Stay updated with real-time air quality in TamalpaisHomestead Valley, 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)
31
Good
TamalpaisHomestead Valley, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.29 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.45 μg/m³
0
55
155
255
425
605+
33.70 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
1.13 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
TamalpaisHomestead Valley, California
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AQI 31
Good
2.29μg/m³
PM2.5
9.45μg/m³
PM10
33.70ppb
O3
0.33ppb
SO2
1.13ppb
NO2
0.30ppm
CO
AQI 31
Good
2.31μg/m³
PM2.5
9.49μg/m³
PM10
33.42ppb
O3
0.34ppb
SO2
1.07ppb
NO2
0.31ppm
CO
AQI 31
Good
2.39μg/m³
PM2.5
9.68μg/m³
PM10
32.66ppb
O3
0.34ppb
SO2
0.92ppb
NO2
0.31ppm
CO
AQI 30
Good
2.49μg/m³
PM2.5
9.99μg/m³
PM10
32.07ppb
O3
0.35ppb
SO2
0.81ppb
NO2
0.32ppm
CO
AQI 31
Good
2.41μg/m³
PM2.5
9.72μg/m³
PM10
32.54ppb
O3
0.34ppb
SO2
0.90ppb
NO2
0.32ppm
CO
AQI 33
Good
4.25μg/m³
PM2.5
18.38μg/m³
PM10
35.85ppb
O3
0.32ppb
SO2
2.03ppb
NO2
0.37ppm
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 Tamalpaishomestead Valley, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Tamalpaishomestead Valley, California was at its worst at 02:00:00 on 2026-03-07.
In the last 24 hours, the best air quality in Tamalpaishomestead Valley, California was observed at 12:00:00 on 2026-03-07.
As of now, the AQI in Tamalpaishomestead Valley, California is 31, indicating Good conditions.
Tamalpaishomestead Valley, California air has the highest levels of O3.
Poor air quality in Tamalpaishomestead Valley, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Tamalpaishomestead Valley, California are currently 2.291 μg/m3.
The PM10 concentration in Tamalpaishomestead Valley, California is 9.446 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Tamalpaishomestead Valley, California is 0.305 ppm.
Currently, Tamalpaishomestead Valley, California has a sulfur dioxide (SO2) concentration of 0.333 ppb.
The current ozone (O3) level in Tamalpaishomestead Valley, California at the moment is 33.699 ppm.
Nitrogen dioxide (NO2) level in Tamalpaishomestead Valley, California at the moment is 1.128 ppb.
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