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)
38
Good
TamalpaisHomestead Valley, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.09 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.59 μg/m³
0
55
155
255
425
605+
22.30 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
1.58 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
TamalpaisHomestead Valley, California
TamalpaisHomestead Valley, California
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AQI 38
Good
7.48μg/m³
PM2.5
33.23μg/m³
PM10
24.02ppb
O3
0.60ppb
SO2
1.67ppb
NO2
0.34ppm
CO
AQI 38
Good
6.84μg/m³
PM2.5
30.48μg/m³
PM10
23.85ppb
O3
0.60ppb
SO2
1.57ppb
NO2
0.33ppm
CO
AQI 27
Good
5.08μg/m³
PM2.5
22.84μg/m³
PM10
23.38ppb
O3
0.61ppb
SO2
1.31ppb
NO2
0.32ppm
CO
AQI 22
Good
3.66μg/m³
PM2.5
16.69μg/m³
PM10
23.04ppb
O3
0.62ppb
SO2
1.12ppb
NO2
0.30ppm
CO
AQI 27
Good
4.82μg/m³
PM2.5
21.71μg/m³
PM10
23.31ppb
O3
0.62ppb
SO2
1.27ppb
NO2
0.32ppm
CO
AQI 33
Good
5.76μg/m³
PM2.5
25.48μg/m³
PM10
24.18ppb
O3
0.53ppb
SO2
1.69ppb
NO2
0.13ppm
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 03:00:00 on 2026-08-08.
In the last 24 hours, the best air quality in Tamalpaishomestead Valley, California was observed at 04:00:00 on 2026-08-08.
As of now, the AQI in Tamalpaishomestead Valley, California is 38, indicating Good conditions.
Tamalpaishomestead Valley, California air has the highest levels of PM2.5.
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 7.478 μg/m3.
The PM10 concentration in Tamalpaishomestead Valley, California is 33.229 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Tamalpaishomestead Valley, California is 0.335 ppm.
Currently, Tamalpaishomestead Valley, California has a sulfur dioxide (SO2) concentration of 0.6 ppb.
The current ozone (O3) level in Tamalpaishomestead Valley, California at the moment is 24.022 ppm.
Nitrogen dioxide (NO2) level in Tamalpaishomestead Valley, California at the moment is 1.666 ppb.
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