Question: how spicy are jalapeno peppers?
Answer: How Hot Are Jalapeños? Jalapeño peppers measure 2,500–8,000 on the Scoville scale, with a similar heat range as Fresno peppers (2,500–10,000 Scoville Heat Units) and a lot more spice than poblano (1,000–1,500 SHU) and bell peppers (0 SHU).