Stay updated with real-time air quality in Gilroy, California featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
24
Good
Gilroy, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.58 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.59 μg/m³
0
55
155
255
425
605+
25.61 ppb
0
55
71
86
201
201+
0.78 ppb
0
36
76
186
605
1005+
4.50 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Gilroy, California
Gilroy, California
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AQI 44
Good
7.57μg/m³
PM2.5
32.37μg/m³
PM10
34.98ppb
O3
0.76ppb
SO2
3.92ppb
NO2
0.18ppm
CO
AQI 44
Good
7.87μg/m³
PM2.5
35.79μg/m³
PM10
27.87ppb
O3
0.73ppb
SO2
4.04ppb
NO2
0.20ppm
CO
AQI 38
Good
7.08μg/m³
PM2.5
33.68μg/m³
PM10
24.55ppb
O3
0.75ppb
SO2
3.95ppb
NO2
0.18ppm
CO
AQI 44
Good
7.73μg/m³
PM2.5
34.46μg/m³
PM10
22.67ppb
O3
0.75ppb
SO2
3.60ppb
NO2
0.20ppm
CO
AQI 19
Good
3.31μg/m³
PM2.5
14.33μg/m³
PM10
21.41ppb
O3
0.70ppb
SO2
3.80ppb
NO2
0.20ppm
CO
AQI 49
Good
8.56μg/m³
PM2.5
38.00μg/m³
PM10
21.28ppb
O3
0.75ppb
SO2
3.47ppb
NO2
0.20ppm
CO
Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Gilroy, California is updated every hour.
The worst air quality in Gilroy, California in the last 24 hours was observed at 04:00:00 on 2025-07-29.
In the last 24 hrs, the best air quality in Gilroy, California was observed at 03:00:00 on 2025-07-29.
The current air quality in Gilroy, California is 38, categorized as Good based on real-time data.
The most common pollutant in Gilroy, California is PM2.5.
If the air quality in Gilroy, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Gilroy, California is 6.808 μg/m3.
The current PM10 concentration at Gilroy, California is 29.972 μg/m3.
The current carbon monoxide (CO) concentration at Gilroy, California is 0.18 ppm.
The current sulfur dioxide (SO2) concentration at Gilroy, California is 0.759 ppb.
The current ozone (O3) concentration at Gilroy, California is 32.075 ppm.
The current nitrogen dioxide (NO2) concentration at Gilroy, California is 3.987 ppb.
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