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)
31
Good
La Mesa, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.56 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.75 μg/m³
0
55
155
255
425
605+
33.01 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
2.55 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
La Mesa, California
La Mesa, California
Scroll To Air Quality MapLoading...
AQI 27
Good
5.18μg/m³
PM2.5
14.41μg/m³
PM10
25.82ppb
O3
0.38ppb
SO2
14.46ppb
NO2
0.26ppm
CO
AQI 27
Good
5.04μg/m³
PM2.5
13.44μg/m³
PM10
25.13ppb
O3
0.39ppb
SO2
14.20ppb
NO2
0.25ppm
CO
AQI 27
Good
5.00μg/m³
PM2.5
13.18μg/m³
PM10
25.06ppb
O3
0.39ppb
SO2
14.16ppb
NO2
0.25ppm
CO
AQI 27
Good
4.63μg/m³
PM2.5
10.21μg/m³
PM10
24.06ppb
O3
0.39ppb
SO2
13.51ppb
NO2
0.24ppm
CO
AQI 27
Good
5.20μg/m³
PM2.5
14.87μg/m³
PM10
25.49ppb
O3
0.39ppb
SO2
14.42ppb
NO2
0.25ppm
CO
AQI 27
Good
4.78μg/m³
PM2.5
11.16μg/m³
PM10
24.30ppb
O3
0.39ppb
SO2
13.48ppb
NO2
0.24ppm
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 11:00:00 on 2025-09-10.
In the last 24 hrs, the best air quality in La Mesa, California was observed at 02:00:00 on 2025-09-10.
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 5.036 μg/m3.
The current PM10 concentration at La Mesa, California is 13.265 μg/m3.
The current carbon monoxide (CO) concentration at La Mesa, California is 0.253 ppm.
The current sulfur dioxide (SO2) concentration at La Mesa, California is 0.384 ppb.
The current ozone (O3) concentration at La Mesa, California is 25.288 ppm.
The current nitrogen dioxide (NO2) concentration at La Mesa, California is 14.269 ppb.
All Rights Reserved © Ambee Inc. 2025