Air Quality in Napa, United States
Windy
28.5°C · 12.3% humidity
28.5°
Feels 28.5°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Napa's air quality — share it
AQI Forecast
25
2pm
25
25
22
5pm
27
27
27
8pm
27
25
25
11pm
25
25
25
2am
25
25
25
5am
25
25
25
8am
24
24
24
11am
24
24
Air Quality Index Trend
46h · 24 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.
12.3%
Humidity
70.8 km/h
Wind WSW
1012.3 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.3 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Napa?
Temperature & Precipitation
PM2.5 Trend
46h · 24 stationsPM2.55.3 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX6.9
High
Station readings (1 station within 25 km)
5.3
Median
5.3
Average
5.3
Low
5.3
High
PM2.5 µg/m³ · Model: 6.0 · Bias: +0.7
What is the 7-day forecast for Napa?
06-09
28.5° 9.0°
06-10
32.8° 13.1°
06-11
33.3° 17.5°
06-12
32.4° 13.9°
06-13
30.0° 8.4°
06-14
31.4° 15.4°
06-15
27.8° 9.4°
Both models agree
Avg diff: 5.3°C
Where are air quality stations near Napa?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T00:41 UTC.