Selecting time periods less than 30 years may be helpful for certain applications, but are not necessarily indicative of climate change.
Entering 'por' into either box will display records as far back or forward as the records allow. ('por' stands for Period of Record)

Browse the climate thresholds used in the generation of the individual city reports. This will show which variables were used to develop the thresholds seen in the city reports.

Thank you for your interest in the Climate4Cities website. This site contains information that is intended to help communities better understand their local climate, both historic and projected, and explore potential strategies for climate-related planning. Although the data and information provided on the site can help support planning processes, it should not be solely relied on when developing plans or adaptation strategies.

Please keep in mind that the datasets used for the Historic Climate Data and Trends tool utilize near-real-time data which are preliminary in nature and sometimes contain errors. Although care is taken to remove known errors, it is possible that some data will change after final quality control steps. Additionally, two future scenarios are available within the Future Projections tool, which allow for comparisons of potential conditions. Please keep in mind that because these projections are dependent upon increases or decreases in greenhouse gas emissions, a range of conditions is possible.

For more information about how to utilize these tools and information, please contact us here.