EL CAJON LES

Data time: 11/9/2026 3:00 PM PT

Monitoring Site

Location

Address:: 533 South 1st St
City:: El Cajon
Latitude:: 32.789565
Longitude:: -116.944308
Region:: Inland Valley

Air Quality Information
Pollutant	Concentration	Units of Measure
SO2Hour	0.2	PPB
OzonePPM8	0.042	PPM
PM10	13.6	UG/M3
PM2.5	4.3	UG/M3
CO PPB	158.7	PPB
NO2 PPB	4.7	PPB

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
15:00	0	Good	SO2Hour	05_SO2
15:00	39	Good	OzonePPM8	01_OZONE	None	None.
15:00	13	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
15:00	24	Good	PM2.5	21_PM25	None	None.
15:00	2	Good	CO PPB	06_CO	None	None.
15:00	4	Good	NO2 PPB	04_TRUE NO2	None	None
14:00	0	Good	SO2Hour	05_SO2
14:00	35	Good	OzonePPM8	01_OZONE	None	None.
14:00	12	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
14:00	24	Good	PM2.5	21_PM25	None	None.
14:00	2	Good	CO PPB	06_CO	None	None.
14:00	4	Good	NO2 PPB	04_TRUE NO2	None	None
13:00	0	Good	SO2Hour	05_SO2
13:00	30	Good	OzonePPM8	01_OZONE	None	None.
13:00	12	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
13:00	24	Good	PM2.5	21_PM25	None	None.
13:00	2	Good	CO PPB	06_CO	None	None.
13:00	4	Good	NO2 PPB	04_TRUE NO2	None	None
12:00	0	Good	SO2Hour	05_SO2
12:00	24	Good	OzonePPM8	01_OZONE	None	None.
12:00	12	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
12:00	24	Good	PM2.5	21_PM25	None	None.
12:00	2	Good	CO PPB	06_CO	None	None.
12:00	4	Good	NO2 PPB	04_TRUE NO2	None	None
11:00	0	Good	SO2Hour	05_SO2
11:00	20	Good	OzonePPM8	01_OZONE	None	None.
11:00	12	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
11:00	23	Good	PM2.5	21_PM25	None	None.
11:00	2	Good	CO PPB	06_CO	None	None.
11:00	5	Good	NO2 PPB	04_TRUE NO2	None	None
10:00	0	Good	SO2Hour	05_SO2
10:00	17	Good	OzonePPM8	01_OZONE	None	None.
10:00	12	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
10:00	23	Good	PM2.5	21_PM25	None	None.
10:00	4	Good	CO PPB	06_CO	None	None.