Safety
I am a wildland firefighter. I wanted an app I could use to quickly calculate the heat index given temperature and RH- without a signal, which I often do not have. This is that app. I am not sure what the negative reviews are for. If you want to quickly know the current heat index for the safety or protection of your crew, job site, or just working in the yard somewhere that the heat index really matters, this is what you want.
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OSHA Heat Safety Tool