There is no single heat level for Hatch chile. Because “Hatch” describes where the chile is grown — not one variety — its heat ranges from mild to hot depending on the cultivar and the growing season. Most Hatch green chile falls somewhere between roughly 1,000 and 8,000 Scoville Heat Units (SHU), spanning milder-than-jalapeño to about jalapeño-level heat.

If you’ve ever bought Hatch chile twice and found one batch mild and the next surprisingly spicy, this is why.

The Scoville scale, briefly

Heat is measured in Scoville Heat Units, which track the concentration of capsaicin — the compound responsible for the burn. For reference: a bell pepper is 0 SHU, a jalapeño is roughly 2,500–8,000 SHU, and a habanero runs 100,000+ SHU. Hatch green chile generally lives in the mild-to-medium band below the jalapeño’s upper range, though hotter cultivars overlap with and can exceed it.

Heat depends on the cultivar

The Hatch Valley grows many New Mexico pod-type cultivars, and they are bred to different heat targets. As a rough guide:

  • Mild cultivars produce gentle, family-friendly chile in the low thousands of SHU.
  • Medium cultivars deliver noticeable warmth in the mid-thousands.
  • Hot cultivars push toward and past jalapeño territory.

Producers often label Hatch chile simply as “mild,” “medium,” “hot,” or “extra hot” rather than by cultivar name, which is the most practical way to choose at point of sale. The NMSU Chile Pepper Institute maintains detailed data on the heat levels of specific New Mexico cultivars.

Heat also depends on the season

Even the same cultivar varies year to year. Capsaicin production rises with plant stress, so a hotter, drier growing season tends to yield hotter chile. The Hatch Valley’s intense summer heat is part of why its chile develops such pronounced character.

How to get the heat you want

  • Buy by label. Ask for mild, medium, or hot rather than assuming all Hatch chile is the same.
  • Taste before you commit. If you’re roasting a large batch, sample a pod first.
  • Tame the heat. Removing the seeds and inner membranes (where much of the capsaicin concentrates) reduces the burn; roasting and peeling mellows it further.

Whatever the heat level, what makes it Hatch chile is its Hatch Valley origin — verified, in the case of Certified Hatch, by documented sourcing back to the valley.

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