Air Quality in Napa, United States
Clear
37.5°C · 10.0% humidity
37.5°
Feels 37.5°
27
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Napa's air quality — share it
AQI Forecast
27
8am
27
27
27
11am
27
27
27
2pm
27
27
27
5pm
27
27
27
8pm
27
27
34
11pm
34
34
34
2am
34
27
27
5am
27
27
Air Quality Index Trend
46h · 17 stnNapa's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
10.0%
Humidity
13.8 km/h
Wind SW
1007.5 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.5 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Napa?
Temperature & Precipitation
PM2.5 Trend
46h · 17 stationsPM2.56.5 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX24.9
Extreme
What is the 7-day forecast for Napa?
07-21
37.5° 12.0°
07-22
39.8° 14.7°
07-23
35.7° 14.9°
07-24
42.3° 12.5°
07-25
34.8° 15.2°
07-26
41.8° 8.9°
07-27
40.3° 14.2°
Both models agree
Avg diff: 6.5°C
Where are air quality stations near Napa?
What cities are near Napa?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T18:28 UTC.