Occurred on June 28, 2023 / Pittsburgh, Pennsylvania, USA
Info from Licensor: "If the smoke from the wildfires in Canada is reaching Pittsburgh while it is in the red zone, it can have a significant impact on air quality in the area. When air quality is in the red zone, it indicates that the air is unhealthy and can pose a risk, particularly for sensitive groups such as people with respiratory issues, children, and the elderly."