Arduino and sensors

Hi

I am planning on using the following tutorial to build a system with a range of sensors, that sends the data to online storage.

https://learn.sparkfun.com/tutorials/in … -xbee-wifi

I need to use the following sensors:

Temp

Tilt (for a window)

Humidity

CO2

Nitrous Oxide

Sulphur Oxide

Air flow through a room.

Sparkfun sells sensor for Temp and Tilt.

Can anyone recommend sensors for the remainder which will be compatible with the project? Also, how difficult will it be to add to the code so that the system logs all of this data (I am new to arduino).

Thankyou

AndrewUOD:
Also, how difficult will it be to add to the code so that the system logs all of this data (I am new to arduino).

Sparkfun sells a microSD shield for Arduino that makes logging fairly trivial. Adafruit sells one that also includes an RTC if time is important.