Table 2.

AQI value and status of the city without 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	165	89	117	4	36	16	Unhealthy and responsible pollutant is PM2.5
Mumbai, India	121	69	103	5	31	12	Unhealthy for sensitive group and responsible pollutant is PM2.5
New York, USA	52	35	40	3	32	15	Moderate and responsible pollutant is PM2.5
London, UK	82	23	76	2	27	14	Moderate responsible pollutant is PM2.5
Los Angeles USA	53	37	40	2	22	17	Moderate and responsible pollutant is PM2.5
Madrid, Spain	55	30	32	2	21	16	Moderate and responsible pollutant is PM2.5
Seoul, South Korea	142	54	76	3	25	14	Unhealthy for sensitive group and responsible pollutant is PM2.5
Rome, Italy	52	32	58	3	23	9	Moderate and responsible pollutant is CO
São Paulo, Brazil	57	24	49	4	23	16	Moderate and responsible pollutant is PM2.5
Wuhan, China	155	62	93	4	43	21	Unhealthy and responsible pollutant is PM2.5