Ian Livingston

Information lead with two decades as a pro forecaster. Data journalist covering national and international weather and climate.

How to measure snow properly

Before you get started, find a good ruler. Then add snow.

By Ian Livingston and Jason Samenow

/ May 14 2026

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How to measure snow properly

DC can be a stormy place. Here's when.

Peak of the peak of season is about mid-June through July.

By Ian Livingston

/ May 10 2026

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DC can be a stormy place. Here's when.

Drought is a regular part of DC’s climate. Here are some of the biggest.

Droughts come and go every handful of years. Some have been quite intense.

By Ian Livingston

/ May 9 2026

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Drought is a regular part of DC’s climate. Here are some of the biggest.

How often tropical storms and hurricanes hit the DC region

The Mid-Atlantic sees remnants of tropical cyclones most years.

By Ian Livingston

/ May 7 2026

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How often tropical storms and hurricanes hit the DC region

DC’s climate, by the numbers: Temperature and precipitation trends

The city has toasty summers and moderate winters. It's also rather wet.

By Ian Livingston

/ Apr 29 2026

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DC’s climate, by the numbers: Temperature and precipitation trends

90-degree days in Washington, DC

DC averages right around 40 days per year in the 90s or higher.

By Ian Livingston

/ Apr 29 2026

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90-degree days in Washington, DC

Air quality in DC: What you need to know about pollution, risks and trends

A guide to air quality in the D.C. area, plus how it has changed.

By Jason Samenow and Ian Livingston

/ Apr 27 2026

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Air quality in DC: What you need to know about pollution, risks and trends

National Weather Service alert criteria for the DC region

What all those watches, warnings and advisories really mean.

By Ian Livingston

/ Apr 26 2026

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National Weather Service alert criteria for the DC region

How common are tornadoes in the D.C. area? A look at the region’s twister history

The region averages about 10 tornadoes per year, focused in summer.

By Ian Livingston

/ Apr 25 2026

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How common are tornadoes in the D.C. area? A look at the region’s twister history

How El Niño and La Niña affect snow in DC

When it comes to big winter snows, El Niños are generally considered king.

By Ian Livingston

/ Mar 29 2026

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How El Niño and La Niña affect snow in DC

DC’s winter cold is shrinking. The numbers show how

Winter is trending shorter and less cold over time, but there are still exceptions to the rule.

By Ian Livingston

/ Mar 28 2026

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DC’s winter cold is shrinking. The numbers show how

Here's how low wind chills get in DC winter

Washington's coldest annual wind chill is a little below zero.

By Ian Livingston

/ Mar 28 2026

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Here's how low wind chills get in DC winter