ID: 2413

AQSQID: 440070030

Site Name: Near Road

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

Updated: Jan. 16, 2021, 1:31 a.m.

Location: Providence (Downtown), RI

Reporting: True, Located: True

Current AQI: 30.0

Providence (Downtown) RI, US: 41.829495, -71.417457

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 16, 2021, midnight 24.3 ppb (23) 7.9 ppb (8) N/A 16.0 ppb (16) N/A N/A N/A 0.36 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 15, 2021, 11 p.m. 25.4 ppb (24) 9.5 ppb (9) N/A 16.0 ppb (16) N/A N/A N/A 0.43 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 15, 2021, 10 p.m. 22.3 ppb (22) 10.0 ppb (10) N/A 12.0 ppb (12) N/A N/A N/A 0.39 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 15, 2021, 9 p.m. 26.2 ppb (25) 13.8 ppb (14) N/A 12.0 ppb (12) N/A N/A N/A 0.4 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2021, 8 p.m. 28.6 ppb (27) 18.1 ppb (18) N/A 10.0 ppb (10) N/A N/A N/A 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 15, 2021, 7 p.m. 27.0 ppb (26) 13.8 ppb (14) N/A 13.0 ppb (13) N/A N/A N/A 0.38 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2021, 6 p.m. 25.2 ppb (24) 13.8 ppb (14) N/A 11.0 ppb (11) N/A N/A N/A 0.42 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2021, 5 p.m. 24.7 ppb (24) 11.6 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2021, 4 p.m. 25.0 ppb (24) 11.0 ppb (11) N/A 14.0 ppb (14) N/A N/A N/A 0.35 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2021, 3 p.m. 28.1 ppb (27) 18.2 ppb (18) N/A 10.0 ppb (10) N/A N/A N/A 0.37 ppb (5) N/A 27.0 μg/m3 (83) 83.0
 
Jan. 15, 2021, 2 p.m. 34.9 ppb (33) 19.0 ppb (18) N/A 16.0 ppb (16) N/A N/A N/A 0.44 ppb (5) N/A 31.0 μg/m3 (91) 91.0
 
Jan. 15, 2021, 1 p.m. 77.8 ppb (77) 56.0 ppb (54) N/A 22.0 ppb (21) N/A N/A N/A 0.72 ppb (8) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 15, 2021, noon 49.6 ppb (47) 31.0 ppb (30) N/A 19.0 ppb (18) N/A N/A N/A 0.57 ppb (7) N/A 25.0 μg/m3 (79) 79.0
 
Jan. 15, 2021, 11 a.m. 52.3 ppb (50) 32.5 ppb (31) N/A 20.0 ppb (19) N/A N/A N/A 0.53 ppb (6) N/A 23.0 μg/m3 (74) 74.0
 
Jan. 15, 2021, 10 a.m. 49.1 ppb (47) 29.5 ppb (28) N/A 20.0 ppb (19) N/A N/A N/A 0.52 ppb (6) N/A 24.0 μg/m3 (77) 77.0
 
Jan. 15, 2021, 9 a.m. 41.8 ppb (40) 23.2 ppb (22) N/A 19.0 ppb (18) N/A N/A N/A 0.45 ppb (6) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 15, 2021, 8 a.m. 45.1 ppb (43) 26.4 ppb (25) N/A 19.0 ppb (18) N/A N/A N/A 0.42 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (62) 62.0
 
Jan. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
Jan. 15, 2021, 4 a.m. 42.8 ppb (41) 20.4 ppb (20) N/A 22.0 ppb (21) N/A N/A N/A 0.42 ppb (5) N/A 23.0 μg/m3 (74) 74.0
 
Jan. 15, 2021, 3 a.m. 42.6 ppb (41) 18.8 ppb (18) N/A 24.0 ppb (23) N/A N/A N/A 0.64 ppb (7) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 15, 2021, 2 a.m. 40.8 ppb (39) 20.1 ppb (19) N/A 21.0 ppb (20) N/A N/A N/A 0.57 ppb (7) N/A 28.0 μg/m3 (85) 85.0
 
Jan. 15, 2021, 1 a.m. 45.2 ppb (43) 24.1 ppb (23) N/A 21.0 ppb (20) N/A N/A N/A 0.7 ppb (8) N/A 30.0 μg/m3 (89) 89.0
 
Jan. 15, 2021, midnight 40.2 ppb (38) 18.3 ppb (18) N/A 22.0 ppb (21) N/A N/A N/A 0.59 ppb (7) N/A 24.0 μg/m3 (77) 77.0
 
Jan. 14, 2021, 11 p.m. 46.3 ppb (44) 21.7 ppb (21) N/A 25.0 ppb (24) N/A N/A N/A 0.64 ppb (7) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 14, 2021, 10 p.m. 37.5 ppb (36) 12.5 ppb (12) N/A 25.0 ppb (24) N/A N/A N/A 0.55 ppb (7) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 14, 2021, 9 p.m. 37.1 ppb (35) 12.0 ppb (12) N/A 25.0 ppb (24) N/A N/A N/A 0.53 ppb (6) N/A 24.0 μg/m3 (77) 77.0
 
Jan. 14, 2021, 8 p.m. 48.9 ppb (47) 20.6 ppb (20) N/A 28.0 ppb (27) N/A N/A N/A 0.57 ppb (7) N/A 24.0 μg/m3 (77) 77.0
 
Jan. 14, 2021, 7 p.m. 64.4 ppb (63) 32.4 ppb (31) N/A 32.0 ppb (31) N/A N/A N/A 0.79 ppb (10) N/A 30.0 μg/m3 (89) 89.0
 
Jan. 14, 2021, 6 p.m. 65.8 ppb (64) 40.0 ppb (38) N/A 26.0 ppb (25) N/A N/A N/A 0.74 ppb (8) N/A 25.0 μg/m3 (79) 79.0
 
Jan. 14, 2021, 5 p.m. 49.6 ppb (47) 30.7 ppb (29) N/A 19.0 ppb (18) N/A N/A N/A 0.55 ppb (7) N/A 22.0 μg/m3 (72) 72.0
 
Jan. 14, 2021, 4 p.m. 60.1 ppb (58) 35.1 ppb (34) N/A 25.0 ppb (24) N/A N/A N/A 0.59 ppb (7) N/A 27.0 μg/m3 (83) 83.0
 
Jan. 14, 2021, 3 p.m. 92.2 ppb (92) 63.3 ppb (61) N/A 29.0 ppb (28) N/A N/A N/A 0.83 ppb (10) N/A 27.0 μg/m3 (83) 83.0
 
Jan. 14, 2021, 2 p.m. 142.9 ppb (109) 118.1 ppb (105) N/A 25.0 ppb (24) N/A N/A N/A 1.15 ppb (13) N/A 31.0 μg/m3 (91) 105.0
 
Jan. 14, 2021, 1 p.m. 184.9 ppb (117) 151.0 ppb (111) N/A 34.0 ppb (33) N/A N/A N/A 1.48 ppb (18) N/A 34.0 μg/m3 (98) 111.0
 
Jan. 14, 2021, noon 178.9 ppb (116) 141.9 ppb (109) N/A 37.0 ppb (35) N/A N/A N/A 1.41 ppb (16) N/A 30.0 μg/m3 (89) 109.0
 
Jan. 14, 2021, 11 a.m. 149.1 ppb (111) 119.6 ppb (105) N/A 30.0 ppb (29) N/A N/A N/A 1.18 ppb (14) N/A 27.0 μg/m3 (83) 105.0
 
Jan. 14, 2021, 10 a.m. 106.9 ppb (103) 78.2 ppb (77) N/A 29.0 ppb (28) N/A N/A N/A 0.86 ppb (11) N/A 26.0 μg/m3 (81) 81.0
 
Jan. 14, 2021, 9 a.m. 84.5 ppb (84) 57.5 ppb (55) N/A 27.0 ppb (26) N/A N/A N/A 0.54 ppb (6) N/A 24.0 μg/m3 (77) 77.0
 
Jan. 14, 2021, 8 a.m. 48.4 ppb (46) 26.1 ppb (25) N/A 22.0 ppb (21) N/A N/A N/A 0.46 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
Jan. 14, 2021, 7 a.m. 40.6 ppb (39) 17.9 ppb (17) N/A 23.0 ppb (22) N/A N/A N/A 0.4 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 14, 2021, 6 a.m. 28.2 ppb (27) 10.6 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A 0.47 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 14, 2021, 5 a.m. 39.3 ppb (38) 15.7 ppb (15) N/A 24.0 ppb (23) N/A N/A N/A 0.5 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 14, 2021, 4 a.m. 49.3 ppb (47) 24.7 ppb (24) N/A 25.0 ppb (24) N/A N/A N/A 0.4 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 14, 2021, 3 a.m. 47.0 ppb (45) 25.4 ppb (24) N/A 22.0 ppb (21) N/A N/A N/A 0.59 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 14, 2021, 2 a.m. 46.3 ppb (44) 24.5 ppb (24) N/A 22.0 ppb (21) N/A N/A N/A 0.62 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 14, 2021, 1 a.m. 49.2 ppb (47) 27.0 ppb (26) N/A 22.0 ppb (21) N/A N/A N/A 0.69 ppb (8) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 14, 2021, midnight 47.0 ppb (45) 26.7 ppb (26) N/A 20.0 ppb (19) N/A N/A N/A 0.65 ppb (8) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 13, 2021, 11 p.m. 43.1 ppb (41) 22.7 ppb (22) N/A 20.0 ppb (19) N/A N/A N/A 0.59 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2021, 10 p.m. 44.3 ppb (42) 28.3 ppb (27) N/A 16.0 ppb (16) N/A N/A N/A 0.62 ppb (7) N/A 6.0 μg/m3 (25) 27.0
 
Jan. 13, 2021, 9 p.m. 47.3 ppb (45) 28.0 ppb (27) N/A 19.0 ppb (18) N/A N/A N/A 0.59 ppb (7) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 13, 2021, 8 p.m. 52.3 ppb (50) 31.7 ppb (30) N/A 21.0 ppb (20) N/A N/A N/A 0.58 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 13, 2021, 7 p.m. 47.8 ppb (46) 33.1 ppb (32) N/A 15.0 ppb (15) N/A N/A N/A 0.57 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2021, 6 p.m. 57.2 ppb (55) 38.1 ppb (36) N/A 19.0 ppb (18) N/A N/A N/A 0.53 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2021, 5 p.m. 52.5 ppb (50) 37.1 ppb (35) N/A 16.0 ppb (16) N/A N/A N/A 0.53 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2021, 4 p.m. 55.4 ppb (53) 44.0 ppb (42) N/A 11.0 ppb (11) N/A N/A N/A 0.53 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 13, 2021, 3 p.m. 87.2 ppb (87) 71.1 ppb (70) N/A 16.0 ppb (16) N/A N/A N/A 0.7 ppb (8) N/A 14.0 μg/m3 (55) 70.0
 
Jan. 13, 2021, 2 p.m. 81.9 ppb (81) 59.9 ppb (58) N/A 22.0 ppb (21) N/A N/A N/A 0.73 ppb (8) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 13, 2021, 1 p.m. 93.6 ppb (94) 69.1 ppb (68) N/A 25.0 ppb (24) N/A N/A N/A 0.78 ppb (10) N/A 17.0 μg/m3 (62) 68.0
 
Jan. 13, 2021, noon 103.4 ppb (102) 77.2 ppb (76) N/A 26.0 ppb (25) N/A N/A N/A 0.91 ppb (11) N/A 12.0 μg/m3 (50) 76.0
 
Jan. 13, 2021, 11 a.m. 87.3 ppb (87) 62.0 ppb (60) N/A 25.0 ppb (24) N/A N/A N/A 0.74 ppb (8) N/A 11.0 μg/m3 (46) 60.0
 
Jan. 13, 2021, 10 a.m. 70.6 ppb (69) 47.9 ppb (46) N/A 23.0 ppb (22) N/A N/A N/A 0.55 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2021, 9 a.m. 52.9 ppb (50) 32.9 ppb (32) N/A 20.0 ppb (19) N/A N/A N/A 0.46 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 13, 2021, 8 a.m. 39.3 ppb (38) 25.2 ppb (24) N/A 14.0 ppb (14) N/A N/A N/A 0.36 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2021, 7 a.m. 30.8 ppb (30) 14.8 ppb (14) N/A 16.0 ppb (16) N/A N/A N/A 0.32 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 13, 2021, 6 a.m. 28.4 ppb (27) 13.2 ppb (13) N/A 15.0 ppb (15) N/A N/A N/A 0.33 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2021, 5 a.m. 33.3 ppb (32) 15.4 ppb (15) N/A 18.0 ppb (17) N/A N/A N/A 0.47 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 13, 2021, 4 a.m. 32.4 ppb (31) 16.2 ppb (16) N/A 16.0 ppb (16) N/A N/A N/A 0.41 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 13, 2021, 3 a.m. 42.9 ppb (41) 29.2 ppb (28) N/A 14.0 ppb (14) N/A N/A N/A 0.6 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2021, 2 a.m. 45.5 ppb (43) 28.4 ppb (27) N/A 17.0 ppb (17) N/A N/A N/A 0.68 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2021, 1 a.m. 47.7 ppb (45) 29.7 ppb (29) N/A 18.0 ppb (17) N/A N/A N/A 0.71 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2021, midnight 58.7 ppb (57) 36.0 ppb (34) N/A 23.0 ppb (22) N/A N/A N/A 0.82 ppb (10) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 12, 2021, 11 p.m. 66.6 ppb (65) 39.8 ppb (38) N/A 27.0 ppb (26) N/A N/A N/A 0.92 ppb (11) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 12, 2021, 10 p.m. 88.2 ppb (88) 65.6 ppb (64) N/A 23.0 ppb (22) N/A N/A N/A 1.02 ppb (12) N/A 10.0 μg/m3 (42) 64.0
 
Jan. 12, 2021, 9 p.m. 83.0 ppb (82) 58.2 ppb (56) N/A 25.0 ppb (24) N/A N/A N/A 0.93 ppb (11) N/A 8.0 μg/m3 (34) 56.0
 
Jan. 12, 2021, 8 p.m. 66.6 ppb (65) 50.2 ppb (48) N/A 16.0 ppb (16) N/A N/A N/A 0.67 ppb (8) N/A 7.0 μg/m3 (30) 48.0
 
Jan. 12, 2021, 7 p.m. 61.6 ppb (60) 41.3 ppb (39) N/A 20.0 ppb (19) N/A N/A N/A 0.62 ppb (7) N/A 8.0 μg/m3 (34) 39.0
 
Jan. 12, 2021, 6 p.m. 56.2 ppb (54) 41.2 ppb (39) N/A 15.0 ppb (15) N/A N/A N/A 0.59 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 12, 2021, 5 p.m. 57.8 ppb (56) 44.2 ppb (42) N/A 14.0 ppb (14) N/A N/A N/A 0.59 ppb (7) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 12, 2021, 4 p.m. 62.2 ppb (60) 47.4 ppb (45) N/A 15.0 ppb (15) N/A N/A N/A 0.57 ppb (7) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 12, 2021, 3 p.m. 79.3 ppb (78) 58.3 ppb (56) N/A 21.0 ppb (20) N/A N/A N/A 0.77 ppb (10) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 12, 2021, 2 p.m. 92.1 ppb (92) 69.9 ppb (68) N/A 22.0 ppb (21) N/A N/A N/A 0.73 ppb (8) N/A 16.0 μg/m3 (60) 68.0
 
Jan. 12, 2021, 1 p.m. 103.0 ppb (102) 76.0 ppb (75) N/A 27.0 ppb (26) N/A N/A N/A 0.78 ppb (10) N/A 20.0 μg/m3 (68) 75.0
 
Jan. 12, 2021, noon 105.5 ppb (102) 77.8 ppb (77) N/A 28.0 ppb (27) N/A N/A N/A 0.83 ppb (10) N/A 23.0 μg/m3 (74) 77.0
 
Jan. 12, 2021, 11 a.m. 120.9 ppb (105) 94.2 ppb (94) N/A 27.0 ppb (26) N/A N/A N/A 0.92 ppb (11) N/A 18.0 μg/m3 (64) 94.0
 
Jan. 12, 2021, 10 a.m. 140.5 ppb (109) 106.1 ppb (102) N/A 34.0 ppb (33) N/A N/A N/A 0.95 ppb (11) N/A 19.0 μg/m3 (66) 102.0
 
Jan. 12, 2021, 9 a.m. 98.7 ppb (99) 66.2 ppb (64) N/A 33.0 ppb (32) N/A N/A N/A 0.68 ppb (8) N/A 15.0 μg/m3 (58) 64.0
 
Jan. 12, 2021, 8 a.m. 83.8 ppb (83) 49.9 ppb (48) N/A 34.0 ppb (33) N/A N/A N/A 0.52 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 7 a.m. 62.7 ppb (61) 32.6 ppb (31) N/A 30.0 ppb (29) N/A N/A N/A 0.49 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 12, 2021, 6 a.m. 51.1 ppb (49) 24.5 ppb (24) N/A 27.0 ppb (26) N/A N/A N/A 0.56 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 5 a.m. 71.3 ppb (70) 43.3 ppb (41) N/A 28.0 ppb (27) N/A N/A N/A 0.63 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 4 a.m. 68.7 ppb (67) 39.6 ppb (38) N/A 29.0 ppb (28) N/A N/A N/A 0.62 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 12, 2021, 3 a.m. 58.3 ppb (56) 31.6 ppb (30) N/A 27.0 ppb (26) N/A N/A N/A 0.79 ppb (10) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 12, 2021, 2 a.m. 42.9 ppb (41) 20.3 ppb (20) N/A 23.0 ppb (22) N/A N/A N/A 0.59 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 12, 2021, 1 a.m. 52.6 ppb (50) 30.3 ppb (29) N/A 22.0 ppb (21) N/A N/A N/A 0.64 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 12, 2021, midnight 59.7 ppb (58) 34.2 ppb (33) N/A 26.0 ppb (25) N/A N/A N/A 0.77 ppb (10) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 11, 2021, 11 p.m. 61.5 ppb (59) 36.2 ppb (35) N/A 25.0 ppb (24) N/A N/A N/A 0.73 ppb (8) N/A 8.0 μg/m3 (34) 35.0
 
Jan. 11, 2021, 10 p.m. 66.7 ppb (65) 41.5 ppb (40) N/A 25.0 ppb (24) N/A N/A N/A 0.81 ppb (10) N/A 8.0 μg/m3 (34) 40.0
 
Jan. 11, 2021, 9 p.m. 64.9 ppb (63) 37.0 ppb (35) N/A 28.0 ppb (27) N/A N/A N/A 0.74 ppb (8) N/A 8.0 μg/m3 (34) 35.0
 
Jan. 11, 2021, 8 p.m. 75.7 ppb (75) 47.5 ppb (45) N/A 28.0 ppb (27) N/A N/A N/A 0.82 ppb (10) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 11, 2021, 7 p.m. 74.7 ppb (74) 43.4 ppb (41) N/A 31.0 ppb (30) N/A N/A N/A 0.68 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 11, 2021, 6 p.m. 64.2 ppb (62) 42.4 ppb (40) N/A 22.0 ppb (21) N/A N/A N/A 0.61 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 11, 2021, 5 p.m. 86.0 ppb (86) 59.8 ppb (58) N/A 26.0 ppb (25) N/A N/A N/A 0.72 ppb (8) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 11, 2021, 4 p.m. 132.5 ppb (107) 96.2 ppb (96) N/A 36.0 ppb (34) N/A N/A N/A 1.16 ppb (14) N/A 21.0 μg/m3 (70) 96.0
 
Jan. 11, 2021, 3 p.m. 157.4 ppb (112) 121.8 ppb (105) N/A 36.0 ppb (34) N/A N/A N/A 1.13 ppb (13) N/A 26.0 μg/m3 (81) 105.0
 
Jan. 11, 2021, 2 p.m. 204.4 ppb (121) 163.2 ppb (113) N/A 41.0 ppb (39) N/A N/A N/A 1.45 ppb (16) N/A 23.0 μg/m3 (74) 113.0
 
Jan. 11, 2021, 1 p.m. 179.4 ppb (116) 141.2 ppb (109) N/A 38.0 ppb (36) N/A N/A N/A 1.34 ppb (15) N/A 23.0 μg/m3 (74) 109.0
 
Jan. 11, 2021, noon 182.4 ppb (117) 146.1 ppb (110) N/A 36.0 ppb (34) N/A N/A N/A 1.37 ppb (16) N/A 22.0 μg/m3 (72) 110.0
 
Jan. 11, 2021, 11 a.m. 170.2 ppb (115) 139.4 ppb (109) N/A 31.0 ppb (30) N/A N/A N/A 1.22 ppb (14) N/A 17.0 μg/m3 (62) 109.0
 
Jan. 11, 2021, 10 a.m. 107.7 ppb (103) 76.7 ppb (76) N/A 31.0 ppb (30) N/A N/A N/A 0.71 ppb (8) N/A 16.0 μg/m3 (60) 76.0
 
Jan. 11, 2021, 9 a.m. 136.7 ppb (108) 102.3 ppb (102) N/A 34.0 ppb (33) N/A N/A N/A 0.97 ppb (12) N/A 13.0 μg/m3 (53) 102.0
 
Jan. 11, 2021, 8 a.m. 109.0 ppb (103) 74.2 ppb (73) N/A 35.0 ppb (34) N/A N/A N/A 0.62 ppb (7) N/A 10.0 μg/m3 (42) 73.0
 
Jan. 11, 2021, 7 a.m. 54.1 ppb (52) 25.5 ppb (25) N/A 29.0 ppb (28) N/A N/A N/A 0.44 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Jan. 11, 2021, 4 a.m. 58.7 ppb (57) 30.3 ppb (29) N/A 29.0 ppb (28) N/A N/A N/A 0.59 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 11, 2021, 3 a.m. 62.8 ppb (61) 30.5 ppb (29) N/A 32.0 ppb (31) N/A N/A N/A 0.85 ppb (10) N/A 6.0 μg/m3 (25) 31.0
 
Jan. 11, 2021, 2 a.m. 47.3 ppb (45) 23.8 ppb (23) N/A 24.0 ppb (23) N/A N/A N/A 0.68 ppb (8) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 11, 2021, 1 a.m. 64.1 ppb (62) 33.2 ppb (32) N/A 31.0 ppb (30) N/A N/A N/A 0.85 ppb (10) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 11, 2021, midnight 59.8 ppb (58) 31.2 ppb (30) N/A 29.0 ppb (28) N/A N/A N/A 0.98 ppb (12) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 10, 2021, 11 p.m. 57.5 ppb (55) 30.9 ppb (30) N/A 27.0 ppb (26) N/A N/A N/A 0.83 ppb (10) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 10, 2021, 10 p.m. 62.8 ppb (61) 34.1 ppb (33) N/A 29.0 ppb (28) N/A N/A N/A 0.79 ppb (10) N/A 6.0 μg/m3 (25) 33.0
 
Jan. 10, 2021, 9 p.m. 51.2 ppb (49) 26.7 ppb (26) N/A 24.0 ppb (23) N/A N/A N/A 0.76 ppb (10) N/A 6.0 μg/m3 (25) 26.0
 
Jan. 10, 2021, 8 p.m. 44.8 ppb (43) 25.2 ppb (24) N/A 20.0 ppb (19) N/A N/A N/A 0.66 ppb (8) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 10, 2021, 7 p.m. 29.5 ppb (28) 18.1 ppb (18) N/A 11.0 ppb (11) N/A N/A N/A 0.53 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 10, 2021, 6 p.m. 32.3 ppb (31) 18.9 ppb (18) N/A 13.0 ppb (13) N/A N/A N/A 0.54 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 10, 2021, 5 p.m. 32.4 ppb (31) 18.0 ppb (17) N/A 15.0 ppb (15) N/A N/A N/A 0.56 ppb (7) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 10, 2021, 4 p.m. 27.5 ppb (26) 15.9 ppb (15) N/A 12.0 ppb (12) N/A N/A N/A 0.49 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 10, 2021, 3 p.m. 24.6 ppb (24) 16.8 ppb (16) N/A 8.0 ppb (8) N/A N/A N/A 0.43 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 10, 2021, 2 p.m. 24.2 ppb (23) 12.6 ppb (12) N/A 12.0 ppb (12) N/A N/A N/A 0.38 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 10, 2021, 1 p.m. 34.8 ppb (33) 18.5 ppb (18) N/A 16.0 ppb (16) N/A N/A N/A 0.36 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 10, 2021, noon 26.2 ppb (25) 13.2 ppb (13) N/A 13.0 ppb (13) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 10, 2021, 11 a.m. 23.0 ppb (22) 9.3 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 10, 2021, 10 a.m. 16.5 ppb (16) 7.2 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 10, 2021, 9 a.m. 14.6 ppb (14) 5.7 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 10, 2021, 8 a.m. 19.1 ppb (19) 8.8 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.26 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 10, 2021, 7 a.m. 13.0 ppb (13) 4.7 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.31 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 10, 2021, 6 a.m. 16.7 ppb (16) 7.4 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 10, 2021, 5 a.m. 15.9 ppb (15) 7.7 ppb (8) N/A 8.0 ppb (8) N/A N/A N/A 0.35 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 10, 2021, 4 a.m. 23.6 ppb (23) 12.4 ppb (12) N/A 11.0 ppb (11) N/A N/A N/A 0.36 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 10, 2021, 3 a.m. 28.6 ppb (27) 17.6 ppb (17) N/A 11.0 ppb (11) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 10, 2021, 2 a.m. 32.1 ppb (31) 16.9 ppb (16) N/A 15.0 ppb (15) N/A N/A N/A 0.63 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 10, 2021, 1 a.m. 39.4 ppb (38) 22.0 ppb (21) N/A 17.0 ppb (17) N/A N/A N/A 0.63 ppb (7) N/A 4.0 μg/m3 (17) 21.0
 
Jan. 10, 2021, midnight 48.7 ppb (46) 27.4 ppb (26) N/A 21.0 ppb (20) N/A N/A N/A 0.8 ppb (10) N/A 6.0 μg/m3 (25) 26.0
 
Jan. 9, 2021, 11 p.m. 38.6 ppb (37) 20.0 ppb (19) N/A 19.0 ppb (18) N/A N/A N/A 0.66 ppb (8) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 9, 2021, 10 p.m. 34.6 ppb (33) 16.8 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.57 ppb (7) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 9, 2021, 9 p.m. 31.8 ppb (30) 15.6 ppb (15) N/A 16.0 ppb (16) N/A N/A N/A 0.45 ppb (6) N/A 3.0 μg/m3 (13) 16.0
 
Jan. 9, 2021, 8 p.m. 30.6 ppb (29) 20.3 ppb (20) N/A 10.0 ppb (10) N/A N/A N/A 0.53 ppb (6) N/A 4.0 μg/m3 (17) 20.0
 
Jan. 9, 2021, 7 p.m. 46.4 ppb (44) 31.8 ppb (30) N/A 15.0 ppb (15) N/A N/A N/A 0.56 ppb (7) N/A 3.0 μg/m3 (13) 30.0
 
Jan. 9, 2021, 6 p.m. 36.6 ppb (35) 22.4 ppb (22) N/A 14.0 ppb (14) N/A N/A N/A 0.45 ppb (6) N/A 3.0 μg/m3 (13) 22.0
 
Jan. 9, 2021, 5 p.m. 27.7 ppb (27) 17.6 ppb (17) N/A 10.0 ppb (10) N/A N/A N/A 0.43 ppb (5) N/A 3.0 μg/m3 (13) 17.0
 
Jan. 9, 2021, 4 p.m. 35.3 ppb (34) 22.9 ppb (22) N/A 12.0 ppb (12) N/A N/A N/A 0.43 ppb (5) N/A 3.0 μg/m3 (13) 22.0
 
Jan. 9, 2021, 3 p.m. 22.0 ppb (21) 13.4 ppb (13) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 9, 2021, 2 p.m. 31.2 ppb (30) 20.3 ppb (20) N/A 11.0 ppb (11) N/A N/A N/A 0.4 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 9, 2021, 1 p.m. 42.2 ppb (40) 25.7 ppb (25) N/A 17.0 ppb (17) N/A N/A N/A 0.49 ppb (6) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 9, 2021, noon 56.7 ppb (54) 33.6 ppb (32) N/A 23.0 ppb (22) N/A N/A N/A 0.51 ppb (6) N/A 4.0 μg/m3 (17) 32.0
 
Jan. 9, 2021, 11 a.m. 34.4 ppb (33) 18.8 ppb (18) N/A 16.0 ppb (16) N/A N/A N/A 0.41 ppb (5) N/A 4.0 μg/m3 (17) 18.0
 
Jan. 9, 2021, 10 a.m. 38.0 ppb (36) 23.7 ppb (23) N/A 14.0 ppb (14) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 23.0
 
Jan. 9, 2021, 9 a.m. 24.4 ppb (24) 12.9 ppb (13) N/A 12.0 ppb (12) N/A N/A N/A 0.3 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 9, 2021, 8 a.m. 21.8 ppb (21) 10.5 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A 0.3 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 9, 2021, 7 a.m. 17.3 ppb (17) 7.9 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 9, 2021, 6 a.m. 16.5 ppb (16) 8.0 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.26 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 9, 2021, 5 a.m. 19.3 ppb (19) 12.4 ppb (12) N/A 7.0 ppb (7) N/A N/A N/A 0.39 ppb (5) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 9, 2021, 4 a.m. 33.1 ppb (32) 16.3 ppb (16) N/A 17.0 ppb (17) N/A N/A N/A 0.45 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 9, 2021, 3 a.m. 49.8 ppb (47) 27.0 ppb (26) N/A 23.0 ppb (22) N/A N/A N/A 0.74 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 9, 2021, 2 a.m. 75.1 ppb (74) 44.6 ppb (43) N/A 31.0 ppb (30) N/A N/A N/A 0.93 ppb (11) N/A 7.0 μg/m3 (30) 43.0
 
Jan. 9, 2021, 1 a.m. 70.5 ppb (69) 42.0 ppb (40) N/A 29.0 ppb (28) N/A N/A N/A 0.99 ppb (12) N/A 9.0 μg/m3 (38) 40.0