by 
Liz
ANSWERS: 5
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Yes, but at extremely high temps.
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Every element has a "kindling temperature" albeit very high for helium.
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Helium is a noble gas. This means that it does not readily form chemical bonds with other atoms. When you write ignite, I assume that you mean burn, as in combustion. Because helium is so chemically inert, it will not do this because such a process would require the helium atoms to form bonds with other atoms. If you could somehow force the atoms to form such bonds, then the resultant compounds would be quite unstable.
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Helium, being a noble gas, is chemically inert, therefore it should not undergo combustion under normal conditions. It is considered a nonflammable gas. It is of note, however, that ignition generally requires oxygen (as it is how fire "breathes"). At even a high oxygen/helium ratio, the ignition temperature will be extraordinary. Ignition temperatures are generally not recorded for the inert (noble) gases.
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In reference to the period table Helium is one of the 7 noble gases therefore it is inert and cannot ignite under normal conditions.
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