Stay updated with real-time air quality in Larkspur, 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)
23
Good
Larkspur, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.25 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.73 μg/m³
0
55
155
255
425
605+
25.07 ppb
0
55
71
86
201
201+
1.00 ppb
0
36
76
186
605
1005+
2.60 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Larkspur, California
Larkspur, California
Scroll To Air Quality MapLoading...
AQI 27
Good
4.59μg/m³
PM2.5
19.89μg/m³
PM10
26.18ppb
O3
1.03ppb
SO2
2.59ppb
NO2
0.24ppm
CO
AQI 22
Good
2.13μg/m³
PM2.5
8.59μg/m³
PM10
24.11ppb
O3
0.98ppb
SO2
2.60ppb
NO2
0.20ppm
CO
AQI 23
Good
3.02μg/m³
PM2.5
12.72μg/m³
PM10
24.89ppb
O3
1.00ppb
SO2
2.60ppb
NO2
0.22ppm
CO
AQI 27
Good
5.08μg/m³
PM2.5
22.11μg/m³
PM10
26.58ppb
O3
1.04ppb
SO2
2.59ppb
NO2
0.25ppm
CO
AQI 56
Moderate
12.36μg/m³
PM2.5
55.85μg/m³
PM10
33.72ppb
O3
1.28ppb
SO2
2.64ppb
NO2
0.31ppm
CO
AQI 56
Moderate
12.31μg/m³
PM2.5
55.62μg/m³
PM10
33.81ppb
O3
1.27ppb
SO2
2.60ppb
NO2
0.31ppm
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 Larkspur, California is updated every hour.
The worst air quality in Larkspur, California in the last 24 hours was observed at 06:00:00 on 2025-06-06.
In the last 24 hrs, the best air quality in Larkspur, California was observed at 03:00:00 on 2025-06-06.
The current air quality in Larkspur, California is 23, categorized as Good based on real-time data.
The most common pollutant in Larkspur, California is O3.
If the air quality in Larkspur, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Larkspur, California is 3.247 μg/m3.
The current PM10 concentration at Larkspur, California is 13.733 μg/m3.
The current carbon monoxide (CO) concentration at Larkspur, California is 0.22 ppm.
The current sulfur dioxide (SO2) concentration at Larkspur, California is 1.002 ppb.
The current ozone (O3) concentration at Larkspur, California is 25.074 ppm.
The current nitrogen dioxide (NO2) concentration at Larkspur, California is 2.597 ppb.
All Rights Reserved © Ambee Inc. 2025