AQSQID: 440070030

Site Name: Near Road

Location: Providence, RI

Reporting: True, Located: True

Current AQI: 25.0

Providence RI, US: 41.829495, -71.417457

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 24, 2019, 10 a.m. 21570.0 ppb (5392) 11.3 ppb (10) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 24, 2019, 9 a.m. 13110.0 ppb (3272) 5.7 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 24, 2019, 8 a.m. 11.9 ppb (11) 5.7 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 24, 2019, 7 a.m. 11.2 ppb (10) 4.2 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 24, 2019, 6 a.m. 10.2 ppb (9) 4.3 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 24, 2019, 5 a.m. 12800.0 ppb (3194) 4.6 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 24, 2019, 3 a.m. 20040.0 ppb (5009) 7.7 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A 0.38 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 24, 2019, 2 a.m. 36550.0 ppb (9147) 12.8 ppb (12) N/A 24.0 ppb (22) N/A N/A N/A 0.6 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 24, 2019, 1 a.m. 43250.0 ppb (10826) 15.5 ppb (14) N/A 28.0 ppb (26) N/A N/A N/A 0.54 ppb (6) N/A 12.9 μg/m3 (52) 52.0
 
Jan. 24, 2019, midnight 38.4 ppb (36) 15.4 ppb (14) N/A 23.0 ppb (21) N/A N/A N/A 0.54 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 23, 2019, 11 p.m. 59.9 ppb (56) 32.3 ppb (30) N/A 28.0 ppb (26) N/A N/A N/A 0.93 ppb (10) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 23, 2019, 10 p.m. 66.9 ppb (64) 31.9 ppb (30) N/A 35.0 ppb (32) N/A N/A N/A 1.0 ppb (11) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 23, 2019, 9 p.m. 58.6 ppb (55) 28.6 ppb (26) N/A 30.0 ppb (28) N/A N/A N/A 0.71 ppb (8) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 23, 2019, 8 p.m. 62400.0 ppb (15626) 32.7 ppb (30) N/A 30.0 ppb (28) N/A N/A N/A 0.71 ppb (8) N/A 10.9 μg/m3 (45) 45.0
 
Jan. 23, 2019, 7 p.m. 65920.0 ppb (16508) 39.6 ppb (37) N/A 26.0 ppb (24) N/A N/A N/A 0.63 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 23, 2019, 6 p.m. 68.1 ppb (65) 34.2 ppb (32) N/A 34.0 ppb (31) N/A N/A N/A 0.6 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 23, 2019, 5 p.m. 69.4 ppb (66) 37.5 ppb (35) N/A 32.0 ppb (30) N/A N/A N/A 0.59 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2019, 4 p.m. 76690.0 ppb (19207) 45.7 ppb (42) N/A 31.0 ppb (29) N/A N/A N/A 0.73 ppb (8) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 23, 2019, 3 p.m. 141.4 ppb (108) 99.2 ppb (98) N/A 42.0 ppb (39) N/A N/A N/A 0.99 ppb (11) N/A 17.9 μg/m3 (63) 98.0
 
Jan. 23, 2019, 2 p.m. 141.5 ppb (108) 100.5 ppb (99) N/A 41.0 ppb (38) N/A N/A N/A 1.08 ppb (12) N/A 17.0 μg/m3 (61) 99.0
 
Jan. 23, 2019, 1 p.m. 203.9 ppb (120) 157.1 ppb (111) N/A 47.0 ppb (44) N/A N/A N/A 1.83 ppb (20) N/A 17.9 μg/m3 (63) 111.0
 
Jan. 23, 2019, noon 182.7 ppb (116) 135.4 ppb (107) N/A 47.0 ppb (44) N/A N/A N/A 1.39 ppb (15) N/A 12.0 μg/m3 (50) 107.0
 
Jan. 23, 2019, 11 a.m. 162.8 ppb (112) 114.5 ppb (103) N/A 48.0 ppb (44) N/A N/A N/A 1.06 ppb (12) N/A 20.0 μg/m3 (67) 103.0
 
Jan. 23, 2019, 10 a.m. 171.9 ppb (114) 119.4 ppb (104) N/A 52.0 ppb (48) N/A N/A N/A 0.91 ppb (10) N/A 15.9 μg/m3 (58) 104.0
 
Jan. 23, 2019, 9 a.m. 127.5 ppb (105) 85.3 ppb (83) N/A 42.0 ppb (39) N/A N/A N/A 0.66 ppb (7) N/A 15.0 μg/m3 (56) 83.0
 
Jan. 23, 2019, 8 a.m. 99.2 ppb (98) 52.9 ppb (49) N/A 46.0 ppb (43) N/A N/A N/A 0.5 ppb (6) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 23, 2019, 7 a.m. 116.0 ppb (103) 67.9 ppb (65) N/A 48.0 ppb (44) N/A N/A N/A 0.59 ppb (7) N/A 10.0 μg/m3 (42) 65.0
 
Jan. 23, 2019, 6 a.m. 68.7 ppb (66) 29.5 ppb (27) N/A 39.0 ppb (36) N/A N/A N/A 0.49 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2019, 5 a.m. 67.5 ppb (64) 30.4 ppb (28) N/A 37.0 ppb (34) N/A N/A N/A 0.5 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 23, 2019, 3 a.m. 72.9 ppb (70) 39.3 ppb (36) N/A 34.0 ppb (31) N/A N/A N/A 0.66 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2019, 2 a.m. 88850.0 ppb (22255) 54.6 ppb (51) N/A 34.0 ppb (31) N/A N/A N/A 0.78 ppb (9) N/A 11.0 μg/m3 (46) 51.0
 
Jan. 23, 2019, 1 a.m. 73530.0 ppb (18415) 40.4 ppb (37) N/A 33.0 ppb (31) N/A N/A N/A 0.72 ppb (8) N/A 14.9 μg/m3 (56) 56.0
 
Jan. 23, 2019, midnight 91.7 ppb (90) 48.8 ppb (45) N/A 43.0 ppb (40) N/A N/A N/A 0.84 ppb (9) N/A 9.0 μg/m3 (38) 45.0
 
Jan. 22, 2019, 11 p.m. 71.7 ppb (69) 38.6 ppb (36) N/A 33.0 ppb (31) N/A N/A N/A 0.73 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2019, 10 p.m. 80490.0 ppb (20159) 43.2 ppb (40) N/A 37.0 ppb (34) N/A N/A N/A 0.77 ppb (9) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 22, 2019, 9 p.m. 100.9 ppb (100) 65.4 ppb (62) N/A 36.0 ppb (33) N/A N/A N/A 0.95 ppb (11) N/A 22.6 μg/m3 (73) 73.0
 
Jan. 22, 2019, 8 p.m. 88250.0 ppb (22104) 59.9 ppb (56) N/A 28.0 ppb (26) N/A N/A N/A 0.68 ppb (8) N/A N/A 56.0
 
Jan. 22, 2019, 7 p.m. 89550.0 ppb (22430) 66.7 ppb (64) N/A 23.0 ppb (21) N/A N/A N/A 0.68 ppb (8) N/A 15.0 μg/m3 (56) 64.0
 
Jan. 22, 2019, 6 p.m. 78240.0 ppb (19595) 56.8 ppb (53) N/A 21.0 ppb (19) N/A N/A N/A 0.6 ppb (7) N/A 16.9 μg/m3 (60) 60.0
 
Jan. 22, 2019, 5 p.m. 79960.0 ppb (20027) 55.6 ppb (52) N/A 24.0 ppb (22) N/A N/A N/A 0.54 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 22, 2019, 4 p.m. 70.7 ppb (68) 50.1 ppb (46) N/A 21.0 ppb (19) N/A N/A N/A 0.51 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 22, 2019, 3 p.m. 82.2 ppb (80) 55.7 ppb (52) N/A 27.0 ppb (25) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 52.0
 
Jan. 22, 2019, 2 p.m. 84.4 ppb (82) 69.5 ppb (66) N/A 15.0 ppb (14) N/A N/A N/A 0.56 ppb (6) N/A 6.0 μg/m3 (25) 66.0
 
Jan. 22, 2019, 1 p.m. 79.5 ppb (77) 57.8 ppb (54) N/A 22.0 ppb (20) N/A N/A N/A 0.6 ppb (7) N/A 8.0 μg/m3 (33) 54.0
 
Jan. 22, 2019, noon 95.8 ppb (94) 71.6 ppb (69) N/A 24.0 ppb (22) N/A N/A N/A 0.74 ppb (8) N/A 7.0 μg/m3 (29) 69.0
 
Jan. 22, 2019, 11 a.m. 82.1 ppb (80) 55.4 ppb (51) N/A 27.0 ppb (25) N/A N/A N/A 0.54 ppb (6) N/A 6.0 μg/m3 (25) 51.0
 
Jan. 22, 2019, 10 a.m. 62190.0 ppb (15573) 48.2 ppb (45) N/A 14.0 ppb (13) N/A N/A N/A 0.44 ppb (5) N/A 5.9 μg/m3 (25) 45.0
 
Jan. 22, 2019, 9 a.m. 54420.0 ppb (13626) 34.5 ppb (32) N/A 20.0 ppb (19) N/A N/A N/A 0.34 ppb (4) N/A 4.9 μg/m3 (20) 32.0
 
Jan. 22, 2019, 8 a.m. 21690.0 ppb (5423) 12.3 ppb (11) N/A 9.0 ppb (8) N/A N/A N/A 0.18 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
Jan. 22, 2019, 7 a.m. 14750.0 ppb (3683) 9.0 ppb (8) N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 22, 2019, 6 a.m. 17.4 ppb (16) 8.4 ppb (8) N/A 9.0 ppb (8) N/A N/A N/A 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2019, 5 a.m. 19210.0 ppb (4801) 10.4 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A 0.23 ppb (3) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 22, 2019, 4 a.m. 25500.0 ppb (6377) 13.9 ppb (13) N/A 12.0 ppb (11) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2019, 3 a.m. 22340.0 ppb (5585) 14.1 ppb (13) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2019, 2 a.m. 31.3 ppb (29) 20.6 ppb (19) N/A 11.0 ppb (10) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2019, 1 a.m. 23.5 ppb (22) 15.4 ppb (14) N/A 8.0 ppb (7) N/A N/A N/A 0.33 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 22, 2019, midnight 40.3 ppb (37) 23.8 ppb (22) N/A 17.0 ppb (16) N/A N/A N/A 0.42 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 11 p.m. 46310.0 ppb (11593) 27.7 ppb (26) N/A 19.0 ppb (18) N/A N/A N/A 0.44 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 10 p.m. 57840.0 ppb (14483) 40.5 ppb (38) N/A 17.0 ppb (16) N/A N/A N/A 0.57 ppb (6) N/A 8.9 μg/m3 (37) 38.0
 
Jan. 21, 2019, 9 p.m. 53640.0 ppb (13430) 38.2 ppb (35) N/A 15.0 ppb (14) N/A N/A N/A 0.53 ppb (6) N/A 8.0 μg/m3 (33) 35.0
 
Jan. 21, 2019, 8 p.m. 43.8 ppb (41) 38.0 ppb (35) N/A 6.0 ppb (6) N/A N/A N/A 0.48 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2019, 7 p.m. 43.2 ppb (40) 34.4 ppb (32) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 21, 2019, 6 p.m. 51.0 ppb (47) 35.1 ppb (32) N/A 16.0 ppb (15) N/A N/A N/A 0.42 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 21, 2019, 5 p.m. 37.4 ppb (35) 26.6 ppb (25) N/A 11.0 ppb (10) N/A N/A N/A 0.33 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 21, 2019, 4 p.m. 47330.0 ppb (11849) 37.8 ppb (35) N/A 10.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 14.9 μg/m3 (56) 56.0
 
Jan. 21, 2019, 3 p.m. 45380.0 ppb (11360) 31.4 ppb (29) N/A 14.0 ppb (13) N/A N/A N/A 0.3 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2019, 2 p.m. 48.4 ppb (45) 33.7 ppb (31) N/A 15.0 ppb (14) N/A N/A N/A 0.33 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2019, 1 p.m. 47.6 ppb (44) 31.9 ppb (30) N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2019, noon 56160.0 ppb (14062) 42.5 ppb (39) N/A 14.0 ppb (13) N/A N/A N/A 0.37 ppb (4) N/A 10.9 μg/m3 (45) 45.0
 
Jan. 21, 2019, 11 a.m. 45290.0 ppb (11337) 35.9 ppb (33) N/A 9.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 21, 2019, 10 a.m. 36880.0 ppb (9230) 27.9 ppb (26) N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) N/A 2.9 μg/m3 (12) 26.0
 
Jan. 21, 2019, 9 a.m. 16890.0 ppb (4220) 11.7 ppb (11) N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) N/A 2.0 μg/m3 (8) 11.0
 
Jan. 21, 2019, 8 a.m. 11430.0 ppb (2851) 6.9 ppb (6) N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2019, 7 a.m. 8620.0 ppb (2147) 5.7 ppb (5) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2019, 4 a.m. 16720.0 ppb (4177) 7.8 ppb (7) N/A 9.0 ppb (8) N/A N/A N/A 0.21 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2019, 3 a.m. 13670.0 ppb (3413) 8.0 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2019, 2 a.m. 17440.0 ppb (4357) 12.2 ppb (11) N/A 5.0 ppb (5) N/A N/A N/A 0.27 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 21, 2019, 1 a.m. 12940.0 ppb (3230) 9.1 ppb (8) N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2019, midnight 14.4 ppb (13) 8.7 ppb (8) N/A 6.0 ppb (6) N/A N/A N/A 0.29 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2019, 11 p.m. 28.6 ppb (26) 20.7 ppb (19) N/A 8.0 ppb (7) N/A N/A N/A 0.33 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2019, 10 p.m. 36.8 ppb (34) 23.4 ppb (22) N/A 13.0 ppb (12) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, 9 p.m. 42.5 ppb (39) 27.7 ppb (26) N/A 15.0 ppb (14) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 26.0
 
Jan. 20, 2019, 8 p.m. 28590.0 ppb (7152) 15.6 ppb (14) N/A 13.0 ppb (12) N/A N/A N/A 0.35 ppb (4) N/A 5.9 μg/m3 (25) 25.0
 
Jan. 20, 2019, 7 p.m. 38210.0 ppb (9563) 20.8 ppb (19) N/A 17.0 ppb (16) N/A N/A N/A 0.61 ppb (7) N/A 3.0 μg/m3 (12) 19.0
 
Jan. 20, 2019, 6 p.m. 70020.0 ppb (17535) 40.7 ppb (38) N/A 29.0 ppb (27) N/A N/A N/A 0.81 ppb (9) N/A 4.0 μg/m3 (17) 38.0
 
Jan. 20, 2019, 5 p.m. 44500.0 ppb (11139) 22.8 ppb (21) N/A 22.0 ppb (20) N/A N/A N/A 0.64 ppb (7) N/A 3.9 μg/m3 (16) 21.0
 
Jan. 20, 2019, 4 p.m. 42120.0 ppb (10543) 22.2 ppb (21) N/A 20.0 ppb (19) N/A N/A N/A 0.52 ppb (6) N/A 1.0 μg/m3 (4) 21.0
 
Jan. 20, 2019, 3 p.m. 36300.0 ppb (9084) 18.6 ppb (17) N/A 18.0 ppb (17) N/A N/A N/A 0.44 ppb (5) N/A 2.0 μg/m3 (8) 17.0
 
Jan. 20, 2019, 2 p.m. 29.0 ppb (27) 13.3 ppb (12) N/A 16.0 ppb (15) N/A N/A N/A 0.35 ppb (4) N/A 3.0 μg/m3 (12) 15.0
 
Jan. 20, 2019, 1 p.m. 33.7 ppb (31) 14.0 ppb (13) N/A 20.0 ppb (19) N/A N/A N/A 0.36 ppb (4) N/A 3.0 μg/m3 (12) 19.0
 
Jan. 20, 2019, noon 19670.0 ppb (4916) 6.6 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A 0.29 ppb (3) N/A 0.9 μg/m3 (4) 12.0
 
Jan. 20, 2019, 11 a.m. 18610.0 ppb (4651) 6.6 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A 0.27 ppb (3) N/A -0.9 μg/m3 (0) 11.0
 
Jan. 20, 2019, 10 a.m. 10240.0 ppb (2553) 2.6 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 0.0 μg/m3 (0) 7.0
 
Jan. 20, 2019, 9 a.m. 11.7 ppb (11) 6.0 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A -1.0 μg/m3 (0) 6.0
 
Jan. 20, 2019, 8 a.m. 14290.0 ppb (3568) 8.7 ppb (8) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 0.0 μg/m3 (0) 8.0
 
Jan. 20, 2019, 7 a.m. 19970.0 ppb (4991) 12.0 ppb (11) N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
Jan. 20, 2019, 6 a.m. 16270.0 ppb (4064) 8.7 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 20, 2019, 5 a.m. 18200.0 ppb (4548) 12.9 ppb (12) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (8) 12.0
 
Jan. 20, 2019, 3 a.m. 15350.0 ppb (3834) 7.5 ppb (7) N/A 8.0 ppb (7) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 20, 2019, 2 a.m. 14750.0 ppb (3683) 7.6 ppb (7) N/A 7.0 ppb (6) N/A N/A N/A 0.29 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 1 a.m. 11520.0 ppb (2874) 5.4 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2019, midnight 20.2 ppb (19) 9.5 ppb (9) N/A 11.0 ppb (10) N/A N/A N/A 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2019, 11 p.m. 26.8 ppb (25) 9.4 ppb (9) N/A 17.0 ppb (16) N/A N/A N/A 0.4 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2019, 10 p.m. 39900.0 ppb (9986) 20.3 ppb (19) N/A 20.0 ppb (19) N/A N/A N/A 0.53 ppb (6) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 19, 2019, 9 p.m. 32340.0 ppb (8092) 17.6 ppb (16) 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. 19, 2019, 8 p.m. 18300.0 ppb (4573) 8.4 ppb (8) N/A 10.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 7 p.m. 20.3 ppb (19) 10.9 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A 0.31 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 6 p.m. 21090.0 ppb (5272) 9.0 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.32 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 5 p.m. 15990.0 ppb (3994) 8.6 ppb (8) N/A 7.0 ppb (6) N/A N/A N/A 0.31 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 4 p.m. 29040.0 ppb (7265) 16.1 ppb (15) N/A 13.0 ppb (12) N/A N/A N/A 0.36 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 3 p.m. 35410.0 ppb (8861) 20.2 ppb (19) N/A 15.0 ppb (14) N/A N/A N/A 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2019, 2 p.m. 34080.0 ppb (8528) 18.4 ppb (17) N/A 16.0 ppb (15) N/A N/A N/A 0.4 ppb (4) N/A 16.9 μg/m3 (60) 60.0
 
Jan. 19, 2019, 1 p.m. 74.6 ppb (72) 47.0 ppb (44) N/A 28.0 ppb (26) N/A N/A N/A 0.68 ppb (8) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2019, noon 172.5 ppb (114) 136.4 ppb (107) N/A 36.0 ppb (33) N/A N/A N/A 1.32 ppb (15) N/A 13.0 μg/m3 (52) 107.0
 
Jan. 19, 2019, 11 a.m. 158.4 ppb (111) 119.2 ppb (104) N/A 39.0 ppb (36) N/A N/A N/A 1.08 ppb (12) N/A 12.9 μg/m3 (52) 104.0
 
Jan. 19, 2019, 10 a.m. 125.8 ppb (105) 89.7 ppb (88) N/A 36.0 ppb (33) N/A N/A N/A 0.82 ppb (9) N/A 10.9 μg/m3 (45) 88.0
 
Jan. 19, 2019, 9 a.m. 72.9 ppb (70) 38.3 ppb (35) N/A 35.0 ppb (32) N/A N/A N/A 0.66 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 8 a.m. 50360.0 ppb (12608) 26.6 ppb (25) N/A 24.0 ppb (22) N/A N/A N/A 0.57 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2019, 7 a.m. 64200.0 ppb (16077) 35.1 ppb (32) N/A 29.0 ppb (27) N/A N/A N/A 0.71 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2019, 6 a.m. 49840.0 ppb (12478) 26.6 ppb (25) N/A 23.0 ppb (21) N/A N/A N/A 0.65 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2019, 5 a.m. 50350.0 ppb (12606) 29.2 ppb (27) N/A 21.0 ppb (19) N/A N/A N/A 0.67 ppb (7) N/A 11.9 μg/m3 (50) 50.0
 
Jan. 19, 2019, 4 a.m. 68060.0 ppb (17044) 44.0 ppb (41) N/A 24.0 ppb (22) N/A N/A N/A 0.71 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2019, 3 a.m. 77150.0 ppb (19322) 48.9 ppb (45) N/A 28.0 ppb (26) N/A N/A N/A 0.92 ppb (10) N/A 15.9 μg/m3 (58) 58.0
 
Jan. 19, 2019, 2 a.m. 68150.0 ppb (17067) 41.0 ppb (38) N/A 27.0 ppb (25) N/A N/A N/A 0.94 ppb (10) N/A 13.9 μg/m3 (54) 54.0
 
Jan. 19, 2019, 1 a.m. 69680.0 ppb (17450) 42.7 ppb (40) N/A 27.0 ppb (25) N/A N/A N/A 0.87 ppb (10) N/A 9.0 μg/m3 (38) 40.0
 
Jan. 19, 2019, midnight 73860.0 ppb (18498) 43.3 ppb (40) N/A 31.0 ppb (29) N/A N/A N/A 0.86 ppb (10) N/A 12.9 μg/m3 (52) 52.0
 
Jan. 18, 2019, 11 p.m. 66560.0 ppb (16668) 38.8 ppb (36) N/A 28.0 ppb (26) N/A N/A N/A 0.81 ppb (9) N/A 9.9 μg/m3 (41) 41.0
 
Jan. 18, 2019, 10 p.m. 80760.0 ppb (20227) 48.6 ppb (45) N/A 32.0 ppb (30) N/A N/A N/A 0.91 ppb (10) N/A 7.9 μg/m3 (33) 45.0
 
Jan. 18, 2019, 9 p.m. 111.1 ppb (102) 73.5 ppb (71) N/A 38.0 ppb (35) N/A N/A N/A 1.27 ppb (14) N/A 6.0 μg/m3 (25) 71.0
 
Jan. 18, 2019, 8 p.m. 62.6 ppb (59) 36.8 ppb (34) N/A 26.0 ppb (24) N/A N/A N/A 0.66 ppb (7) N/A 8.0 μg/m3 (33) 34.0
 
Jan. 18, 2019, 7 p.m. 34640.0 ppb (8668) 17.2 ppb (16) N/A 17.0 ppb (16) N/A N/A N/A 0.41 ppb (5) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 18, 2019, 6 p.m. 50410.0 ppb (12621) 29.1 ppb (27) N/A 21.0 ppb (19) N/A N/A N/A 0.52 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 5 p.m. 86740.0 ppb (21726) 49.3 ppb (46) N/A 37.0 ppb (34) N/A N/A N/A 0.73 ppb (8) N/A 9.0 μg/m3 (38) 46.0
 
Jan. 18, 2019, 4 p.m. 78230.0 ppb (19593) 47.4 ppb (44) N/A 31.0 ppb (29) N/A N/A N/A 0.65 ppb (7) N/A 10.0 μg/m3 (42) 44.0
 
Jan. 18, 2019, 3 p.m. 100.0 ppb (99) 62.2 ppb (59) N/A 38.0 ppb (35) N/A N/A N/A 0.73 ppb (8) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 18, 2019, 2 p.m. 89.1 ppb (87) 52.3 ppb (48) N/A 37.0 ppb (34) N/A N/A N/A 0.69 ppb (8) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 18, 2019, 1 p.m. 126.7 ppb (105) 82.9 ppb (81) N/A 44.0 ppb (41) N/A N/A N/A 0.93 ppb (10) N/A 10.0 μg/m3 (42) 81.0
 
Jan. 18, 2019, noon 137.9 ppb (107) 91.5 ppb (90) N/A 46.0 ppb (43) N/A N/A N/A 1.03 ppb (11) N/A 10.0 μg/m3 (42) 90.0
 
Jan. 18, 2019, 11 a.m. 80690.0 ppb (20210) 45.7 ppb (42) N/A 35.0 ppb (32) N/A N/A N/A 0.57 ppb (6) N/A 12.9 μg/m3 (52) 52.0
 
Jan. 18, 2019, 10 a.m. 94.6 ppb (93) 58.1 ppb (54) N/A 37.0 ppb (34) N/A N/A N/A 0.64 ppb (7) N/A 6.0 μg/m3 (25) 54.0
 
Jan. 18, 2019, 9 a.m. 68410.0 ppb (17132) 33.5 ppb (31) N/A 35.0 ppb (32) N/A N/A N/A 0.44 ppb (5) N/A 5.9 μg/m3 (25) 32.0
 
Jan. 18, 2019, 8 a.m. 49470.0 ppb (12385) 21.8 ppb (20) N/A 28.0 ppb (26) N/A N/A N/A 0.29 ppb (3) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 18, 2019, 7 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. 18, 2019, 6 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. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 18, 2019, 4 a.m. 22690.0 ppb (5673) 6.4 ppb (6) N/A 16.0 ppb (15) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2019, 3 a.m. 31480.0 ppb (7876) 9.2 ppb (9) N/A 22.0 ppb (20) N/A N/A N/A 0.36 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2019, 2 a.m. 30530.0 ppb (7638) 10.0 ppb (9) N/A 21.0 ppb (19) N/A N/A N/A 0.38 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2019, 1 a.m. 33420.0 ppb (8362) 14.3 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.39 ppb (4) N/A 10.9 μg/m3 (45) 45.0
 
Jan. 18, 2019, midnight 36620.0 ppb (9164) 13.1 ppb (12) N/A 24.0 ppb (22) N/A N/A N/A 0.43 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2019, 11 p.m. 45440.0 ppb (11375) 18.3 ppb (17) N/A 27.0 ppb (25) N/A N/A N/A 0.5 ppb (6) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 17, 2019, 10 p.m. 48.9 ppb (45) 22.8 ppb (21) N/A 26.0 ppb (24) N/A N/A N/A 0.56 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2019, 9 p.m. 63.8 ppb (60) 35.4 ppb (33) N/A 28.0 ppb (26) N/A N/A N/A 0.65 ppb (7) N/A 5.0 μg/m3 (21) 33.0
 
Jan. 17, 2019, 8 p.m. 55.4 ppb (51) 32.8 ppb (30) N/A 23.0 ppb (21) N/A N/A N/A 0.58 ppb (6) N/A 4.0 μg/m3 (17) 30.0
 
Jan. 17, 2019, 7 p.m. 48470.0 ppb (12134) 28.4 ppb (26) N/A 20.0 ppb (19) N/A N/A N/A 0.41 ppb (5) N/A 4.0 μg/m3 (17) 26.0
 
Jan. 17, 2019, 6 p.m. 56810.0 ppb (14225) 42.1 ppb (39) N/A 15.0 ppb (14) N/A N/A N/A 0.46 ppb (5) N/A 4.0 μg/m3 (17) 39.0
 
Jan. 17, 2019, 5 p.m. 56180.0 ppb (14067) 36.1 ppb (33) N/A 20.0 ppb (19) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 33.0
 
Jan. 17, 2019, 4 p.m. 55080.0 ppb (13791) 38.7 ppb (36) N/A 16.0 ppb (15) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 36.0
 
Jan. 17, 2019, 3 p.m. 68.4 ppb (65) 49.1 ppb (45) N/A 19.0 ppb (18) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 45.0
 
Jan. 17, 2019, 2 p.m. 86.2 ppb (84) 56.7 ppb (53) N/A 30.0 ppb (28) N/A N/A N/A 0.54 ppb (6) N/A 8.0 μg/m3 (33) 53.0
 
Jan. 17, 2019, 1 p.m. 94.2 ppb (93) 70.9 ppb (68) N/A 23.0 ppb (21) N/A N/A N/A 0.64 ppb (7) N/A 8.0 μg/m3 (33) 68.0
 
Jan. 17, 2019, noon 103.8 ppb (101) 70.1 ppb (67) N/A 34.0 ppb (31) N/A N/A N/A 0.65 ppb (7) N/A 9.9 μg/m3 (41) 67.0
 
Jan. 17, 2019, 11 a.m. 111.3 ppb (102) 76.0 ppb (73) N/A 35.0 ppb (32) N/A N/A N/A 0.66 ppb (7) N/A 6.9 μg/m3 (29) 73.0
 
Jan. 17, 2019, 10 a.m. 94430.0 ppb (23653) 64.1 ppb (61) N/A 30.0 ppb (28) N/A N/A N/A 0.57 ppb (6) N/A 2.9 μg/m3 (12) 61.0
 
Jan. 17, 2019, 9 a.m. 48790.0 ppb (12215) 33.1 ppb (31) N/A 16.0 ppb (15) N/A N/A N/A 0.3 ppb (3) N/A 1.0 μg/m3 (4) 31.0
 
Jan. 17, 2019, 8 a.m. 32190.0 ppb (8054) 19.2 ppb (18) N/A 13.0 ppb (12) N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (12) 18.0