Table 3.

AQI value and status of the city with lockdown

City, country	AQI due to PM2.5	AQI due to PM10	AQI due to CO	AQI due to SO2	AQI due to NO2	AQI due to O3	Remark
Delhi, India	95	60	58	3	12	19	Moderate and responsible pollutant is PM2.5
Mumbai, India	86	48	67	3	20	13	Moderate and responsible pollutant is PM2.5
New York, USA	18	22	30	2	15	18	Good and responsible pollutant is CO
London, UK	60	19	49	2	16	16	Moderate and responsible pollutant is PM2.5
Los Angeles USA	23	25	30	1	9	21	Good and ideal for air, the responsible pollutant is CO
Madrid, Spain	27	24	19	1	7	17	Good and ideal for air, the responsible pollutant is PM2.5
Seoul, South Korea	76	47	49	2	22	13	Moderate and responsible pollutant is PM2.5
Rome, Italy	61	41	40	3	14	8	Moderate and responsible pollutant is PM2.5
São Paulo, Brazil	42	20	30	3	11	15	Good and ideal for air, the responsible pollutant is PM2.5
Wuhan, China	99	47	67	2	17	23	Moderate and responsible pollutant is PM2.5