During the Independence Day celebrations, the level of fine particulate matter in Washington, D.C. reached levels typically observed at this time of year. These elevated levels persisted until Sunday morning, as reported by the Environmental Protection Agency (EPA).

Photos captured by Eric Lee from Reuters show fireworks in Washington, D.C., obscured by smoke as rain fell. The images provide a view from Arlington, Virginia.

According to data from AirNow, a platform managed by the EPA for tracking air quality through physical sensors, the air quality in Washington, D.C. remained unhealthy for over 10 hours following the 40-minute fireworks display over the National Mall.