Contact & corrections

Questions, or think a figure is wrong? We’d like to hear about it.

Reporting a data problem

Please include the page address, the figure you think is wrong and, if possible, where you saw a different value. We check reports against EPA’s source files. If EPA’s data itself is wrong, the monitoring agency for that state is the place to correct it; we will update once EPA publishes revised files.

We cannot answer questions about personal health. For current air conditions, see AirNow.