Air Quality in Vacaville, United States
Windy
29.7°C · 21.8% humidity
29.7°
Feels 29.7°
61
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station
Nearby Monitoring Stations
Vacaville's air quality — share it
AQI Forecast
24
11am
24
24
61
2pm
51
43
38
5pm
35
32
32
8pm
31
37
36
11pm
55
35
35
2am
34
34
34
5am
27
25
25
8am
25
25
Air Quality Index Trend
46h · 48 stnVacaville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Vacaville is 3.4× the WHO annual guideline of 5 µg/m³.
21.8%
Humidity
55.1 km/h
Wind WNW
1015.0 hPa
Pressure
19.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
16.9 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Vacaville?
Temperature & Precipitation
PM2.5 Trend
46h · 48 stationsPM2.516.9 µg/m³
×1.1 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX19.9
Extreme
Station readings (1 station within 25 km)
16.9
Median
16.9
Average
16.9
Low
16.9
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -11.0
What is the 7-day forecast for Vacaville?
05-28
27.7° 8.3°
05-29
29.7° 13.0°
05-30
26.3° 16.5°
05-31
37.6° 20.0°
06-01
38.4° 19.4°
06-02
30.9° 14.2°
06-03
34.1° 6.8°
Both models agree
Avg diff: 4.9°C
Where are air quality stations near Vacaville?
76
Vacaville-Ulatis Drive, Solano, California
19
Davis-UCD Campus, Yolo, California
14
ANR Davis - 2nd Street
What cities are near Vacaville?
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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 2026-05-28T21:46 UTC.