Air Quality in Napa, United States
Clear
29.0°C · 45.3% humidity
29.0°
Feels 31.0°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Napa's air quality — share it
AQI Forecast
54
6am
54
54
17
9am
15
18
21
12pm
23
24
25
3pm
25
26
26
6pm
26
27
27
9pm
27
34
34
12am
34
54
54
3am
34
34
Air Quality Index Trend
45h · 21 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.
45.3%
Humidity
33.1 km/h
Wind W
1016.2 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
4.1 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Napa?
Temperature & Precipitation
PM2.5 Trend
45h · 21 stationsPM2.54.1 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
Station readings (1 station within 25 km)
4.1
Median
4.1
Average
4.1
Low
4.1
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +3.2
What is the 7-day forecast for Napa?
09-05
33.1° 15.9°
09-06
36.0° 14.8°
09-07
39.6° 11.5°
09-08
37.3° 13.1°
09-09
32.9° 14.4°
09-10
35.5° 11.3°
09-11
34.6° 15.6°
Both models agree
Avg diff: 4.9°C
Where are air quality stations near Napa?
What cities are near Napa?
Get AQI alerts for Napa
Notify me when air quality reaches:
Free · No account · Unsubscribe any time
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T16:39 UTC.