Napa Weather Forecast
Napa weather: 54°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for Napa
Derived from the current forecast window - not an official warning.
16 dry days, 3 days above 90°F and humidity at 94%. Hot, dry and windy together is what drives fire spread.
Clear air overhead right now. Aerosol readings cannot separate wildfire smoke from dust, so treat this as a haze signal, not a fire confirmation.
Air quality and pollen in Napa
Air quality: Open-Meteo (CAMS). US AQI scale.
Health and safety today
| Skin and UV | No protection needed for most skin types. |
|---|---|
| General | Conditions are comfortable for most people, including children and older adults, with normal clothing. |
Active alerts for Napa
Derived from the forecast. No official alert feed is wired for this country yet.
See the Napa forecast by time range
Napa weather - more answers
Explore Napa
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Napa?
Napa is a city in California. Its coordinates are 38.2975, -122.2869. It lies in North America.
What is the weather like in Napa right now?
It is currently 54°F (12°C) with overcast. Humidity is 94% and wind is 2 mph.
When is the best time to visit Napa?
May, June, July, August and September offer the most comfortable conditions in Napa, which has a Mediterranean climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Napa in?
Napa observes America/Los_Angeles (UTC-07:00). The local time is 5:31 AM.
How many people live in Napa?
Napa has a population of approximately 80.000.
What is the nearest airport to Napa?
The closest airports are San Francisco International Airport (SFO), 47 mi away.
What are the top things to do in Napa?
Popular options include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve, Emerald Bay State Park, Lake Tahoe and Pinnacles National Park.
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| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 26, 2026 at 5:31 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
