AQSQID: 440070030

Site Name: Near Road

Location: Providence (Downtown), RI

Reporting: True, Located: True

Current AQI: 17.0

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. 29, 2020, 8 a.m. 28.8 ppb (27) 15.1 ppb (14) N/A 14.0 ppb (13) N/A N/A N/A 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 29, 2020, 7 a.m. 20.4 ppb (19) 12.3 ppb (11) N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 29, 2020, 6 a.m. 18190.0 ppb (4545) 9.9 ppb (9) N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 3.9 μg/m3 (16) 16.0
 
Jan. 29, 2020, 5 a.m. 21690.0 ppb (5423) 11.8 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 29, 2020, 3 a.m. 22.1 ppb (20) 9.9 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.36 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 29, 2020, 2 a.m. 32.9 ppb (30) 19.3 ppb (18) N/A 14.0 ppb (13) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 29, 2020, 1 a.m. 35.7 ppb (33) 20.6 ppb (19) N/A 15.0 ppb (14) N/A N/A N/A 0.44 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 29, 2020, midnight 37.4 ppb (35) 21.3 ppb (20) N/A 16.0 ppb (15) N/A N/A N/A 0.52 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 28, 2020, 11 p.m. 54.3 ppb (50) 34.2 ppb (32) N/A 20.0 ppb (19) N/A N/A N/A 0.6 ppb (7) N/A 6.0 μg/m3 (25) 32.0
 
Jan. 28, 2020, 10 p.m. 59.7 ppb (56) 42.4 ppb (39) N/A 17.0 ppb (16) N/A N/A N/A 0.7 ppb (8) N/A 7.0 μg/m3 (29) 39.0
 
Jan. 28, 2020, 9 p.m. 60.3 ppb (57) 45.2 ppb (42) N/A 15.0 ppb (14) N/A N/A N/A 0.65 ppb (7) N/A 6.0 μg/m3 (25) 42.0
 
Jan. 28, 2020, 8 p.m. 57.1 ppb (53) 48.1 ppb (45) N/A 9.0 ppb (8) N/A N/A N/A 0.62 ppb (7) N/A 5.0 μg/m3 (21) 45.0
 
Jan. 28, 2020, 7 p.m. 74.3 ppb (72) 58.2 ppb (54) N/A 16.0 ppb (15) N/A N/A N/A 0.6 ppb (7) N/A 4.0 μg/m3 (17) 54.0
 
Jan. 28, 2020, 6 p.m. 86.9 ppb (85) 69.0 ppb (66) N/A 18.0 ppb (17) N/A N/A N/A 0.57 ppb (6) N/A 0.0 μg/m3 (0) 66.0
 
Jan. 28, 2020, 5 p.m. 65.3 ppb (62) 47.2 ppb (44) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) N/A 1.0 μg/m3 (4) 44.0
 
Jan. 28, 2020, 4 p.m. 68.4 ppb (65) 49.5 ppb (46) N/A 19.0 ppb (18) N/A N/A N/A 0.47 ppb (5) N/A 4.0 μg/m3 (17) 46.0
 
Jan. 28, 2020, 3 p.m. 57.1 ppb (53) 44.7 ppb (41) N/A 12.0 ppb (11) N/A N/A N/A 0.44 ppb (5) N/A 7.0 μg/m3 (29) 41.0
 
Jan. 28, 2020, 2 p.m. 80.0 ppb (78) 56.1 ppb (52) N/A 24.0 ppb (22) N/A N/A N/A 0.52 ppb (6) N/A 8.0 μg/m3 (33) 52.0
 
Jan. 28, 2020, 1 p.m. 82.3 ppb (80) 60.3 ppb (57) N/A 22.0 ppb (20) N/A N/A N/A 0.66 ppb (7) N/A 9.0 μg/m3 (38) 57.0
 
Jan. 28, 2020, noon 108.4 ppb (101) 79.2 ppb (77) N/A 29.0 ppb (27) N/A N/A N/A 0.73 ppb (8) N/A 8.0 μg/m3 (33) 77.0
 
Jan. 28, 2020, 11 a.m. 84.8 ppb (83) 64.6 ppb (61) N/A 20.0 ppb (19) N/A N/A N/A 0.67 ppb (7) N/A 7.0 μg/m3 (29) 61.0
 
Jan. 28, 2020, 10 a.m. 86.2 ppb (84) 65.2 ppb (62) N/A 21.0 ppb (19) N/A N/A N/A 0.59 ppb (7) N/A 3.0 μg/m3 (12) 62.0
 
Jan. 28, 2020, 9 a.m. 53.0 ppb (49) 37.0 ppb (34) N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A 3.0 μg/m3 (12) 34.0
 
Jan. 28, 2020, 8 a.m. 33.4 ppb (31) 22.9 ppb (21) N/A 11.0 ppb (10) N/A N/A N/A 0.27 ppb (3) N/A 2.0 μg/m3 (8) 21.0
 
Jan. 28, 2020, 7 a.m. 24120.0 ppb (6032) 16.8 ppb (16) N/A 7.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 1.0 μg/m3 (4) 16.0
 
Jan. 28, 2020, 6 a.m. 22400.0 ppb (5601) 10.2 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.29 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 28, 2020, 5 a.m. 22.4 ppb (21) 15.4 ppb (14) N/A 7.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 28, 2020, 3 a.m. 32.7 ppb (30) 22.3 ppb (21) N/A 10.0 ppb (9) N/A N/A N/A 0.47 ppb (5) N/A 3.0 μg/m3 (12) 21.0
 
Jan. 28, 2020, 2 a.m. 33.8 ppb (31) 24.3 ppb (23) N/A 9.0 ppb (8) N/A N/A N/A 0.48 ppb (5) N/A 2.0 μg/m3 (8) 23.0
 
Jan. 28, 2020, 1 a.m. 35.1 ppb (32) 23.1 ppb (21) N/A 12.0 ppb (11) N/A N/A N/A 0.48 ppb (5) N/A 2.0 μg/m3 (8) 21.0
 
Jan. 28, 2020, midnight 37.6 ppb (35) 26.8 ppb (25) N/A 11.0 ppb (10) N/A N/A N/A 0.57 ppb (6) N/A 3.0 μg/m3 (12) 25.0
 
Jan. 27, 2020, 11 p.m. 47.7 ppb (44) 31.8 ppb (29) N/A 16.0 ppb (15) N/A N/A N/A 0.65 ppb (7) N/A 5.0 μg/m3 (21) 29.0
 
Jan. 27, 2020, 10 p.m. 59.6 ppb (56) 42.3 ppb (39) N/A 17.0 ppb (16) N/A N/A N/A 0.8 ppb (9) N/A 6.0 μg/m3 (25) 39.0
 
Jan. 27, 2020, 9 p.m. 67.8 ppb (65) 47.8 ppb (44) N/A 20.0 ppb (19) N/A N/A N/A 0.71 ppb (8) N/A 8.0 μg/m3 (33) 44.0
 
Jan. 27, 2020, 8 p.m. 74.3 ppb (72) 58.1 ppb (54) N/A 16.0 ppb (15) N/A N/A N/A 0.72 ppb (8) N/A 7.0 μg/m3 (29) 54.0
 
Jan. 27, 2020, 7 p.m. 64.0 ppb (61) 51.8 ppb (48) N/A 12.0 ppb (11) N/A N/A N/A 0.61 ppb (7) N/A 5.0 μg/m3 (21) 48.0
 
Jan. 27, 2020, 6 p.m. 56.5 ppb (53) 44.1 ppb (41) N/A 12.0 ppb (11) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 41.0
 
Jan. 27, 2020, 5 p.m. 50.9 ppb (47) 38.4 ppb (36) N/A 13.0 ppb (12) N/A N/A N/A 0.48 ppb (5) N/A 8.0 μg/m3 (33) 36.0
 
Jan. 27, 2020, 4 p.m. 47.6 ppb (44) 32.0 ppb (30) N/A 16.0 ppb (15) N/A N/A N/A 0.46 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 27, 2020, 3 p.m. 66.6 ppb (63) 49.9 ppb (46) N/A 17.0 ppb (16) N/A N/A N/A 0.53 ppb (6) N/A 10.0 μg/m3 (42) 46.0
 
Jan. 27, 2020, 2 p.m. 76.7 ppb (74) 56.2 ppb (52) N/A 21.0 ppb (19) N/A N/A N/A 0.59 ppb (7) N/A 10.0 μg/m3 (42) 52.0
 
Jan. 27, 2020, 1 p.m. 74.9 ppb (72) 53.0 ppb (49) N/A 22.0 ppb (20) N/A N/A N/A 0.66 ppb (7) N/A 9.0 μg/m3 (38) 49.0
 
Jan. 27, 2020, noon 74.8 ppb (72) 55.0 ppb (51) N/A 20.0 ppb (19) N/A N/A N/A 0.67 ppb (7) N/A 9.0 μg/m3 (38) 51.0
 
Jan. 27, 2020, 11 a.m. 83.3 ppb (81) 57.7 ppb (54) N/A 26.0 ppb (24) N/A N/A N/A 0.69 ppb (8) N/A 8.0 μg/m3 (33) 54.0
 
Jan. 27, 2020, 10 a.m. 85.8 ppb (84) 62.3 ppb (59) N/A 24.0 ppb (22) N/A N/A N/A 0.59 ppb (7) N/A 7.0 μg/m3 (29) 59.0
 
Jan. 27, 2020, 9 a.m. 55.9 ppb (52) 38.7 ppb (36) N/A 17.0 ppb (16) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 36.0
 
Jan. 27, 2020, 8 a.m. 51.2 ppb (47) 32.9 ppb (30) N/A 18.0 ppb (17) N/A N/A N/A 0.39 ppb (4) N/A 6.0 μg/m3 (25) 30.0
 
Jan. 27, 2020, 7 a.m. 47.0 ppb (44) 31.5 ppb (29) N/A 15.0 ppb (14) N/A N/A N/A 0.36 ppb (4) N/A 6.0 μg/m3 (25) 29.0
 
Jan. 27, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 27, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 27, 2020, 4 a.m. 21240.0 ppb (5310) 9.6 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.31 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 27, 2020, 3 a.m. 28450.0 ppb (7117) 15.7 ppb (15) N/A 13.0 ppb (12) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 27, 2020, 2 a.m. 31.9 ppb (30) 18.1 ppb (17) N/A 14.0 ppb (13) N/A N/A N/A 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 27, 2020, 1 a.m. 51.0 ppb (47) 31.8 ppb (29) N/A 19.0 ppb (18) N/A N/A N/A 0.73 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 27, 2020, midnight 59.5 ppb (56) 34.6 ppb (32) N/A 25.0 ppb (23) N/A N/A N/A 0.83 ppb (9) N/A 6.0 μg/m3 (25) 32.0
 
Jan. 26, 2020, 11 p.m. 58.6 ppb (55) 39.3 ppb (36) N/A 19.0 ppb (18) N/A N/A N/A 0.89 ppb (10) N/A 4.0 μg/m3 (17) 36.0
 
Jan. 26, 2020, 10 p.m. 53.7 ppb (50) 38.6 ppb (36) N/A 15.0 ppb (14) N/A N/A N/A 0.79 ppb (9) N/A 2.0 μg/m3 (8) 36.0
 
Jan. 26, 2020, 9 p.m. 44.1 ppb (41) 30.0 ppb (28) N/A 14.0 ppb (13) N/A N/A N/A 0.68 ppb (8) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 26, 2020, 8 p.m. 35.6 ppb (33) 25.8 ppb (24) N/A 10.0 ppb (9) N/A N/A N/A 0.58 ppb (6) N/A 4.0 μg/m3 (17) 24.0
 
Jan. 26, 2020, 7 p.m. 34.6 ppb (32) 22.7 ppb (21) N/A 12.0 ppb (11) N/A N/A N/A 0.55 ppb (6) N/A 2.0 μg/m3 (8) 21.0
 
Jan. 26, 2020, 6 p.m. 29.4 ppb (27) 21.0 ppb (19) N/A 8.0 ppb (7) N/A N/A N/A 0.52 ppb (6) N/A 2.0 μg/m3 (8) 19.0
 
Jan. 26, 2020, 5 p.m. 27.4 ppb (25) 18.4 ppb (17) N/A 9.0 ppb (8) N/A N/A N/A 0.46 ppb (5) N/A 2.0 μg/m3 (8) 17.0
 
Jan. 26, 2020, 4 p.m. 25.9 ppb (24) 18.5 ppb (17) N/A 8.0 ppb (7) N/A N/A N/A 0.43 ppb (5) N/A 3.0 μg/m3 (12) 17.0
 
Jan. 26, 2020, 3 p.m. 27.0 ppb (25) 20.3 ppb (19) N/A 7.0 ppb (6) N/A N/A N/A 0.47 ppb (5) N/A 4.0 μg/m3 (17) 19.0
 
Jan. 26, 2020, 2 p.m. 22.2 ppb (21) 16.4 ppb (15) N/A 6.0 ppb (6) N/A N/A N/A 0.37 ppb (4) N/A 3.0 μg/m3 (12) 15.0
 
Jan. 26, 2020, 1 p.m. 23.6 ppb (22) 13.4 ppb (12) N/A 10.0 ppb (9) N/A N/A N/A 0.38 ppb (4) N/A 2.0 μg/m3 (8) 12.0
 
Jan. 26, 2020, noon 21.2 ppb (20) 11.8 ppb (11) N/A 9.0 ppb (8) N/A N/A N/A 0.36 ppb (4) N/A 0.0 μg/m3 (0) 11.0
 
Jan. 26, 2020, 11 a.m. 13.5 ppb (12) 7.1 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 26, 2020, 10 a.m. 14.4 ppb (13) 6.6 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.26 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 26, 2020, 9 a.m. 12.0 ppb (11) 5.9 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 26, 2020, 8 a.m. 11.7 ppb (11) 4.7 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 26, 2020, 7 a.m. 33320.0 ppb (8337) 14.2 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.74 ppb (8) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 26, 2020, 6 a.m. 27300.0 ppb (6829) 8.1 ppb (8) N/A 19.0 ppb (18) N/A N/A N/A 0.56 ppb (6) N/A 2.0 μg/m3 (8) 18.0
 
Jan. 26, 2020, 5 a.m. 18210.0 ppb (4550) 6.0 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 2.0 μg/m3 (8) 11.0
 
Jan. 26, 2020, 3 a.m. 20.2 ppb (19) 9.1 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A 0.48 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 26, 2020, 2 a.m. 18.3 ppb (17) 6.8 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 26, 2020, 1 a.m. 15.9 ppb (15) 5.8 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 26, 2020, midnight 28.4 ppb (26) 12.9 ppb (12) N/A 16.0 ppb (15) N/A N/A N/A 0.48 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 25, 2020, 11 p.m. 35.5 ppb (33) 20.3 ppb (19) N/A 15.0 ppb (14) N/A N/A N/A 0.57 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 25, 2020, 10 p.m. 35.5 ppb (33) 20.9 ppb (19) N/A 15.0 ppb (14) N/A N/A N/A 0.6 ppb (7) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 25, 2020, 9 p.m. 32.2 ppb (30) 16.9 ppb (16) N/A 15.0 ppb (14) N/A N/A N/A 0.51 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 25, 2020, 8 p.m. 26.6 ppb (25) 14.2 ppb (13) N/A 12.0 ppb (11) N/A N/A N/A 0.52 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 25, 2020, 7 p.m. 30.3 ppb (28) 13.3 ppb (12) N/A 17.0 ppb (16) N/A N/A N/A 0.44 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 25, 2020, 6 p.m. 21.4 ppb (20) 10.1 ppb (9) N/A 11.0 ppb (10) N/A N/A N/A 0.38 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 25, 2020, 5 p.m. 22.8 ppb (21) 12.9 ppb (12) N/A 10.0 ppb (9) N/A N/A N/A 0.36 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 25, 2020, 4 p.m. 18.5 ppb (17) 10.5 ppb (10) N/A 8.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 25, 2020, 3 p.m. 20.2 ppb (19) 10.1 ppb (9) N/A 10.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 25, 2020, 2 p.m. 18.9 ppb (18) 8.3 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A 0.28 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 25, 2020, 1 p.m. 26.7 ppb (25) 13.0 ppb (12) N/A 14.0 ppb (13) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 25, 2020, noon 13.7 ppb (13) 6.8 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 25, 2020, 11 a.m. 12.2 ppb (11) 3.3 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 25, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Jan. 25, 2020, 4 a.m. 19500.0 ppb (4874) 2.7 ppb (3) N/A 17.0 ppb (16) N/A N/A N/A 0.32 ppb (4) N/A 14.9 μg/m3 (56) 56.0
 
Jan. 25, 2020, 3 a.m. 27330.0 ppb (6836) 6.2 ppb (6) N/A 21.0 ppb (19) N/A N/A N/A 0.47 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 25, 2020, 2 a.m. 30980.0 ppb (7751) 5.2 ppb (5) N/A 26.0 ppb (24) N/A N/A N/A 0.54 ppb (6) N/A 18.9 μg/m3 (65) 65.0
 
Jan. 25, 2020, 1 a.m. 28040.0 ppb (7014) 3.9 ppb (4) N/A 24.0 ppb (22) N/A N/A N/A 0.48 ppb (5) N/A 16.9 μg/m3 (60) 60.0
 
Jan. 25, 2020, midnight 29120.0 ppb (7285) 5.6 ppb (5) N/A 24.0 ppb (22) N/A N/A N/A 0.5 ppb (6) N/A 11.9 μg/m3 (50) 50.0
 
Jan. 24, 2020, 11 p.m. 28140.0 ppb (7039) 5.7 ppb (5) N/A 22.0 ppb (20) N/A N/A N/A 0.44 ppb (5) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 24, 2020, 10 p.m. 31910.0 ppb (7984) 15.2 ppb (14) N/A 17.0 ppb (16) N/A N/A N/A 0.53 ppb (6) N/A 10.7 μg/m3 (45) 45.0
 
Jan. 24, 2020, 9 p.m. 24730.0 ppb (6184) 7.9 ppb (7) N/A 17.0 ppb (16) N/A N/A N/A 0.45 ppb (5) N/A N/A 16.0
 
Jan. 24, 2020, 8 p.m. 29.7 ppb (28) 12.8 ppb (12) N/A 17.0 ppb (16) N/A N/A N/A 0.45 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 24, 2020, 7 p.m. 47.5 ppb (44) 22.6 ppb (21) N/A 25.0 ppb (23) N/A N/A N/A 0.53 ppb (6) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 24, 2020, 6 p.m. 62.3 ppb (59) 35.0 ppb (32) N/A 27.0 ppb (25) N/A N/A N/A 0.65 ppb (7) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 24, 2020, 5 p.m. 70.5 ppb (68) 41.5 ppb (38) N/A 29.0 ppb (27) N/A N/A N/A 0.71 ppb (8) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 24, 2020, 4 p.m. 65.1 ppb (62) 40.1 ppb (37) N/A 25.0 ppb (23) N/A N/A N/A 0.6 ppb (7) N/A 24.0 μg/m3 (76) 76.0
 
Jan. 24, 2020, 3 p.m. 99.1 ppb (98) 66.5 ppb (63) N/A 33.0 ppb (31) N/A N/A N/A 0.8 ppb (9) N/A 19.0 μg/m3 (65) 65.0
 
Jan. 24, 2020, 2 p.m. 100.2 ppb (99) 66.2 ppb (63) N/A 34.0 ppb (31) N/A N/A N/A 0.76 ppb (8) N/A 25.0 μg/m3 (78) 78.0
 
Jan. 24, 2020, 1 p.m. 204.9 ppb (120) 163.0 ppb (112) N/A 42.0 ppb (39) N/A N/A N/A 1.6 ppb (18) N/A 31.0 μg/m3 (90) 112.0
 
Jan. 24, 2020, noon 269.2 ppb (132) 223.9 ppb (124) N/A 45.0 ppb (42) N/A N/A N/A 1.89 ppb (21) N/A 31.0 μg/m3 (90) 124.0
 
Jan. 24, 2020, 11 a.m. 280.8 ppb (135) 231.6 ppb (125) N/A 49.0 ppb (45) N/A N/A N/A 2.02 ppb (22) N/A 25.0 μg/m3 (78) 125.0
 
Jan. 24, 2020, 10 a.m. 241.9 ppb (127) 193.7 ppb (118) N/A 48.0 ppb (44) N/A N/A N/A 1.68 ppb (19) N/A 31.0 μg/m3 (90) 118.0
 
Jan. 24, 2020, 9 a.m. 266.1 ppb (132) 216.3 ppb (122) N/A 50.0 ppb (46) N/A N/A N/A 1.58 ppb (18) N/A 30.9 μg/m3 (90) 122.0
 
Jan. 24, 2020, 8 a.m. 197.5 ppb (119) 159.7 ppb (111) N/A 38.0 ppb (35) N/A N/A N/A 1.43 ppb (16) N/A 27.0 μg/m3 (82) 111.0
 
Jan. 24, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (82) 82.0
 
Jan. 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 32.9 μg/m3 (94) 94.0
 
Jan. 24, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 25.9 μg/m3 (80) 80.0
 
Jan. 24, 2020, 4 a.m. N/A 89.8 ppb (88) N/A 42.0 ppb (39) N/A N/A N/A 1.05 ppb (12) N/A 24.0 μg/m3 (76) 88.0
 
Jan. 24, 2020, 3 a.m. N/A 69.4 ppb (66) N/A 41.0 ppb (38) N/A N/A N/A 1.03 ppb (11) N/A 28.9 μg/m3 (86) 86.0
 
Jan. 24, 2020, 2 a.m. 119.4 ppb (104) 74.5 ppb (72) N/A 45.0 ppb (42) N/A N/A N/A 1.3 ppb (14) N/A 22.0 μg/m3 (71) 72.0
 
Jan. 24, 2020, 1 a.m. 121.4 ppb (104) 80.8 ppb (79) N/A 41.0 ppb (38) N/A N/A N/A 1.29 ppb (14) N/A 23.9 μg/m3 (75) 79.0
 
Jan. 24, 2020, midnight 111.5 ppb (102) 71.8 ppb (69) N/A 40.0 ppb (37) N/A N/A N/A 1.27 ppb (14) N/A 20.9 μg/m3 (69) 69.0
 
Jan. 23, 2020, 11 p.m. 144.0 ppb (108) 102.1 ppb (100) N/A 42.0 ppb (39) N/A N/A N/A 1.8 ppb (20) N/A 20.0 μg/m3 (67) 100.0
 
Jan. 23, 2020, 10 p.m. 142.7 ppb (108) 102.6 ppb (100) N/A 40.0 ppb (37) N/A N/A N/A 2.01 ppb (22) N/A 22.0 μg/m3 (71) 100.0
 
Jan. 23, 2020, 9 p.m. 149.7 ppb (109) 109.0 ppb (102) N/A 41.0 ppb (38) N/A N/A N/A 1.69 ppb (19) N/A 19.0 μg/m3 (65) 102.0
 
Jan. 23, 2020, 8 p.m. 107.8 ppb (101) 70.9 ppb (68) N/A 37.0 ppb (34) N/A N/A N/A 1.11 ppb (12) N/A 14.0 μg/m3 (54) 68.0
 
Jan. 23, 2020, 7 p.m. 94.1 ppb (93) 58.2 ppb (54) N/A 36.0 ppb (33) N/A N/A N/A 0.82 ppb (9) N/A 12.0 μg/m3 (50) 54.0
 
Jan. 23, 2020, 6 p.m. 78.9 ppb (76) 47.4 ppb (44) N/A 32.0 ppb (30) N/A N/A N/A 0.75 ppb (8) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 23, 2020, 5 p.m. 88.6 ppb (87) 55.8 ppb (52) N/A 33.0 ppb (31) N/A N/A N/A 0.9 ppb (10) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 23, 2020, 4 p.m. 90.9 ppb (89) 56.6 ppb (53) N/A 34.0 ppb (31) N/A N/A N/A 0.78 ppb (9) N/A 32.0 μg/m3 (93) 93.0
 
Jan. 23, 2020, 3 p.m. 110.7 ppb (102) 72.4 ppb (70) N/A 38.0 ppb (35) N/A N/A N/A 0.81 ppb (9) N/A 29.0 μg/m3 (86) 86.0
 
Jan. 23, 2020, 2 p.m. 118.7 ppb (103) 76.1 ppb (74) N/A 43.0 ppb (40) N/A N/A N/A 0.88 ppb (10) N/A 27.0 μg/m3 (82) 82.0
 
Jan. 23, 2020, 1 p.m. 165.4 ppb (112) 118.7 ppb (103) N/A 47.0 ppb (44) N/A N/A N/A 1.31 ppb (15) N/A 33.0 μg/m3 (95) 103.0
 
Jan. 23, 2020, noon 314.5 ppb (141) 266.7 ppb (132) N/A 48.0 ppb (44) N/A N/A N/A 2.17 ppb (24) N/A 28.0 μg/m3 (84) 132.0
 
Jan. 23, 2020, 11 a.m. 263.7 ppb (131) 220.8 ppb (123) N/A 43.0 ppb (40) N/A N/A N/A 1.66 ppb (18) N/A 26.0 μg/m3 (80) 123.0
 
Jan. 23, 2020, 10 a.m. 226.7 ppb (124) 183.3 ppb (116) N/A 43.0 ppb (40) N/A N/A N/A 1.45 ppb (16) N/A 24.0 μg/m3 (76) 116.0
 
Jan. 23, 2020, 9 a.m. 192.3 ppb (118) 154.0 ppb (110) N/A 38.0 ppb (35) N/A N/A N/A 1.14 ppb (13) N/A 22.0 μg/m3 (71) 110.0
 
Jan. 23, 2020, 8 a.m. 156.0 ppb (111) 115.3 ppb (103) N/A 41.0 ppb (38) N/A N/A N/A 1.05 ppb (12) N/A 27.0 μg/m3 (82) 103.0
 
Jan. 23, 2020, 7 a.m. 210.6 ppb (121) 163.1 ppb (112) N/A 47.0 ppb (44) N/A N/A N/A 1.43 ppb (16) N/A 25.0 μg/m3 (78) 112.0
 
Jan. 23, 2020, 6 a.m. 219.9 ppb (123) 172.3 ppb (114) N/A 48.0 ppb (44) N/A N/A N/A 1.65 ppb (18) N/A 24.0 μg/m3 (76) 114.0
 
Jan. 23, 2020, 5 a.m. 159.2 ppb (111) 114.9 ppb (103) N/A 44.0 ppb (41) N/A N/A N/A 1.4 ppb (16) N/A 23.0 μg/m3 (73) 103.0
 
Jan. 23, 2020, 4 a.m. N/A 76.1 ppb (74) N/A 42.0 ppb (39) N/A N/A N/A 0.94 ppb (10) N/A 23.0 μg/m3 (73) 74.0
 
Jan. 23, 2020, 3 a.m. 124.6 ppb (105) 81.5 ppb (79) N/A 43.0 ppb (40) N/A N/A N/A 1.21 ppb (13) N/A 25.9 μg/m3 (80) 80.0
 
Jan. 23, 2020, 2 a.m. 114.4 ppb (103) 71.0 ppb (68) N/A 43.0 ppb (40) N/A N/A N/A 1.18 ppb (13) N/A 18.0 μg/m3 (63) 68.0
 
Jan. 23, 2020, 1 a.m. 143.1 ppb (108) 98.3 ppb (97) N/A 45.0 ppb (42) N/A N/A N/A 1.48 ppb (16) N/A 18.9 μg/m3 (65) 97.0
 
Jan. 23, 2020, midnight 136.5 ppb (107) 90.2 ppb (89) N/A 46.0 ppb (43) N/A N/A N/A 1.36 ppb (15) N/A 15.0 μg/m3 (56) 89.0
 
Jan. 22, 2020, 11 p.m. 86570.0 ppb (21683) 46.1 ppb (43) N/A 41.0 ppb (38) N/A N/A N/A 1.13 ppb (13) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 22, 2020, 10 p.m. 107.6 ppb (101) 66.2 ppb (63) N/A 41.0 ppb (38) N/A N/A N/A 1.58 ppb (18) N/A 16.9 μg/m3 (60) 63.0
 
Jan. 22, 2020, 9 p.m. 84100.0 ppb (21064) 46.7 ppb (43) N/A 37.0 ppb (34) N/A N/A N/A 0.97 ppb (11) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 22, 2020, 8 p.m. 72480.0 ppb (18152) 47.7 ppb (44) N/A 25.0 ppb (23) N/A N/A N/A 0.74 ppb (8) N/A 12.9 μg/m3 (52) 52.0
 
Jan. 22, 2020, 7 p.m. 96.4 ppb (95) 67.9 ppb (65) N/A 28.0 ppb (26) N/A N/A N/A 0.75 ppb (8) N/A 10.0 μg/m3 (42) 65.0
 
Jan. 22, 2020, 6 p.m. 92.1 ppb (91) 67.8 ppb (65) N/A 24.0 ppb (22) N/A N/A N/A 0.67 ppb (7) N/A 9.0 μg/m3 (38) 65.0
 
Jan. 22, 2020, 5 p.m. 69.1 ppb (66) 50.1 ppb (46) N/A 19.0 ppb (18) N/A N/A N/A 0.51 ppb (6) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 22, 2020, 4 p.m. 93.5 ppb (92) 63.8 ppb (60) N/A 30.0 ppb (28) N/A N/A N/A 0.57 ppb (6) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 22, 2020, 3 p.m. 103.7 ppb (101) 74.6 ppb (72) N/A 29.0 ppb (27) N/A N/A N/A 0.62 ppb (7) N/A 20.0 μg/m3 (67) 72.0
 
Jan. 22, 2020, 2 p.m. 131.5 ppb (106) 96.2 ppb (95) N/A 35.0 ppb (32) N/A N/A N/A 0.85 ppb (9) N/A 20.0 μg/m3 (67) 95.0
 
Jan. 22, 2020, 1 p.m. 173.8 ppb (114) 122.9 ppb (104) N/A 51.0 ppb (47) N/A N/A N/A 1.11 ppb (12) N/A 24.0 μg/m3 (76) 104.0
 
Jan. 22, 2020, noon 180.5 ppb (115) 129.0 ppb (105) N/A 52.0 ppb (48) N/A N/A N/A 1.15 ppb (13) N/A 17.0 μg/m3 (61) 105.0
 
Jan. 22, 2020, 11 a.m. 151.9 ppb (110) 104.4 ppb (101) N/A 47.0 ppb (44) N/A N/A N/A 0.89 ppb (10) N/A 14.0 μg/m3 (54) 101.0
 
Jan. 22, 2020, 10 a.m. 153.1 ppb (110) 104.7 ppb (101) N/A 48.0 ppb (44) N/A N/A N/A 0.74 ppb (8) N/A 16.0 μg/m3 (59) 101.0
 
Jan. 22, 2020, 9 a.m. 115.9 ppb (103) 72.5 ppb (70) N/A 43.0 ppb (40) N/A N/A N/A 0.59 ppb (7) N/A 14.0 μg/m3 (54) 70.0
 
Jan. 22, 2020, 8 a.m. 91.8 ppb (90) 49.8 ppb (46) N/A 42.0 ppb (39) N/A N/A N/A 0.5 ppb (6) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 22, 2020, 7 a.m. 75410.0 ppb (18886) 40.4 ppb (37) N/A 35.0 ppb (32) N/A N/A N/A 0.48 ppb (5) N/A 19.9 μg/m3 (67) 67.0
 
Jan. 22, 2020, 6 a.m. 88980.0 ppb (22287) 48.1 ppb (45) N/A 41.0 ppb (38) N/A N/A N/A 0.65 ppb (7) N/A 15.0 μg/m3 (56) 56.0