Stay updated with real-time air quality in Alameda, 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)
33
Good
Alameda, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.12 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.48 μg/m³
0
55
155
255
425
605+
13.59 ppb
0
55
71
86
201
201+
0.34 ppb
0
36
76
186
605
1005+
8.55 ppb
0
54
101
361
1250
2050+
0.42 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Alameda, California
Alameda, California
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AQI 27
Good
4.75μg/m³
PM2.5
20.62μg/m³
PM10
16.57ppb
O3
0.74ppb
SO2
7.40ppb
NO2
0.42ppm
CO
AQI 33
Good
5.52μg/m³
PM2.5
24.05μg/m³
PM10
16.28ppb
O3
0.73ppb
SO2
8.16ppb
NO2
0.48ppm
CO
AQI 27
Good
4.87μg/m³
PM2.5
21.27μg/m³
PM10
17.02ppb
O3
0.74ppb
SO2
6.92ppb
NO2
0.39ppm
CO
AQI 33
Good
5.75μg/m³
PM2.5
25.60μg/m³
PM10
16.50ppb
O3
0.73ppb
SO2
6.82ppb
NO2
0.35ppm
CO
AQI 33
Good
5.80μg/m³
PM2.5
25.94μg/m³
PM10
16.66ppb
O3
0.73ppb
SO2
6.44ppb
NO2
0.31ppm
CO
AQI 27
Good
4.76μg/m³
PM2.5
21.45μg/m³
PM10
26.87ppb
O3
0.76ppb
SO2
5.71ppb
NO2
0.33ppm
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 Alameda, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Alameda, California was at its worst at 05:00:00 on 2025-07-10.
In the last 24 hours, the best air quality in Alameda, California was observed at 02:00:00 on 2025-07-10.
As of now, the AQI in Alameda, California is 27, indicating Good conditions.
Alameda, California air has the highest levels of PM2.5.
Poor air quality in Alameda, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Alameda, California are currently 4.767 μg/m3.
The PM10 concentration in Alameda, California is 21.216 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Alameda, California is 0.347 ppm.
Currently, Alameda, California has a sulfur dioxide (SO2) concentration of 0.788 ppb.
The current ozone (O3) level in Alameda, California at the moment is 20.341 ppm.
Nitrogen dioxide (NO2) level in Alameda, California at the moment is 5.931 ppb.
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