Maryland Extreme Heat

Explore top MD risks:

Stagnant air undermines progress torward clear air in Baltimore and Washington D.C.

Explore the impacts of summer heat on U.S. cities.

Nearly 110,000 people living in Maryland are especially vulnerable to extreme heat.

Today, Maryland averages 10 days a year when heat exceeds dangerous levels. By 2050, the state is projected to experience 40 danger days a year.

Summers are getting muggier as the dewpoint temperature rises

Heat itself is one of the leading weather-related killers, and it’s also a significant contributing factor in creating ground-level ozone, which is a serious health hazard.

By 2050, the typical number of heat wave days in Maryland is projected to increase from more than 10 to 50 days a year. 

What's Happening with Extreme Heat?


Maryland: Rain Causes 82 Percent of All Sewage Overflows

Increasing heavy downpours, fueled by climate change, cause millions of gallons of sewage overflows nationwide.... More

North Carolina

Sinking Atlantic Coastline Meets Rapidly Rising Seas

New research using GPS and prehistoric data has shown that nearly the entire coast is affected, from Massachusetts to Florida and parts of Maine... More


Sea Level Rise Could Help Marshes Ease Flooding

Newly published modeling shows that a looming acceleration in sea level rise could further accelerate the spread of marshes worldwide... More


U.S. Airports Face Increasing Threat From Rising Seas

The threat isn't that sea level rise will gradually breach the defenses surrounding each airport. Instead, at least during the next few decades, scientists say that sea level rise will be more of an enabler of storm-surge flooding, making it easier for even minor storms to produce more damaging surges and flooding... More

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