ID: 2340

AQSQID: 800150251

Site Name: Chalco

Added: April 21, 2020, 6:24 p.m.

Updated: April 10, 2021, 11:42 a.m.

Location: Chalco De Díaz Covarrubias (Calle San Juan), MX

Reporting: True, Located: True

Current AQI: 81.0

Chalco De Díaz Covarrubias (Calle San Juan) MX, MX: 19.2669, -98.886

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 10, 2021, 1 a.m. N/A N/A N/A 25.0 ppb (24) N/A 0.0 ppb (0) 44.0 ppb (41) N/A 115.0 μg/m3 (81) N/A 81.0
 
April 10, 2021, midnight N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) 64.0 ppb (81) N/A N/A N/A 81.0
 
April 9, 2021, 11 p.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 73.0 ppb (103) N/A 137.0 μg/m3 (92) N/A 103.0
 
April 9, 2021, 10 p.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 79.0 ppb (106) N/A 138.0 μg/m3 (93) N/A 106.0
 
April 9, 2021, 9 p.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 79.0 ppb (106) N/A N/A N/A 106.0
 
April 9, 2021, 8 p.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 86.0 ppb (109) N/A 5.0 μg/m3 (5) N/A 109.0
 
April 9, 2021, 7 p.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 90.0 ppb (112) N/A 16.0 μg/m3 (15) N/A 112.0
 
April 9, 2021, 6 p.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 84.0 ppb (108) N/A 34.0 μg/m3 (32) N/A 108.0
 
April 9, 2021, 5 p.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 74.0 ppb (103) N/A 68.0 μg/m3 (58) N/A 103.0
 
April 9, 2021, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 55.0 ppb (51) N/A 102.0 μg/m3 (75) N/A 75.0
 
April 9, 2021, 3 p.m. N/A N/A N/A 25.0 ppb (24) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A N/A 29.0
 
April 9, 2021, 2 p.m. N/A N/A N/A 41.0 ppb (39) N/A 1.0 ppb (2) 4.0 ppb (4) N/A N/A N/A 39.0
 
April 9, 2021, 1 p.m. N/A N/A N/A 37.0 ppb (35) N/A 1.0 ppb (2) 2.0 ppb (2) N/A N/A N/A 35.0
 
April 9, 2021, noon N/A N/A N/A 46.0 ppb (44) N/A 1.0 ppb (2) 1.0 ppb (1) N/A N/A N/A 44.0
 
April 8, 2021, 11 p.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 73.0 ppb (103) N/A N/A N/A 103.0
 
April 8, 2021, 10 p.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 77.0 ppb (105) N/A N/A N/A 105.0
 
April 8, 2021, 9 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 77.0 ppb (105) N/A N/A N/A 105.0
 
April 8, 2021, 8 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 80.0 ppb (106) N/A N/A N/A 106.0
 
April 8, 2021, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 76.0 ppb (104) N/A N/A N/A 104.0
 
April 8, 2021, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 76.0 ppb (104) N/A N/A N/A 104.0
 
April 8, 2021, 5 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 72.0 ppb (102) N/A 70.0 μg/m3 (59) N/A 102.0
 
April 8, 2021, 4 p.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 59.0 ppb (65) N/A 109.0 μg/m3 (78) N/A 78.0
 
April 8, 2021, 3 p.m. N/A N/A N/A 32.0 ppb (31) N/A 0.0 ppb (0) 30.0 ppb (28) N/A 97.0 μg/m3 (72) N/A 72.0
 
April 8, 2021, 2 p.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 15.0 ppb (14) N/A 68.0 μg/m3 (58) N/A 58.0
 
April 8, 2021, 1 p.m. N/A N/A N/A 44.0 ppb (42) N/A 0.0 ppb (0) 5.0 ppb (5) N/A 35.0 μg/m3 (33) N/A 42.0
 
April 8, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) N/A 27.0
 
April 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) N/A 27.0
 
April 8, 2021, 2 a.m. N/A N/A N/A 17.0 ppb (17) N/A 0.0 ppb (0) 72.0 ppb (102) N/A N/A N/A 102.0
 
April 8, 2021, 1 a.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 70.0 ppb (100) N/A 34.0 μg/m3 (32) N/A 100.0
 
April 8, 2021, midnight N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 71.0 ppb (101) N/A 33.0 μg/m3 (31) N/A 101.0
 
April 7, 2021, 11 p.m. N/A N/A N/A 11.0 ppb (11) N/A 1.0 ppb (2) 70.0 ppb (100) N/A 52.0 μg/m3 (49) N/A 100.0
 
April 7, 2021, 10 p.m. N/A N/A N/A 8.0 ppb (8) N/A 3.0 ppb (5) 75.0 ppb (104) N/A 37.0 μg/m3 (35) N/A 104.0
 
April 7, 2021, 9 p.m. N/A N/A N/A 7.0 ppb (7) N/A 3.0 ppb (5) 77.0 ppb (105) N/A 63.0 μg/m3 (55) N/A 105.0
 
April 7, 2021, 8 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 81.0 ppb (107) N/A 44.0 μg/m3 (41) N/A 107.0
 
April 7, 2021, 7 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 73.0 ppb (103) N/A 44.0 μg/m3 (41) N/A 103.0
 
April 7, 2021, 6 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 69.0 ppb (97) N/A 21.0 μg/m3 (20) N/A 97.0
 
April 7, 2021, 5 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 56.0 ppb (55) N/A 56.0 μg/m3 (52) N/A 55.0
 
April 7, 2021, 4 p.m. N/A N/A N/A 32.0 ppb (31) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 87.0 μg/m3 (67) N/A 67.0
 
April 7, 2021, 3 p.m. N/A N/A N/A 37.0 ppb (35) N/A 1.0 ppb (2) 13.0 ppb (13) N/A 93.0 μg/m3 (70) N/A 70.0
 
April 7, 2021, 2 p.m. N/A N/A N/A 32.0 ppb (31) N/A 1.0 ppb (2) 5.0 ppb (5) N/A 76.0 μg/m3 (62) N/A 62.0
 
April 7, 2021, 1 p.m. N/A N/A N/A 35.0 ppb (34) N/A 1.0 ppb (2) 2.0 ppb (2) N/A 46.0 μg/m3 (43) N/A 43.0
 
April 7, 2021, noon N/A N/A N/A 35.0 ppb (34) N/A 1.0 ppb (2) 1.0 ppb (1) N/A 34.0 μg/m3 (32) N/A 34.0
 
April 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (32) N/A 32.0
 
April 7, 2021, midnight N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 52.0 ppb (49) N/A 75.0 μg/m3 (61) N/A 61.0
 
April 6, 2021, 11 p.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 52.0 ppb (49) N/A 63.0 μg/m3 (55) N/A 55.0
 
April 6, 2021, 10 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A N/A 48.0
 
April 6, 2021, 9 p.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 66.0 ppb (87) N/A 36.0 μg/m3 (34) N/A 87.0
 
April 6, 2021, 8 p.m. N/A N/A N/A 8.0 ppb (8) N/A 3.0 ppb (5) 83.0 ppb (108) N/A N/A N/A 108.0
 
April 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) N/A 25.0
 
April 6, 2021, 6 p.m. N/A N/A N/A 12.0 ppb (12) N/A 5.0 ppb (8) 79.0 ppb (106) N/A 60.0 μg/m3 (54) N/A 106.0
 
April 6, 2021, 5 p.m. N/A N/A N/A 19.0 ppb (18) N/A 4.0 ppb (6) 58.0 ppb (61) N/A 58.0 μg/m3 (53) N/A 61.0
 
April 6, 2021, 4 p.m. N/A N/A N/A 20.0 ppb (19) N/A 4.0 ppb (6) 45.0 ppb (42) N/A 92.0 μg/m3 (70) N/A 70.0
 
April 6, 2021, 3 p.m. N/A N/A N/A 33.0 ppb (32) N/A 2.0 ppb (3) 17.0 ppb (16) N/A 90.0 μg/m3 (69) N/A 69.0
 
April 6, 2021, 2 p.m. N/A N/A N/A 31.0 ppb (30) N/A 0.0 ppb (0) 8.0 ppb (8) N/A 119.0 μg/m3 (83) N/A 83.0
 
April 6, 2021, 1 p.m. N/A N/A N/A 33.0 ppb (32) N/A 1.0 ppb (2) 4.0 ppb (4) N/A 33.0 μg/m3 (31) N/A 32.0
 
April 6, 2021, noon N/A N/A N/A 25.0 ppb (24) N/A N/A 14.0 ppb (13) N/A 44.0 μg/m3 (41) N/A 41.0
 
April 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 44.0 μg/m3 (41) N/A 41.0
 
April 6, 2021, 1 a.m. N/A N/A N/A 18.0 ppb (17) N/A 2.0 ppb (3) N/A N/A 137.0 μg/m3 (92) N/A 92.0
 
April 6, 2021, midnight N/A N/A N/A 17.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 60.0 μg/m3 (54) N/A 54.0
 
April 5, 2021, 11 p.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) N/A N/A 27.0 μg/m3 (25) N/A 25.0
 
April 5, 2021, 10 p.m. N/A N/A N/A 10.0 ppb (10) N/A 1.0 ppb (2) N/A N/A 73.0 μg/m3 (60) N/A 60.0
 
April 5, 2021, 9 p.m. N/A N/A N/A 9.0 ppb (9) N/A 2.0 ppb (3) N/A N/A 15.0 μg/m3 (14) N/A 14.0
 
April 5, 2021, 8 p.m. N/A N/A N/A 8.0 ppb (8) N/A 2.0 ppb (3) N/A N/A N/A N/A 8.0
 
April 5, 2021, 7 p.m. N/A N/A N/A 8.0 ppb (8) N/A 2.0 ppb (3) N/A N/A N/A N/A 8.0
 
April 5, 2021, 6 p.m. N/A N/A N/A 16.0 ppb (16) N/A 2.0 ppb (3) N/A N/A 141.0 μg/m3 (94) N/A 94.0
 
April 5, 2021, 5 p.m. N/A N/A N/A 34.0 ppb (33) N/A 0.0 ppb (0) N/A N/A 129.0 μg/m3 (88) N/A 88.0
 
April 5, 2021, 4 p.m. N/A N/A N/A 35.0 ppb (34) N/A 0.0 ppb (0) N/A N/A 138.0 μg/m3 (93) N/A 93.0
 
April 5, 2021, 3 p.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) N/A N/A 171.0 μg/m3 (109) N/A 109.0
 
April 5, 2021, 2 p.m. N/A N/A N/A 31.0 ppb (30) N/A 1.0 ppb (2) N/A N/A 123.0 μg/m3 (85) N/A 85.0
 
April 5, 2021, 1 p.m. N/A N/A N/A 30.0 ppb (29) N/A 1.0 ppb (2) N/A N/A 114.0 μg/m3 (81) N/A 81.0
 
April 5, 2021, noon N/A N/A N/A 32.0 ppb (31) N/A 2.0 ppb (3) N/A N/A 80.0 μg/m3 (64) N/A 64.0
 
April 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 80.0 μg/m3 (64) N/A 64.0
 
April 5, 2021, 1 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A N/A 114.0 μg/m3 (81) N/A 81.0
 
April 5, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 55.0 μg/m3 (51) N/A 51.0
 
April 4, 2021, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 53.0 μg/m3 (50) N/A 50.0
 
April 4, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (16) N/A 16.0
 
April 4, 2021, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 5.0
 
April 4, 2021, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
April 4, 2021, 7 p.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) N/A N/A N/A N/A 7.0
 
April 4, 2021, 6 p.m. N/A N/A N/A 16.0 ppb (16) N/A 2.0 ppb (3) N/A N/A N/A N/A 16.0
 
April 4, 2021, 5 p.m. N/A N/A N/A 25.0 ppb (24) N/A 2.0 ppb (3) N/A N/A N/A N/A 24.0
 
April 4, 2021, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (2) N/A N/A N/A N/A 18.0
 
April 4, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 47.0 μg/m3 (44) N/A 44.0
 
April 4, 2021, 2 p.m. N/A N/A N/A 25.0 ppb (24) N/A 1.0 ppb (2) N/A N/A 63.0 μg/m3 (55) N/A 55.0
 
April 4, 2021, 1 p.m. N/A N/A N/A 25.0 ppb (24) N/A 1.0 ppb (2) N/A N/A 57.0 μg/m3 (52) N/A 52.0
 
April 4, 2021, noon N/A N/A N/A 28.0 ppb (27) N/A 1.0 ppb (2) N/A N/A 27.0 μg/m3 (25) N/A 27.0
 
April 4, 2021, 11 a.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) N/A N/A 37.0 μg/m3 (35) N/A 35.0
 
April 4, 2021, 10 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) N/A N/A 42.0 μg/m3 (39) N/A 39.0
 
April 4, 2021, 9 a.m. N/A N/A N/A 22.0 ppb (21) N/A 1.0 ppb (2) N/A N/A 54.0 μg/m3 (50) N/A 50.0
 
April 4, 2021, 8 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) N/A N/A 49.0 μg/m3 (46) N/A 46.0
 
April 4, 2021, 7 a.m. N/A N/A N/A 25.0 ppb (24) N/A 0.0 ppb (0) N/A N/A 37.0 μg/m3 (35) N/A 35.0
 
April 4, 2021, 6 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) N/A N/A 66.0 μg/m3 (57) N/A 57.0
 
April 4, 2021, 5 a.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) N/A N/A 26.0 μg/m3 (25) N/A 25.0
 
April 4, 2021, 4 a.m. N/A N/A N/A 36.0 ppb (34) N/A 0.0 ppb (0) N/A N/A 66.0 μg/m3 (57) N/A 57.0
 
April 4, 2021, 3 a.m. N/A N/A N/A 30.0 ppb (29) N/A 1.0 ppb (2) N/A N/A 71.0 μg/m3 (59) N/A 59.0
 
April 4, 2021, 2 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) N/A N/A 124.0 μg/m3 (86) N/A 86.0
 
April 4, 2021, 1 a.m. N/A N/A N/A 11.0 ppb (11) N/A 1.0 ppb (2) N/A N/A 219.0 μg/m3 (133) N/A 133.0
 
April 4, 2021, midnight N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (19) N/A 19.0
 
April 3, 2021, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A 17.0 μg/m3 (16) N/A 16.0
 
April 3, 2021, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (17) N/A 17.0
 
April 3, 2021, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 7.0 μg/m3 (7) N/A 7.0
 
April 3, 2021, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 6.0
 
April 3, 2021, 7 p.m. N/A N/A N/A 9.0 ppb (9) N/A 3.0 ppb (5) N/A N/A 10.0 μg/m3 (10) N/A 10.0
 
April 3, 2021, 6 p.m. N/A N/A N/A 13.0 ppb (13) N/A 3.0 ppb (5) N/A N/A 41.0 μg/m3 (38) N/A 38.0
 
April 3, 2021, 5 p.m. N/A N/A N/A 13.0 ppb (13) N/A 4.0 ppb (6) N/A N/A 73.0 μg/m3 (60) N/A 60.0
 
April 3, 2021, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A 3.0 ppb (5) N/A N/A 74.0 μg/m3 (61) N/A 61.0
 
April 3, 2021, 3 p.m. N/A N/A N/A 21.0 ppb (20) N/A 3.0 ppb (5) N/A N/A 72.0 μg/m3 (60) N/A 60.0
 
April 3, 2021, 2 p.m. N/A N/A N/A 21.0 ppb (20) N/A 1.0 ppb (2) N/A N/A 46.0 μg/m3 (43) N/A 43.0
 
April 3, 2021, 1 p.m. N/A N/A N/A 17.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 33.0 μg/m3 (31) N/A 31.0
 
April 3, 2021, noon N/A N/A N/A 16.0 ppb (16) N/A 1.0 ppb (2) N/A N/A 24.0 μg/m3 (23) N/A 23.0
 
April 3, 2021, 11 a.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 11.0 μg/m3 (11) N/A 17.0
 
April 3, 2021, 10 a.m. N/A N/A N/A 16.0 ppb (16) N/A 2.0 ppb (3) N/A N/A 11.0 μg/m3 (11) N/A 16.0
 
April 3, 2021, 9 a.m. N/A N/A N/A 13.0 ppb (13) N/A 2.0 ppb (3) N/A N/A 13.0 μg/m3 (13) N/A 13.0
 
April 3, 2021, 8 a.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) N/A N/A 27.0 μg/m3 (25) N/A 25.0
 
April 3, 2021, 7 a.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 27.0 μg/m3 (25) N/A 25.0
 
April 3, 2021, 6 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) N/A N/A 34.0 μg/m3 (32) N/A 32.0
 
April 3, 2021, 5 a.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 54.0 μg/m3 (50) N/A 50.0
 
April 3, 2021, 4 a.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) N/A N/A 92.0 μg/m3 (70) N/A 70.0
 
April 3, 2021, 3 a.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) N/A N/A 48.0 μg/m3 (45) N/A 45.0
 
April 3, 2021, 2 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A N/A 56.0 μg/m3 (52) N/A 52.0
 
April 3, 2021, 1 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A N/A 63.0 μg/m3 (55) N/A 55.0
 
April 3, 2021, midnight N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 53.0 μg/m3 (50) N/A 50.0
 
April 2, 2021, 11 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A N/A 24.0 μg/m3 (23) N/A 23.0
 
April 2, 2021, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A 15.0 μg/m3 (14) N/A 14.0
 
April 2, 2021, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A 10.0 μg/m3 (10) N/A 10.0
 
April 2, 2021, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (22) N/A 22.0
 
April 2, 2021, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A 23.0 μg/m3 (22) N/A 22.0
 
April 2, 2021, 5 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A N/A 18.0 μg/m3 (17) N/A 17.0
 
April 2, 2021, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (16) N/A 16.0
 
April 2, 2021, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A 22.0 μg/m3 (21) N/A 21.0
 
April 2, 2021, 2 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (22) N/A 22.0
 
April 2, 2021, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) N/A N/A 19.0 μg/m3 (18) N/A 18.0
 
April 2, 2021, noon N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) N/A N/A 26.0 μg/m3 (25) N/A 25.0
 
April 2, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) N/A 25.0
 
April 2, 2021, 6 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 20.0 ppb (19) N/A 21.0 μg/m3 (20) N/A 20.0
 
April 2, 2021, 5 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) N/A 16.0 μg/m3 (15) N/A 19.0
 
April 2, 2021, 4 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 20.0 ppb (19) N/A 41.0 μg/m3 (38) N/A 38.0
 
April 2, 2021, 3 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 17.0 ppb (16) N/A 131.0 μg/m3 (89) N/A 89.0
 
April 2, 2021, 2 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) N/A 179.0 μg/m3 (113) N/A 113.0
 
April 2, 2021, 1 a.m. N/A N/A N/A 8.0 ppb (8) N/A -1.0 ppb (0) 27.0 ppb (25) N/A 215.0 μg/m3 (131) N/A 131.0
 
April 2, 2021, midnight N/A N/A N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
April 1, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) N/A 61.0 μg/m3 (54) N/A 54.0
 
April 1, 2021, 9 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 43.0 ppb (40) N/A 57.0 μg/m3 (52) N/A 52.0
 
April 1, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 51.0 ppb (48) N/A 133.0 μg/m3 (90) N/A 90.0
 
April 1, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 46.0 ppb (43) N/A 103.0 μg/m3 (75) N/A 75.0
 
April 1, 2021, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) N/A 88.0 μg/m3 (68) N/A 68.0
 
April 1, 2021, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) N/A 59.0 μg/m3 (53) N/A 53.0
 
April 1, 2021, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) N/A 41.0 μg/m3 (38) N/A 40.0
 
April 1, 2021, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 38.0 ppb (36) N/A 43.0 μg/m3 (40) N/A 40.0
 
April 1, 2021, 2 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 36.0 ppb (34) N/A 15.0 μg/m3 (14) N/A 34.0
 
April 1, 2021, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 34.0 ppb (32) N/A 22.0 μg/m3 (21) N/A 32.0
 
April 1, 2021, noon N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 33.0 ppb (31) N/A 69.0 μg/m3 (58) N/A 58.0
 
April 1, 2021, 11 a.m. N/A N/A N/A 34.0 ppb (33) N/A 0.0 ppb (0) 4.0 ppb (4) N/A N/A N/A 33.0
 
April 1, 2021, 10 a.m. N/A N/A N/A 15.0 ppb (15) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 98.0 μg/m3 (73) N/A 73.0
 
April 1, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 98.0 μg/m3 (73) N/A 73.0
 
April 1, 2021, 1 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 45.0 ppb (42) N/A 109.0 μg/m3 (78) N/A 78.0
 
April 1, 2021, midnight N/A N/A N/A 11.0 ppb (11) N/A N/A 47.0 ppb (44) N/A 36.0 μg/m3 (34) N/A 44.0
 
March 31, 2021, 11 p.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 51.0 ppb (48) N/A 106.0 μg/m3 (77) N/A 77.0
 
March 31, 2021, 10 p.m. N/A N/A N/A 11.0 ppb (11) N/A 1.0 ppb (2) 56.0 ppb (55) N/A N/A N/A 55.0
 
March 31, 2021, 9 p.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 60.0 ppb (68) N/A N/A N/A 68.0
 
March 31, 2021, 8 p.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 69.0 ppb (97) N/A 54.0 μg/m3 (50) N/A 97.0
 
March 31, 2021, 7 p.m. N/A N/A N/A 11.0 ppb (11) N/A 1.0 ppb (2) 80.0 ppb (106) N/A 56.0 μg/m3 (52) N/A 106.0
 
March 31, 2021, 6 p.m. N/A N/A N/A 27.0 ppb (26) N/A 2.0 ppb (3) 96.0 ppb (115) N/A 99.0 μg/m3 (73) N/A 115.0
 
March 31, 2021, 5 p.m. N/A N/A N/A 26.0 ppb (25) N/A 0.0 ppb (0) 71.0 ppb (101) N/A 80.0 μg/m3 (64) N/A 101.0
 
March 31, 2021, 4 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A 54.0 ppb (50) N/A 119.0 μg/m3 (83) N/A 83.0
 
March 31, 2021, 3 p.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 19.0 ppb (18) N/A 136.0 μg/m3 (92) N/A 92.0
 
March 31, 2021, 2 p.m. N/A N/A N/A 36.0 ppb (34) N/A 1.0 ppb (2) 6.0 ppb (6) N/A 136.0 μg/m3 (92) N/A 92.0
 
March 31, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 48.0 μg/m3 (45) N/A 45.0