I suppose that depends on what the definition of IS, is!
The Herald was quoting
THIS PRESS RELEASE from NH DES
The DES issued
THIS AS A FOLLOW UP.
Moderate vs Unhealthy. It seems to me that in the initial press release the state meant to say unhealthy for sensitive groups, but instead just issued a warning of unhealthy.
Now the question is what is an "unusually sensitive person"? Someone with respiratory problems? The state site really isn't clear.