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
6.45 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.56 μg/m³
0
55
155
255
425
605+
16.08 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
6.37 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Alameda, California
Alameda, California
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AQI 16
Good
3.39μg/m³
PM2.5
14.69μg/m³
PM10
17.39ppb
O3
0.52ppb
SO2
2.02ppb
NO2
0.31ppm
CO
AQI 22
Good
4.30μg/m³
PM2.5
18.44μg/m³
PM10
16.92ppb
O3
0.52ppb
SO2
1.74ppb
NO2
0.54ppm
CO
AQI 22
Good
3.98μg/m³
PM2.5
17.42μg/m³
PM10
17.11ppb
O3
0.52ppb
SO2
1.96ppb
NO2
0.35ppm
CO
AQI 38
Good
7.16μg/m³
PM2.5
31.53μg/m³
PM10
16.69ppb
O3
0.51ppb
SO2
2.36ppb
NO2
0.57ppm
CO
AQI 44
Good
7.82μg/m³
PM2.5
34.53μg/m³
PM10
16.66ppb
O3
0.51ppb
SO2
2.47ppb
NO2
0.59ppm
CO
AQI 22
Good
4.07μg/m³
PM2.5
19.57μg/m³
PM10
17.04ppb
O3
0.53ppb
SO2
0.72ppb
NO2
0.31ppm
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 02:00:00 on 2025-07-28.
In the last 24 hours, the best air quality in Alameda, California was observed at 11:00:00 on 2025-07-28.
As of now, the AQI in Alameda, California is 22, 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 3.724 μg/m3.
The PM10 concentration in Alameda, California is 16.476 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Alameda, California is 0.217 ppm.
Currently, Alameda, California has a sulfur dioxide (SO2) concentration of 0.521 ppb.
The current ozone (O3) level in Alameda, California at the moment is 17.463 ppm.
Nitrogen dioxide (NO2) level in Alameda, California at the moment is 2.244 ppb.
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