 at 10:14 PM | Dataset Last Updated: July 10, 2026
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.

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