Today | Weather | Tuesday, October 13, 2026
Active Weather Warnings

Weather in Napa, California

05:10 PM
Now
Sunny Weather
75° F
Feels Like 75°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 1
Humidity 15 %
Today
Sunny Weather
Day 79°
Night 43°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 4

Napa Weather Forecast Updated

38 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 13, 2025)
Rainy Weather

Day

63°

Night

50°

Wind

6 mph

Precipitation

100 %

Air Quality in Napa

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.54 µg/m³
PM10 11.74 µg/m³
O3 0.043 ppm
NO2 0.4 ppb
SO2 0.4 ppb
CO 0.12 ppm
NH3 0 µg/m³
NO 0.11 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 4.54 µg/m³
PM10 – 11.74 µg/m³
O3 – 84.3 µg/m³
NO2 – 0.76 µg/m³
SO2 – 0.98 µg/m³
CO – 136.92 µg/m³
NH3 – 0 µg/m³
NO – 0.11 µg/m³

Weather Alerts and Warnings for Napa

Minor Expected Likely

Coastal Flood Advisory

Coastal Flood Advisory issued October 13 at 2:36PM PDT until October 14 at 4:00PM PDT by NWS San Francisco CA
Oct 13, 2:36 PM → Oct 14, 4:00 PM
WHAT: Up to 0.8 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal waterways.

WHERE: Bayshore locations along the San Pablo Bay.

WHEN: Until 4 PM PDT Wednesday.

IMPACTS: Flooding of lots, parks, and roads with only
isolated road closures expected. High tides will result in
flooding along coastal trails, cut off access to some low-
lying beaches and coastal areas, and bring water and waves
farther up the beach than typical. Dangerous conditions are
forecast along the shoreline. Hazards include sneaker waves,
strong rip currents, and large breaking waves.

ADDITIONAL DETAILS: At the San Francisco tidal gauge, high tide
is expected to be 0.8 ft above normal (6.62 ft MLLW) at 1:46 PM
Wednesday 10/14. This prediction includes up to 0.9 ft of surge
that will enhance the astronomical tide and flooding threat.
High tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.
+ Read More
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Updated: Oct 13, 4:32 PM Source: NWS Alert