Why not 'Google" for a meteorololgy site. Or contact the weather person at you local TV station.

HAHAHAHAHAHA. Local weather persons just love these calls. What makes you think some weather geek in, say, Albany, NY, knows about the RH in Madagascar? Listen, no offense, please, no offense, but TV/Radio people are not "private forecasters" for anyone who calls, that's not their job. Depending on the size of your market, a TV weather person might not even take your call. A rule of thumb - the larger the market, the less likely you'll get to speak with anyone in the weather department.

With the internet at your fingertips, have at it, do a little work, you should be able to find this info without too much trouble. The amount of weather info on the net is enormous, huge, more than you'll ever need.

FWIW, RH is often enough meaningless. The true indicator of moisture in the air is the dewpoint temperature. The dewpoint never lies, regardless of ambient air temperature, dewpoint will always tell you how moist the air is. Cheers...

There are 2 possibilities for you here Humid, Hopefully you'll find that edge we all can not but this is about the best you'll get on the net.

If the primary goal of this post is to find the means to achieve the proper rh for a particular plant or group of plants, I suggest posting in the species-specific forums here on Gardenweb.com.. Humid loving plants usually fall under tropicals... A fine forum.

Now, to answer youre question in a non-internet-message-board type manner... click this link and grab your bifocals boss.

Encyclopedia=Those dusty books that haven't been touched by human hands since 1996..LOL gotta love the 'net!

Here is a link that might be useful: madagascar and BEYOND!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

http://forums.gardenweb.com/forums/regional/

this is the regional specific forums, might also help.
same address in the link below.

peace
LS

Here is a link that might be useful: GW regional forums