This article explores how time interacts forcefully with the experience of living within toxic spaces. Through ethnographic research and interviews with residents of a contaminated town in Louisiana, the article unpacks the uncertain temporalities of industrial pollution and potential means of resistance. Putting Mbembe's (2003) postcolonial treatise on necropolitics in conversation with Nixon's (2011) work on slow violence, the article examines the racialized, uneven, and attritional experience of petrochemical pollution in a former plantation landscape. By exploring the necropolitics of place, the article reveals how unjust exposure to toxic chemicals creates contemporary “death-worlds” that are experienced in temporally uncertain and constricting ways. The oppressive nature of uncertain temporality makes the material assemblages of petrochemical infrastructure daily environmental concerns. Yet by focusing on the lived experience of communities inhabiting this toxic geography, the article notes how witnessing gradual changes to the local environment has become a barometer for perceiving chronic pollution. The idea of “slow observation” is posited as a useful counterpoint to slow violence and the permanent wounding of toxic pollution. Slow observation is an important aspect of living with sustained environmental brutality and offers a potential means of political resistance and doing undone environmental justice.