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)
69
Moderate
Gilroy, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
18.74 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
41.35 μg/m³
0
55
155
255
425
605+
5.81 ppb
0
55
71
86
201
201+
0.48 ppb
0
36
76
186
605
1005+
4.57 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Gilroy, California
Gilroy, California
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AQI 60
Moderate
13.52μg/m³
PM2.5
45.93μg/m³
PM10
3.68ppb
O3
0.47ppb
SO2
4.04ppb
NO2
0.32ppm
CO
AQI 69
Moderate
18.92μg/m³
PM2.5
57.36μg/m³
PM10
6.24ppb
O3
0.47ppb
SO2
3.96ppb
NO2
0.34ppm
CO
AQI 49
Good
8.86μg/m³
PM2.5
12.06μg/m³
PM10
5.17ppb
O3
0.45ppb
SO2
6.09ppb
NO2
0.33ppm
CO
AQI 52
Moderate
9.78μg/m³
PM2.5
40.68μg/m³
PM10
6.22ppb
O3
0.46ppb
SO2
5.90ppb
NO2
0.38ppm
CO
AQI 49
Good
9.48μg/m³
PM2.5
41.73μg/m³
PM10
4.08ppb
O3
0.49ppb
SO2
3.69ppb
NO2
0.31ppm
CO
AQI 54
Moderate
11.02μg/m³
PM2.5
48.28μg/m³
PM10
5.49ppb
O3
0.47ppb
SO2
6.00ppb
NO2
0.40ppm
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 08:00:00 on 2025-12-07.
In the last 24 hrs, the best air quality in Gilroy, California was observed at 08:00:00 on 2025-12-06.
The current air quality in Gilroy, California is 69, categorized as Moderate 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 18.742 μg/m3.
The current PM10 concentration at Gilroy, California is 41.348 μg/m3.
The current carbon monoxide (CO) concentration at Gilroy, California is 0.27 ppm.
The current sulfur dioxide (SO2) concentration at Gilroy, California is 0.485 ppb.
The current ozone (O3) concentration at Gilroy, California is 5.806 ppm.
The current nitrogen dioxide (NO2) concentration at Gilroy, California is 4.571 ppb.
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