Saturday, July 4, 2026 came in blazing for Baltimore, starting off hot and swampy with morning temperatures already in the upper 80s and a forecast high near 102°F. The National Weather Service has an Extreme Heat Warning in place from 10 a.m. to 9 p.m., and heat index values could top out around 111°F, high enough to make extended time outside risky without serious precautions.
Afternoon Storms Could Crash the Fireworks Party
Scattered showers and thunderstorms are expected to fire up after about 2 p.m., with the main window for trouble running from late afternoon into early evening. According to the National Weather Service Baltimore/Washington, the region sits in an Enhanced Risk for severe thunderstorms, and any storm that pops could deliver damaging wind gusts and frequent lightning. If you have outdoor plans or fireworks viewing on the schedule, line up an indoor backup and keep an eye on watches and warnings before heading out.
Evening and Weekend Flooding Risk
Storm chances stick around into tonight with a steamy low near 77°F, and repeated rounds of showers and thunderstorms are on tap Sunday into Monday. Some of these storms are expected to dump 1 to 2 inches of rain in a short burst, which raises a localized flash-flood threat for low-lying streets and urban neighborhoods. Avoid driving through flooded roads, and be ready for possible power outages where the strongest gusts and heaviest downpours hit.
Air Quality and City Response
Heat is not the only issue. The Maryland Department of the Environment has issued a Code Orange Air Quality Alert for the Baltimore metro area, meaning people in sensitive groups should cut back on heavy outdoor activity. Baltimore declared a Code Red heat emergency earlier in the week and opened cooling resources, and for background and links to city guidance you can check our earlier coverage. For more detail on the local response, broils as 102-degree blast bears down covers the city's heat measures and services.
How to Stay Safe
Drink plenty of water, stick to air-conditioned spaces when you can, and keep strenuous outdoor plans to a minimum from mid-morning through early evening, when the heat is at its worst. Never leave children or pets in parked cars, check in on older neighbors, and move activities inside if you hear thunder nearby, since lightning can strike even before the rain starts. If someone shows signs of heat exhaustion or heat stroke, call 911 and start cooling them down right away.
