ID: 2315

AQSQID: 550790056

Site Name: Milwaukee College Ave.-Nr

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

Updated: March 6, 2021, 5:32 p.m.

Location: Milwaukee (Maitland Park), WI

Reporting: True, Located: True

Current AQI: 24.0

Milwaukee (Maitland Park) WI, US: 42.93257, -87.93434

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 6, 2021, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) 11.6 μg/m3 (11) 5.7 μg/m3 (24) 24.0
 
March 6, 2021, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (4) 13.9 μg/m3 (13) 6.1 μg/m3 (26) 26.0
 
March 6, 2021, 2 p.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.49 ppb (6) 37.8 μg/m3 (35) 13.8 μg/m3 (55) 55.0
 
March 6, 2021, 1 p.m. N/A N/A N/A 34.0 ppb (33) N/A N/A N/A 0.59 ppb (7) 16.8 μg/m3 (16) 12.9 μg/m3 (53) 53.0
 
March 6, 2021, noon N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 0.56 ppb (7) 12.9 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
March 6, 2021, 11 a.m. N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 0.63 ppb (7) 14.3 μg/m3 (14) 10.3 μg/m3 (43) 43.0
 
March 6, 2021, 10 a.m. N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 0.52 ppb (6) 11.9 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
March 6, 2021, 9 a.m. N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 0.44 ppb (5) 16.0 μg/m3 (15) 11.3 μg/m3 (48) 48.0
 
March 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.42 ppb (5) 17.3 μg/m3 (17) 12.4 μg/m3 (52) 52.0
 
March 6, 2021, 7 a.m. N/A N/A N/A 33.0 ppb (32) N/A N/A N/A 0.42 ppb (5) 20.7 μg/m3 (20) 13.4 μg/m3 (54) 54.0
 
March 6, 2021, 6 a.m. N/A N/A N/A 37.0 ppb (35) N/A N/A N/A 0.54 ppb (6) 22.3 μg/m3 (21) 13.0 μg/m3 (53) 53.0
 
March 6, 2021, 5 a.m. N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 0.54 ppb (6) 26.9 μg/m3 (25) 13.0 μg/m3 (53) 53.0
 
March 6, 2021, 4 a.m. N/A N/A N/A 26.0 ppb (25) N/A N/A N/A 0.43 ppb (5) 21.8 μg/m3 (21) 11.2 μg/m3 (47) 47.0
 
March 6, 2021, 3 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.46 ppb (6) 20.6 μg/m3 (20) 11.6 μg/m3 (49) 49.0
 
March 6, 2021, 2 a.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.43 ppb (5) 27.1 μg/m3 (26) 12.8 μg/m3 (53) 53.0
 
March 6, 2021, 1 a.m. N/A N/A N/A 35.0 ppb (34) N/A N/A N/A 0.61 ppb (7) 32.4 μg/m3 (30) 11.2 μg/m3 (47) 47.0
 
March 6, 2021, midnight N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.25 ppb (3) 17.2 μg/m3 (16) 7.8 μg/m3 (33) 33.0
 
March 5, 2021, 11 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.24 ppb (3) 12.7 μg/m3 (12) 6.8 μg/m3 (29) 29.0
 
March 5, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (3) 12.8 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
March 5, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) 14.6 μg/m3 (14) 9.4 μg/m3 (40) 40.0
 
March 5, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) 14.6 μg/m3 (14) 8.5 μg/m3 (36) 36.0
 
March 5, 2021, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) 15.2 μg/m3 (15) 9.4 μg/m3 (40) 40.0
 
March 5, 2021, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (3) 14.9 μg/m3 (14) 6.8 μg/m3 (29) 29.0
 
March 5, 2021, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (3) 16.2 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
March 5, 2021, 4 p.m. N/A N/A N/A 29.0 ppb (28) N/A N/A N/A 0.35 ppb (4) 37.0 μg/m3 (35) 12.1 μg/m3 (51) 51.0
 
March 5, 2021, 3 p.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.33 ppb (4) 52.6 μg/m3 (49) 14.3 μg/m3 (56) 56.0
 
March 5, 2021, 2 p.m. N/A N/A N/A 27.0 ppb (26) N/A N/A N/A 0.4 ppb (5) 79.2 μg/m3 (63) 19.8 μg/m3 (68) 68.0
 
March 5, 2021, 1 p.m. N/A N/A N/A 27.0 ppb (26) N/A N/A N/A 0.44 ppb (5) 62.3 μg/m3 (55) 16.4 μg/m3 (61) 61.0
 
March 5, 2021, noon N/A N/A N/A 27.0 ppb (26) N/A N/A N/A 0.39 ppb (5) 17.8 μg/m3 (17) 10.8 μg/m3 (46) 46.0
 
March 5, 2021, 11 a.m. N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.37 ppb (5) 16.3 μg/m3 (16) 10.4 μg/m3 (44) 44.0
 
March 5, 2021, 10 a.m. N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.33 ppb (4) 15.3 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
March 5, 2021, 9 a.m. N/A N/A N/A 28.0 ppb (27) N/A N/A N/A 0.36 ppb (5) 16.3 μg/m3 (16) 10.1 μg/m3 (43) 43.0
 
March 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.43 ppb (5) 18.5 μg/m3 (18) 10.5 μg/m3 (44) 44.0
 
March 5, 2021, 7 a.m. N/A N/A N/A 37.0 ppb (35) N/A N/A N/A 0.47 ppb (6) 17.1 μg/m3 (16) 9.5 μg/m3 (40) 40.0
 
March 5, 2021, 6 a.m. N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 0.43 ppb (5) 15.6 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
March 5, 2021, 5 a.m. N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 0.6 ppb (7) 23.2 μg/m3 (22) 11.3 μg/m3 (48) 48.0
 
March 5, 2021, 4 a.m. N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 0.6 ppb (7) 20.1 μg/m3 (19) 10.3 μg/m3 (43) 43.0
 
March 5, 2021, 3 a.m. N/A N/A N/A 31.0 ppb (30) N/A N/A N/A 0.39 ppb (5) 14.5 μg/m3 (14) 7.2 μg/m3 (31) 31.0
 
March 5, 2021, 2 a.m. N/A N/A N/A 22.0 ppb (21) N/A N/A N/A 0.32 ppb (4) 14.1 μg/m3 (14) 6.7 μg/m3 (28) 28.0
 
March 5, 2021, 1 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.32 ppb (4) 14.9 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
March 5, 2021, midnight N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.3 ppb (4) 13.0 μg/m3 (13) 6.3 μg/m3 (27) 27.0
 
March 4, 2021, 11 p.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.37 ppb (5) 11.0 μg/m3 (11) 4.3 μg/m3 (18) 18.0
 
March 4, 2021, 10 p.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.38 ppb (5) 9.6 μg/m3 (9) 4.4 μg/m3 (19) 19.0
 
March 4, 2021, 9 p.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.37 ppb (5) 9.4 μg/m3 (9) 4.5 μg/m3 (19) 19.0
 
March 4, 2021, 8 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.37 ppb (5) 11.3 μg/m3 (11) 4.5 μg/m3 (19) 19.0
 
March 4, 2021, 7 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.29 ppb (4) 13.4 μg/m3 (13) 4.7 μg/m3 (20) 20.0
 
March 4, 2021, 6 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.27 ppb (4) 13.1 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
March 4, 2021, 5 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.28 ppb (4) 14.1 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
March 4, 2021, 4 p.m. N/A N/A N/A 22.0 ppb (21) N/A N/A N/A 0.27 ppb (4) 14.3 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
March 4, 2021, 3 p.m. N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 0.27 ppb (4) 17.6 μg/m3 (17) 6.6 μg/m3 (28) 28.0
 
March 4, 2021, 2 p.m. N/A N/A N/A 31.0 ppb (30) N/A N/A N/A 0.48 ppb (6) 21.3 μg/m3 (20) 7.7 μg/m3 (33) 33.0
 
March 4, 2021, 1 p.m. N/A N/A N/A 33.0 ppb (32) N/A N/A N/A 0.47 ppb (6) 21.9 μg/m3 (21) 7.4 μg/m3 (31) 32.0
 
March 4, 2021, noon N/A N/A N/A 32.0 ppb (31) N/A N/A N/A 0.35 ppb (4) 21.8 μg/m3 (21) 7.7 μg/m3 (33) 33.0
 
March 4, 2021, 11 a.m. N/A N/A N/A 21.0 ppb (20) N/A N/A N/A 0.27 ppb (4) 18.4 μg/m3 (18) 7.4 μg/m3 (31) 31.0
 
March 4, 2021, 10 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.28 ppb (4) 14.8 μg/m3 (14) 6.6 μg/m3 (28) 28.0
 
March 4, 2021, 9 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.19 ppb (3) 16.7 μg/m3 (16) 6.1 μg/m3 (26) 26.0
 
March 4, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (3) 16.6 μg/m3 (16) 6.8 μg/m3 (29) 29.0
 
March 4, 2021, 7 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.19 ppb (3) 12.2 μg/m3 (12) 6.6 μg/m3 (28) 28.0
 
March 4, 2021, 6 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.19 ppb (3) 9.8 μg/m3 (10) 6.8 μg/m3 (29) 29.0
 
March 4, 2021, 5 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.22 ppb (3) 10.2 μg/m3 (10) 7.4 μg/m3 (31) 31.0
 
March 4, 2021, 4 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.33 ppb (4) 18.3 μg/m3 (17) 13.8 μg/m3 (55) 55.0
 
March 4, 2021, 3 a.m. N/A N/A N/A 26.0 ppb (25) N/A N/A N/A 0.39 ppb (5) 20.8 μg/m3 (20) 15.6 μg/m3 (59) 59.0
 
March 4, 2021, 2 a.m. N/A N/A N/A 26.0 ppb (25) N/A N/A N/A 0.4 ppb (5) 23.0 μg/m3 (22) 16.3 μg/m3 (60) 60.0
 
March 4, 2021, 1 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.41 ppb (5) 22.1 μg/m3 (21) 14.7 μg/m3 (57) 57.0
 
March 4, 2021, midnight N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.3 ppb (4) 20.0 μg/m3 (19) 13.5 μg/m3 (54) 54.0
 
March 3, 2021, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (4) 20.2 μg/m3 (19) 14.3 μg/m3 (56) 56.0
 
March 3, 2021, 10 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.33 ppb (4) 23.5 μg/m3 (22) 15.8 μg/m3 (59) 59.0
 
March 3, 2021, 9 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.25 ppb (3) 21.1 μg/m3 (20) 13.4 μg/m3 (54) 54.0
 
March 3, 2021, 8 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.3 ppb (4) 21.2 μg/m3 (20) 12.6 μg/m3 (53) 53.0
 
March 3, 2021, 7 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.29 ppb (4) 16.6 μg/m3 (16) 7.8 μg/m3 (33) 33.0
 
March 3, 2021, 6 p.m. N/A N/A N/A 23.0 ppb (22) N/A N/A N/A 0.31 ppb (4) 22.2 μg/m3 (21) 11.3 μg/m3 (48) 48.0
 
March 3, 2021, 5 p.m. N/A N/A N/A 23.0 ppb (22) N/A N/A N/A 0.32 ppb (4) 25.9 μg/m3 (24) 13.1 μg/m3 (54) 54.0
 
March 3, 2021, 4 p.m. N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 0.33 ppb (4) 30.8 μg/m3 (29) 13.8 μg/m3 (55) 55.0
 
March 3, 2021, 3 p.m. N/A N/A N/A 26.0 ppb (25) N/A N/A N/A 0.37 ppb (5) 41.5 μg/m3 (39) 15.9 μg/m3 (59) 59.0
 
March 3, 2021, 2 p.m. N/A N/A N/A 26.0 ppb (25) N/A N/A N/A 0.36 ppb (5) 46.3 μg/m3 (43) 15.5 μg/m3 (59) 59.0
 
March 3, 2021, 1 p.m. N/A N/A N/A 28.0 ppb (27) N/A N/A N/A 0.44 ppb (5) 23.9 μg/m3 (23) 11.4 μg/m3 (48) 48.0
 
March 3, 2021, noon N/A N/A N/A 27.0 ppb (26) N/A N/A N/A 0.41 ppb (5) 15.5 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
March 3, 2021, 11 a.m. N/A N/A N/A 21.0 ppb (20) N/A N/A N/A 0.32 ppb (4) 14.6 μg/m3 (14) 8.3 μg/m3 (35) 35.0
 
March 3, 2021, 10 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.26 ppb (4) 13.9 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
March 3, 2021, 9 a.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.24 ppb (3) 12.5 μg/m3 (12) 8.2 μg/m3 (35) 35.0
 
March 3, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.2 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
March 3, 2021, 7 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.23 ppb (3) 11.6 μg/m3 (11) 7.8 μg/m3 (33) 33.0
 
March 3, 2021, 6 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.24 ppb (3) 13.4 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
March 3, 2021, 5 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.25 ppb (3) 13.3 μg/m3 (13) 9.8 μg/m3 (41) 41.0
 
March 3, 2021, 4 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.26 ppb (4) 14.3 μg/m3 (14) 10.5 μg/m3 (44) 44.0
 
March 3, 2021, 3 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.27 ppb (4) 14.8 μg/m3 (14) 11.5 μg/m3 (48) 48.0
 
March 3, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.25 ppb (3) 16.6 μg/m3 (16) 12.7 μg/m3 (53) 53.0
 
March 3, 2021, 1 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.28 ppb (4) 19.8 μg/m3 (19) 13.5 μg/m3 (54) 54.0
 
March 3, 2021, midnight N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.36 ppb (5) 20.6 μg/m3 (20) 14.4 μg/m3 (56) 56.0
 
March 2, 2021, 11 p.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.34 ppb (4) 21.8 μg/m3 (21) 14.8 μg/m3 (57) 57.0
 
March 2, 2021, 10 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.36 ppb (5) 21.2 μg/m3 (20) 15.2 μg/m3 (58) 58.0
 
March 2, 2021, 9 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.33 ppb (4) 21.8 μg/m3 (21) 14.9 μg/m3 (57) 57.0
 
March 2, 2021, 8 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.33 ppb (4) 21.2 μg/m3 (20) 13.4 μg/m3 (54) 54.0
 
March 2, 2021, 7 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.27 ppb (4) 20.3 μg/m3 (19) 12.9 μg/m3 (53) 53.0
 
March 2, 2021, 6 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.28 ppb (4) 19.8 μg/m3 (19) 12.1 μg/m3 (51) 51.0
 
March 2, 2021, 5 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.28 ppb (4) 25.3 μg/m3 (24) 11.4 μg/m3 (48) 48.0
 
March 2, 2021, 4 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.26 ppb (4) 25.0 μg/m3 (24) 9.7 μg/m3 (41) 41.0
 
March 2, 2021, 3 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.29 ppb (4) 22.7 μg/m3 (22) 8.5 μg/m3 (36) 36.0
 
March 2, 2021, 2 p.m. N/A N/A N/A 23.0 ppb (22) N/A N/A N/A 0.33 ppb (4) 21.6 μg/m3 (20) 9.9 μg/m3 (42) 42.0
 
March 2, 2021, 1 p.m. N/A N/A N/A 31.0 ppb (30) N/A N/A N/A 0.44 ppb (5) 24.6 μg/m3 (23) 10.5 μg/m3 (44) 44.0
 
March 2, 2021, noon N/A N/A N/A 33.0 ppb (32) N/A N/A N/A 0.48 ppb (6) 27.3 μg/m3 (26) 11.1 μg/m3 (47) 47.0
 
March 2, 2021, 11 a.m. N/A N/A N/A 32.0 ppb (31) N/A N/A N/A 0.42 ppb (5) 30.9 μg/m3 (29) 12.7 μg/m3 (53) 53.0
 
March 2, 2021, 10 a.m. N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 0.42 ppb (5) 24.9 μg/m3 (24) 11.6 μg/m3 (49) 49.0
 
March 2, 2021, 9 a.m. N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 0.36 ppb (5) 22.6 μg/m3 (21) 13.0 μg/m3 (53) 53.0
 
March 2, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.9 μg/m3 (19) 12.8 μg/m3 (53) 53.0
 
March 2, 2021, 7 a.m. N/A N/A N/A 33.0 ppb (32) N/A N/A N/A 0.34 ppb (4) 21.3 μg/m3 (20) 12.1 μg/m3 (51) 51.0
 
March 2, 2021, 6 a.m. N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 0.43 ppb (5) 23.6 μg/m3 (22) 11.7 μg/m3 (49) 49.0
 
March 2, 2021, 5 a.m. N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 0.39 ppb (5) 20.8 μg/m3 (20) 10.5 μg/m3 (44) 44.0
 
March 2, 2021, 4 a.m. N/A N/A N/A 35.0 ppb (34) N/A N/A N/A 0.38 ppb (5) 19.5 μg/m3 (19) 9.4 μg/m3 (40) 40.0
 
March 2, 2021, 3 a.m. N/A N/A N/A 34.0 ppb (33) N/A N/A N/A 0.41 ppb (5) 19.4 μg/m3 (18) 9.6 μg/m3 (40) 40.0
 
March 2, 2021, 2 a.m. N/A N/A N/A 37.0 ppb (35) N/A N/A N/A 0.41 ppb (5) 23.6 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
March 2, 2021, 1 a.m. N/A N/A N/A 32.0 ppb (31) N/A N/A N/A 0.38 ppb (5) 18.6 μg/m3 (18) 8.2 μg/m3 (35) 35.0
 
March 2, 2021, midnight N/A N/A N/A 29.0 ppb (28) N/A N/A N/A 0.35 ppb (4) 16.0 μg/m3 (15) 6.9 μg/m3 (29) 29.0
 
March 1, 2021, 11 p.m. N/A N/A N/A 22.0 ppb (21) N/A N/A N/A 0.34 ppb (4) 14.0 μg/m3 (13) 5.9 μg/m3 (25) 25.0
 
March 1, 2021, 10 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.4 ppb (5) 13.3 μg/m3 (13) 5.8 μg/m3 (25) 25.0
 
March 1, 2021, 9 p.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.45 ppb (6) 13.3 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
March 1, 2021, 8 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.29 ppb (4) 12.7 μg/m3 (12) 5.4 μg/m3 (23) 23.0
 
March 1, 2021, 7 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.24 ppb (3) 12.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
March 1, 2021, 6 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A N/A 0.25 ppb (3) 11.5 μg/m3 (11) 5.2 μg/m3 (22) 22.0
 
March 1, 2021, 5 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A N/A 12.8 μg/m3 (12) 5.2 μg/m3 (22) 22.0
 
March 1, 2021, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 0.24 ppb (3) 13.7 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
March 1, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.24 ppb (3) 15.1 μg/m3 (14) 5.3 μg/m3 (23) 23.0
 
March 1, 2021, 2 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.3 ppb (4) 21.5 μg/m3 (20) 6.1 μg/m3 (26) 26.0
 
March 1, 2021, 1 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.34 ppb (4) 19.0 μg/m3 (18) 6.3 μg/m3 (27) 27.0
 
March 1, 2021, noon N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.31 ppb (4) 18.2 μg/m3 (17) 6.5 μg/m3 (28) 28.0
 
March 1, 2021, 11 a.m. N/A N/A N/A 16.0 ppb (16) N/A N/A N/A 0.24 ppb (3) 15.3 μg/m3 (15) 6.7 μg/m3 (28) 28.0
 
March 1, 2021, 10 a.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.2 ppb (3) 12.1 μg/m3 (12) 6.1 μg/m3 (26) 26.0
 
March 1, 2021, 9 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.18 ppb (3) 10.0 μg/m3 (10) 5.6 μg/m3 (24) 24.0
 
March 1, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (8) 5.2 μg/m3 (22) 22.0
 
March 1, 2021, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (3) 9.8 μg/m3 (10) 5.4 μg/m3 (23) 23.0
 
March 1, 2021, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (3) 9.3 μg/m3 (9) 5.6 μg/m3 (24) 24.0
 
March 1, 2021, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (3) 10.9 μg/m3 (11) 6.3 μg/m3 (27) 27.0
 
March 1, 2021, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (3) 8.5 μg/m3 (8) 5.4 μg/m3 (23) 23.0
 
March 1, 2021, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (3) 7.1 μg/m3 (7) 4.3 μg/m3 (18) 18.0
 
March 1, 2021, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) 8.8 μg/m3 (9) 4.4 μg/m3 (19) 19.0
 
March 1, 2021, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (4) 10.2 μg/m3 (10) 6.1 μg/m3 (26) 26.0
 
March 1, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) 11.6 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
Feb. 28, 2021, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (4) 16.4 μg/m3 (16) 12.2 μg/m3 (52) 52.0
 
Feb. 28, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) 19.8 μg/m3 (19) 15.5 μg/m3 (59) 59.0
 
Feb. 28, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.27 ppb (4) 21.3 μg/m3 (20) 15.4 μg/m3 (58) 58.0
 
Feb. 28, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.28 ppb (4) 19.3 μg/m3 (18) 12.2 μg/m3 (52) 52.0
 
Feb. 28, 2021, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.31 ppb (4) 15.9 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
Feb. 28, 2021, 6 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.33 ppb (4) 15.5 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
Feb. 28, 2021, 5 p.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.39 ppb (5) 20.3 μg/m3 (19) 15.1 μg/m3 (58) 58.0
 
Feb. 28, 2021, 4 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 0.37 ppb (5) 22.4 μg/m3 (21) 17.3 μg/m3 (62) 62.0
 
Feb. 28, 2021, 3 p.m. N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.36 ppb (5) 25.9 μg/m3 (24) 20.9 μg/m3 (70) 70.0
 
Feb. 28, 2021, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) 24.0 μg/m3 (23) 20.7 μg/m3 (70) 70.0
 
Feb. 28, 2021, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) 27.5 μg/m3 (26) 22.3 μg/m3 (73) 73.0
 
Feb. 28, 2021, noon N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) 26.3 μg/m3 (25) 22.3 μg/m3 (73) 73.0
 
Feb. 28, 2021, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) 28.8 μg/m3 (27) 24.2 μg/m3 (77) 77.0
 
Feb. 28, 2021, 10 a.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.24 ppb (3) 29.2 μg/m3 (28) 24.1 μg/m3 (77) 77.0
 
Feb. 28, 2021, 9 a.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.25 ppb (3) 28.3 μg/m3 (27) 23.9 μg/m3 (76) 76.0
 
Feb. 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.9 μg/m3 (25) 22.6 μg/m3 (74) 74.0
 
Feb. 28, 2021, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (4) 26.8 μg/m3 (25) 22.5 μg/m3 (73) 73.0
 
Feb. 28, 2021, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (4) 26.6 μg/m3 (25) 22.7 μg/m3 (74) 74.0
 
Feb. 28, 2021, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.28 ppb (4) 28.3 μg/m3 (27) 23.7 μg/m3 (76) 76.0
 
Feb. 28, 2021, 4 a.m. N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) 31.7 μg/m3 (30) 25.7 μg/m3 (80) 80.0
 
Feb. 28, 2021, 3 a.m. N/A N/A N/A 14.0 ppb (14) N/A N/A N/A 0.34 ppb (4) 33.6 μg/m3 (32) 26.2 μg/m3 (81) 81.0
 
Feb. 28, 2021, 2 a.m. N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 0.33 ppb (4) 32.7 μg/m3 (31) 25.1 μg/m3 (79) 79.0
 
Feb. 28, 2021, 1 a.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.32 ppb (4) 33.8 μg/m3 (32) 25.2 μg/m3 (79) 79.0
 
Feb. 28, 2021, midnight N/A N/A N/A 15.0 ppb (15) N/A N/A N/A 0.34 ppb (4) 36.3 μg/m3 (34) 23.1 μg/m3 (75) 75.0
 
Feb. 27, 2021, 11 p.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.33 ppb (4) 38.0 μg/m3 (36) 20.5 μg/m3 (69) 69.0
 
Feb. 27, 2021, 10 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.26 ppb (4) 27.3 μg/m3 (26) 16.3 μg/m3 (60) 60.0
 
Feb. 27, 2021, 9 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.32 ppb (4) 27.1 μg/m3 (26) 16.0 μg/m3 (60) 60.0
 
Feb. 27, 2021, 8 p.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.39 ppb (5) 26.9 μg/m3 (25) 15.4 μg/m3 (58) 58.0
 
Feb. 27, 2021, 7 p.m. N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 0.38 ppb (5) 27.1 μg/m3 (26) 15.3 μg/m3 (58) 58.0
 
Feb. 27, 2021, 6 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.34 ppb (4) 29.7 μg/m3 (28) 18.7 μg/m3 (65) 65.0
 
Feb. 27, 2021, 5 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.35 ppb (4) 31.2 μg/m3 (29) 19.9 μg/m3 (68) 68.0