I saw it on here a year or two ago. I tried searching for it? NEVER have any luck searching on this site!

I am looking for DA pres., VP, humidity, etc.

Thanks, Don

Try this not sure if its what you need http://www.dragtimes.com/ ( go to tools)

I use a phone app. weather bug. Doesnt have DA though.

Thanks pattyboy and plumbwired! Those are cool sites.

I am trying to find weather info for 11/15/15 @ 41 motorsports park.
Of course my Performaire PC weather station quit on me that day.

Kind of funny it was a week after I asked altronics about the program working with windows 10 on my new laptop.

I was using my old laptop and it wouldn't record runs anymore.

He said sure it will work, but you will have to pay a $100 upgrade fee!
Nice.
Don

There is a site with such info i will try to get the info,

I use intellicast. I can go to past observations on the site and record conditions in my log and figure DA from there using the Drag Times DA calculator after I get home.

Don,
On the dragtimes.com site go to tools, select air density calculator, enter the date you want to look at, select your track, click get weather data, then scroll down to look at the weather info for the time of day, then below there click on the get DA box.

http://www.dragtimes.com/da-density-alti...et+Weather+Data

Mike Gray

What I use, I have it favorited on my phone and note the DA when I get the slip.

Not perfect, but better than nothing

Thanks Mike that's what I'm looking for. Now I can put it in my logbook. And use for comparison.

I ran new best ET's so I wanted to know the DA.
Ran 9.087, previous best was 9.100.

Thanks everybody.
Don

Put one of these on your Christmas list, one of the best investments I have made.

http://kestrelmeters.com/products/kestrel-4250-racing-weather-tracker

You can buy direct from Kestrel or Summit & Jegs sell them. Around $259 for std. version and $349 for the Bluetooth model.

A weather station is the way to go. Those weather sites are just closest-airport data that updates hourly at best. That's not even close to being usable for predicting ET.