AQSQID: 800090061

Site Name: Iztacalco

Location: Mexico City (Guillermo Prieto), MX

Reporting: True, Located: True

Current AQI: 24.0

Mexico City (Guillermo Prieto) MX, MX: 19.3844, -99.1176

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 4, 2020, noon N/A N/A N/A 23.0 ppb (21) N/A 1.0 ppb (1) 6.0 ppb (5) 0.6 ppb (7) 26.0 μg/m3 (24) N/A 24.0
 
April 4, 2020, 11 a.m. N/A N/A N/A 31.0 ppb (29) N/A 1.0 ppb (1) 4.0 ppb (3) 0.7 ppb (8) 21.0 μg/m3 (19) N/A 29.0
 
April 4, 2020, 10 a.m. N/A N/A N/A 32.0 ppb (30) N/A 2.0 ppb (3) 2.0 ppb (2) 0.7 ppb (8) 8.0 μg/m3 (7) N/A 30.0
 
April 4, 2020, 9 a.m. N/A N/A N/A 15.0 ppb (14) N/A 2.0 ppb (3) 16.0 ppb (12) 0.4 ppb (4) 11.0 μg/m3 (10) N/A 14.0
 
April 4, 2020, 8 a.m. N/A N/A N/A 16.0 ppb (15) N/A 2.0 ppb (3) 19.0 ppb (15) 0.4 ppb (4) 14.0 μg/m3 (13) N/A 15.0
 
April 4, 2020, 7 a.m. N/A N/A N/A 15.0 ppb (14) N/A 2.0 ppb (3) 27.0 ppb (21) 0.4 ppb (4) N/A N/A 21.0
 
April 4, 2020, 6 a.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) 27.0 ppb (21) 0.5 ppb (6) 22.0 μg/m3 (20) N/A 21.0
 
April 4, 2020, 5 a.m. N/A N/A N/A 16.0 ppb (15) N/A 2.0 ppb (3) 30.0 ppb (23) 0.5 ppb (6) 87.0 μg/m3 (66) N/A 66.0
 
April 4, 2020, 4 a.m. N/A N/A N/A 15.0 ppb (14) N/A 2.0 ppb (3) 32.0 ppb (25) 0.4 ppb (4) 54.0 μg/m3 (49) N/A 49.0
 
April 4, 2020, 3 a.m. N/A N/A N/A 19.0 ppb (18) N/A 2.0 ppb (3) 40.0 ppb (31) 0.6 ppb (7) 44.0 μg/m3 (40) N/A 40.0
 
April 4, 2020, 2 a.m. N/A N/A N/A 18.0 ppb (17) N/A 2.0 ppb (3) 45.0 ppb (35) 0.6 ppb (7) 38.0 μg/m3 (35) N/A 35.0
 
April 4, 2020, 1 a.m. N/A N/A N/A 18.0 ppb (17) N/A 2.0 ppb (3) 43.0 ppb (33) 0.6 ppb (7) 48.0 μg/m3 (44) N/A 44.0
 
April 4, 2020, midnight N/A N/A N/A 18.0 ppb (17) N/A 2.0 ppb (3) 49.0 ppb (38) 0.6 ppb (7) 61.0 μg/m3 (53) N/A 53.0
 
April 3, 2020, 11 p.m. N/A N/A N/A 16.0 ppb (15) N/A 3.0 ppb (4) 61.0 ppb (47) 0.6 ppb (7) 42.0 μg/m3 (38) N/A 47.0
 
April 3, 2020, 10 p.m. N/A N/A N/A 13.0 ppb (12) N/A 6.0 ppb (9) 85.0 ppb (67) 0.5 ppb (6) 36.0 μg/m3 (33) N/A 67.0
 
April 3, 2020, 9 p.m. N/A N/A N/A 12.0 ppb (11) N/A 4.0 ppb (6) 93.0 ppb (73) 0.5 ppb (6) 28.0 μg/m3 (25) N/A 73.0
 
April 3, 2020, 8 p.m. N/A N/A N/A 13.0 ppb (12) N/A 3.0 ppb (4) 89.0 ppb (70) 0.5 ppb (6) 35.0 μg/m3 (32) N/A 70.0
 
April 3, 2020, 7 p.m. N/A N/A N/A 16.0 ppb (15) N/A 4.0 ppb (6) 83.0 ppb (65) 0.6 ppb (7) 34.0 μg/m3 (31) N/A 65.0
 
April 3, 2020, 6 p.m. N/A N/A N/A 18.0 ppb (17) N/A 4.0 ppb (6) 65.0 ppb (50) 0.5 ppb (6) 42.0 μg/m3 (38) N/A 50.0
 
April 3, 2020, 5 p.m. N/A N/A N/A 36.0 ppb (33) N/A 5.0 ppb (7) 44.0 ppb (34) 0.8 ppb (9) 36.0 μg/m3 (33) N/A 34.0
 
April 3, 2020, 4 p.m. N/A N/A N/A 51.0 ppb (47) N/A 4.0 ppb (6) 18.0 ppb (14) 1.1 ppb (12) 28.0 μg/m3 (25) N/A 47.0
 
April 3, 2020, 3 p.m. N/A N/A N/A 47.0 ppb (44) N/A 3.0 ppb (4) 12.0 ppb (9) 1.0 ppb (11) 32.0 μg/m3 (29) N/A 44.0
 
April 3, 2020, 2 p.m. N/A N/A N/A 37.0 ppb (34) N/A 2.0 ppb (3) 4.0 ppb (3) 0.9 ppb (10) 26.0 μg/m3 (24) N/A 34.0
 
April 3, 2020, 1 p.m. N/A N/A N/A 37.0 ppb (34) N/A 2.0 ppb (3) 1.0 ppb (1) 1.0 ppb (11) 25.0 μg/m3 (23) N/A 34.0
 
April 3, 2020, noon N/A N/A N/A 32.0 ppb (30) N/A 2.0 ppb (3) 1.0 ppb (1) 0.9 ppb (10) 20.0 μg/m3 (18) N/A 30.0
 
April 3, 2020, 11 a.m. N/A N/A N/A 25.0 ppb (23) N/A 1.0 ppb (1) 9.0 ppb (7) 0.6 ppb (7) 16.0 μg/m3 (15) N/A 23.0
 
April 3, 2020, 10 a.m. N/A N/A N/A 23.0 ppb (21) N/A 1.0 ppb (1) 12.0 ppb (9) 0.5 ppb (6) 22.0 μg/m3 (20) N/A 21.0
 
April 3, 2020, 9 a.m. N/A N/A N/A 19.0 ppb (18) N/A 2.0 ppb (3) 17.0 ppb (13) 0.4 ppb (4) 23.0 μg/m3 (21) N/A 21.0
 
April 3, 2020, 8 a.m. N/A N/A N/A 32.0 ppb (30) N/A 2.0 ppb (3) 10.0 ppb (8) 0.6 ppb (7) 4.0 μg/m3 (4) N/A 30.0
 
April 3, 2020, 7 a.m. N/A N/A N/A 24.0 ppb (22) N/A 2.0 ppb (3) 18.0 ppb (14) 0.6 ppb (7) N/A N/A 22.0
 
April 3, 2020, 6 a.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 34.0 ppb (26) 0.4 ppb (4) 28.0 μg/m3 (25) N/A 26.0
 
April 3, 2020, 5 a.m. N/A N/A N/A 16.0 ppb (15) N/A 2.0 ppb (3) 30.0 ppb (23) 0.5 ppb (6) 73.0 μg/m3 (59) N/A 59.0
 
April 3, 2020, 4 a.m. N/A N/A N/A 17.0 ppb (16) N/A 2.0 ppb (3) 34.0 ppb (26) 0.5 ppb (6) 61.0 μg/m3 (53) N/A 53.0
 
April 3, 2020, 3 a.m. N/A N/A N/A 18.0 ppb (17) N/A 2.0 ppb (3) 43.0 ppb (33) 0.5 ppb (6) 56.0 μg/m3 (50) N/A 50.0
 
April 3, 2020, 2 a.m. N/A N/A N/A 23.0 ppb (21) N/A 2.0 ppb (3) 44.0 ppb (34) 0.7 ppb (8) 53.0 μg/m3 (48) N/A 48.0
 
April 3, 2020, 1 a.m. N/A N/A N/A 24.0 ppb (22) N/A 2.0 ppb (3) 45.0 ppb (35) 0.8 ppb (9) 68.0 μg/m3 (56) N/A 56.0
 
April 3, 2020, midnight N/A N/A N/A 18.0 ppb (17) N/A 2.0 ppb (3) 56.0 ppb (43) 0.7 ppb (8) 93.0 μg/m3 (69) N/A 69.0
 
April 2, 2020, 11 p.m. N/A N/A N/A 19.0 ppb (18) N/A 3.0 ppb (4) 65.0 ppb (50) 0.7 ppb (8) 45.0 μg/m3 (41) N/A 50.0
 
April 2, 2020, 10 p.m. N/A N/A N/A 17.0 ppb (16) N/A 4.0 ppb (6) 101.0 ppb (80) 0.5 ppb (6) 39.0 μg/m3 (35) N/A 80.0
 
April 2, 2020, 9 p.m. N/A N/A N/A 15.0 ppb (14) N/A 4.0 ppb (6) 111.0 ppb (88) 0.5 ppb (6) 33.0 μg/m3 (30) N/A 88.0
 
April 2, 2020, 8 p.m. N/A N/A N/A 13.0 ppb (12) N/A 3.0 ppb (4) 99.0 ppb (78) 0.5 ppb (6) 25.0 μg/m3 (23) N/A 78.0
 
April 2, 2020, 7 p.m. N/A N/A N/A 16.0 ppb (15) N/A 4.0 ppb (6) 85.0 ppb (67) 0.5 ppb (6) 37.0 μg/m3 (34) N/A 67.0
 
April 2, 2020, 6 p.m. N/A N/A N/A 22.0 ppb (20) N/A 5.0 ppb (7) 67.0 ppb (52) 0.5 ppb (6) 55.0 μg/m3 (50) N/A 52.0
 
April 2, 2020, 5 p.m. N/A N/A N/A 34.0 ppb (31) N/A 9.0 ppb (13) 49.0 ppb (38) 0.7 ppb (8) 66.0 μg/m3 (56) N/A 56.0
 
April 2, 2020, 4 p.m. N/A N/A N/A 43.0 ppb (40) N/A 13.0 ppb (19) 25.0 ppb (19) 1.0 ppb (11) 49.0 μg/m3 (45) N/A 45.0
 
April 2, 2020, 3 p.m. N/A N/A N/A 39.0 ppb (36) N/A 16.0 ppb (23) 13.0 ppb (10) 0.9 ppb (10) 47.0 μg/m3 (43) N/A 43.0
 
April 2, 2020, 2 p.m. N/A N/A N/A 32.0 ppb (30) N/A 4.0 ppb (6) 6.0 ppb (5) 0.8 ppb (9) 43.0 μg/m3 (39) N/A 39.0
 
April 2, 2020, 1 p.m. N/A N/A N/A 32.0 ppb (30) N/A 3.0 ppb (4) 5.0 ppb (4) 0.7 ppb (8) 44.0 μg/m3 (40) N/A 40.0
 
April 2, 2020, noon N/A N/A N/A 29.0 ppb (27) N/A 3.0 ppb (4) 10.0 ppb (8) 0.7 ppb (8) 37.0 μg/m3 (34) N/A 34.0
 
April 2, 2020, 11 a.m. N/A N/A N/A 26.0 ppb (24) N/A 3.0 ppb (4) 14.0 ppb (11) 0.6 ppb (7) 33.0 μg/m3 (30) N/A 30.0
 
April 2, 2020, 10 a.m. N/A N/A N/A 21.0 ppb (19) N/A 4.0 ppb (6) 20.0 ppb (15) 0.5 ppb (6) 34.0 μg/m3 (31) N/A 31.0
 
April 2, 2020, 9 a.m. N/A N/A N/A 19.0 ppb (18) N/A 5.0 ppb (7) 23.0 ppb (18) 0.5 ppb (6) 32.0 μg/m3 (29) N/A 29.0
 
April 2, 2020, 8 a.m. N/A N/A N/A 21.0 ppb (19) N/A 4.0 ppb (6) 24.0 ppb (18) 0.5 ppb (6) 29.0 μg/m3 (26) N/A 26.0
 
April 2, 2020, 7 a.m. N/A N/A N/A 26.0 ppb (24) N/A 4.0 ppb (6) 24.0 ppb (18) 0.6 ppb (7) N/A N/A 24.0
 
April 2, 2020, 6 a.m. N/A N/A N/A 23.0 ppb (21) N/A 3.0 ppb (4) 31.0 ppb (24) 0.5 ppb (6) 44.0 μg/m3 (40) N/A 40.0
 
April 2, 2020, 5 a.m. N/A N/A N/A 30.0 ppb (28) N/A 3.0 ppb (4) 24.0 ppb (18) 0.6 ppb (7) 49.0 μg/m3 (45) N/A 45.0
 
April 2, 2020, 4 a.m. N/A N/A N/A 20.0 ppb (19) N/A 2.0 ppb (3) 39.0 ppb (30) 0.5 ppb (6) 58.0 μg/m3 (52) N/A 52.0
 
April 2, 2020, 3 a.m. N/A N/A N/A 21.0 ppb (19) N/A 2.0 ppb (3) 43.0 ppb (33) 0.6 ppb (7) 67.0 μg/m3 (56) N/A 56.0
 
April 2, 2020, 2 a.m. N/A N/A N/A 26.0 ppb (24) N/A 2.0 ppb (3) 37.0 ppb (28) 0.8 ppb (9) 76.0 μg/m3 (60) N/A 60.0
 
April 2, 2020, 1 a.m. N/A N/A N/A 19.0 ppb (18) N/A 2.0 ppb (3) 49.0 ppb (38) 0.7 ppb (8) 77.0 μg/m3 (61) N/A 61.0
 
April 2, 2020, midnight N/A N/A N/A 17.0 ppb (16) N/A 2.0 ppb (3) 74.0 ppb (57) 0.6 ppb (7) 57.0 μg/m3 (51) N/A 57.0
 
April 1, 2020, 11 p.m. N/A N/A N/A 15.0 ppb (14) N/A 3.0 ppb (4) 99.0 ppb (78) 0.6 ppb (7) 47.0 μg/m3 (43) N/A 78.0
 
April 1, 2020, 10 p.m. N/A N/A N/A 13.0 ppb (12) N/A 3.0 ppb (4) 105.0 ppb (83) 0.5 ppb (6) 44.0 μg/m3 (40) N/A 83.0
 
April 1, 2020, 9 p.m. N/A N/A N/A 14.0 ppb (13) N/A 3.0 ppb (4) 102.0 ppb (81) 0.5 ppb (6) 42.0 μg/m3 (38) N/A 81.0
 
April 1, 2020, 8 p.m. N/A N/A N/A 15.0 ppb (14) N/A 3.0 ppb (4) 94.0 ppb (74) 0.5 ppb (6) 46.0 μg/m3 (42) N/A 74.0
 
April 1, 2020, 7 p.m. N/A N/A N/A 21.0 ppb (19) N/A 4.0 ppb (6) 86.0 ppb (68) 0.6 ppb (7) 51.0 μg/m3 (46) N/A 68.0
 
April 1, 2020, 6 p.m. N/A N/A N/A 22.0 ppb (20) N/A 4.0 ppb (6) 72.0 ppb (56) 0.7 ppb (8) 69.0 μg/m3 (57) N/A 57.0
 
April 1, 2020, 5 p.m. N/A N/A N/A 26.0 ppb (24) N/A 5.0 ppb (7) 51.0 ppb (39) 0.7 ppb (8) 49.0 μg/m3 (45) N/A 45.0
 
April 1, 2020, 4 p.m. N/A N/A N/A 33.0 ppb (31) N/A 7.0 ppb (10) 25.0 ppb (19) 0.9 ppb (10) 52.0 μg/m3 (47) N/A 47.0
 
April 1, 2020, 3 p.m. N/A N/A N/A 31.0 ppb (29) N/A 9.0 ppb (13) 11.0 ppb (8) 0.8 ppb (9) 44.0 μg/m3 (40) N/A 40.0
 
April 1, 2020, 2 p.m. N/A N/A N/A 33.0 ppb (31) N/A 5.0 ppb (7) 4.0 ppb (3) 0.8 ppb (9) 38.0 μg/m3 (35) N/A 35.0
 
April 1, 2020, 1 p.m. N/A N/A N/A 33.0 ppb (31) N/A 3.0 ppb (4) 3.0 ppb (2) 0.6 ppb (7) 37.0 μg/m3 (34) N/A 34.0
 
April 1, 2020, noon N/A N/A N/A 24.0 ppb (22) N/A 3.0 ppb (4) 10.0 ppb (8) 0.5 ppb (6) 36.0 μg/m3 (33) N/A 33.0
 
April 1, 2020, 11 a.m. N/A N/A N/A 27.0 ppb (25) N/A 3.0 ppb (4) 8.0 ppb (6) 0.5 ppb (6) 34.0 μg/m3 (31) N/A 31.0
 
April 1, 2020, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A 4.0 ppb (6) 24.0 ppb (18) 0.4 ppb (4) 30.0 μg/m3 (27) N/A 27.0
 
April 1, 2020, 9 a.m. N/A N/A N/A 33.0 ppb (31) N/A 94.0 ppb (77) 6.0 ppb (5) 9.6 ppb (102) 35.0 μg/m3 (32) N/A 102.0
 
April 1, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 37.0 μg/m3 (34) N/A 35.0
 
April 1, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.4 ppb (4) N/A N/A 4.0
 
April 1, 2020, 6 a.m. N/A N/A N/A 19.0 ppb (18) N/A 3.0 ppb (4) 23.0 ppb (18) 0.4 ppb (4) 36.0 μg/m3 (33) N/A 33.0
 
April 1, 2020, 5 a.m. N/A N/A N/A 17.0 ppb (16) N/A 2.0 ppb (3) 27.0 ppb (21) 0.5 ppb (6) 47.0 μg/m3 (43) N/A 43.0
 
April 1, 2020, 4 a.m. N/A N/A N/A 14.0 ppb (13) N/A 2.0 ppb (3) 33.0 ppb (25) 0.4 ppb (4) 59.0 μg/m3 (52) N/A 52.0
 
April 1, 2020, 3 a.m. N/A N/A N/A 15.0 ppb (14) N/A 2.0 ppb (3) 32.0 ppb (25) 0.5 ppb (6) 72.0 μg/m3 (58) N/A 58.0
 
April 1, 2020, 2 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 36.0 ppb (28) 0.4 ppb (4) 96.0 μg/m3 (70) N/A 70.0
 
April 1, 2020, 1 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 40.0 ppb (31) 0.5 ppb (6) 109.0 μg/m3 (77) N/A 77.0
 
April 1, 2020, midnight N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 47.0 ppb (36) 0.5 ppb (6) 52.0 μg/m3 (47) N/A 47.0
 
March 31, 2020, 11 p.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 58.0 ppb (45) 0.4 ppb (4) 50.0 μg/m3 (45) N/A 45.0
 
March 31, 2020, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 65.0 ppb (50) 0.3 ppb (3) 35.0 μg/m3 (32) N/A 50.0
 
March 31, 2020, 9 p.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 70.0 ppb (54) 0.3 ppb (3) 34.0 μg/m3 (31) N/A 54.0
 
March 31, 2020, 8 p.m. N/A N/A N/A 10.0 ppb (9) N/A 2.0 ppb (3) 68.0 ppb (52) 0.3 ppb (3) 41.0 μg/m3 (37) N/A 52.0
 
March 31, 2020, 7 p.m. N/A N/A N/A 19.0 ppb (18) N/A 9.0 ppb (13) 72.0 ppb (56) 0.5 ppb (6) 52.0 μg/m3 (47) N/A 56.0
 
March 31, 2020, 6 p.m. N/A N/A N/A 29.0 ppb (27) N/A 8.0 ppb (11) 65.0 ppb (50) 0.6 ppb (7) 61.0 μg/m3 (53) N/A 53.0
 
March 31, 2020, 5 p.m. N/A N/A N/A 40.0 ppb (37) N/A 11.0 ppb (16) 52.0 ppb (40) 0.8 ppb (9) 63.0 μg/m3 (54) N/A 54.0
 
March 31, 2020, 4 p.m. N/A N/A N/A 38.0 ppb (35) N/A 11.0 ppb (16) 32.0 ppb (25) 0.9 ppb (10) 55.0 μg/m3 (50) N/A 50.0
 
March 31, 2020, 3 p.m. N/A N/A N/A 38.0 ppb (35) N/A 7.0 ppb (10) 13.0 ppb (10) 1.0 ppb (11) 58.0 μg/m3 (52) N/A 52.0
 
March 31, 2020, 2 p.m. N/A N/A N/A 39.0 ppb (36) N/A 6.0 ppb (9) 3.0 ppb (2) 1.1 ppb (12) 52.0 μg/m3 (47) N/A 47.0
 
March 31, 2020, 1 p.m. N/A N/A N/A 37.0 ppb (34) N/A 5.0 ppb (7) 2.0 ppb (2) 0.8 ppb (9) 60.0 μg/m3 (52) N/A 52.0
 
March 31, 2020, noon N/A N/A N/A 38.0 ppb (35) N/A 5.0 ppb (7) 1.0 ppb (1) 0.8 ppb (9) 46.0 μg/m3 (42) N/A 42.0
 
March 31, 2020, 11 a.m. N/A N/A N/A 37.0 ppb (34) N/A 3.0 ppb (4) 2.0 ppb (2) 0.7 ppb (8) 44.0 μg/m3 (40) N/A 40.0
 
March 31, 2020, 10 a.m. N/A N/A N/A 35.0 ppb (32) N/A 3.0 ppb (4) 3.0 ppb (2) 0.5 ppb (6) 41.0 μg/m3 (37) N/A 37.0
 
March 31, 2020, 9 a.m. N/A N/A N/A 22.0 ppb (20) N/A 7.0 ppb (10) 18.0 ppb (14) 0.4 ppb (4) 47.0 μg/m3 (43) N/A 43.0
 
March 31, 2020, 8 a.m. N/A N/A N/A 30.0 ppb (28) N/A 6.0 ppb (9) 12.0 ppb (9) 0.4 ppb (4) 40.0 μg/m3 (36) N/A 36.0
 
March 31, 2020, 7 a.m. N/A N/A N/A 27.0 ppb (25) N/A 2.0 ppb (3) 16.0 ppb (12) 0.4 ppb (4) N/A N/A 25.0
 
March 31, 2020, 6 a.m. N/A N/A N/A 30.0 ppb (28) N/A 3.0 ppb (4) 15.0 ppb (12) 0.5 ppb (6) 41.0 μg/m3 (37) N/A 37.0
 
March 31, 2020, 5 a.m. N/A N/A N/A 28.0 ppb (26) N/A 1.0 ppb (1) 16.0 ppb (12) 0.5 ppb (6) 62.0 μg/m3 (54) N/A 54.0
 
March 31, 2020, 4 a.m. N/A N/A N/A 30.0 ppb (28) N/A 2.0 ppb (3) 32.0 ppb (25) 0.6 ppb (7) 74.0 μg/m3 (60) N/A 60.0
 
March 31, 2020, 3 a.m. N/A N/A N/A 29.0 ppb (27) N/A 2.0 ppb (3) 39.0 ppb (30) 0.8 ppb (9) 98.0 μg/m3 (72) N/A 72.0
 
March 31, 2020, 2 a.m. N/A N/A N/A 27.0 ppb (25) N/A 2.0 ppb (3) 46.0 ppb (35) 0.9 ppb (10) 70.0 μg/m3 (58) N/A 58.0
 
March 31, 2020, 1 a.m. N/A N/A N/A 24.0 ppb (22) N/A 2.0 ppb (3) 74.0 ppb (57) 0.6 ppb (7) 58.0 μg/m3 (52) N/A 57.0
 
March 31, 2020, midnight N/A N/A N/A 16.0 ppb (15) N/A 3.0 ppb (4) 102.0 ppb (81) 0.5 ppb (6) 64.0 μg/m3 (54) N/A 81.0
 
March 30, 2020, 11 p.m. N/A N/A N/A 14.0 ppb (13) N/A 3.0 ppb (4) 120.0 ppb (96) 0.5 ppb (6) 48.0 μg/m3 (44) N/A 96.0
 
March 30, 2020, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A 3.0 ppb (4) 106.0 ppb (84) 0.4 ppb (4) 56.0 μg/m3 (50) N/A 84.0
 
March 30, 2020, 9 p.m. N/A N/A N/A 12.0 ppb (11) N/A 3.0 ppb (4) 103.0 ppb (82) 0.4 ppb (4) 51.0 μg/m3 (46) N/A 82.0
 
March 30, 2020, 8 p.m. N/A N/A N/A 14.0 ppb (13) N/A 3.0 ppb (4) 92.0 ppb (72) 0.4 ppb (4) 47.0 μg/m3 (43) N/A 72.0
 
March 30, 2020, 7 p.m. N/A N/A N/A 21.0 ppb (19) N/A 4.0 ppb (6) 80.0 ppb (62) 0.6 ppb (7) 52.0 μg/m3 (47) N/A 62.0
 
March 30, 2020, 6 p.m. N/A N/A N/A 24.0 ppb (22) N/A 4.0 ppb (6) 71.0 ppb (55) 0.6 ppb (7) 63.0 μg/m3 (54) N/A 55.0
 
March 30, 2020, 5 p.m. N/A N/A N/A 25.0 ppb (23) N/A 6.0 ppb (9) 56.0 ppb (43) 0.7 ppb (8) 62.0 μg/m3 (54) N/A 54.0
 
March 30, 2020, 4 p.m. N/A N/A N/A 34.0 ppb (31) N/A 9.0 ppb (13) 30.0 ppb (23) 1.0 ppb (11) 58.0 μg/m3 (52) N/A 52.0
 
March 30, 2020, 3 p.m. N/A N/A N/A 25.0 ppb (23) N/A 8.0 ppb (11) 17.0 ppb (13) 0.8 ppb (9) 49.0 μg/m3 (45) N/A 45.0
 
March 30, 2020, 2 p.m. N/A N/A N/A 27.0 ppb (25) N/A 10.0 ppb (14) 6.0 ppb (5) 0.9 ppb (10) 45.0 μg/m3 (41) N/A 41.0
 
March 30, 2020, 1 p.m. N/A N/A N/A 26.0 ppb (24) N/A 15.0 ppb (21) 7.0 ppb (5) 0.7 ppb (8) 62.0 μg/m3 (54) N/A 54.0
 
March 30, 2020, noon N/A N/A N/A 17.0 ppb (16) N/A 15.0 ppb (21) 14.0 ppb (11) 0.5 ppb (6) 90.0 μg/m3 (68) N/A 68.0
 
March 30, 2020, 11 a.m. N/A N/A N/A 15.0 ppb (14) N/A 14.0 ppb (20) 17.0 ppb (13) 0.5 ppb (6) 45.0 μg/m3 (41) N/A 41.0
 
March 30, 2020, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A 13.0 ppb (19) 20.0 ppb (15) 0.4 ppb (4) 45.0 μg/m3 (41) N/A 41.0
 
March 30, 2020, 9 a.m. N/A N/A N/A 15.0 ppb (14) N/A 15.0 ppb (21) 20.0 ppb (15) 0.5 ppb (6) 51.0 μg/m3 (46) N/A 46.0
 
March 30, 2020, 8 a.m. N/A N/A N/A 18.0 ppb (17) N/A 15.0 ppb (21) 19.0 ppb (15) 0.5 ppb (6) 50.0 μg/m3 (45) N/A 45.0
 
March 30, 2020, 7 a.m. N/A N/A N/A 15.0 ppb (14) N/A 15.0 ppb (21) 23.0 ppb (18) 0.5 ppb (6) N/A N/A 21.0
 
March 30, 2020, 6 a.m. N/A N/A N/A 15.0 ppb (14) N/A 14.0 ppb (20) 25.0 ppb (19) 0.5 ppb (6) 50.0 μg/m3 (45) N/A 45.0
 
March 30, 2020, 5 a.m. N/A N/A N/A 16.0 ppb (15) N/A 6.0 ppb (9) 25.0 ppb (19) 0.5 ppb (6) 75.0 μg/m3 (60) N/A 60.0
 
March 30, 2020, 4 a.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 29.0 ppb (22) 0.4 ppb (4) 123.0 μg/m3 (84) N/A 84.0
 
March 30, 2020, 3 a.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 31.0 ppb (24) 0.4 ppb (4) 116.0 μg/m3 (80) N/A 80.0
 
March 30, 2020, 2 a.m. N/A N/A N/A 18.0 ppb (17) N/A 2.0 ppb (3) 31.0 ppb (24) 0.6 ppb (7) 59.0 μg/m3 (52) N/A 52.0
 
March 30, 2020, 1 a.m. N/A N/A N/A 11.0 ppb (10) N/A 2.0 ppb (3) 55.0 ppb (42) 0.5 ppb (6) 59.0 μg/m3 (52) N/A 52.0
 
March 30, 2020, midnight N/A N/A N/A 10.0 ppb (9) N/A 3.0 ppb (4) 66.0 ppb (51) 0.5 ppb (6) 52.0 μg/m3 (47) N/A 51.0
 
March 29, 2020, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A 4.0 ppb (6) 73.0 ppb (57) 0.4 ppb (4) 50.0 μg/m3 (45) N/A 57.0
 
March 29, 2020, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A 5.0 ppb (7) 81.0 ppb (63) 0.4 ppb (4) 51.0 μg/m3 (46) N/A 63.0
 
March 29, 2020, 9 p.m. N/A N/A N/A 12.0 ppb (11) N/A 6.0 ppb (9) 114.0 ppb (91) 0.5 ppb (6) 46.0 μg/m3 (42) N/A 91.0
 
March 29, 2020, 8 p.m. N/A N/A N/A 14.0 ppb (13) N/A 5.0 ppb (7) 116.0 ppb (92) 0.5 ppb (6) 54.0 μg/m3 (49) N/A 92.0
 
March 29, 2020, 7 p.m. N/A N/A N/A 18.0 ppb (17) N/A 6.0 ppb (9) 120.0 ppb (96) 0.6 ppb (7) 63.0 μg/m3 (54) N/A 96.0
 
March 29, 2020, 6 p.m. N/A N/A N/A 18.0 ppb (17) N/A 6.0 ppb (9) 96.0 ppb (76) 0.6 ppb (7) 58.0 μg/m3 (52) N/A 76.0
 
March 29, 2020, 5 p.m. N/A N/A N/A 21.0 ppb (19) N/A 8.0 ppb (11) 68.0 ppb (52) 0.6 ppb (7) 51.0 μg/m3 (46) N/A 52.0
 
March 29, 2020, 4 p.m. N/A N/A N/A 22.0 ppb (20) N/A 9.0 ppb (13) 44.0 ppb (34) 0.6 ppb (7) 40.0 μg/m3 (36) N/A 36.0
 
March 29, 2020, 3 p.m. N/A N/A N/A 22.0 ppb (20) N/A 9.0 ppb (13) 30.0 ppb (23) 0.6 ppb (7) 35.0 μg/m3 (32) N/A 32.0
 
March 29, 2020, 2 p.m. N/A N/A N/A 19.0 ppb (18) N/A 12.0 ppb (17) 25.0 ppb (19) 0.5 ppb (6) 42.0 μg/m3 (38) N/A 38.0
 
March 29, 2020, 1 p.m. N/A N/A N/A 16.0 ppb (15) N/A 14.0 ppb (20) 26.0 ppb (20) 0.5 ppb (6) 42.0 μg/m3 (38) N/A 38.0
 
March 29, 2020, noon N/A N/A N/A 14.0 ppb (13) N/A 14.0 ppb (20) 30.0 ppb (23) 0.4 ppb (4) 41.0 μg/m3 (37) N/A 37.0
 
March 29, 2020, 11 a.m. N/A N/A N/A 15.0 ppb (14) N/A 13.0 ppb (19) 29.0 ppb (22) 0.5 ppb (6) 38.0 μg/m3 (35) N/A 35.0
 
March 29, 2020, 10 a.m. N/A N/A N/A 16.0 ppb (15) N/A 5.0 ppb (7) 30.0 ppb (23) 0.4 ppb (4) 38.0 μg/m3 (35) N/A 35.0
 
March 29, 2020, 9 a.m. N/A N/A N/A 15.0 ppb (14) N/A 3.0 ppb (4) 32.0 ppb (25) 0.4 ppb (4) 43.0 μg/m3 (39) N/A 39.0
 
March 29, 2020, 8 a.m. N/A N/A N/A 17.0 ppb (16) N/A 3.0 ppb (4) 31.0 ppb (24) 0.5 ppb (6) 46.0 μg/m3 (42) N/A 42.0
 
March 29, 2020, 7 a.m. N/A N/A N/A 18.0 ppb (17) N/A 2.0 ppb (3) 33.0 ppb (25) 0.5 ppb (6) N/A N/A 25.0
 
March 29, 2020, 6 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 40.0 ppb (31) 0.4 ppb (4) 47.0 μg/m3 (43) N/A 43.0
 
March 29, 2020, 5 a.m. N/A N/A N/A 20.0 ppb (19) N/A 2.0 ppb (3) 36.0 ppb (28) 0.5 ppb (6) 57.0 μg/m3 (51) N/A 51.0
 
March 29, 2020, 4 a.m. N/A N/A N/A 21.0 ppb (19) N/A 2.0 ppb (3) 35.0 ppb (27) 0.6 ppb (7) 45.0 μg/m3 (41) N/A 41.0
 
March 29, 2020, 3 a.m. N/A N/A N/A 29.0 ppb (27) N/A 2.0 ppb (3) 37.0 ppb (28) 0.7 ppb (8) 40.0 μg/m3 (36) N/A 36.0
 
March 29, 2020, 2 a.m. N/A N/A N/A 22.0 ppb (20) N/A 2.0 ppb (3) 48.0 ppb (37) 0.7 ppb (8) 46.0 μg/m3 (42) N/A 42.0
 
March 29, 2020, 1 a.m. N/A N/A N/A 13.0 ppb (12) N/A 2.0 ppb (3) 62.0 ppb (48) 0.4 ppb (4) 37.0 μg/m3 (34) N/A 48.0
 
March 29, 2020, midnight N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 64.0 ppb (49) 0.3 ppb (3) 35.0 μg/m3 (32) N/A 49.0
 
March 28, 2020, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 63.0 ppb (48) 0.3 ppb (3) 39.0 μg/m3 (35) N/A 48.0
 
March 28, 2020, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 64.0 ppb (49) 0.3 ppb (3) 45.0 μg/m3 (41) N/A 49.0
 
March 28, 2020, 9 p.m. N/A N/A N/A 11.0 ppb (10) N/A 2.0 ppb (3) 64.0 ppb (49) 0.3 ppb (3) 50.0 μg/m3 (45) N/A 49.0
 
March 28, 2020, 8 p.m. N/A N/A N/A 13.0 ppb (12) N/A 2.0 ppb (3) 97.0 ppb (77) 0.5 ppb (6) 50.0 μg/m3 (45) N/A 77.0
 
March 28, 2020, 7 p.m. N/A N/A N/A 20.0 ppb (19) N/A 3.0 ppb (4) 102.0 ppb (81) 0.6 ppb (7) 39.0 μg/m3 (35) N/A 81.0
 
March 28, 2020, 6 p.m. N/A N/A N/A 22.0 ppb (20) N/A 4.0 ppb (6) 83.0 ppb (65) 0.6 ppb (7) 67.0 μg/m3 (56) N/A 65.0
 
March 28, 2020, 5 p.m. N/A N/A N/A 29.0 ppb (27) N/A 4.0 ppb (6) 65.0 ppb (50) 0.7 ppb (8) 59.0 μg/m3 (52) N/A 52.0
 
March 28, 2020, 4 p.m. N/A N/A N/A 46.0 ppb (43) N/A 3.0 ppb (4) 42.0 ppb (32) 1.0 ppb (11) 53.0 μg/m3 (48) N/A 48.0
 
March 28, 2020, 3 p.m. N/A N/A N/A 27.0 ppb (25) N/A 2.0 ppb (3) 20.0 ppb (15) 1.0 ppb (11) 64.0 μg/m3 (54) N/A 54.0
 
March 28, 2020, 2 p.m. N/A N/A N/A 28.0 ppb (26) N/A 2.0 ppb (3) 6.0 ppb (5) 1.2 ppb (13) 44.0 μg/m3 (40) N/A 40.0
 
March 28, 2020, 1 p.m. N/A N/A N/A 25.0 ppb (23) N/A 2.0 ppb (3) 2.0 ppb (2) 0.9 ppb (10) 45.0 μg/m3 (41) N/A 41.0