Air Quality in Gilroy, United States

Windy
33.7°C · 14.4% humidity
33.7°
Feels 33.7°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast
27 11am
27
27
22 2pm
23
24
25 5pm
26
26
26 8pm
27
27
34 11pm
34
34
34 2am
34
34
34 5am
34
34
34 8am
34
27
AD 728×90

Air Quality Index Trend

46h · 37 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.

14.4%
Humidity
48.2 km/h
Wind SW
1006.1 hPa
Pressure
29.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
22
5.29 µg/m³
PM10▲
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Gilroy?

Temperature & Precipitation

PM2.5 Trend

46h · 37 stations
PM2.55.29 µg/m³ ✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX29.9
Extreme
AD 300×250
Station readings (3 stations within 25 km)
5.29
Median
5.3
Average
4.94
Low
5.54
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +4.7

What is the 7-day forecast for Gilroy?

07-21
33.7° 11.5°
07-22
35.7° 16.4°
07-23
29.3° 15.1°
07-24
35.6° 12.8°
07-25
30.8° 13.1°
07-26
32.9° 11.5°
07-27
32.5° 12.3°
Both models agree Avg diff: 4.9°C

Where are air quality stations near Gilroy?

25
Aromas School
14.5 km PM2.5: 6.0 µg/m³
23
San Juan Bautista
18.5 km PM2.5: 5.4 µg/m³
20
Watsonville - Starlight Elementary School
20.4 km PM2.5: 4.9 µg/m³
23
Hollister-Rancho San Justo Middle School
23.8 km PM2.5: 5.5 µg/m³
69
Hollister-Fairview Road, San Benito, California
25.7 km PM2.5: 20.7 µg/m³
28
Elkhorn Elementary School
26.8 km PM2.5: 6.8 µg/m³
32
Moss Landing
29.5 km PM2.5: 7.6 µg/m³

What cities are near Gilroy?

41 Morgan Hill 21 Watsonville 24 Hollister 23 Prunedale 27 Live Oak 25 Salinas 25 Santa Cruz 28 Marina 22 Los Gatos 23 Campbell
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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 2026-07-21T21:05 UTC.