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Federal
Heating and Cooling Degree Day by State, 1958–2020 Versus 1895–1957
U.S. Environmental Protection Agency —
This indicator shows how heating and cooling degree days have changed by state, based on a comparison of the first 63 years of available data (1895–1957) with the... -
Federal
Our Nation's Air - annual air trends report, USA, EPA OAR OAQPS
U.S. Environmental Protection Agency —
Annual air trends report in the form of an interactive web application. The report features a suite of visualization tools that allow the user to: -Learn about air... -
Federal
Length of Growing Season, 1895–2020
U.S. Environmental Protection Agency —
This indicator looks at the impact of temperature on the length of the growing season in the contiguous 48 states, as well as trends in the timing of spring and fall... -
Federal
Average Rate of Heat-Related Hospitalizations in 23 States, 2001-2010
U.S. Environmental Protection Agency —
This map shows the 2001–2010 average rate of hospitalizations classified as “heat-related” by medical professionals in 23 states that participate in CDC’s... -
Federal
Change in Ice Thaw Dates for Selected U.S. Lakes, 1905-2019
U.S. Environmental Protection Agency —
This figure shows the change in the "ice-off" date, or date of ice thawing and breakup, for 14 U.S. lakes during the period from 1905 to 2019. All of the lakes have... -
Federal
Change in First Leaf and Bloom Dates Between 1951–1960 and 2011–2020
U.S. Environmental Protection Agency —
This indicator shows modeled trends in lilac and honeysuckle first leaf dates at weather stations across the contiguous 48 states. This map compares the average first... -
Federal
Change in Unusually Hot and Cold Temperatures in the Contiguous 48 States, 1948–2020
U.S. Environmental Protection Agency —
This map shows trends in unusually hot and cold temperatures at individual weather stations that have operated consistently since 1948. In this case, the term...