Stay updated with real-time air quality in San Rafael, 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)
18
Good
San Rafael, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.35 μg/m³
0
55
155
255
425
605+
18.91 ppb
0
55
71
86
201
201+
0.61 ppb
0
36
76
186
605
1005+
10.04 ppb
0
54
101
361
1250
2050+
0.40 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
San Rafael, California
San Rafael, California
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AQI 17
Good
3.09μg/m³
PM2.5
13.19μg/m³
PM10
17.97ppb
O3
0.62ppb
SO2
11.84ppb
NO2
0.49ppm
CO
AQI 17
Good
3.26μg/m³
PM2.5
13.96μg/m³
PM10
18.00ppb
O3
0.61ppb
SO2
11.87ppb
NO2
0.49ppm
CO
AQI 22
Good
4.31μg/m³
PM2.5
18.76μg/m³
PM10
18.21ppb
O3
0.61ppb
SO2
12.06ppb
NO2
0.48ppm
CO
AQI 27
Good
4.70μg/m³
PM2.5
20.56μg/m³
PM10
18.31ppb
O3
0.61ppb
SO2
12.13ppb
NO2
0.47ppm
CO
AQI 33
Good
6.48μg/m³
PM2.5
25.89μg/m³
PM10
22.51ppb
O3
0.66ppb
SO2
7.45ppb
NO2
0.47ppm
CO
AQI 38
Good
7.44μg/m³
PM2.5
33.15μg/m³
PM10
14.87ppb
O3
0.63ppb
SO2
13.60ppb
NO2
0.41ppm
CO
Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for San Rafael, California is updated every hour for accuracy.
In the past 24 hours, the air quality in San Rafael, California was at its worst at 07:00:00 on 2025-10-23.
In the last 24 hours, the best air quality in San Rafael, California was observed at 02:00:00 on 2025-10-23.
As of now, the AQI in San Rafael, California is 18, indicating Good conditions.
San Rafael, California air has the highest levels of O3.
Poor air quality in San Rafael, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in San Rafael, California are currently 2.276 μg/m3.
The PM10 concentration in San Rafael, California is 9.352 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in San Rafael, California is 0.401 ppm.
Currently, San Rafael, California has a sulfur dioxide (SO2) concentration of 0.607 ppb.
The current ozone (O3) level in San Rafael, California at the moment is 18.909 ppm.
Nitrogen dioxide (NO2) level in San Rafael, California at the moment is 10.043 ppb.
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