AQSQID: 260810020

Site Name: Grand Rapids

Location: Grand Rapids (Belknap Lookout), MI

Reporting: True, Located: True

Current AQI: 36.0

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
April 7, 2020, 10 p.m. N/A N/A 4.0 ppb (4) N/A N/A 1.0 ppb (1) 48.0 ppb (37) 0.54 ppb (6) N/A 13.8 μg/m3 (54) 54.0
 
April 7, 2020, 9 p.m. N/A N/A 3.5 ppb (3) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.52 ppb (6) N/A 6.7 μg/m3 (28) 36.0
 
April 7, 2020, 8 p.m. N/A N/A 3.7 ppb (3) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.52 ppb (6) N/A 9.3 μg/m3 (39) 39.0
 
April 7, 2020, 7 p.m. N/A N/A 4.6 ppb (4) N/A N/A 1.0 ppb (1) 43.0 ppb (33) 0.52 ppb (6) N/A 10.1 μg/m3 (42) 42.0
 
April 7, 2020, 6 p.m. N/A N/A 6.7 ppb (6) N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.53 ppb (6) N/A 11.7 μg/m3 (49) 49.0
 
April 7, 2020, 5 p.m. N/A N/A 7.3 ppb (7) N/A N/A 1.0 ppb (1) 30.0 ppb (23) 0.53 ppb (6) N/A 10.8 μg/m3 (45) 45.0
 
April 7, 2020, 4 p.m. N/A N/A 8.9 ppb (8) N/A N/A 1.0 ppb (1) 25.0 ppb (19) 0.55 ppb (6) N/A 10.5 μg/m3 (44) 44.0
 
April 7, 2020, 3 p.m. N/A N/A 17.7 ppb (16) N/A N/A 1.0 ppb (1) 18.0 ppb (14) 0.59 ppb (7) N/A 13.2 μg/m3 (53) 53.0
 
April 7, 2020, 2 p.m. N/A N/A 17.2 ppb (16) N/A N/A 1.0 ppb (1) 17.0 ppb (13) 0.57 ppb (6) N/A 9.4 μg/m3 (39) 39.0
 
April 7, 2020, 1 p.m. N/A N/A 10.9 ppb (10) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.54 ppb (6) N/A 9.5 μg/m3 (40) 40.0
 
April 7, 2020, noon N/A N/A 9.2 ppb (9) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.54 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
April 7, 2020, 11 a.m. N/A N/A 8.0 ppb (7) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.53 ppb (6) N/A 7.2 μg/m3 (30) 30.0
 
April 7, 2020, 10 a.m. N/A N/A 4.1 ppb (4) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.49 ppb (5) N/A 5.5 μg/m3 (23) 26.0
 
April 7, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.48 ppb (5) N/A 5.1 μg/m3 (21) 27.0
 
April 7, 2020, 8 a.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 6.5 μg/m3 (27) 27.0
 
April 7, 2020, 7 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.51 ppb (6) N/A 6.9 μg/m3 (29) 29.0
 
April 7, 2020, 6 a.m. N/A N/A 3.4 ppb (3) N/A N/A N/A 37.0 ppb (28) 0.51 ppb (6) N/A 8.1 μg/m3 (34) 34.0
 
April 7, 2020, 5 a.m. N/A N/A 3.9 ppb (4) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.51 ppb (6) N/A 7.4 μg/m3 (31) 31.0
 
April 7, 2020, 4 a.m. N/A N/A 8.2 ppb (8) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.58 ppb (6) N/A 12.8 μg/m3 (52) 52.0
 
April 7, 2020, 3 a.m. N/A N/A 12.3 ppb (11) N/A N/A 1.0 ppb (1) 30.0 ppb (23) 0.62 ppb (7) N/A 15.5 μg/m3 (57) 57.0
 
April 7, 2020, 2 a.m. N/A N/A 10.5 ppb (10) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.59 ppb (7) N/A 11.6 μg/m3 (48) 48.0
 
April 7, 2020, 1 a.m. N/A N/A 6.1 ppb (6) N/A N/A 1.0 ppb (1) 41.0 ppb (32) 0.52 ppb (6) N/A 10.6 μg/m3 (44) 44.0
 
April 7, 2020, midnight N/A N/A 5.4 ppb (5) N/A N/A 1.0 ppb (1) 43.0 ppb (33) 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
April 6, 2020, 11 p.m. N/A N/A 5.1 ppb (5) N/A N/A 1.0 ppb (1) 46.0 ppb (35) 0.51 ppb (6) N/A 10.3 μg/m3 (43) 43.0
 
April 6, 2020, 10 p.m. N/A N/A 3.4 ppb (3) N/A N/A 1.0 ppb (1) 52.0 ppb (40) 0.47 ppb (5) N/A 8.6 μg/m3 (36) 40.0
 
April 6, 2020, 9 p.m. N/A N/A 2.1 ppb (2) N/A N/A 1.0 ppb (1) 53.0 ppb (41) 0.45 ppb (5) N/A 3.1 μg/m3 (13) 41.0
 
April 6, 2020, 8 p.m. N/A N/A 2.5 ppb (2) N/A N/A 1.0 ppb (1) 52.0 ppb (40) 0.46 ppb (5) N/A 3.7 μg/m3 (15) 40.0
 
April 6, 2020, 7 p.m. N/A N/A 2.3 ppb (2) N/A N/A 1.0 ppb (1) 49.0 ppb (38) 0.46 ppb (5) N/A 4.1 μg/m3 (17) 38.0
 
April 6, 2020, 6 p.m. N/A N/A 1.9 ppb (2) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.46 ppb (5) N/A -2.3 μg/m3 (0) 36.0
 
April 6, 2020, 5 p.m. N/A N/A 3.2 ppb (3) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.46 ppb (5) N/A 4.4 μg/m3 (18) 35.0
 
April 6, 2020, 4 p.m. N/A N/A 3.2 ppb (3) N/A N/A 1.0 ppb (1) 40.0 ppb (31) 0.47 ppb (5) N/A 7.1 μg/m3 (30) 31.0
 
April 6, 2020, 3 p.m. N/A N/A 6.1 ppb (6) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.49 ppb (5) N/A 4.7 μg/m3 (20) 25.0
 
April 6, 2020, 2 p.m. N/A N/A 12.7 ppb (12) N/A N/A 1.0 ppb (1) 26.0 ppb (20) 0.52 ppb (6) N/A 8.3 μg/m3 (35) 35.0
 
April 6, 2020, 1 p.m. N/A N/A 36.5 ppb (34) N/A N/A 1.0 ppb (1) 15.0 ppb (12) 0.65 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
April 6, 2020, noon N/A N/A 65.7 ppb (62) N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.86 ppb (10) N/A 14.5 μg/m3 (55) 62.0
 
April 6, 2020, 11 a.m. N/A N/A 59.0 ppb (55) N/A N/A 1.0 ppb (1) 2.0 ppb (2) 0.81 ppb (9) N/A 13.9 μg/m3 (54) 55.0
 
April 6, 2020, 10 a.m. N/A N/A 43.6 ppb (40) N/A N/A 1.0 ppb (1) 1.0 ppb (1) 0.76 ppb (8) N/A 14.1 μg/m3 (54) 54.0
 
April 6, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 2.0 ppb (2) 0.78 ppb (9) N/A 15.5 μg/m3 (57) 57.0
 
April 6, 2020, 8 a.m. N/A N/A 29.2 ppb (27) N/A N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 14.5 μg/m3 (55) 55.0
 
April 6, 2020, 7 a.m. N/A N/A 22.8 ppb (21) N/A N/A 0.0 ppb (0) N/A 0.67 ppb (7) N/A 13.3 μg/m3 (53) 53.0
 
April 6, 2020, 6 a.m. N/A N/A 24.4 ppb (23) N/A N/A N/A 7.0 ppb (5) 0.72 ppb (8) N/A 18.8 μg/m3 (64) 64.0
 
April 6, 2020, 5 a.m. N/A N/A 28.1 ppb (26) N/A N/A 0.0 ppb (0) 6.0 ppb (5) 0.78 ppb (9) N/A 23.1 μg/m3 (74) 74.0
 
April 6, 2020, 4 a.m. N/A N/A 23.1 ppb (21) N/A N/A 0.0 ppb (0) 10.0 ppb (8) 0.69 ppb (8) N/A 18.2 μg/m3 (63) 63.0
 
April 6, 2020, 3 a.m. N/A N/A 16.2 ppb (15) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.61 ppb (7) N/A 14.7 μg/m3 (56) 56.0
 
April 6, 2020, 2 a.m. N/A N/A 5.5 ppb (5) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.55 ppb (6) N/A 11.8 μg/m3 (49) 49.0
 
April 6, 2020, 1 a.m. N/A N/A 6.1 ppb (6) N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.53 ppb (6) N/A 14.3 μg/m3 (55) 55.0
 
April 6, 2020, midnight N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.49 ppb (5) N/A 6.7 μg/m3 (28) 32.0
 
April 5, 2020, 11 p.m. N/A N/A -0.1 ppb (0) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.42 ppb (5) N/A 4.0 μg/m3 (17) 38.0
 
April 5, 2020, 10 p.m. N/A N/A 0.4 ppb (0) N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.43 ppb (5) N/A 4.7 μg/m3 (20) 38.0
 
April 5, 2020, 9 p.m. N/A N/A 1.1 ppb (1) N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.43 ppb (5) N/A 6.2 μg/m3 (26) 38.0
 
April 5, 2020, 8 p.m. N/A N/A 0.3 ppb (0) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.43 ppb (5) N/A 4.7 μg/m3 (20) 37.0
 
April 5, 2020, 7 p.m. N/A N/A 0.5 ppb (0) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 36.0
 
April 5, 2020, 6 p.m. N/A N/A 0.8 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.43 ppb (5) N/A 4.7 μg/m3 (20) 35.0
 
April 5, 2020, 5 p.m. N/A N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.43 ppb (5) N/A 4.7 μg/m3 (20) 33.0
 
April 5, 2020, 4 p.m. N/A N/A 2.3 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.43 ppb (5) N/A 3.4 μg/m3 (14) 32.0
 
April 5, 2020, 3 p.m. N/A N/A 1.7 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.42 ppb (5) N/A 3.4 μg/m3 (14) 31.0
 
April 5, 2020, 2 p.m. N/A N/A 0.9 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.42 ppb (5) N/A 3.6 μg/m3 (15) 29.0
 
April 5, 2020, 1 p.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.43 ppb (5) N/A 4.2 μg/m3 (18) 27.0
 
April 5, 2020, noon N/A N/A 3.2 ppb (3) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.44 ppb (5) N/A 4.2 μg/m3 (18) 25.0
 
April 5, 2020, 11 a.m. N/A N/A 3.3 ppb (3) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.45 ppb (5) N/A 4.1 μg/m3 (17) 24.0
 
April 5, 2020, 10 a.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.44 ppb (5) N/A 4.5 μg/m3 (19) 22.0
 
April 5, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.44 ppb (5) N/A 3.2 μg/m3 (13) 23.0
 
April 5, 2020, 8 a.m. N/A N/A 3.4 ppb (3) N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 2.9 μg/m3 (12) 18.0
 
April 5, 2020, 7 a.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.43 ppb (5) N/A 3.8 μg/m3 (16) 16.0
 
April 5, 2020, 6 a.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 26.0 ppb (20) 0.43 ppb (5) N/A 2.1 μg/m3 (9) 20.0
 
April 5, 2020, 5 a.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.45 ppb (5) N/A 2.8 μg/m3 (12) 21.0
 
April 5, 2020, 4 a.m. N/A N/A 0.6 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.43 ppb (5) N/A -0.8 μg/m3 (0) 23.0
 
April 5, 2020, 3 a.m. N/A N/A 0.8 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.43 ppb (5) N/A 4.6 μg/m3 (19) 22.0
 
April 5, 2020, 2 a.m. N/A N/A -0.4 ppb (0) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.43 ppb (5) N/A 2.7 μg/m3 (11) 18.0
 
April 5, 2020, 1 a.m. N/A N/A 0.1 ppb (0) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.44 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
April 5, 2020, midnight N/A N/A 0.0 ppb (0) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.44 ppb (5) N/A 2.9 μg/m3 (12) 21.0
 
April 4, 2020, 11 p.m. N/A N/A 0.6 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.5 ppb (6) N/A 3.7 μg/m3 (15) 19.0
 
April 4, 2020, 10 p.m. N/A N/A 1.1 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.44 ppb (5) N/A 4.3 μg/m3 (18) 20.0
 
April 4, 2020, 9 p.m. N/A N/A 0.9 ppb (1) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.45 ppb (5) N/A 2.4 μg/m3 (10) 16.0
 
April 4, 2020, 8 p.m. N/A N/A 0.4 ppb (0) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.44 ppb (5) N/A 2.1 μg/m3 (9) 18.0
 
April 4, 2020, 7 p.m. N/A N/A 0.8 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.44 ppb (5) N/A 2.7 μg/m3 (11) 25.0
 
April 4, 2020, 6 p.m. N/A N/A 1.6 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.44 ppb (5) N/A 2.8 μg/m3 (12) 30.0
 
April 4, 2020, 5 p.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.45 ppb (5) N/A 2.2 μg/m3 (9) 26.0
 
April 4, 2020, 4 p.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.47 ppb (5) N/A 0.6 μg/m3 (2) 13.0
 
April 4, 2020, 3 p.m. N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.46 ppb (5) N/A 0.3 μg/m3 (1) 8.0
 
April 4, 2020, 2 p.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) 16.0 ppb (12) 0.47 ppb (5) N/A 6.7 μg/m3 (28) 28.0
 
April 4, 2020, 1 p.m. N/A N/A 3.7 ppb (3) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.5 ppb (6) N/A 14.7 μg/m3 (56) 56.0
 
April 4, 2020, noon N/A N/A 10.2 ppb (9) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.49 ppb (5) N/A 7.2 μg/m3 (30) 30.0
 
April 4, 2020, 11 a.m. N/A N/A 6.7 ppb (6) N/A N/A 1.0 ppb (1) 30.0 ppb (23) 0.47 ppb (5) N/A 9.1 μg/m3 (38) 38.0
 
April 4, 2020, 10 a.m. N/A N/A 4.9 ppb (5) N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.45 ppb (5) N/A 7.7 μg/m3 (32) 32.0
 
April 4, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.44 ppb (5) N/A 6.3 μg/m3 (26) 26.0
 
April 4, 2020, 8 a.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 4.8 μg/m3 (20) 25.0
 
April 4, 2020, 7 a.m. N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.46 ppb (5) N/A 3.4 μg/m3 (14) 14.0
 
April 4, 2020, 6 a.m. N/A N/A 5.6 ppb (5) N/A N/A N/A 26.0 ppb (20) 0.62 ppb (7) N/A 15.5 μg/m3 (57) 57.0
 
April 4, 2020, 5 a.m. N/A N/A 16.9 ppb (16) N/A N/A 1.0 ppb (1) 12.0 ppb (9) 0.91 ppb (10) N/A 34.3 μg/m3 (97) 97.0
 
April 4, 2020, 4 a.m. N/A N/A 25.4 ppb (24) N/A N/A 1.0 ppb (1) 10.0 ppb (8) 1.08 ppb (12) N/A 46.1 μg/m3 (126) 126.0
 
April 4, 2020, 3 a.m. N/A N/A 41.9 ppb (39) N/A N/A 1.0 ppb (1) 6.0 ppb (5) 1.11 ppb (12) N/A 45.5 μg/m3 (125) 125.0
 
April 4, 2020, 2 a.m. N/A N/A 21.9 ppb (20) N/A N/A 1.0 ppb (1) 16.0 ppb (12) 0.93 ppb (10) N/A 36.6 μg/m3 (103) 103.0
 
April 4, 2020, 1 a.m. N/A N/A 22.9 ppb (21) N/A N/A 1.0 ppb (1) 22.0 ppb (17) 0.86 ppb (10) N/A 31.5 μg/m3 (91) 91.0
 
April 4, 2020, midnight N/A N/A 13.0 ppb (12) N/A N/A 1.0 ppb (1) 38.0 ppb (29) 0.63 ppb (7) N/A 15.9 μg/m3 (58) 58.0
 
April 3, 2020, 11 p.m. N/A N/A 5.1 ppb (5) N/A N/A 1.0 ppb (1) 51.0 ppb (39) 0.49 ppb (5) N/A 10.4 μg/m3 (43) 43.0
 
April 3, 2020, 10 p.m. N/A N/A 5.1 ppb (5) N/A N/A 1.0 ppb (1) 53.0 ppb (41) 0.45 ppb (5) N/A 11.8 μg/m3 (49) 49.0
 
April 3, 2020, 9 p.m. N/A N/A 3.6 ppb (3) N/A N/A 1.0 ppb (1) 55.0 ppb (42) 0.43 ppb (5) N/A 7.1 μg/m3 (30) 42.0
 
April 3, 2020, 8 p.m. N/A N/A 3.9 ppb (4) N/A N/A 1.0 ppb (1) 53.0 ppb (41) 0.42 ppb (5) N/A 6.6 μg/m3 (28) 41.0
 
April 3, 2020, 7 p.m. N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.39 ppb (4) N/A 6.2 μg/m3 (26) 40.0
 
April 3, 2020, 6 p.m. N/A N/A 2.1 ppb (2) N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.39 ppb (4) N/A 6.3 μg/m3 (26) 38.0
 
April 3, 2020, 5 p.m. N/A N/A 1.3 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.39 ppb (4) N/A 3.3 μg/m3 (14) 36.0
 
April 3, 2020, 4 p.m. N/A N/A 0.8 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.4 ppb (4) N/A 2.5 μg/m3 (10) 35.0
 
April 3, 2020, 3 p.m. N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.41 ppb (5) N/A 4.9 μg/m3 (20) 32.0
 
April 3, 2020, 2 p.m. N/A N/A 2.3 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.4 ppb (4) N/A 5.1 μg/m3 (21) 29.0
 
April 3, 2020, 1 p.m. N/A N/A 11.1 ppb (10) N/A N/A 1.0 ppb (1) 30.0 ppb (23) 0.48 ppb (5) N/A 1.0 μg/m3 (4) 23.0
 
April 3, 2020, noon N/A N/A 40.7 ppb (38) N/A N/A 1.0 ppb (1) 5.0 ppb (4) 0.71 ppb (8) N/A 10.9 μg/m3 (45) 45.0
 
April 3, 2020, 11 a.m. N/A N/A 52.4 ppb (49) N/A N/A 1.0 ppb (1) 2.0 ppb (2) 0.82 ppb (9) N/A 13.5 μg/m3 (53) 53.0
 
April 3, 2020, 10 a.m. N/A N/A 37.5 ppb (35) N/A N/A 1.0 ppb (1) 2.0 ppb (2) 0.67 ppb (7) N/A 9.9 μg/m3 (41) 41.0
 
April 3, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) 0.61 ppb (7) N/A 12.6 μg/m3 (51) 51.0
 
April 3, 2020, 8 a.m. N/A N/A 30.3 ppb (28) N/A N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 10.5 μg/m3 (44) 44.0
 
April 3, 2020, 7 a.m. N/A N/A 21.3 ppb (20) N/A N/A 0.0 ppb (0) N/A 0.55 ppb (6) N/A 12.5 μg/m3 (51) 51.0
 
April 3, 2020, 6 a.m. N/A N/A 16.9 ppb (16) N/A N/A N/A 10.0 ppb (8) 0.56 ppb (6) N/A 10.4 μg/m3 (43) 43.0
 
April 3, 2020, 5 a.m. N/A N/A 12.3 ppb (11) N/A N/A 0.0 ppb (0) 15.0 ppb (12) 0.52 ppb (6) N/A 7.4 μg/m3 (31) 31.0
 
April 3, 2020, 4 a.m. N/A N/A 8.3 ppb (8) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.47 ppb (5) N/A 9.8 μg/m3 (41) 41.0
 
April 3, 2020, 3 a.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.45 ppb (5) N/A 5.5 μg/m3 (23) 23.0
 
April 3, 2020, 2 a.m. N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.45 ppb (5) N/A 5.4 μg/m3 (23) 24.0
 
April 3, 2020, 1 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.43 ppb (5) N/A 6.4 μg/m3 (27) 27.0
 
April 3, 2020, midnight N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.43 ppb (5) N/A 5.5 μg/m3 (23) 28.0
 
April 2, 2020, 11 p.m. N/A N/A 2.1 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.42 ppb (5) N/A 3.3 μg/m3 (14) 30.0
 
April 2, 2020, 10 p.m. N/A N/A 2.1 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.41 ppb (5) N/A 7.1 μg/m3 (30) 32.0
 
April 2, 2020, 9 p.m. N/A N/A 1.5 ppb (1) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.4 ppb (4) N/A 8.0 μg/m3 (33) 36.0
 
April 2, 2020, 8 p.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.4 ppb (4) N/A 6.3 μg/m3 (26) 37.0
 
April 2, 2020, 7 p.m. N/A N/A 3.3 ppb (3) N/A N/A 1.0 ppb (1) 46.0 ppb (35) 0.39 ppb (4) N/A 5.2 μg/m3 (22) 35.0
 
April 2, 2020, 6 p.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.39 ppb (4) N/A N/A 35.0
 
April 2, 2020, 5 p.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.4 ppb (4) N/A N/A 32.0
 
April 2, 2020, 4 p.m. N/A N/A 2.3 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.4 ppb (4) N/A N/A 28.0
 
April 2, 2020, 3 p.m. N/A N/A 6.4 ppb (6) N/A N/A 1.0 ppb (1) 31.0 ppb (24) 0.42 ppb (5) N/A N/A 24.0
 
April 2, 2020, 2 p.m. N/A N/A 32.5 ppb (30) N/A N/A 1.0 ppb (1) 15.0 ppb (12) 0.57 ppb (6) N/A N/A 30.0
 
April 2, 2020, 1 p.m. N/A N/A 67.0 ppb (64) N/A N/A 1.0 ppb (1) 6.0 ppb (5) 0.73 ppb (8) N/A N/A 64.0
 
April 2, 2020, noon N/A N/A 97.0 ppb (96) N/A N/A 1.0 ppb (1) 2.0 ppb (2) 0.92 ppb (10) N/A N/A 96.0
 
April 2, 2020, 11 a.m. N/A N/A 56.3 ppb (52) N/A N/A 1.0 ppb (1) 1.0 ppb (1) 0.76 ppb (8) N/A N/A 52.0
 
April 2, 2020, 10 a.m. N/A N/A 42.2 ppb (39) N/A N/A 1.0 ppb (1) 1.0 ppb (1) 0.69 ppb (8) N/A N/A 39.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 3.0 ppb (2) 0.53 ppb (6) N/A N/A 6.0
 
April 2, 2020, 8 a.m. N/A N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A N/A 17.0
 
April 2, 2020, 7 a.m. N/A N/A 17.7 ppb (16) N/A N/A 0.0 ppb (0) N/A 0.53 ppb (6) N/A N/A 16.0
 
April 2, 2020, 6 a.m. N/A N/A 18.2 ppb (17) N/A N/A N/A 5.0 ppb (4) 0.55 ppb (6) N/A N/A 17.0
 
April 2, 2020, 5 a.m. N/A N/A 5.1 ppb (5) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.46 ppb (5) N/A N/A 13.0
 
April 2, 2020, 4 a.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.48 ppb (5) N/A N/A 15.0
 
April 2, 2020, 3 a.m. N/A N/A 6.4 ppb (6) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.49 ppb (5) N/A N/A 15.0
 
April 2, 2020, 2 a.m. N/A N/A 13.4 ppb (12) N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.54 ppb (6) N/A N/A 12.0
 
April 2, 2020, 1 a.m. N/A N/A 5.8 ppb (5) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.46 ppb (5) N/A N/A 18.0
 
April 2, 2020, midnight N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.45 ppb (5) N/A N/A 18.0
 
April 1, 2020, 11 p.m. N/A N/A 3.4 ppb (3) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.43 ppb (5) N/A N/A 21.0
 
April 1, 2020, 10 p.m. N/A N/A 4.1 ppb (4) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.44 ppb (5) N/A N/A 19.0
 
April 1, 2020, 9 p.m. N/A N/A 4.6 ppb (4) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.44 ppb (5) N/A N/A 22.0
 
April 1, 2020, 8 p.m. N/A N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.4 ppb (4) N/A N/A 23.0
 
April 1, 2020, 7 p.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.41 ppb (5) N/A N/A 21.0
 
April 1, 2020, 6 p.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.43 ppb (5) N/A N/A 19.0
 
April 1, 2020, 5 p.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.41 ppb (5) N/A N/A 18.0
 
April 1, 2020, 4 p.m. N/A N/A 4.9 ppb (5) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.44 ppb (5) N/A N/A 18.0
 
April 1, 2020, 3 p.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.43 ppb (5) N/A N/A 18.0
 
April 1, 2020, 2 p.m. N/A N/A 8.3 ppb (8) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.46 ppb (5) N/A 4.9 μg/m3 (20) 20.0
 
April 1, 2020, 1 p.m. N/A N/A 6.6 ppb (6) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.41 ppb (5) N/A 6.7 μg/m3 (28) 28.0
 
April 1, 2020, noon N/A N/A 6.7 ppb (6) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.43 ppb (5) N/A 6.5 μg/m3 (27) 27.0
 
April 1, 2020, 11 a.m. N/A N/A 5.1 ppb (5) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.42 ppb (5) N/A 6.9 μg/m3 (29) 29.0
 
April 1, 2020, 10 a.m. N/A N/A 4.4 ppb (4) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.47 ppb (5) N/A 6.2 μg/m3 (26) 26.0
 
April 1, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.38 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
April 1, 2020, 8 a.m. N/A N/A 3.3 ppb (3) N/A N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.5 μg/m3 (15) 19.0
 
April 1, 2020, 7 a.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.4 ppb (4) N/A 3.4 μg/m3 (14) 14.0
 
April 1, 2020, 6 a.m. N/A N/A 1.9 ppb (2) N/A N/A N/A 25.0 ppb (19) 0.39 ppb (4) N/A 3.8 μg/m3 (16) 19.0
 
April 1, 2020, 5 a.m. N/A N/A 0.9 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.39 ppb (4) N/A 2.9 μg/m3 (12) 19.0
 
April 1, 2020, 4 a.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.42 ppb (5) N/A 3.5 μg/m3 (15) 18.0
 
April 1, 2020, 3 a.m. N/A N/A 3.2 ppb (3) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.43 ppb (5) N/A 5.7 μg/m3 (24) 24.0
 
April 1, 2020, 2 a.m. N/A N/A 5.1 ppb (5) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.42 ppb (5) N/A 6.4 μg/m3 (27) 27.0
 
April 1, 2020, 1 a.m. N/A N/A 6.5 ppb (6) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.4 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
April 1, 2020, midnight N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.42 ppb (5) N/A 7.4 μg/m3 (31) 31.0
 
March 31, 2020, 11 p.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.42 ppb (5) N/A 6.6 μg/m3 (28) 28.0