Air Quality Monitoring in an Urban Environment: A cityscape at dusk or dawn, with a predominantly orange and red sky filled with clouds. The atmosphere is hazy, suggesting an air quality monitoring system in place. In the foreground, several buildings are visible, including one on the right side of the street that appears to be taller than the others. A few cars can be seen driving down the street, adding to the sense of activity and movement. The overall impression is one of a bustling urban environment, with the hazy sky contributing to a sense of pollution or smog in the air.