# Contact: report an error or ask how a number was made

> Source: https://breathecheck.com/contact/
> Tell us a reading looks wrong, ask how a figure was calculated, or point out something we got wrong. Corrections are logged with dates.

# Tell us we got something wrong

The most useful message you can send is a number that looks wrong. We publish a reading, the station behind it and the gap between that station and the local sensors — if any of those does not match what you can see, we want to know which page and what you observed. Corrections get a dated entry in the log .

## Send a message

## What we can and cannot answer

We can tell you how any number on this site was produced — which monitor, which hour, which correction formula, and what we do not know. That is the whole point of the method page , and anything it fails to explain is a gap worth reporting.

We cannot give medical advice. Every threshold on this site is attributed to the EPA or to a named community source, and none of it is a substitute for someone who knows your history. If you are asking whether it is safe for you specifically to go outside, that is a question for a clinician, not for us.

We do not have a published mailing address yet, which is also why the alert emails are not sending — US law requires one in commercial email, and we would rather hold the feature than break the rule quietly.