SPX Q chart
Note the RSI high in 2014 Q4, 2015 Q1 and 2015 Q2 with 3 closes 75.4-75.8. The quarterly bar is not even half done but RSI at 75.6 means testing the highs since the 1990s. RSI can go significantly higher evidenced by 1998 Q1 high at 95 (!!!), but for now clearing the 75 would be a sign of strength in the market.

SPX M
RSI for Jan closed at 68.08 and currently 69.06; like 75 area on quarterly chart, clearing 70 without selling pressure would be a sign of strength. Moves that stop at 70 and see selling - notably 5/2015 for example, or 3/2000 - can be more bearish.

NDX Q
2015 RSI highs were 80-81, and now back at 79.5.

NDX M
Like SPX, approaching 70 area. Above would be sign of strength, selling here more like 4/2011 or 3/2012.

INDU Q
RSI reaching above 73.6 means highest RSI since the 90s, so far a sign of strength.

INDU M
Despite January's near doji bar with RSI at 70.5 and top of the monthly BB, so far February up! RSI higher and pushing the band.

RUT Q
RSI currently 70.17 after closing 2016 Q4 at 69.44. Sign of strength to be over 70 but we could still see a selling reaction from this area.

RUT M
Not as high as the others and still a ways from 70.