Washington, D.C.

Washington D.C. to Enjoy Sunny 4th of July, NWS Cautions on Air Quality for Sensitive Groups

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Published on July 04, 2025
Washington D.C. to Enjoy Sunny 4th of July, NWS Cautions on Air Quality for Sensitive GroupsSource: Google Street View

The National Weather Service (NWS) in Washington, D.C., has provided a fairly optimistic forecast for residents looking to celebrate Independence Day under the sun. According to their latest update, which was released early this morning, the 4th of July is expected to be sunny with a comfortable high of around 87 degrees. The evening is set to remain clear with the temperature gently dipping to a low of around 66 degrees. For those enjoying the outdoors, the winds are predicted to be calm, subtly shifting to a northern direction at about 6 mph in the afternoon.

However, the warm and sunny weekend comes with a caveat. The NWS has issued an Air Quality Alert for today. The Metropolitan Washington Council of Governments, alongside the District Department of Environment, warns of a Code Orange Air Quality Alert that enunciates the presence of pollution levels that could potentially be unhealthy for sensitive groups. These groups include children, individuals with asthma, heart disease, or other lung diseases, and the elderly. The notice advises minimizing strenuous activity or exercise outdoors to reduce the effects of air pollution.

As the weekend progresses, the skies are to mostly keep their clear hue with sunny conditions expected on Saturday and a high nearing 89 degrees. The following nights will see temperatures hover in the upper 60s, providing some reprieve from the heat of the day. By Sunday, the mercury will climb slightly higher, with a forecasted high near 91 degrees, while the night brings partly cloudy skies and a low around 73 degrees, as detailed by the National Weather Service.

Looking into the coming week, the forecast includes a 30% chance of showers and thunderstorms after 2 pm on Monday. Despite the potential for precipitation, the day should remain partly sunny with highs staying close to 91 degrees. The chance of rain persists through the evening, but eases up a bit before 8 pm, ushering in a partly cloudy night with lows settling around 74. The pattern seems to repeat nearly on Tuesday and Wednesday, with somewhat higher precipitation probabilities, especially on Thursday when showers and possibly a thunderstorm are likely. The NWS predicts a 60% chance of rain for that day.

For those concerned about airborne allergens and pollutants, or just interested in the detailed forecast for the Capital, further information is available on ground-level ozone and fine particles at the Metropolitan Washington Council of Governments' website.