CHULA VISTA

Data time: 9/21/2026 1:00 PM PT

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
13:00	40	Good	OzonePPM8	01_OZONE	None	None.
13:00	17	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
13:00	43	Good	PM2.5	21_PM25	None	None.
13:00	1	Good	NO2 PPB	04_TRUE NO2	None	None
12:00	39	Good	OzonePPM8	01_OZONE	None	None.
12:00	17	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
12:00	43	Good	PM2.5	21_PM25	None	None.
12:00	1	Good	NO2 PPB	04_TRUE NO2	None	None
11:00	39	Good	OzonePPM8	01_OZONE	None	None.
11:00	18	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
11:00	44	Good	PM2.5	21_PM25	None	None.
11:00	1	Good	NO2 PPB	04_TRUE NO2	None	None
10:00	38	Good	OzonePPM8	01_OZONE	None	None.
10:00	18	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
10:00	46	Good	PM2.5	21_PM25	None	None.
10:00	1	Good	NO2 PPB	04_TRUE NO2	None	None
09:00	38	Good	OzonePPM8	01_OZONE	None	None.
09:00	19	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
09:00	47	Good	PM2.5	21_PM25	None	None.
09:00	1	Good	NO2 PPB	04_TRUE NO2	None	None
08:00	38	Good	OzonePPM8	01_OZONE	None	None.
08:00	19	Good	PM10	22_PM10	None	People with respiratory disease are the group most at risk.
08:00	48	Good	PM2.5	21_PM25	None	None.