Air Quality in Gilroy, United States

Clear
26.7°C · 31.5% humidity
26.7°
Feels 26.7°
52
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast
27 3pm
27
27
52 6pm
52
47
63 9pm
61
59
57 12am
56
56
55 3am
55
55
54 6am
54
54
34 9am
34
27
27 12pm
27
27
AD 728×90

Air Quality Index Trend

45h · 40 stn

Gilroy's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

31.5%
Humidity
29.1 km/h
Wind SW
1010.9 hPa
Pressure
19.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
52
12.85 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Gilroy?

Temperature & Precipitation

PM2.5 Trend

45h · 40 stations
PM2.512.85 µg/m³ ✓ WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX19.9
Extreme
AD 300×250

What is the 7-day forecast for Gilroy?

08-03
28.7° 10.6°
08-04
25.3° 12.5°
08-05
33.4° 11.2°
08-06
30.5° 9.8°
08-07
25.4° 11.3°
08-08
28.4° 12.9°
08-09
33.9° 9.9°
Both models agree Avg diff: 3.5°C

Where are air quality stations near Gilroy?

38
Aromas School
14.5 km PM2.5: 9.0 µg/m³
37
San Juan Bautista
18.5 km PM2.5: 8.9 µg/m³
35
Watsonville - Starlight Elementary School
20.4 km PM2.5: 8.4 µg/m³
36
Hollister-Rancho San Justo Middle School
23.8 km PM2.5: 8.7 µg/m³
34
Hollister-Fairview Road, San Benito, California
25.7 km PM2.5: 8.2 µg/m³
32
Hollister-Fairview Road, San Benito, California
25.7 km PM2.5: 7.7 µg/m³
57
Hollister-Fairview Road, San Benito, California
25.7 km PM2.5: 15.0 µg/m³
40
Elkhorn Elementary School
26.8 km PM2.5: 9.5 µg/m³

What cities are near Gilroy?

27 Morgan Hill 54 Watsonville 34 Hollister 45 Prunedale 54 Live Oak 45 Salinas 54 Santa Cruz 54 Marina 63 Los Gatos 63 Campbell
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T01:02 UTC.