1. Los Carneros

Overview: Napa’s classic cool-zone for Pinot Noir, Chardonnay, and sparkling wine.

Terroir and climate:

• Soil: Clay-rich loams supporting aromatic detail and structure.
• Climate: Fog and breezes from San Pablo Bay slow ripening and preserve acidity.

Main wines:

• Pinot Noir: red fruit, earthy undertones, refined tannins.
• Chardonnay: citrus, green apple, often a touch of vanilla/oak.

Notable estates:

• Domaine Carneros
• Saintsbury
• Truchard Vineyards
• Etude Wines

2. Oakville

Overview: A powerhouse for structured, age-worthy Cabernet Sauvignon.

Terroir and climate:

• Soil: Gravelly, well-drained alluvium encouraging deep roots and concentration.
• Climate: Warm days with cooling nights for balanced ripeness.

Main wines:

• Cabernet Sauvignon: black fruit, tobacco, spice, bold tannins.

Notable estates:

• Opus One
• Screaming Eagle
• Silver Oak
• Far Niente

3. Stags Leap District

Overview: Famous for Cabernet that balances power and finesse—ripe fruit with polished texture.

Terroir and climate:

• Soil: Volcanic and rocky soils improving drainage and concentration.
• Climate: Warm days, cool evening airflow maintaining freshness.

Main wines:

• Cabernet Sauvignon: blackcurrant, cherry, cedar; refined tannins.

Notable estates:

• Stag's Leap Wine Cellars
• Shafer Vineyards
• Clos Du Val
• Baldacci Family Vineyards

4. Rutherford

Overview: Classic Cabernet territory—often associated with the famed “Rutherford dust” character.

Terroir and climate:

• Soil: Deep, well-drained alluvial soils adding structure and detail.
• Climate: Warm days and cool nights for balanced ripeness.

Main wines:

• Cabernet Sauvignon: earthy blackberry, cassis, spice.

Notable estates:

• Inglenook
• Caymus Vineyards
• Beaulieu Vineyard
• Frog’s Leap Winery

5. Yountville

Overview: Balanced reds with freshness—cooler airflow and steady temperatures support refined structure.

Terroir and climate:

• Soil: Alluvial soils with gravelly components enhancing drainage.
• Climate: Bay influence moderates heat; longer season supports elegance.

Main wines:

• Cabernet Sauvignon: black fruit, cedar, velvety tannins.
• Merlot: plum, cherry, mocha nuances.

Notable estates:

• Dominus Estate
• Cliff Lede Vineyards
• Hestan Vineyards
• Keever Vineyards

Napa Valley (Parent AVA)

Overview: The overarching AVA encompassing all nested AVAs—fog-to-sun gradients, valley-floor warmth, and mountain elevations.

Main wines:

• Cabernet Sauvignon: flagship style—black fruit, spice, structure.
• Chardonnay: citrus to stone fruit, often with a creamy texture.
• Merlot: plush red fruit, cocoa notes.