AQSQID: 550790026

Site Name: Milwaukee Ser Dnr

Location: Milwaukee (N 2nd St), WI

Reporting: True, Located: True

Current AQI: 40.0

Milwaukee (N 2nd St) WI, US: 43.0611, -87.9125

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 24, 2019, midnight 11.3 ppb (10) 1.6 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 13.0 μg/m3 (12) 9.7 μg/m3 (40) 40.0
 
Jan. 23, 2019, 11 p.m. 12.6 ppb (12) 1.3 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 10.0 μg/m3 (9) 7.4 μg/m3 (31) 31.0
 
Jan. 23, 2019, 10 p.m. 11.7 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 11.0 μg/m3 (10) 8.1 μg/m3 (34) 34.0
 
Jan. 23, 2019, 9 p.m. 12.5 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 14.0 μg/m3 (13) 9.5 μg/m3 (40) 40.0
 
Jan. 23, 2019, 8 p.m. 12.8 ppb (12) 3.6 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 15.0 μg/m3 (14) 10.1 μg/m3 (42) 42.0
 
Jan. 23, 2019, 7 p.m. 18.0 ppb (17) 6.2 ppb (6) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 15.0 μg/m3 (14) 10.3 μg/m3 (43) 43.0
 
Jan. 23, 2019, 6 p.m. 15.4 ppb (14) 4.9 ppb (5) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 18.0 μg/m3 (16) 12.5 μg/m3 (51) 51.0
 
Jan. 23, 2019, 5 p.m. 12.5 ppb (12) 4.1 ppb (4) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 16.0 μg/m3 (15) 12.2 μg/m3 (50) 50.0
 
Jan. 23, 2019, 4 p.m. 13.0 ppb (12) 4.1 ppb (4) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 15.0 μg/m3 (14) 12.0 μg/m3 (50) 50.0
 
Jan. 23, 2019, 3 p.m. 14.3 ppb (13) 3.6 ppb (3) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 13.0 μg/m3 (12) 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2019, 2 p.m. 36.2 ppb (34) 15.7 ppb (15) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 16.0 μg/m3 (15) 13.8 μg/m3 (54) 54.0
 
Jan. 23, 2019, 1 p.m. 22.4 ppb (21) 7.2 ppb (7) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 19.0 μg/m3 (17) 17.1 μg/m3 (61) 61.0
 
Jan. 23, 2019, noon 17.0 ppb (16) 2.5 ppb (2) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 21.0 μg/m3 (19) 19.7 μg/m3 (66) 66.0
 
Jan. 23, 2019, 11 a.m. 14.3 ppb (13) 1.4 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 22.0 μg/m3 (20) 22.1 μg/m3 (71) 71.0
 
Jan. 23, 2019, 10 a.m. 14.6 ppb (14) 1.7 ppb (2) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 24.0 μg/m3 (22) 23.7 μg/m3 (75) 75.0
 
Jan. 23, 2019, 9 a.m. 11.4 ppb (11) 1.3 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 24.0 μg/m3 (22) 23.3 μg/m3 (74) 74.0
 
Jan. 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 22.2 μg/m3 (72) 72.0
 
Jan. 23, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (14) N/A 21.0 μg/m3 (19) 19.2 μg/m3 (65) 65.0
 
Jan. 23, 2019, 6 a.m. 15.3 ppb (14) 1.6 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 18.0 μg/m3 (16) 16.4 μg/m3 (59) 59.0
 
Jan. 23, 2019, 5 a.m. 26.5 ppb (25) 3.8 ppb (4) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 8.0 ppb (6) N/A 20.0 μg/m3 (18) 18.2 μg/m3 (63) 63.0
 
Jan. 23, 2019, 3 a.m. 50.5 ppb (47) 17.6 ppb (16) N/A 33.0 ppb (31) N/A 0.0 ppb (0) 1.0 ppb (1) N/A 22.0 μg/m3 (20) 19.5 μg/m3 (66) 66.0
 
Jan. 23, 2019, 2 a.m. 53.3 ppb (49) 19.2 ppb (18) N/A 34.0 ppb (31) N/A 0.0 ppb (0) 1.0 ppb (1) N/A 22.0 μg/m3 (20) 19.1 μg/m3 (65) 65.0
 
Jan. 23, 2019, 1 a.m. 70.0 ppb (67) 33.3 ppb (31) N/A 37.0 ppb (34) N/A 1.0 ppb (1) 1.0 ppb (1) N/A 19.0 μg/m3 (17) 16.4 μg/m3 (59) 67.0
 
Jan. 23, 2019, midnight 72.8 ppb (70) 35.3 ppb (33) N/A 37.0 ppb (34) N/A 1.0 ppb (1) 1.0 ppb (1) N/A 19.0 μg/m3 (17) 15.4 μg/m3 (57) 70.0
 
Jan. 22, 2019, 11 p.m. 58.3 ppb (55) 22.7 ppb (21) N/A 36.0 ppb (33) N/A 1.0 ppb (1) 1.0 ppb (1) N/A 18.0 μg/m3 (16) 13.6 μg/m3 (53) 55.0
 
Jan. 22, 2019, 10 p.m. 50.0 ppb (46) 16.5 ppb (15) N/A 33.0 ppb (31) N/A 1.0 ppb (1) 3.0 ppb (2) N/A N/A N/A 46.0
 
Jan. 22, 2019, 9 p.m. 47.5 ppb (44) 16.4 ppb (15) N/A 31.0 ppb (29) N/A 0.0 ppb (0) 6.0 ppb (5) N/A 17.0 μg/m3 (15) 12.1 μg/m3 (50) 50.0
 
Jan. 22, 2019, 8 p.m. 41.2 ppb (38) 13.1 ppb (12) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 10.0 ppb (8) N/A 17.0 μg/m3 (15) 11.7 μg/m3 (49) 49.0
 
Jan. 22, 2019, 7 p.m. 49.2 ppb (46) 18.3 ppb (17) N/A 31.0 ppb (29) N/A 0.0 ppb (0) 9.0 ppb (7) N/A 18.0 μg/m3 (16) 12.7 μg/m3 (51) 51.0
 
Jan. 22, 2019, 5 p.m. 36.5 ppb (34) 10.6 ppb (10) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 13.0 ppb (10) N/A 19.0 μg/m3 (17) 11.1 μg/m3 (46) 46.0
 
Jan. 22, 2019, 4 p.m. 29.7 ppb (28) 7.1 ppb (7) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2019, 9 a.m. 5.8 ppb (5) 0.2 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 10.0 μg/m3 (9) 7.3 μg/m3 (30) 30.0
 
Jan. 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 6.8 μg/m3 (28) 28.0
 
Jan. 22, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 28.0
 
Jan. 22, 2019, 6 a.m. 2.7 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 30.0
 
Jan. 22, 2019, 5 a.m. 3.3 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 30.0
 
Jan. 22, 2019, 3 a.m. 3.5 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 29.0
 
Jan. 22, 2019, 2 a.m. 4.3 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 29.0
 
Jan. 22, 2019, 1 a.m. 2.6 ppb (2) -0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) N/A 4.0 μg/m3 (4) 2.6 μg/m3 (11) 31.0
 
Jan. 22, 2019, midnight 3.9 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 30.0
 
Jan. 21, 2019, 11 p.m. 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 30.0
 
Jan. 21, 2019, 10 p.m. 4.6 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 3.0 μg/m3 (3) 2.1 μg/m3 (9) 28.0
 
Jan. 21, 2019, 9 p.m. 10.2 ppb (9) 1.6 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 25.0
 
Jan. 21, 2019, 8 p.m. 27.6 ppb (26) 7.1 ppb (7) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 12.0 μg/m3 (11) 6.4 μg/m3 (27) 27.0
 
Jan. 21, 2019, 7 p.m. 29.3 ppb (27) 9.7 ppb (9) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2019, 6 p.m. 30.0 ppb (28) 10.9 ppb (10) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 11.0 μg/m3 (10) 6.3 μg/m3 (26) 28.0
 
Jan. 21, 2019, 5 p.m. 36.9 ppb (34) 16.7 ppb (15) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 12.0 μg/m3 (11) 5.9 μg/m3 (25) 34.0
 
Jan. 21, 2019, 3 p.m. 47.7 ppb (44) 21.9 ppb (20) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 13.0 ppb (10) N/A 16.0 μg/m3 (15) 5.7 μg/m3 (24) 44.0
 
Jan. 21, 2019, 2 p.m. 50.7 ppb (47) 21.9 ppb (20) N/A 29.0 ppb (27) N/A 0.0 ppb (0) 10.0 ppb (8) N/A 21.0 μg/m3 (19) 6.0 μg/m3 (25) 47.0
 
Jan. 21, 2019, 1 p.m. 40.2 ppb (37) 10.3 ppb (10) N/A 30.0 ppb (28) N/A 0.0 ppb (0) 7.0 ppb (5) N/A 25.0 μg/m3 (23) 5.6 μg/m3 (23) 37.0
 
Jan. 21, 2019, noon 27.1 ppb (25) 3.5 ppb (3) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 12.0 ppb (9) N/A 17.0 μg/m3 (15) 4.6 μg/m3 (19) 25.0
 
Jan. 21, 2019, 10 a.m. 13.9 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 18.0
 
Jan. 21, 2019, 9 a.m. 11.4 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 8.0 μg/m3 (7) 3.5 μg/m3 (15) 20.0
 
Jan. 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A 12.0 μg/m3 (11) 4.8 μg/m3 (20) 22.0
 
Jan. 21, 2019, 5 a.m. 8.1 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 9.0 μg/m3 (8) 3.7 μg/m3 (15) 23.0
 
Jan. 21, 2019, 3 a.m. 8.7 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 11.0 μg/m3 (10) 4.5 μg/m3 (19) 22.0
 
Jan. 21, 2019, 1 a.m. 11.0 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 12.0 μg/m3 (11) 5.0 μg/m3 (21) 21.0
 
Jan. 21, 2019, midnight 7.3 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 14.0 μg/m3 (13) 4.4 μg/m3 (18) 23.0
 
Jan. 20, 2019, 11 p.m. 6.8 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 12.0 μg/m3 (11) 3.8 μg/m3 (16) 24.0
 
Jan. 20, 2019, 10 p.m. 4.8 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 11.0 μg/m3 (10) 3.7 μg/m3 (15) 26.0
 
Jan. 20, 2019, 9 p.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 3.2 μg/m3 (13) 27.0
 
Jan. 20, 2019, 8 p.m. 3.1 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 28.0
 
Jan. 20, 2019, 7 p.m. 3.5 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 10.0 μg/m3 (9) 2.6 μg/m3 (11) 28.0
 
Jan. 20, 2019, 6 p.m. 3.7 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 11.0 μg/m3 (10) 3.1 μg/m3 (13) 28.0
 
Jan. 20, 2019, 5 p.m. 4.4 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 12.0 μg/m3 (11) 3.6 μg/m3 (15) 27.0
 
Jan. 20, 2019, 4 p.m. 4.7 ppb (4) 1.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 11.0 μg/m3 (10) 3.6 μg/m3 (15) 27.0
 
Jan. 20, 2019, 3 p.m. 5.6 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 10.0 μg/m3 (9) 3.7 μg/m3 (15) 26.0
 
Jan. 20, 2019, 2 p.m. 6.6 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 10.0 μg/m3 (9) 3.8 μg/m3 (16) 25.0
 
Jan. 20, 2019, 1 p.m. 7.4 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 11.0 μg/m3 (10) 4.2 μg/m3 (18) 23.0
 
Jan. 20, 2019, noon 6.8 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 23.0
 
Jan. 20, 2019, 11 a.m. 6.9 ppb (6) 0.4 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 10.0 μg/m3 (9) 3.7 μg/m3 (15) 24.0
 
Jan. 20, 2019, 10 a.m. 6.5 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 24.0
 
Jan. 20, 2019, 9 a.m. 7.1 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 23.0
 
Jan. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 25.0
 
Jan. 20, 2019, 6 a.m. 3.9 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 8.0 μg/m3 (7) 3.2 μg/m3 (13) 26.0
 
Jan. 20, 2019, 5 a.m. 4.2 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 8.0 μg/m3 (7) 3.1 μg/m3 (13) 26.0
 
Jan. 20, 2019, 4 a.m. 4.6 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 8.0 μg/m3 (7) 3.2 μg/m3 (13) 26.0
 
Jan. 20, 2019, 3 a.m. 4.6 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 8.0 μg/m3 (7) 3.2 μg/m3 (13) 26.0
 
Jan. 20, 2019, 2 a.m. 5.9 ppb (5) 0.3 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 25.0
 
Jan. 20, 2019, 1 a.m. 4.3 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 27.0
 
Jan. 20, 2019, midnight 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 3.1 μg/m3 (13) 27.0
 
Jan. 19, 2019, 11 p.m. 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 27.0
 
Jan. 19, 2019, 10 p.m. 4.2 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 27.0
 
Jan. 19, 2019, 8 p.m. 7.1 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 7.0 μg/m3 (6) 3.5 μg/m3 (15) 26.0
 
Jan. 19, 2019, 7 p.m. 7.4 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 25.0
 
Jan. 19, 2019, 6 p.m. 8.4 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 25.0
 
Jan. 19, 2019, 5 p.m. 7.3 ppb (7) 1.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 7.0 μg/m3 (6) 3.5 μg/m3 (15) 25.0
 
Jan. 19, 2019, 4 p.m. 4.5 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 3.0 μg/m3 (3) 2.3 μg/m3 (10) 28.0
 
Jan. 19, 2019, 3 p.m. 7.6 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 8.0 μg/m3 (7) 3.5 μg/m3 (15) 24.0
 
Jan. 19, 2019, 2 p.m. 6.4 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 10.0 μg/m3 (9) 3.3 μg/m3 (14) 24.0
 
Jan. 19, 2019, 1 p.m. 7.4 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 23.0
 
Jan. 19, 2019, noon 6.3 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 8.0 μg/m3 (7) 3.1 μg/m3 (13) 24.0
 
Jan. 19, 2019, 11 a.m. 2.4 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 7.0 μg/m3 (6) 1.4 μg/m3 (6) 28.0
 
Jan. 19, 2019, 10 a.m. 2.2 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 8.0 μg/m3 (7) 1.5 μg/m3 (6) 28.0
 
Jan. 19, 2019, 9 a.m. 2.3 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 8.0 μg/m3 (7) 1.4 μg/m3 (6) 28.0
 
Jan. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 1.4 μg/m3 (6) 6.0
 
Jan. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 29.0
 
Jan. 19, 2019, 6 a.m. 3.1 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 29.0
 
Jan. 19, 2019, 5 a.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 4.0 μg/m3 (4) 1.2 μg/m3 (5) 30.0
 
Jan. 19, 2019, 4 a.m. 3.1 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 1.4 μg/m3 (6) 29.0
 
Jan. 19, 2019, 3 a.m. 3.2 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 5.0 μg/m3 (5) 1.8 μg/m3 (8) 30.0
 
Jan. 19, 2019, 2 a.m. 3.6 ppb (3) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 29.0
 
Jan. 19, 2019, 1 a.m. 3.6 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 3.0 μg/m3 (3) 2.1 μg/m3 (9) 28.0
 
Jan. 19, 2019, midnight 3.8 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 28.0
 
Jan. 18, 2019, 11 p.m. 5.2 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 28.0
 
Jan. 18, 2019, 10 p.m. 7.7 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 25.0
 
Jan. 18, 2019, 9 p.m. 6.3 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 25.0
 
Jan. 18, 2019, 6 p.m. 6.7 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 16.0 μg/m3 (15) 8.7 μg/m3 (36) 36.0
 
Jan. 18, 2019, 5 p.m. 9.5 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 16.0 μg/m3 (15) 9.3 μg/m3 (39) 39.0
 
Jan. 18, 2019, 4 p.m. 9.9 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2019, 3 p.m. 14.8 ppb (14) 3.2 ppb (3) N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 10.5 μg/m3 (44) 44.0
 
Jan. 18, 2019, 1 p.m. 24.2 ppb (22) 4.8 ppb (4) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 10.0 ppb (8) N/A 32.0 μg/m3 (29) 13.8 μg/m3 (54) 54.0
 
Jan. 18, 2019, noon 16.2 ppb (15) 1.9 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 25.0 μg/m3 (23) 13.1 μg/m3 (52) 52.0
 
Jan. 18, 2019, 11 a.m. 11.2 ppb (10) 0.8 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 21.0 μg/m3 (19) 12.6 μg/m3 (51) 51.0
 
Jan. 18, 2019, 10 a.m. 5.5 ppb (5) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 18.0 μg/m3 (16) 12.7 μg/m3 (51) 51.0
 
Jan. 18, 2019, 9 a.m. 5.0 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 18.0 μg/m3 (16) 13.1 μg/m3 (52) 52.0
 
Jan. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 13.6 μg/m3 (53) 53.0
 
Jan. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) N/A 19.0 μg/m3 (17) 14.1 μg/m3 (54) 54.0
 
Jan. 18, 2019, 5 a.m. 6.8 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 20.0 μg/m3 (18) 15.2 μg/m3 (57) 57.0
 
Jan. 18, 2019, 3 a.m. 10.6 ppb (10) 0.9 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 22.0 μg/m3 (20) 15.1 μg/m3 (57) 57.0
 
Jan. 18, 2019, 2 a.m. 14.0 ppb (13) 1.7 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 22.0 μg/m3 (20) 14.9 μg/m3 (56) 56.0
 
Jan. 18, 2019, 1 a.m. 13.6 ppb (13) 1.4 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 20.0 μg/m3 (18) 14.9 μg/m3 (56) 56.0
 
Jan. 17, 2019, 11 p.m. 18.7 ppb (17) 3.7 ppb (3) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 23.0 μg/m3 (21) 15.0 μg/m3 (56) 56.0
 
Jan. 17, 2019, 10 p.m. 22.2 ppb (21) 3.7 ppb (3) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 14.0 ppb (11) N/A 26.0 μg/m3 (24) 15.1 μg/m3 (57) 57.0
 
Jan. 17, 2019, 8 p.m. 20.1 ppb (19) 4.1 ppb (4) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 23.0 μg/m3 (21) 13.8 μg/m3 (54) 54.0
 
Jan. 17, 2019, 7 p.m. 12.4 ppb (11) 1.7 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 20.0 μg/m3 (18) 13.5 μg/m3 (53) 53.0
 
Jan. 17, 2019, 6 p.m. 7.4 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 18.0 μg/m3 (16) 13.0 μg/m3 (52) 52.0
 
Jan. 17, 2019, 5 p.m. 5.3 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 16.0 μg/m3 (15) 11.7 μg/m3 (49) 49.0
 
Jan. 17, 2019, 4 p.m. 5.4 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 13.0 μg/m3 (12) 9.5 μg/m3 (40) 40.0
 
Jan. 17, 2019, 2 p.m. 25.3 ppb (23) 4.3 ppb (4) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 15.0 ppb (12) N/A 15.0 μg/m3 (14) 10.6 μg/m3 (44) 44.0
 
Jan. 17, 2019, 1 p.m. 42.6 ppb (39) 10.3 ppb (10) N/A 32.0 ppb (30) N/A 0.0 ppb (0) 5.0 ppb (4) N/A 13.0 μg/m3 (12) 9.3 μg/m3 (39) 39.0
 
Jan. 17, 2019, noon 14.0 ppb (13) 0.6 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 11.0 μg/m3 (10) 7.8 μg/m3 (32) 32.0
 
Jan. 17, 2019, 11 a.m. 5.6 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 10.0 μg/m3 (9) 6.8 μg/m3 (28) 28.0
 
Jan. 17, 2019, 10 a.m. 4.4 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 11.0 μg/m3 (10) 7.1 μg/m3 (30) 30.0
 
Jan. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Jan. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 5.0 μg/m3 (5) 2.4 μg/m3 (10) 28.0
 
Jan. 17, 2019, 6 a.m. 3.4 ppb (3) -0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 29.0
 
Jan. 17, 2019, 5 a.m. 3.5 ppb (3) -0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 3.0 μg/m3 (3) 1.7 μg/m3 (7) 29.0
 
Jan. 17, 2019, 4 a.m. 3.8 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 1.8 μg/m3 (8) 29.0
 
Jan. 17, 2019, 3 a.m. 5.4 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 4.0 μg/m3 (4) 2.5 μg/m3 (10) 28.0
 
Jan. 17, 2019, 2 a.m. 5.6 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 28.0
 
Jan. 17, 2019, 1 a.m. 6.2 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 2.4 μg/m3 (10) 28.0
 
Jan. 17, 2019, midnight 6.3 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 27.0
 
Jan. 16, 2019, 11 p.m. 6.3 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 6.0 μg/m3 (5) 3.7 μg/m3 (15) 26.0
 
Jan. 16, 2019, 10 p.m. 5.4 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 27.0
 
Jan. 16, 2019, 9 p.m. 4.1 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 2.8 μg/m3 (12) 28.0
 
Jan. 16, 2019, 8 p.m. 3.8 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) N/A 4.0 μg/m3 (4) 2.3 μg/m3 (10) 28.0
 
Jan. 16, 2019, 7 p.m. 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 2.6 μg/m3 (11) 28.0
 
Jan. 16, 2019, 5 p.m. 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 2.6 μg/m3 (11) 27.0
 
Jan. 16, 2019, 4 p.m. 4.0 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 9.0 μg/m3 (8) 3.4 μg/m3 (14) 25.0
 
Jan. 16, 2019, 3 p.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 10.0 μg/m3 (9) 3.4 μg/m3 (14) 22.0
 
Jan. 16, 2019, 1 p.m. 11.7 ppb (11) 1.2 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 28.0 μg/m3 (25) 9.7 μg/m3 (40) 40.0
 
Jan. 16, 2019, 11 a.m. 5.5 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 21.0 μg/m3 (19) 8.4 μg/m3 (35) 35.0
 
Jan. 16, 2019, 10 a.m. 3.5 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 13.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
Jan. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 9.6 μg/m3 (40) 40.0
 
Jan. 16, 2019, 6 a.m. 6.3 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (12) N/A 12.0 μg/m3 (11) 8.7 μg/m3 (36) 36.0
 
Jan. 16, 2019, 5 a.m. 7.7 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) N/A 10.0 μg/m3 (9) 7.3 μg/m3 (30) 30.0
 
Jan. 16, 2019, 4 a.m. 8.1 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 10.0 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
Jan. 16, 2019, 3 a.m. 8.1 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 10.0 μg/m3 (9) 7.8 μg/m3 (32) 32.0
 
Jan. 16, 2019, 2 a.m. 7.4 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (15) N/A 10.0 μg/m3 (9) 7.3 μg/m3 (30) 30.0
 
Jan. 16, 2019, 1 a.m. 8.2 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 10.0 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
Jan. 16, 2019, midnight 8.6 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 9.0 μg/m3 (8) 6.2 μg/m3 (26) 26.0
 
Jan. 15, 2019, 11 p.m. 10.9 ppb (10) 2.4 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 9.0 μg/m3 (8) 6.3 μg/m3 (26) 26.0
 
Jan. 15, 2019, 10 p.m. 11.5 ppb (11) 2.7 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (17) N/A 9.0 μg/m3 (8) 5.4 μg/m3 (23) 23.0
 
Jan. 15, 2019, 9 p.m. 11.8 ppb (11) 2.8 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (19) N/A 10.0 μg/m3 (9) 5.8 μg/m3 (24) 24.0
 
Jan. 15, 2019, 8 p.m. 14.2 ppb (13) 4.4 ppb (4) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 24.0 ppb (18) N/A 11.0 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
Jan. 15, 2019, 7 p.m. 12.5 ppb (12) 3.7 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 11.0 μg/m3 (10) 5.8 μg/m3 (24) 24.0