Heat Advisory in D.C. Thursday, June 11, 2026: highs near 95°F and heat index up to 105°F. Find cooling centers and safety tips inside.

Showers and thunderstorms are likely Wednesday in D.C.; heavy downpours and gusts could slow commutes. A sharp heat spike follows Thursday–Friday with heat indices near 104°F.

A federal judge vacated IRS guidance that had blocked a long‑used 5% safe harbor, potentially reopening a path for Oregon wind and solar projects to claim federal tax credits ahead of a July 4 deadline.

Cloudy morning, highs near the low‑80s today. Heat spikes Thursday–Friday with a chance of strong storms and heat‑relief resources available.

NOAA forecasts a strong geomagnetic storm this week that could push auroras into as many as 20 U.S. states; clear, dark skies will be key.

Hot Sunday in DC with highs near 93°F and a few isolated afternoon showers. Gusty northwest winds and a Small Craft Advisory could affect boats and bridges.

DC Water warned nearly 5,000 upper Northwest D.C. customers to boil tap water Friday after a Fort Reno pumping‑station power loss.

Clear morning, then hot: highs near 95°F Saturday with gusty west winds and a slight chance of evening storms in northern suburbs.

New research shows wildfire smoke is eating into years of smog improvements, raising ozone and public‑health risks across the U.S. and straining monitoring systems. Experts say more sensors and better models are needed to protect communities.

A Code Orange air‑quality forecast covers parts of the D.C. region; officials warn sensitive groups to limit outdoor exertion and follow regional guidance.

A fleet of yellow-and-white 'Bob' buoys now stream live water-quality readings from the Potomac, Anacostia and Shenandoah to a public dashboard. The data show pH, temperature, turbidity and more.

Sunny Thursday with highs near 89°F and a warm weekend ahead. Expect low‑90s Friday–Saturday and a chance of storms late Saturday into Sunday.

Clear, sunny Wednesday in D.C. with a high near 83°F. Expect 90s by the weekend and a Coastal Flood Advisory around Annapolis this morning.