AQSQID: 261630093

Site Name: Eliza Howell- Roadway

Location: Detroit (Schoolcraft St), MI

Reporting: True, Located: True

Current AQI: 37.0

Detroit (Schoolcraft St) MI, US: 42.38599, -83.266319

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 28, 2020, 3 p.m. 11.6 ppb (11) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.5 ppb (6) N/A 8.9 μg/m3 (37) 37.0
 
March 28, 2020, 2 p.m. 8.7 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.5 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
March 28, 2020, 1 p.m. 7.5 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, noon 8.0 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.5 ppb (6) N/A 8.9 μg/m3 (37) 37.0
 
March 28, 2020, 11 a.m. 8.4 ppb (8) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 10 a.m. 7.0 ppb (6) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 28, 2020, 9 a.m. 6.6 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 8 a.m. 6.8 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 28, 2020, 6 a.m. 6.9 ppb (6) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 10.9 μg/m3 (45) 45.0
 
March 28, 2020, 5 a.m. 8.3 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 12.9 μg/m3 (52) 52.0
 
March 28, 2020, 4 a.m. 11.8 ppb (11) 2.3 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 10.1 μg/m3 (42) 42.0
 
March 28, 2020, 3 a.m. 14.6 ppb (14) 2.7 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.5 ppb (6) N/A 16.8 μg/m3 (60) 60.0
 
March 28, 2020, 2 a.m. 18.1 ppb (17) 4.0 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.5 ppb (6) N/A 13.1 μg/m3 (52) 52.0
 
March 28, 2020, 1 a.m. 16.5 ppb (15) 3.1 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.5 ppb (6) N/A 11.1 μg/m3 (46) 46.0
 
March 28, 2020, midnight 18.6 ppb (17) 5.1 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.5 ppb (6) N/A 8.1 μg/m3 (34) 34.0
 
March 27, 2020, 11 p.m. 21.5 ppb (20) 7.8 ppb (7) N/A 14.0 ppb (13) N/A N/A N/A 0.6 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 10 p.m. 21.8 ppb (20) 8.6 ppb (8) N/A 13.0 ppb (12) N/A N/A N/A 0.6 ppb (7) N/A 10.9 μg/m3 (45) 45.0
 
March 27, 2020, 9 p.m. 26.4 ppb (24) 12.2 ppb (11) N/A 14.0 ppb (13) N/A N/A N/A 0.6 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
March 27, 2020, 8 p.m. 31.3 ppb (29) 17.5 ppb (16) N/A 14.0 ppb (13) N/A N/A N/A 0.6 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
March 27, 2020, 7 p.m. 38.9 ppb (36) 21.7 ppb (20) N/A 17.0 ppb (16) N/A N/A N/A 0.6 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
March 27, 2020, 6 p.m. 36.5 ppb (34) 21.3 ppb (20) N/A 15.0 ppb (14) N/A N/A N/A 0.6 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
March 27, 2020, 5 p.m. 23.0 ppb (21) 10.6 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A 0.5 ppb (6) N/A 14.0 μg/m3 (54) 54.0
 
March 27, 2020, 4 p.m. 32.4 ppb (30) 17.4 ppb (16) N/A 15.0 ppb (14) N/A N/A N/A 0.6 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
March 27, 2020, 3 p.m. 18.8 ppb (17) 8.5 ppb (8) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 11.1 μg/m3 (46) 46.0
 
March 27, 2020, 2 p.m. 22.8 ppb (21) 10.7 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A 0.5 ppb (6) N/A 16.8 μg/m3 (60) 60.0
 
March 27, 2020, 1 p.m. 11.6 ppb (11) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 10.2 μg/m3 (42) 42.0
 
March 27, 2020, noon 11.8 ppb (11) 2.9 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 8.1 μg/m3 (34) 34.0
 
March 27, 2020, 11 a.m. 8.2 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 10 a.m. 7.0 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 9 a.m. 7.5 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 10.9 μg/m3 (45) 45.0
 
March 27, 2020, 8 a.m. 5.0 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 6.1 μg/m3 (25) 25.0
 
March 27, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 6 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 5 a.m. 4.8 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
March 27, 2020, 4 a.m. 5.5 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
March 27, 2020, 3 a.m. 5.4 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
March 27, 2020, 2 a.m. 7.7 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 5.9 μg/m3 (25) 25.0
 
March 27, 2020, 1 a.m. 10.2 ppb (9) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 8.9 μg/m3 (37) 37.0
 
March 27, 2020, midnight 8.0 ppb (7) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 13.9 μg/m3 (54) 54.0
 
March 26, 2020, 11 p.m. 12.6 ppb (12) 2.7 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.5 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
March 26, 2020, 10 p.m. 16.5 ppb (15) 5.4 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.5 ppb (6) N/A 13.1 μg/m3 (52) 52.0
 
March 26, 2020, 9 p.m. 15.2 ppb (14) 6.1 ppb (6) N/A 9.0 ppb (8) N/A N/A N/A 0.5 ppb (6) N/A 15.9 μg/m3 (58) 58.0
 
March 26, 2020, 8 p.m. 21.9 ppb (20) 10.6 ppb (10) N/A 11.0 ppb (10) N/A N/A N/A 0.5 ppb (6) N/A 14.1 μg/m3 (54) 54.0
 
March 26, 2020, 7 p.m. 27.4 ppb (25) 15.3 ppb (14) N/A 12.0 ppb (11) N/A N/A N/A 0.5 ppb (6) N/A 10.1 μg/m3 (42) 42.0
 
March 26, 2020, 6 p.m. 9.1 ppb (8) 4.2 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 26, 2020, 5 p.m. 22.1 ppb (20) 10.5 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A 0.5 ppb (6) N/A 10.9 μg/m3 (45) 45.0
 
March 26, 2020, 4 p.m. 23.8 ppb (22) 11.6 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A 0.5 ppb (6) N/A 13.9 μg/m3 (54) 54.0
 
March 26, 2020, 3 p.m. 29.7 ppb (28) 16.4 ppb (15) N/A 13.0 ppb (12) N/A N/A N/A 0.5 ppb (6) N/A 14.0 μg/m3 (54) 54.0
 
March 26, 2020, 2 p.m. 45.5 ppb (42) 29.3 ppb (27) N/A 16.0 ppb (15) N/A N/A N/A 0.5 ppb (6) N/A 15.9 μg/m3 (58) 58.0
 
March 26, 2020, 1 p.m. 51.3 ppb (48) 31.1 ppb (29) N/A 20.0 ppb (19) N/A N/A N/A 0.6 ppb (7) N/A 17.0 μg/m3 (61) 61.0
 
March 26, 2020, noon 56.5 ppb (53) 32.2 ppb (30) N/A 24.0 ppb (22) N/A N/A N/A 0.5 ppb (6) N/A 15.1 μg/m3 (57) 57.0
 
March 26, 2020, 11 a.m. 64.7 ppb (61) 38.7 ppb (36) N/A 26.0 ppb (24) N/A N/A N/A 0.7 ppb (8) N/A 20.8 μg/m3 (69) 69.0
 
March 26, 2020, 10 a.m. 71.3 ppb (68) 43.3 ppb (40) N/A 28.0 ppb (26) N/A N/A N/A 0.8 ppb (9) N/A 22.0 μg/m3 (71) 71.0
 
March 26, 2020, 9 a.m. 48.7 ppb (45) 24.8 ppb (23) N/A 24.0 ppb (22) N/A N/A N/A 0.7 ppb (8) N/A 19.1 μg/m3 (65) 65.0
 
March 26, 2020, 8 a.m. 38.6 ppb (36) 16.8 ppb (16) N/A 22.0 ppb (20) N/A N/A N/A 0.5 ppb (6) N/A 18.0 μg/m3 (63) 63.0
 
March 26, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
March 26, 2020, 6 a.m. 18.1 ppb (17) 4.4 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) N/A 20.9 μg/m3 (69) 69.0
 
March 26, 2020, 5 a.m. 20.8 ppb (19) 4.1 ppb (4) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 20.0 μg/m3 (67) 67.0
 
March 26, 2020, 4 a.m. 25.3 ppb (23) 6.3 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.5 ppb (6) N/A 25.8 μg/m3 (79) 79.0
 
March 26, 2020, 3 a.m. 34.0 ppb (31) 9.7 ppb (9) N/A 24.0 ppb (22) N/A N/A N/A 0.6 ppb (7) N/A 25.0 μg/m3 (78) 78.0
 
March 26, 2020, 2 a.m. 34.1 ppb (32) 10.6 ppb (10) N/A 24.0 ppb (22) N/A N/A N/A 0.6 ppb (7) N/A 25.0 μg/m3 (78) 78.0
 
March 26, 2020, 1 a.m. 26.1 ppb (24) 8.2 ppb (8) N/A 18.0 ppb (17) N/A N/A N/A 0.6 ppb (7) N/A 21.1 μg/m3 (69) 69.0
 
March 26, 2020, midnight 37.4 ppb (35) 14.1 ppb (13) N/A 23.0 ppb (21) N/A N/A N/A 0.7 ppb (8) N/A 12.2 μg/m3 (50) 50.0
 
March 25, 2020, 11 p.m. 22.5 ppb (21) 9.0 ppb (8) N/A 14.0 ppb (13) N/A N/A N/A 0.6 ppb (7) N/A 9.1 μg/m3 (38) 38.0
 
March 25, 2020, 10 p.m. 26.4 ppb (24) 12.8 ppb (12) N/A 14.0 ppb (13) N/A N/A N/A 0.6 ppb (7) N/A 13.9 μg/m3 (54) 54.0
 
March 25, 2020, 9 p.m. 28.6 ppb (26) 14.6 ppb (14) N/A 14.0 ppb (13) N/A N/A N/A 0.6 ppb (7) N/A 15.0 μg/m3 (56) 56.0
 
March 25, 2020, 8 p.m. 31.6 ppb (29) 15.9 ppb (15) N/A 16.0 ppb (15) N/A N/A N/A 0.6 ppb (7) N/A 12.1 μg/m3 (50) 50.0
 
March 25, 2020, 7 p.m. 37.0 ppb (34) 20.4 ppb (19) N/A 17.0 ppb (16) N/A N/A N/A 0.6 ppb (7) N/A 16.9 μg/m3 (60) 60.0
 
March 25, 2020, 6 p.m. 37.7 ppb (35) 21.3 ppb (20) N/A 17.0 ppb (16) N/A N/A N/A 0.6 ppb (7) N/A 17.0 μg/m3 (61) 61.0
 
March 25, 2020, 5 p.m. 42.3 ppb (39) 23.8 ppb (22) N/A 19.0 ppb (18) N/A N/A N/A 0.6 ppb (7) N/A 15.1 μg/m3 (57) 57.0
 
March 25, 2020, 4 p.m. 46.6 ppb (43) 28.9 ppb (27) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) N/A 12.1 μg/m3 (50) 50.0
 
March 25, 2020, 3 p.m. 23.4 ppb (22) 11.9 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 19.8 μg/m3 (67) 67.0
 
March 25, 2020, 2 p.m. 37.1 ppb (34) 20.6 ppb (19) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 21.9 μg/m3 (71) 71.0
 
March 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 11.3 μg/m3 (47) 47.0
 
March 25, 2020, noon N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 15.9 μg/m3 (58) 58.0
 
March 25, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 16.0 μg/m3 (59) 59.0
 
March 25, 2020, 10 a.m. 30.0 ppb (28) 13.6 ppb (13) N/A 16.0 ppb (15) N/A N/A N/A 0.5 ppb (6) N/A 10.2 μg/m3 (42) 42.0
 
March 25, 2020, 9 a.m. 17.6 ppb (16) 6.4 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 25, 2020, 8 a.m. 14.2 ppb (13) 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
March 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 25, 2020, 6 a.m. 9.3 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 8.9 μg/m3 (37) 37.0
 
March 25, 2020, 5 a.m. 8.6 ppb (8) -0.1 ppb (0) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 25, 2020, 4 a.m. 10.7 ppb (10) 0.1 ppb (0) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 25, 2020, 3 a.m. 11.5 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 10.9 μg/m3 (45) 45.0
 
March 25, 2020, 2 a.m. 14.1 ppb (13) 2.2 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 13.9 μg/m3 (54) 54.0
 
March 25, 2020, 1 a.m. 14.8 ppb (14) 3.6 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
March 25, 2020, midnight 19.5 ppb (18) 5.2 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) N/A 15.9 μg/m3 (58) 58.0
 
March 24, 2020, 11 p.m. 18.0 ppb (17) 5.3 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
March 24, 2020, 10 p.m. 15.3 ppb (14) 4.9 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 15.1 μg/m3 (57) 57.0
 
March 24, 2020, 9 p.m. 19.6 ppb (18) 7.7 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 4.3 μg/m3 (18) 18.0
 
March 24, 2020, 8 p.m. 22.4 ppb (21) 10.2 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 12.8 μg/m3 (52) 52.0
 
March 24, 2020, 7 p.m. 28.1 ppb (26) 12.9 ppb (12) N/A 15.0 ppb (14) N/A N/A N/A 0.5 ppb (6) N/A 17.9 μg/m3 (63) 63.0
 
March 24, 2020, 6 p.m. 46.9 ppb (43) 24.1 ppb (22) N/A 23.0 ppb (21) N/A N/A N/A 0.6 ppb (7) N/A N/A 43.0
 
March 24, 2020, 5 p.m. 53.0 ppb (49) 29.4 ppb (27) N/A 24.0 ppb (22) N/A N/A N/A 0.6 ppb (7) N/A N/A 49.0
 
March 24, 2020, 4 p.m. 60.5 ppb (57) 36.1 ppb (33) N/A 24.0 ppb (22) N/A N/A N/A 0.5 ppb (6) N/A N/A 57.0
 
March 24, 2020, 3 p.m. 49.2 ppb (46) 28.9 ppb (27) N/A 20.0 ppb (19) N/A N/A N/A 0.5 ppb (6) N/A N/A 46.0
 
March 24, 2020, 2 p.m. 58.8 ppb (55) 33.3 ppb (31) N/A 26.0 ppb (24) N/A N/A N/A 0.5 ppb (6) N/A N/A 55.0
 
March 24, 2020, 1 p.m. 44.7 ppb (41) 23.6 ppb (22) N/A 21.0 ppb (19) N/A N/A N/A 0.5 ppb (6) N/A N/A 41.0
 
March 24, 2020, noon 81.7 ppb (79) 49.9 ppb (46) N/A 32.0 ppb (30) N/A N/A N/A 0.7 ppb (8) N/A N/A 79.0
 
March 24, 2020, 11 a.m. 30.1 ppb (28) 14.0 ppb (13) N/A 16.0 ppb (15) N/A N/A N/A 0.5 ppb (6) N/A N/A 28.0
 
March 24, 2020, 10 a.m. 30.1 ppb (28) 13.2 ppb (12) N/A 17.0 ppb (16) N/A N/A N/A 0.5 ppb (6) N/A N/A 28.0
 
March 24, 2020, 9 a.m. 13.7 ppb (13) 3.2 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A N/A 13.0
 
March 24, 2020, 8 a.m. 21.4 ppb (20) 7.5 ppb (7) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) N/A N/A 20.0
 
March 24, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A N/A 4.0
 
March 24, 2020, 6 a.m. 3.3 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A N/A 4.0
 
March 24, 2020, 5 a.m. 5.7 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 5.0
 
March 24, 2020, 4 a.m. 4.6 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A N/A 4.0
 
March 24, 2020, 3 a.m. 10.4 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A N/A 10.0
 
March 24, 2020, 2 a.m. 13.1 ppb (12) 4.3 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A N/A 12.0
 
March 24, 2020, 1 a.m. 12.7 ppb (12) 4.8 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 36.2 μg/m3 (102) 102.0
 
March 24, 2020, midnight 7.5 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 14.9 μg/m3 (56) 56.0
 
March 23, 2020, 11 p.m. 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 10.1 μg/m3 (42) 42.0
 
March 23, 2020, 10 p.m. 4.3 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
March 23, 2020, 9 p.m. 8.7 ppb (8) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 23, 2020, 8 p.m. 13.5 ppb (12) 5.5 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
March 23, 2020, 7 p.m. 10.7 ppb (10) 4.6 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 10.1 μg/m3 (42) 42.0
 
March 23, 2020, 6 p.m. 9.4 ppb (9) 3.3 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
March 23, 2020, 5 p.m. 13.9 ppb (13) 4.4 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 15.9 μg/m3 (58) 58.0
 
March 23, 2020, 4 p.m. 31.3 ppb (29) 16.5 ppb (15) N/A 15.0 ppb (14) N/A N/A N/A 0.5 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
March 23, 2020, 3 p.m. 38.7 ppb (36) 20.6 ppb (19) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) N/A 20.8 μg/m3 (69) 69.0
 
March 23, 2020, 2 p.m. 36.9 ppb (34) 18.6 ppb (17) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) N/A 13.2 μg/m3 (53) 53.0
 
March 23, 2020, 1 p.m. 28.2 ppb (26) 11.8 ppb (11) N/A 16.0 ppb (15) N/A N/A N/A 0.4 ppb (4) N/A 16.9 μg/m3 (60) 60.0
 
March 23, 2020, noon 16.3 ppb (15) 5.3 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 9.2 μg/m3 (38) 38.0
 
March 23, 2020, 11 a.m. 10.8 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
March 23, 2020, 10 a.m. 8.1 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
March 23, 2020, 9 a.m. 8.6 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
March 23, 2020, 8 a.m. 7.1 ppb (7) -0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 23, 2020, 6 a.m. 12.7 ppb (12) 1.6 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) N/A 9.9 μg/m3 (41) 41.0
 
March 23, 2020, 5 a.m. 15.2 ppb (14) 2.8 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 23, 2020, 4 a.m. 10.0 ppb (9) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
March 23, 2020, 3 a.m. 9.2 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 23, 2020, 2 a.m. 14.5 ppb (13) 2.9 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 23, 2020, 1 a.m. 12.9 ppb (12) 3.6 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
March 23, 2020, midnight 12.5 ppb (12) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 11 p.m. 7.6 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 10 p.m. 14.8 ppb (14) 5.0 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 4.1 μg/m3 (17) 17.0
 
March 22, 2020, 9 p.m. 13.0 ppb (12) 4.7 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 22, 2020, 8 p.m. 11.4 ppb (11) 4.7 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
March 22, 2020, 7 p.m. 11.9 ppb (11) 5.1 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
March 22, 2020, 6 p.m. 11.4 ppb (11) 5.7 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
March 22, 2020, 5 p.m. 11.4 ppb (11) 4.8 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 10.1 μg/m3 (42) 42.0
 
March 22, 2020, 4 p.m. 10.5 ppb (10) 4.3 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.1 μg/m3 (30) 30.0
 
March 22, 2020, 3 p.m. 11.6 ppb (11) 5.6 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 22, 2020, 2 p.m. 17.3 ppb (16) 7.2 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2020, 1 p.m. 28.5 ppb (26) 13.0 ppb (12) N/A 15.0 ppb (14) N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, noon 24.2 ppb (22) 4.9 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A 0.4 ppb (4) N/A 6.1 μg/m3 (25) 25.0
 
March 22, 2020, 11 a.m. 22.7 ppb (21) 2.2 ppb (2) N/A 21.0 ppb (19) N/A N/A N/A 0.4 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
March 22, 2020, 10 a.m. 19.2 ppb (18) 0.6 ppb (1) N/A 19.0 ppb (18) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 9 a.m. 16.4 ppb (15) 0.9 ppb (1) N/A 16.0 ppb (15) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 8 a.m. 12.5 ppb (12) 0.1 ppb (0) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2020, 6 a.m. 10.3 ppb (10) -0.1 ppb (0) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 5 a.m. 8.8 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 10.9 μg/m3 (45) 45.0
 
March 22, 2020, 4 a.m. 9.4 ppb (9) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 22, 2020, 3 a.m. 10.0 ppb (9) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 22, 2020, 2 a.m. 5.3 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 22, 2020, 1 a.m. 7.2 ppb (7) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 22, 2020, midnight 14.1 ppb (13) 3.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 6.1 μg/m3 (25) 25.0
 
March 21, 2020, 11 p.m. 6.0 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 21, 2020, 10 p.m. 5.5 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2020, 9 p.m. 8.9 ppb (8) 4.1 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 21, 2020, 8 p.m. 7.6 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 21, 2020, 7 p.m. 6.9 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 21, 2020, 6 p.m. 4.7 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 21, 2020, 5 p.m. 9.2 ppb (9) 4.9 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
March 21, 2020, 4 p.m. 6.8 ppb (6) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 4.9 μg/m3 (20) 20.0