Poblano peppers are generally mild in heat, making them suitable for a wide range of palates. They have a Scoville Heat Unit (SHU) rating of 1,000 to 2,000, which is significantly lower than the heat level of jalapeño peppers, which range from 2,500 to 8,000 SHU. Poblanos are known for their rich and earthy flavor, and while they have a mild spiciness, they are not considered hot compared to many other chili peppers.