Stay updated with real-time air quality in La Mesa, 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)
28
Good
La Mesa, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.48 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.56 μg/m³
0
55
155
255
425
605+
30.29 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
5.18 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
La Mesa, California
La Mesa, California
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AQI 27
Good
4.92μg/m³
PM2.5
13.16μg/m³
PM10
28.95ppb
O3
0.41ppb
SO2
5.78ppb
NO2
0.17ppm
CO
AQI 27
Good
4.90μg/m³
PM2.5
13.27μg/m³
PM10
29.49ppb
O3
0.41ppb
SO2
4.92ppb
NO2
0.16ppm
CO
AQI 27
Good
4.89μg/m³
PM2.5
13.21μg/m³
PM10
29.49ppb
O3
0.41ppb
SO2
4.89ppb
NO2
0.16ppm
CO
AQI 28
Good
4.80μg/m³
PM2.5
12.95μg/m³
PM10
29.96ppb
O3
0.39ppb
SO2
3.80ppb
NO2
0.14ppm
CO
AQI 27
Good
4.94μg/m³
PM2.5
13.59μg/m³
PM10
29.46ppb
O3
0.41ppb
SO2
5.10ppb
NO2
0.16ppm
CO
AQI 28
Good
4.81μg/m³
PM2.5
12.83μg/m³
PM10
29.77ppb
O3
0.40ppb
SO2
4.08ppb
NO2
0.14ppm
CO
Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for La Mesa, California is updated every hour.
The worst air quality in La Mesa, California in the last 24 hours was observed at 09:00:00 on 2025-07-23.
In the last 24 hrs, the best air quality in La Mesa, California was observed at 03:00:00 on 2025-07-24.
The current air quality in La Mesa, California is 27, categorized as Good based on real-time data.
The most common pollutant in La Mesa, California is PM2.5.
If the air quality in La Mesa, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at La Mesa, California is 4.903 μg/m3.
The current PM10 concentration at La Mesa, California is 12.591 μg/m3.
The current carbon monoxide (CO) concentration at La Mesa, California is 0.197 ppm.
The current sulfur dioxide (SO2) concentration at La Mesa, California is 0.441 ppb.
The current ozone (O3) concentration at La Mesa, California is 26.708 ppm.
The current nitrogen dioxide (NO2) concentration at La Mesa, California is 6.277 ppb.
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