Stay updated with real-time air quality in Placentia, 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)
27
Good
Placentia, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.58 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.52 μg/m³
0
55
155
255
425
605+
18.09 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
7.69 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Placentia, California
Placentia, California
Scroll To Air Quality MapLoading...
AQI 46
Good
5.29μg/m³
PM2.5
30.56μg/m³
PM10
50.43ppb
O3
0.29ppb
SO2
10.21ppb
NO2
0.23ppm
CO
AQI 44
Good
5.21μg/m³
PM2.5
30.28μg/m³
PM10
47.18ppb
O3
0.30ppb
SO2
8.62ppb
NO2
0.24ppm
CO
AQI 46
Good
4.95μg/m³
PM2.5
34.67μg/m³
PM10
49.87ppb
O3
0.31ppb
SO2
11.47ppb
NO2
0.33ppm
CO
AQI 46
Good
5.58μg/m³
PM2.5
28.41μg/m³
PM10
49.74ppb
O3
0.29ppb
SO2
8.33ppb
NO2
0.19ppm
CO
AQI 46
Good
5.12μg/m³
PM2.5
32.39μg/m³
PM10
49.52ppb
O3
0.30ppb
SO2
10.19ppb
NO2
0.29ppm
CO
AQI 47
Good
5.96μg/m³
PM2.5
26.48μg/m³
PM10
50.89ppb
O3
0.28ppb
SO2
7.81ppb
NO2
0.10ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Placentia, California are available every hour.
Placentia, California experienced its worst air quality at 11:00:00, 2025-09-09.
The best air quality in Placentia, California was observed at 10:00:00 on 2025-09-09.
The air quality in Placentia, California right now is Good, with an AQI of 27.
In Placentia, California, PM2.5 is the most frequently found pollutant.
When air quality in Placentia, California is compromised, staying indoors and wearing a mask can reduce health risks.
Placentia, California currently has a PM2.5 concentration of 4.584 μg/m3.
Placentia, California currently has a PM10 concentration of 13.524 μg/m3.
The current carbon monoxide (CO) level in Placentia, California is 0.223 ppm.
The current sulfur dioxide (SO2) concentration in Placentia, California is 0.284 ppb.
Placentia, California currently has an ozone (O3) concentration of 18.092 ppm.
The current level of nitrogen dioxide (NO2) in Placentia, California is 7.689 ppb.
All Rights Reserved © Ambee Inc. 2025