Today | Weather | Monday, May 25, 2026

Weather in Napa, California

08:09 PM
Now
Cloudy Weather
61° F
Feels Like 55°
Precipitation 0 %
Wind 13 mph
UV Index (0 - 11+) 0
Humidity 70 %
Today
Cloudy Night
Day 64°
Night 50°
Precipitation 7 %
Wind 9 mph

Napa Weather Forecast Updated

2 minutes ago
Last updated on

Air Quality in Napa

NOW
45 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.15 µg/m³
PM10 6.74 µg/m³
O3 0.049 ppm
NO2 0.2 ppb
SO2 0.2 ppb
CO 0.10 ppm
NH3 0 µg/m³
NO 0 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)
PM2.52.15 µg/m³
PM106.74 µg/m³
O396.03 µg/m³
NO20.36 µg/m³
SO20.4 µg/m³
CO117.3 µg/m³
NH30 µg/m³
NO0 µg/m³