Stay updated with real-time air quality in Daly City, 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)
23
Good
Daly City, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.92 μg/m³
0
55
155
255
425
605+
25.45 ppb
0
55
71
86
201
201+
0.61 ppb
0
36
76
186
605
1005+
2.75 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Daly City, California
Daly City, California
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AQI 29
Good
5.44μg/m³
PM2.5
21.11μg/m³
PM10
31.01ppb
O3
0.60ppb
SO2
2.77ppb
NO2
0.32ppm
CO
AQI 27
Good
5.12μg/m³
PM2.5
18.01μg/m³
PM10
26.49ppb
O3
0.59ppb
SO2
2.73ppb
NO2
0.32ppm
CO
AQI 27
Good
5.12μg/m³
PM2.5
18.01μg/m³
PM10
26.49ppb
O3
0.59ppb
SO2
2.73ppb
NO2
0.32ppm
CO
AQI 22
Good
4.42μg/m³
PM2.5
19.63μg/m³
PM10
24.26ppb
O3
0.63ppb
SO2
1.80ppb
NO2
0.22ppm
CO
AQI 24
Good
4.37μg/m³
PM2.5
21.04μg/m³
PM10
26.05ppb
O3
0.59ppb
SO2
2.75ppb
NO2
0.32ppm
CO
AQI 28
Good
3.48μg/m³
PM2.5
29.97μg/m³
PM10
27.98ppb
O3
0.58ppb
SO2
2.77ppb
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 Daly City, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Daly City, California was at its worst at 12:00:00 on 2025-06-05.
In the last 24 hours, the best air quality in Daly City, California was observed at 06:00:00 on 2025-06-06.
As of now, the AQI in Daly City, California is 23, indicating Good conditions.
Daly City, California air has the highest levels of O3.
Poor air quality in Daly City, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Daly City, California are currently 4.067 μg/m3.
The PM10 concentration in Daly City, California is 17.923 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Daly City, California is 0.285 ppm.
Currently, Daly City, California has a sulfur dioxide (SO2) concentration of 0.609 ppb.
The current ozone (O3) level in Daly City, California at the moment is 25.445 ppm.
Nitrogen dioxide (NO2) level in Daly City, California at the moment is 2.752 ppb.
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