AQSQID: 260810020

Site Name: Grand Rapids

Location: Grand Rapids (Belknap Lookout), MI

Reporting: True, Located: True

Current AQI: 22.0

Grand Rapids (Belknap Lookout) MI, US: 42.984699, -85.671097

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 18, 2020, 4 a.m. N/A N/A 5.3 ppb (5) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.21 ppb (2) N/A 2.6 μg/m3 (11) 22.0
 
Jan. 18, 2020, 3 a.m. N/A N/A 5.6 ppb (5) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.21 ppb (2) N/A 1.8 μg/m3 (8) 22.0
 
Jan. 18, 2020, 2 a.m. N/A N/A 6.2 ppb (6) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.22 ppb (2) N/A 4.2 μg/m3 (18) 21.0
 
Jan. 18, 2020, 1 a.m. N/A N/A 9.2 ppb (9) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.24 ppb (3) N/A 4.4 μg/m3 (18) 18.0
 
Jan. 18, 2020, midnight N/A N/A 9.8 ppb (9) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.24 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 17, 2020, 11 p.m. N/A N/A 9.9 ppb (9) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.25 ppb (3) N/A 5.3 μg/m3 (22) 22.0
 
Jan. 17, 2020, 10 p.m. N/A N/A 10.5 ppb (10) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.28 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 17, 2020, 9 p.m. N/A N/A 8.5 ppb (8) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.27 ppb (3) N/A 4.5 μg/m3 (19) 20.0
 
Jan. 17, 2020, 8 p.m. N/A N/A 7.0 ppb (6) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.24 ppb (3) N/A 4.5 μg/m3 (19) 22.0
 
Jan. 17, 2020, 7 p.m. N/A N/A 7.1 ppb (7) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.21 ppb (2) N/A 2.6 μg/m3 (11) 22.0
 
Jan. 17, 2020, 6 p.m. N/A N/A 8.7 ppb (8) N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.22 ppb (2) N/A 1.9 μg/m3 (8) 21.0
 
Jan. 17, 2020, 5 p.m. N/A N/A 10.8 ppb (10) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.24 ppb (3) N/A 3.3 μg/m3 (14) 20.0
 
Jan. 17, 2020, 4 p.m. N/A N/A 8.7 ppb (8) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.23 ppb (3) N/A 3.8 μg/m3 (16) 21.0
 
Jan. 17, 2020, 3 p.m. N/A N/A 9.2 ppb (9) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.23 ppb (3) N/A 2.4 μg/m3 (10) 19.0
 
Jan. 17, 2020, 2 p.m. N/A N/A 15.5 ppb (14) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.28 ppb (3) N/A 0.7 μg/m3 (3) 15.0
 
Jan. 17, 2020, 1 p.m. N/A N/A 53.5 ppb (50) N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.65 ppb (7) N/A 8.7 μg/m3 (36) 50.0
 
Jan. 17, 2020, noon N/A N/A 63.7 ppb (60) N/A N/A 1.0 ppb (1) 1.0 ppb (1) 0.6 ppb (7) N/A 8.3 μg/m3 (35) 60.0
 
Jan. 17, 2020, 11 a.m. N/A N/A 55.9 ppb (52) N/A N/A 1.0 ppb (1) 2.0 ppb (2) 0.8 ppb (9) N/A 9.8 μg/m3 (41) 52.0
 
Jan. 17, 2020, 10 a.m. N/A N/A 42.3 ppb (39) N/A N/A 1.0 ppb (1) 2.0 ppb (2) 0.39 ppb (4) N/A 6.1 μg/m3 (25) 39.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 2.0 ppb (2) 0.38 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2020, 8 a.m. N/A N/A 55.7 ppb (52) N/A N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 7.9 μg/m3 (33) 52.0
 
Jan. 17, 2020, 7 a.m. N/A N/A 31.5 ppb (29) N/A N/A 0.0 ppb (0) N/A 0.34 ppb (4) N/A 10.2 μg/m3 (42) 42.0
 
Jan. 17, 2020, 6 a.m. N/A N/A 22.1 ppb (20) N/A N/A N/A 8.0 ppb (6) 0.33 ppb (4) N/A 10.4 μg/m3 (43) 43.0
 
Jan. 17, 2020, 5 a.m. N/A N/A 25.7 ppb (24) N/A N/A 0.0 ppb (0) 7.0 ppb (5) 0.32 ppb (4) N/A 8.2 μg/m3 (34) 34.0
 
Jan. 17, 2020, 4 a.m. N/A N/A 21.4 ppb (20) N/A N/A 0.0 ppb (0) 10.0 ppb (8) 0.32 ppb (4) N/A 8.7 μg/m3 (36) 36.0
 
Jan. 17, 2020, 3 a.m. N/A N/A 19.4 ppb (18) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.28 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
Jan. 17, 2020, 2 a.m. N/A N/A 13.5 ppb (12) N/A N/A 0.0 ppb (0) 16.0 ppb (12) 0.27 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 17, 2020, 1 a.m. N/A N/A 12.3 ppb (11) N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, midnight N/A N/A 9.4 ppb (9) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.23 ppb (3) N/A 8.4 μg/m3 (35) 35.0
 
Jan. 16, 2020, 11 p.m. N/A N/A 9.8 ppb (9) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.23 ppb (3) N/A 10.2 μg/m3 (42) 42.0
 
Jan. 16, 2020, 10 p.m. N/A N/A 7.6 ppb (7) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.23 ppb (3) N/A 8.1 μg/m3 (34) 34.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.22 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 16, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 16, 2020, 7 p.m. N/A N/A 7.9 ppb (7) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.2 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Jan. 16, 2020, 6 p.m. N/A N/A 7.5 ppb (7) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) N/A 3.1 μg/m3 (13) 20.0
 
Jan. 16, 2020, 5 p.m. N/A N/A 8.9 ppb (8) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) N/A 2.8 μg/m3 (12) 20.0
 
Jan. 16, 2020, 4 p.m. N/A N/A 8.7 ppb (8) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.19 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 16, 2020, 3 p.m. N/A N/A 9.3 ppb (9) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.19 ppb (2) N/A 13.6 μg/m3 (53) 53.0
 
Jan. 16, 2020, 2 p.m. N/A N/A 8.8 ppb (8) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
Jan. 16, 2020, 1 p.m. N/A N/A 8.3 ppb (8) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 16, 2020, noon N/A N/A 8.7 ppb (8) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.21 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 16, 2020, 11 a.m. N/A N/A 7.0 ppb (6) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.19 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
Jan. 16, 2020, 10 a.m. N/A N/A 5.9 ppb (5) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.19 ppb (2) N/A 7.7 μg/m3 (32) 32.0
 
Jan. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.17 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Jan. 16, 2020, 8 a.m. N/A N/A 5.2 ppb (5) N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 4.7 μg/m3 (20) 22.0
 
Jan. 16, 2020, 7 a.m. N/A N/A 4.3 ppb (4) N/A N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2020, 6 a.m. N/A N/A 3.6 ppb (3) N/A N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A -0.5 μg/m3 (0) 22.0
 
Jan. 16, 2020, 5 a.m. N/A N/A 6.5 ppb (6) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.18 ppb (2) N/A 2.9 μg/m3 (12) 18.0
 
Jan. 16, 2020, 4 a.m. N/A N/A 9.3 ppb (9) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.23 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Jan. 16, 2020, 3 a.m. N/A N/A 12.9 ppb (12) N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.27 ppb (3) N/A 12.4 μg/m3 (51) 51.0
 
Jan. 16, 2020, 2 a.m. N/A N/A 17.1 ppb (16) N/A N/A 0.0 ppb (0) 10.0 ppb (8) 0.31 ppb (3) N/A 13.1 μg/m3 (52) 52.0
 
Jan. 16, 2020, 1 a.m. N/A N/A 18.4 ppb (17) N/A N/A 0.0 ppb (0) 8.0 ppb (6) 0.33 ppb (4) N/A 14.4 μg/m3 (55) 55.0
 
Jan. 16, 2020, midnight N/A N/A 22.8 ppb (21) N/A N/A 0.0 ppb (0) 6.0 ppb (5) 0.35 ppb (4) N/A 12.4 μg/m3 (51) 51.0
 
Jan. 15, 2020, 11 p.m. N/A N/A 20.8 ppb (19) N/A N/A 0.0 ppb (0) 8.0 ppb (6) 0.33 ppb (4) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 15, 2020, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (7) 0.38 ppb (4) N/A 10.1 μg/m3 (42) 42.0
 
Jan. 15, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.35 ppb (4) N/A 9.1 μg/m3 (38) 38.0
 
Jan. 15, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (9) 0.34 ppb (4) N/A 11.1 μg/m3 (46) 46.0
 
Jan. 15, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 10.4 μg/m3 (43) 43.0
 
Jan. 15, 2020, 6 p.m. N/A N/A 13.8 ppb (13) N/A N/A N/A 19.0 ppb (15) 0.66 ppb (7) N/A 8.6 μg/m3 (36) 36.0
 
Jan. 15, 2020, 5 p.m. N/A N/A 14.3 ppb (13) N/A N/A 0.0 ppb (0) N/A 0.66 ppb (7) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 15, 2020, 4 p.m. N/A N/A 14.8 ppb (14) N/A N/A 0.0 ppb (0) N/A 0.68 ppb (8) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 15, 2020, 3 p.m. N/A N/A 16.1 ppb (15) N/A N/A 0.0 ppb (0) N/A 0.69 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2020, 2 p.m. N/A N/A 26.6 ppb (25) N/A N/A 0.0 ppb (0) N/A 0.78 ppb (9) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 15, 2020, 1 p.m. N/A N/A 22.3 ppb (21) N/A N/A 0.0 ppb (0) N/A 0.72 ppb (8) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 15, 2020, noon N/A N/A 37.4 ppb (35) N/A N/A 0.0 ppb (0) N/A 0.82 ppb (9) N/A 5.0 μg/m3 (21) 35.0
 
Jan. 15, 2020, 11 a.m. N/A N/A 58.5 ppb (55) N/A N/A 1.0 ppb (1) N/A 0.91 ppb (10) N/A 7.7 μg/m3 (32) 55.0
 
Jan. 15, 2020, 10 a.m. N/A N/A 47.8 ppb (44) N/A N/A 1.0 ppb (1) N/A 0.84 ppb (9) N/A 10.4 μg/m3 (43) 44.0
 
Jan. 15, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.7 ppb (8) N/A 7.3 μg/m3 (30) 30.0
 
Jan. 15, 2020, 8 a.m. N/A N/A 11.4 ppb (11) N/A N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2020, 7 a.m. N/A N/A 7.5 ppb (7) N/A N/A 0.0 ppb (0) N/A 0.59 ppb (7) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 15, 2020, 6 a.m. N/A N/A 8.5 ppb (8) N/A N/A N/A N/A 0.6 ppb (7) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 15, 2020, 5 a.m. N/A N/A 8.7 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.61 ppb (7) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 15, 2020, 4 a.m. N/A N/A 10.3 ppb (10) N/A N/A 0.0 ppb (0) N/A 0.64 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 3 a.m. N/A N/A 8.1 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.6 ppb (7) N/A 5.9 μg/m3 (25) 25.0
 
Jan. 15, 2020, 2 a.m. N/A N/A 7.5 ppb (7) N/A N/A 0.0 ppb (0) N/A 0.6 ppb (7) N/A 5.7 μg/m3 (24) 24.0
 
Jan. 15, 2020, 1 a.m. N/A N/A 7.7 ppb (7) N/A N/A 0.0 ppb (0) N/A 0.6 ppb (7) N/A 6.1 μg/m3 (25) 25.0
 
Jan. 15, 2020, midnight N/A N/A 8.1 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.61 ppb (7) N/A 8.7 μg/m3 (36) 36.0
 
Jan. 14, 2020, 11 p.m. N/A N/A 8.7 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.61 ppb (7) N/A 8.6 μg/m3 (36) 36.0
 
Jan. 14, 2020, 10 p.m. N/A N/A 10.5 ppb (10) N/A N/A 0.0 ppb (0) N/A 0.63 ppb (7) N/A 11.9 μg/m3 (50) 50.0
 
Jan. 14, 2020, 9 p.m. N/A N/A 11.0 ppb (10) N/A N/A 0.0 ppb (0) N/A 0.63 ppb (7) N/A 8.7 μg/m3 (36) 36.0
 
Jan. 14, 2020, 8 p.m. N/A N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) N/A 0.63 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2020, 7 p.m. N/A N/A 15.4 ppb (14) N/A N/A 0.0 ppb (0) N/A 0.65 ppb (7) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 14, 2020, 6 p.m. N/A N/A 20.3 ppb (19) N/A N/A 0.0 ppb (0) N/A 0.7 ppb (8) N/A 10.4 μg/m3 (43) 43.0
 
Jan. 14, 2020, 5 p.m. N/A N/A 18.9 ppb (18) N/A N/A 0.0 ppb (0) N/A 0.68 ppb (8) N/A 10.1 μg/m3 (42) 42.0
 
Jan. 14, 2020, 4 p.m. N/A N/A 23.5 ppb (22) N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.67 ppb (7) N/A 10.9 μg/m3 (45) 45.0
 
Jan. 14, 2020, 3 p.m. N/A N/A 25.4 ppb (24) N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.69 ppb (8) N/A 10.3 μg/m3 (43) 43.0
 
Jan. 14, 2020, 2 p.m. N/A N/A 24.2 ppb (22) N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.72 ppb (8) N/A 9.2 μg/m3 (38) 38.0
 
Jan. 14, 2020, 1 p.m. N/A N/A 20.8 ppb (19) N/A N/A 0.0 ppb (0) N/A 0.74 ppb (8) N/A 10.4 μg/m3 (43) 43.0
 
Jan. 14, 2020, noon N/A N/A 16.6 ppb (15) N/A N/A 0.0 ppb (0) N/A 0.67 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2020, 11 a.m. N/A N/A 13.8 ppb (13) N/A N/A 0.0 ppb (0) N/A 0.62 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 14, 2020, 10 a.m. N/A N/A 8.9 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.59 ppb (7) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 14, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.59 ppb (7) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 14, 2020, 8 a.m. N/A N/A 6.8 ppb (6) N/A N/A 0.0 ppb (0) N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 14, 2020, 7 a.m. N/A N/A 6.7 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.58 ppb (6) N/A 8.4 μg/m3 (35) 35.0
 
Jan. 14, 2020, 6 a.m. N/A N/A 8.1 ppb (8) N/A N/A N/A N/A 0.6 ppb (7) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 14, 2020, 5 a.m. N/A N/A 10.8 ppb (10) N/A N/A 0.0 ppb (0) N/A 0.61 ppb (7) N/A 10.3 μg/m3 (43) 43.0
 
Jan. 14, 2020, 4 a.m. N/A N/A 11.4 ppb (11) N/A N/A 0.0 ppb (0) N/A 0.62 ppb (7) N/A 9.1 μg/m3 (38) 38.0
 
Jan. 14, 2020, 3 a.m. N/A N/A 10.4 ppb (10) N/A N/A 0.0 ppb (0) N/A 0.6 ppb (7) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 14, 2020, 2 a.m. N/A N/A 8.2 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.59 ppb (7) N/A 6.4 μg/m3 (27) 27.0
 
Jan. 14, 2020, 1 a.m. N/A N/A 8.1 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.59 ppb (7) N/A 6.4 μg/m3 (27) 27.0
 
Jan. 14, 2020, midnight N/A N/A 8.8 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.6 ppb (7) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 13, 2020, 11 p.m. N/A N/A 10.9 ppb (10) N/A N/A 0.0 ppb (0) N/A 0.62 ppb (7) N/A 7.1 μg/m3 (30) 30.0
 
Jan. 13, 2020, 10 p.m. N/A N/A 11.5 ppb (11) N/A N/A 0.0 ppb (0) N/A 0.63 ppb (7) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 13, 2020, 9 p.m. N/A N/A 15.5 ppb (14) N/A N/A 0.0 ppb (0) N/A 0.66 ppb (7) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 13, 2020, 8 p.m. N/A N/A 12.3 ppb (11) N/A N/A 0.0 ppb (0) N/A 0.64 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 13, 2020, 7 p.m. N/A N/A 11.0 ppb (10) N/A N/A 0.0 ppb (0) N/A 0.61 ppb (7) N/A 5.5 μg/m3 (23) 23.0
 
Jan. 13, 2020, 6 p.m. N/A N/A 12.3 ppb (11) N/A N/A 0.0 ppb (0) N/A 0.62 ppb (7) N/A 4.3 μg/m3 (18) 18.0
 
Jan. 13, 2020, 5 p.m. N/A N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) N/A 0.64 ppb (7) N/A 2.3 μg/m3 (10) 16.0
 
Jan. 13, 2020, 4 p.m. N/A N/A 19.4 ppb (18) N/A N/A 0.0 ppb (0) N/A 0.66 ppb (7) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 13, 2020, 3 p.m. N/A N/A 16.7 ppb (15) N/A N/A 0.0 ppb (0) N/A 0.62 ppb (7) N/A 5.8 μg/m3 (24) 24.0
 
Jan. 13, 2020, 2 p.m. N/A N/A 30.6 ppb (28) N/A N/A 0.0 ppb (0) N/A 0.72 ppb (8) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 13, 2020, 1 p.m. N/A N/A 34.1 ppb (32) N/A N/A 0.0 ppb (0) N/A 0.79 ppb (9) N/A 10.2 μg/m3 (42) 42.0
 
Jan. 13, 2020, noon N/A N/A 23.4 ppb (22) N/A N/A 0.0 ppb (0) N/A 0.77 ppb (9) N/A 9.1 μg/m3 (38) 38.0
 
Jan. 13, 2020, 11 a.m. N/A N/A 16.2 ppb (15) N/A N/A 0.0 ppb (0) N/A 0.64 ppb (7) N/A 9.8 μg/m3 (41) 41.0
 
Jan. 13, 2020, 10 a.m. N/A N/A 14.6 ppb (14) N/A N/A 0.0 ppb (0) N/A 0.59 ppb (7) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 13, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.56 ppb (6) N/A 5.5 μg/m3 (23) 23.0
 
Jan. 13, 2020, 8 a.m. N/A N/A 7.2 ppb (7) N/A N/A 0.0 ppb (0) N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 13, 2020, 7 a.m. N/A N/A 6.4 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.56 ppb (6) N/A 8.3 μg/m3 (35) 35.0
 
Jan. 13, 2020, 6 a.m. N/A N/A 6.7 ppb (6) N/A N/A N/A N/A 0.57 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 13, 2020, 5 a.m. N/A N/A 7.2 ppb (7) N/A N/A 0.0 ppb (0) N/A 0.57 ppb (6) N/A 5.6 μg/m3 (23) 23.0
 
Jan. 13, 2020, 4 a.m. N/A N/A 6.2 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.56 ppb (6) N/A 8.2 μg/m3 (34) 34.0
 
Jan. 13, 2020, 3 a.m. N/A N/A 5.5 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.55 ppb (6) N/A 5.4 μg/m3 (23) 23.0
 
Jan. 13, 2020, 2 a.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.55 ppb (6) N/A 5.9 μg/m3 (25) 25.0
 
Jan. 13, 2020, 1 a.m. N/A N/A 5.8 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.56 ppb (6) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 13, 2020, midnight N/A N/A 6.5 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.58 ppb (6) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 12, 2020, 11 p.m. N/A N/A 8.2 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.6 ppb (7) N/A 3.9 μg/m3 (16) 16.0
 
Jan. 12, 2020, 10 p.m. N/A N/A 8.1 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.6 ppb (7) N/A 5.4 μg/m3 (23) 23.0
 
Jan. 12, 2020, 9 p.m. N/A N/A 6.7 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.57 ppb (6) N/A 4.4 μg/m3 (18) 18.0
 
Jan. 12, 2020, 8 p.m. N/A N/A 6.6 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.56 ppb (6) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 12, 2020, 7 p.m. N/A N/A 6.4 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.56 ppb (6) N/A 3.8 μg/m3 (16) 16.0
 
Jan. 12, 2020, 6 p.m. N/A N/A 9.4 ppb (9) N/A N/A 0.0 ppb (0) N/A 0.57 ppb (6) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 12, 2020, 5 p.m. N/A N/A 6.7 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.56 ppb (6) N/A 4.6 μg/m3 (19) 19.0
 
Jan. 12, 2020, 4 p.m. N/A N/A 8.3 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.57 ppb (6) N/A 6.1 μg/m3 (25) 25.0
 
Jan. 12, 2020, 3 p.m. N/A N/A 6.1 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.54 ppb (6) N/A 5.3 μg/m3 (22) 22.0
 
Jan. 12, 2020, 2 p.m. N/A N/A 5.6 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.54 ppb (6) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 12, 2020, 1 p.m. N/A N/A 8.3 ppb (8) N/A N/A 0.0 ppb (0) N/A 0.55 ppb (6) N/A 6.6 μg/m3 (28) 28.0
 
Jan. 12, 2020, noon N/A N/A 3.6 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.51 ppb (6) N/A 6.1 μg/m3 (25) 25.0
 
Jan. 12, 2020, 11 a.m. N/A N/A 5.8 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.58 ppb (6) N/A 8.8 μg/m3 (37) 37.0
 
Jan. 12, 2020, 10 a.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.52 ppb (6) N/A 3.8 μg/m3 (16) 16.0
 
Jan. 12, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.51 ppb (6) N/A 6.1 μg/m3 (25) 25.0
 
Jan. 12, 2020, 8 a.m. N/A N/A 5.6 ppb (5) N/A N/A 0.0 ppb (0) N/A N/A N/A 7.5 μg/m3 (31) 31.0
 
Jan. 12, 2020, 7 a.m. N/A N/A 5.9 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.51 ppb (6) N/A 6.6 μg/m3 (28) 28.0
 
Jan. 12, 2020, 6 a.m. N/A N/A 4.8 ppb (4) N/A N/A N/A N/A 0.51 ppb (6) N/A 5.3 μg/m3 (22) 22.0
 
Jan. 12, 2020, 5 a.m. N/A N/A 3.8 ppb (4) N/A N/A 0.0 ppb (0) N/A 0.52 ppb (6) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 12, 2020, 4 a.m. N/A N/A 4.1 ppb (4) N/A N/A 0.0 ppb (0) N/A 0.51 ppb (6) N/A 1.4 μg/m3 (6) 6.0
 
Jan. 12, 2020, 3 a.m. N/A N/A 4.4 ppb (4) N/A N/A 0.0 ppb (0) N/A 0.52 ppb (6) N/A 4.8 μg/m3 (20) 20.0
 
Jan. 12, 2020, 2 a.m. N/A N/A 5.5 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.55 ppb (6) N/A 3.3 μg/m3 (14) 14.0
 
Jan. 12, 2020, 1 a.m. N/A N/A 5.9 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.54 ppb (6) N/A 2.6 μg/m3 (11) 11.0
 
Jan. 12, 2020, midnight N/A N/A 6.2 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.53 ppb (6) N/A 5.6 μg/m3 (23) 23.0
 
Jan. 11, 2020, 11 p.m. N/A N/A 5.5 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.55 ppb (6) N/A 3.7 μg/m3 (15) 15.0
 
Jan. 11, 2020, 10 p.m. N/A N/A 6.9 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.55 ppb (6) N/A 1.3 μg/m3 (5) 6.0
 
Jan. 11, 2020, 9 p.m. N/A N/A 5.4 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.54 ppb (6) N/A 1.1 μg/m3 (5) 6.0
 
Jan. 11, 2020, 8 p.m. N/A N/A 6.0 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.56 ppb (6) N/A 1.8 μg/m3 (8) 8.0
 
Jan. 11, 2020, 7 p.m. N/A N/A 5.1 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.55 ppb (6) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 11, 2020, 6 p.m. N/A N/A 6.0 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.54 ppb (6) N/A 0.9 μg/m3 (4) 6.0
 
Jan. 11, 2020, 5 p.m. N/A N/A 5.8 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.56 ppb (6) N/A 2.6 μg/m3 (11) 11.0
 
Jan. 11, 2020, 4 p.m. N/A N/A 5.9 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.57 ppb (6) N/A 2.9 μg/m3 (12) 12.0
 
Jan. 11, 2020, 3 p.m. N/A N/A 5.8 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.57 ppb (6) N/A 1.9 μg/m3 (8) 8.0
 
Jan. 11, 2020, 2 p.m. N/A N/A 5.4 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.57 ppb (6) N/A 0.9 μg/m3 (4) 6.0
 
Jan. 11, 2020, 1 p.m. N/A N/A 5.1 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.58 ppb (6) N/A 3.6 μg/m3 (15) 15.0
 
Jan. 11, 2020, noon N/A N/A 5.8 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.58 ppb (6) N/A 1.9 μg/m3 (8) 8.0
 
Jan. 11, 2020, 11 a.m. N/A N/A 5.1 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.59 ppb (7) N/A 1.2 μg/m3 (5) 7.0
 
Jan. 11, 2020, 10 a.m. N/A N/A 4.7 ppb (4) N/A N/A 0.0 ppb (0) N/A 0.59 ppb (7) N/A -2.1 μg/m3 (0) 7.0
 
Jan. 11, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.57 ppb (6) N/A -4.8 μg/m3 (0) 6.0
 
Jan. 11, 2020, 8 a.m. N/A N/A 7.4 ppb (7) N/A N/A 0.0 ppb (0) N/A N/A N/A -1.1 μg/m3 (0) 7.0
 
Jan. 11, 2020, 7 a.m. N/A N/A 9.9 ppb (9) N/A N/A 0.0 ppb (0) N/A 0.65 ppb (7) N/A 2.3 μg/m3 (10) 10.0
 
Jan. 11, 2020, 6 a.m. N/A N/A 7.7 ppb (7) N/A N/A N/A N/A 0.61 ppb (7) N/A 1.4 μg/m3 (6) 7.0
 
Jan. 11, 2020, 5 a.m. N/A N/A 9.5 ppb (9) N/A N/A 0.0 ppb (0) N/A 0.62 ppb (7) N/A -0.6 μg/m3 (0) 9.0