AQSQID: 440071010

Site Name: E Providence

Location: Rumford (Rumford), RI

Reporting: True, Located: True

Current AQI: 63.0

Rumford (Rumford) RI, US: 41.840302, -71.361702

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 23, 2020, 3 a.m. 65.9 ppb (63) 23.4 ppb (22) 61.3 ppb (58) 43.0 ppb (40) 43.0 ppb (40) 1.0 ppb (1) 3.0 ppb (2) 0.59 ppb (7) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 23, 2020, 2 a.m. 64.4 ppb (61) 22.5 ppb (21) 61.7 ppb (58) 42.0 ppb (39) 41.9 ppb (39) 1.0 ppb (1) 3.0 ppb (2) 0.66 ppb (7) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 23, 2020, 1 a.m. 58.3 ppb (55) 19.2 ppb (18) 57.3 ppb (54) 39.0 ppb (36) 41.2 ppb (38) 0.0 ppb (0) 4.0 ppb (3) 0.61 ppb (7) N/A 21.0 μg/m3 (69) 69.0
 
Jan. 23, 2020, midnight 36.3 ppb (34) 2.1 ppb (2) 39.5 ppb (37) 34.0 ppb (31) 33.3 ppb (31) 0.0 ppb (0) 8.0 ppb (6) 0.4 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 22, 2020, 11 p.m. 30.7 ppb (28) 0.7 ppb (1) N/A 30.0 ppb (28) N/A 0.0 ppb (0) 15.0 ppb (12) 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 10 p.m. 23.4 ppb (22) 0.7 ppb (1) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 23.0 ppb (18) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 22.0
 
Jan. 22, 2020, 9 p.m. 12.5 ppb (12) 0.7 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 35.0 ppb (27) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 27.0
 
Jan. 22, 2020, 8 p.m. 8.2 ppb (8) 1.1 ppb (1) 8.1 ppb (8) 7.0 ppb (6) 6.9 ppb (6) 0.0 ppb (0) 41.0 ppb (32) 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 22, 2020, 7 p.m. 4.9 ppb (5) 1.0 ppb (1) 4.8 ppb (4) 4.0 ppb (4) 3.7 ppb (3) 0.0 ppb (0) 45.0 ppb (35) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 35.0
 
Jan. 22, 2020, 6 p.m. 5.8 ppb (5) 1.5 ppb (1) 5.7 ppb (5) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 44.0 ppb (34) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 34.0
 
Jan. 22, 2020, 5 p.m. 7.2 ppb (7) 2.1 ppb (2) 7.2 ppb (7) 5.0 ppb (5) 5.1 ppb (5) 0.0 ppb (0) 42.0 ppb (32) 0.18 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 4 p.m. 10.8 ppb (10) 3.4 ppb (3) 10.8 ppb (10) 7.0 ppb (6) 7.4 ppb (7) 1.0 ppb (1) 39.0 ppb (30) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 3 p.m. 21.3 ppb (20) 7.8 ppb (7) 21.0 ppb (19) 14.0 ppb (13) 13.3 ppb (12) 1.0 ppb (1) 33.0 ppb (25) 0.29 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 22, 2020, 2 p.m. 55.0 ppb (51) 26.8 ppb (25) 53.1 ppb (49) 28.0 ppb (26) 27.3 ppb (25) 1.0 ppb (1) 19.0 ppb (15) 0.56 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 22, 2020, 1 p.m. 125.1 ppb (105) 82.0 ppb (80) 117.4 ppb (103) 43.0 ppb (40) 42.1 ppb (39) 1.0 ppb (1) 6.0 ppb (5) 1.06 ppb (12) N/A 21.0 μg/m3 (69) 105.0
 
Jan. 22, 2020, noon 141.6 ppb (108) 100.1 ppb (99) 135.1 ppb (107) 42.0 ppb (39) 43.3 ppb (40) 1.0 ppb (1) 3.0 ppb (2) 1.18 ppb (13) N/A 24.0 μg/m3 (76) 108.0
 
Jan. 22, 2020, 11 a.m. 152.6 ppb (110) 110.7 ppb (102) 156.0 ppb (111) 42.0 ppb (39) 46.3 ppb (43) 1.0 ppb (1) 3.0 ppb (2) 1.1 ppb (12) N/A 22.0 μg/m3 (71) 111.0
 
Jan. 22, 2020, 10 a.m. 125.7 ppb (105) 85.7 ppb (84) 122.1 ppb (104) 40.0 ppb (37) 42.5 ppb (39) 1.0 ppb (1) 2.0 ppb (2) 0.86 ppb (10) N/A 18.0 μg/m3 (63) 105.0
 
Jan. 22, 2020, 9 a.m. 131.0 ppb (106) 91.1 ppb (89) 123.9 ppb (104) 40.0 ppb (37) 41.3 ppb (38) 1.0 ppb (1) 3.0 ppb (2) 1.0 ppb (11) N/A 28.0 μg/m3 (84) 106.0
 
Jan. 22, 2020, 8 a.m. 135.6 ppb (107) 95.0 ppb (94) 145.8 ppb (109) 41.0 ppb (38) 44.9 ppb (42) 1.0 ppb (1) 3.0 ppb (2) 1.0 ppb (11) N/A 29.0 μg/m3 (86) 109.0
 
Jan. 22, 2020, 7 a.m. 133.1 ppb (106) 92.5 ppb (91) 146.6 ppb (109) 41.0 ppb (38) 45.2 ppb (42) 1.0 ppb (1) 3.0 ppb (2) 1.02 ppb (11) N/A 29.0 μg/m3 (86) 109.0
 
Jan. 22, 2020, 6 a.m. 111.1 ppb (102) 72.7 ppb (70) 113.6 ppb (102) 38.0 ppb (35) 42.9 ppb (40) 1.0 ppb (1) 3.0 ppb (2) 0.83 ppb (9) N/A 35.0 μg/m3 (99) 102.0
 
Jan. 22, 2020, 5 a.m. 116.7 ppb (103) 76.9 ppb (74) 130.4 ppb (106) 40.0 ppb (37) 47.5 ppb (44) 1.0 ppb (1) 5.0 ppb (4) 1.0 ppb (11) N/A 38.0 μg/m3 (106) 106.0
 
Jan. 22, 2020, 4 a.m. 97.2 ppb (96) 58.1 ppb (54) 109.3 ppb (102) 39.0 ppb (36) 42.6 ppb (39) 1.0 ppb (1) 5.0 ppb (4) 0.89 ppb (10) N/A 37.0 μg/m3 (104) 104.0
 
Jan. 22, 2020, 3 a.m. 106.3 ppb (101) 66.0 ppb (63) 125.3 ppb (105) 40.0 ppb (37) 46.6 ppb (43) 1.0 ppb (1) 5.0 ppb (4) 0.94 ppb (10) N/A 31.0 μg/m3 (90) 105.0
 
Jan. 22, 2020, 2 a.m. 91.4 ppb (90) 50.1 ppb (46) 106.8 ppb (101) 41.0 ppb (38) 47.0 ppb (44) 1.0 ppb (1) 4.0 ppb (3) 0.83 ppb (9) N/A 22.0 μg/m3 (71) 101.0
 
Jan. 22, 2020, 1 a.m. 83.8 ppb (82) 41.1 ppb (38) 89.0 ppb (87) 43.0 ppb (40) 46.7 ppb (43) 0.0 ppb (0) 4.0 ppb (3) 0.77 ppb (9) N/A 25.0 μg/m3 (78) 87.0
 
Jan. 22, 2020, midnight 59.5 ppb (56) 18.7 ppb (17) 59.5 ppb (56) 41.0 ppb (38) 42.6 ppb (39) 0.0 ppb (0) 4.0 ppb (3) 0.59 ppb (7) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 21, 2020, 11 p.m. 36.5 ppb (34) 1.7 ppb (2) 41.9 ppb (39) 35.0 ppb (32) 35.4 ppb (33) 0.0 ppb (0) 10.0 ppb (8) 0.52 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2020, 10 p.m. 23.7 ppb (22) 0.3 ppb (0) 25.4 ppb (24) 24.0 ppb (22) 24.3 ppb (23) 0.0 ppb (0) 24.0 ppb (18) 0.27 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2020, 9 p.m. 11.0 ppb (10) 0.4 ppb (0) 12.2 ppb (11) 11.0 ppb (10) 11.4 ppb (11) 0.0 ppb (0) 36.0 ppb (28) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Jan. 21, 2020, 8 p.m. 7.4 ppb (7) 0.7 ppb (1) 7.5 ppb (7) 7.0 ppb (6) 6.8 ppb (6) 0.0 ppb (0) 41.0 ppb (32) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
Jan. 21, 2020, 7 p.m. 6.2 ppb (6) 1.0 ppb (1) 6.4 ppb (6) 5.0 ppb (5) 5.4 ppb (5) 0.0 ppb (0) 43.0 ppb (33) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 33.0
 
Jan. 21, 2020, 6 p.m. 6.6 ppb (6) 1.6 ppb (1) 7.0 ppb (6) 5.0 ppb (5) 5.4 ppb (5) 0.0 ppb (0) 43.0 ppb (33) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 33.0
 
Jan. 21, 2020, 5 p.m. 7.0 ppb (6) 2.0 ppb (2) 7.3 ppb (7) 5.0 ppb (5) 5.2 ppb (5) 0.0 ppb (0) 42.0 ppb (32) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
Jan. 21, 2020, 4 p.m. 8.2 ppb (8) 2.7 ppb (3) 8.5 ppb (8) 6.0 ppb (6) 5.7 ppb (5) 0.0 ppb (0) 41.0 ppb (32) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 32.0
 
Jan. 21, 2020, 3 p.m. 10.0 ppb (9) 3.3 ppb (3) 10.5 ppb (10) 7.0 ppb (6) 7.2 ppb (7) 0.0 ppb (0) 40.0 ppb (31) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 31.0
 
Jan. 21, 2020, 2 p.m. 10.9 ppb (10) 3.1 ppb (3) 11.3 ppb (10) 8.0 ppb (7) 8.2 ppb (8) 0.0 ppb (0) 38.0 ppb (29) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 29.0
 
Jan. 21, 2020, 1 p.m. 22.0 ppb (20) 5.1 ppb (5) 22.7 ppb (21) 17.0 ppb (16) 17.6 ppb (16) 0.0 ppb (0) 29.0 ppb (22) 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, noon 32.3 ppb (30) 5.0 ppb (5) 33.1 ppb (31) 27.0 ppb (25) 27.9 ppb (26) 0.0 ppb (0) 18.0 ppb (14) 0.37 ppb (4) N/A 4.0 μg/m3 (17) 31.0
 
Jan. 21, 2020, 11 a.m. 20.7 ppb (19) 0.9 ppb (1) 20.1 ppb (19) 20.0 ppb (19) 19.4 ppb (18) 0.0 ppb (0) 24.0 ppb (18) 0.3 ppb (3) N/A 3.0 μg/m3 (12) 19.0
 
Jan. 21, 2020, 10 a.m. 15.3 ppb (14) 0.3 ppb (0) 15.0 ppb (14) 15.0 ppb (14) 14.6 ppb (14) 0.0 ppb (0) 29.0 ppb (22) 0.22 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
Jan. 21, 2020, 9 a.m. 13.5 ppb (12) 0.2 ppb (0) 13.3 ppb (12) 13.0 ppb (12) 13.0 ppb (12) 0.0 ppb (0) 30.0 ppb (23) 0.21 ppb (2) N/A 4.0 μg/m3 (17) 23.0
 
Jan. 21, 2020, 8 a.m. 12.2 ppb (11) 0.3 ppb (0) 12.0 ppb (11) 12.0 ppb (11) 11.7 ppb (11) 0.0 ppb (0) 32.0 ppb (25) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
Jan. 21, 2020, 7 a.m. 13.1 ppb (12) 0.6 ppb (1) 12.9 ppb (12) 13.0 ppb (12) 12.6 ppb (12) 0.0 ppb (0) N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 6 a.m. 10.5 ppb (10) 0.1 ppb (0) 10.6 ppb (10) 10.0 ppb (9) 10.5 ppb (10) 0.0 ppb (0) 33.0 ppb (25) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 5 a.m. 9.5 ppb (9) 0.1 ppb (0) 9.7 ppb (9) 9.0 ppb (8) 9.5 ppb (9) 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 21, 2020, 4 a.m. 9.2 ppb (9) 0.0 ppb (0) 9.5 ppb (9) 9.0 ppb (8) 9.3 ppb (9) 0.0 ppb (0) 34.0 ppb (26) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 21, 2020, 3 a.m. 8.6 ppb (8) 0.1 ppb (0) 8.8 ppb (8) 9.0 ppb (8) 8.7 ppb (8) 0.0 ppb (0) 36.0 ppb (28) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 28.0
 
Jan. 21, 2020, 2 a.m. 8.6 ppb (8) 0.1 ppb (0) 8.8 ppb (8) 9.0 ppb (8) 8.6 ppb (8) 0.0 ppb (0) 37.0 ppb (28) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
Jan. 21, 2020, 1 a.m. 9.6 ppb (9) 0.2 ppb (0) 9.5 ppb (9) 9.0 ppb (8) 9.2 ppb (9) 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Jan. 21, 2020, midnight 11.5 ppb (11) 0.2 ppb (0) 11.0 ppb (10) 11.0 ppb (10) 10.8 ppb (10) 0.0 ppb (0) 34.0 ppb (26) 0.23 ppb (3) N/A 1.0 μg/m3 (4) 26.0
 
Jan. 20, 2020, 11 p.m. 8.1 ppb (8) 0.1 ppb (0) 8.1 ppb (8) 8.0 ppb (7) 7.9 ppb (7) 0.0 ppb (0) 38.0 ppb (29) 0.19 ppb (2) N/A 0.0 μg/m3 (0) 29.0
 
Jan. 20, 2020, 10 p.m. 7.2 ppb (7) 0.1 ppb (0) 7.2 ppb (7) 7.0 ppb (6) 7.1 ppb (7) 0.0 ppb (0) 39.0 ppb (30) 0.19 ppb (2) N/A 0.0 μg/m3 (0) 30.0
 
Jan. 20, 2020, 9 p.m. 4.8 ppb (4) 0.3 ppb (0) 4.8 ppb (4) 5.0 ppb (5) 4.5 ppb (4) 0.0 ppb (0) 42.0 ppb (32) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 32.0
 
Jan. 20, 2020, 8 p.m. 3.6 ppb (3) 0.6 ppb (1) 3.7 ppb (3) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 34.0
 
Jan. 20, 2020, 7 p.m. 3.1 ppb (3) 0.8 ppb (1) 3.2 ppb (3) 2.0 ppb (2) 2.4 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 35.0
 
Jan. 20, 2020, 6 p.m. 3.2 ppb (3) 0.9 ppb (1) 3.3 ppb (3) 2.0 ppb (2) 2.3 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 35.0
 
Jan. 20, 2020, 5 p.m. 3.3 ppb (3) 1.0 ppb (1) 3.5 ppb (3) 2.0 ppb (2) 2.5 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 35.0
 
Jan. 20, 2020, 4 p.m. 3.7 ppb (3) 1.2 ppb (1) 3.8 ppb (4) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 43.0 ppb (33) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 33.0
 
Jan. 20, 2020, 3 p.m. 4.4 ppb (4) 1.4 ppb (1) 4.7 ppb (4) 3.0 ppb (3) 3.2 ppb (3) 0.0 ppb (0) 41.0 ppb (32) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 32.0
 
Jan. 20, 2020, 2 p.m. 5.1 ppb (5) 1.5 ppb (1) 5.2 ppb (5) 4.0 ppb (4) 3.6 ppb (3) 0.0 ppb (0) 39.0 ppb (30) 0.18 ppb (2) N/A 0.0 μg/m3 (0) 30.0
 
Jan. 20, 2020, 1 p.m. 6.0 ppb (6) 1.1 ppb (1) 6.2 ppb (6) 5.0 ppb (5) 5.0 ppb (5) 0.0 ppb (0) 36.0 ppb (28) 0.19 ppb (2) N/A 2.0 μg/m3 (8) 28.0
 
Jan. 20, 2020, noon 6.7 ppb (6) 0.5 ppb (0) 6.9 ppb (6) 6.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) N/A 1.0 μg/m3 (4) 26.0
 
Jan. 20, 2020, 11 a.m. 5.4 ppb (5) 0.3 ppb (0) 5.0 ppb (5) 5.0 ppb (5) 4.8 ppb (4) 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) N/A 1.0 μg/m3 (4) 28.0
 
Jan. 20, 2020, 10 a.m. 4.2 ppb (4) 0.3 ppb (0) 3.7 ppb (3) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 20, 2020, 9 a.m. 4.0 ppb (4) 0.2 ppb (0) 3.6 ppb (3) 4.0 ppb (4) 3.3 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
Jan. 20, 2020, 8 a.m. 3.7 ppb (3) 0.1 ppb (0) 3.6 ppb (3) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 20, 2020, 7 a.m. 3.2 ppb (3) 0.1 ppb (0) 3.0 ppb (3) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 29.0
 
Jan. 20, 2020, 6 a.m. N/A N/A 3.2 ppb (3) N/A 3.0 ppb (3) N/A 38.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
Jan. 20, 2020, 5 a.m. N/A N/A 2.8 ppb (3) N/A 2.6 ppb (2) N/A 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
Jan. 20, 2020, 4 a.m. 3.5 ppb (3) 0.1 ppb (0) 3.3 ppb (3) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 35.0 ppb (27) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 27.0
 
Jan. 20, 2020, 3 a.m. 2.7 ppb (3) 0.1 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 29.0
 
Jan. 20, 2020, 2 a.m. 3.3 ppb (3) 0.1 ppb (0) 3.1 ppb (3) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 36.0 ppb (28) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 28.0
 
Jan. 20, 2020, 1 a.m. 3.2 ppb (3) 0.1 ppb (0) 3.0 ppb (3) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 35.0 ppb (27) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 27.0
 
Jan. 20, 2020, midnight 3.8 ppb (4) 0.1 ppb (0) 3.4 ppb (3) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 32.0 ppb (25) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
Jan. 19, 2020, 11 p.m. 4.9 ppb (5) 0.1 ppb (0) 4.3 ppb (4) 5.0 ppb (5) 4.2 ppb (4) 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
Jan. 19, 2020, 10 p.m. 4.6 ppb (4) 0.1 ppb (0) 3.9 ppb (4) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 28.0 ppb (22) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
Jan. 19, 2020, 9 p.m. 14.7 ppb (14) 8.5 ppb (8) 3.4 ppb (3) 6.0 ppb (6) 3.1 ppb (3) 3.0 ppb (4) 28.0 ppb (22) 0.46 ppb (5) N/A 2.0 μg/m3 (8) 22.0
 
Jan. 19, 2020, 8 p.m. 10.0 ppb (9) 4.0 ppb (4) 3.7 ppb (3) 6.0 ppb (6) 3.1 ppb (3) 1.0 ppb (1) 29.0 ppb (22) 0.35 ppb (4) N/A 2.0 μg/m3 (8) 22.0
 
Jan. 19, 2020, 7 p.m. 4.4 ppb (4) 0.7 ppb (1) 3.2 ppb (3) 4.0 ppb (4) 2.3 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.2 ppb (2) N/A 1.0 μg/m3 (4) 23.0
 
Jan. 19, 2020, 6 p.m. 3.1 ppb (3) 0.8 ppb (1) 2.7 ppb (3) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 24.0
 
Jan. 19, 2020, 5 p.m. 7.9 ppb (7) 3.9 ppb (4) 3.0 ppb (3) 4.0 ppb (4) 2.0 ppb (2) 1.0 ppb (1) 30.0 ppb (23) 0.29 ppb (3) N/A 4.0 μg/m3 (17) 23.0
 
Jan. 19, 2020, 4 p.m. 9.4 ppb (9) 3.9 ppb (4) 3.6 ppb (3) 6.0 ppb (6) 2.3 ppb (2) 1.0 ppb (1) 29.0 ppb (22) 0.31 ppb (3) N/A 2.0 μg/m3 (8) 22.0
 
Jan. 19, 2020, 3 p.m. 6.7 ppb (6) 1.4 ppb (1) 4.6 ppb (4) 5.0 ppb (5) 2.9 ppb (3) 0.0 ppb (0) 28.0 ppb (22) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 22.0
 
Jan. 19, 2020, 2 p.m. 9.1 ppb (8) 2.9 ppb (3) 9.2 ppb (9) 6.0 ppb (6) 6.1 ppb (6) 0.0 ppb (0) 26.0 ppb (20) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2020, 1 p.m. 13.4 ppb (12) 3.3 ppb (3) 13.6 ppb (13) 10.0 ppb (9) 10.1 ppb (9) 0.0 ppb (0) 21.0 ppb (16) 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, noon 11.4 ppb (11) 0.8 ppb (1) 10.9 ppb (10) 11.0 ppb (10) 10.0 ppb (9) 0.0 ppb (0) 21.0 ppb (16) 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 11 a.m. 15.2 ppb (14) 2.3 ppb (2) 11.9 ppb (11) 13.0 ppb (12) 11.6 ppb (11) 1.0 ppb (1) 21.0 ppb (16) 0.3 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 10 a.m. 26.3 ppb (24) 5.2 ppb (5) 17.9 ppb (17) 21.0 ppb (19) 15.7 ppb (15) 1.0 ppb (1) 19.0 ppb (15) 0.38 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2020, 9 a.m. 36.8 ppb (34) 6.2 ppb (6) 36.5 ppb (34) 31.0 ppb (29) 30.4 ppb (28) 1.0 ppb (1) 4.0 ppb (3) 0.49 ppb (5) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 19, 2020, 8 a.m. 32.0 ppb (30) 2.3 ppb (2) 32.7 ppb (30) 30.0 ppb (28) 30.3 ppb (28) 0.0 ppb (0) 4.0 ppb (3) 0.41 ppb (5) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 19, 2020, 7 a.m. 37.3 ppb (35) 4.8 ppb (4) 37.7 ppb (35) 33.0 ppb (31) 33.0 ppb (31) 0.0 ppb (0) 3.0 ppb (2) 0.45 ppb (5) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 19, 2020, 6 a.m. 33.2 ppb (31) 2.2 ppb (2) 33.8 ppb (31) 31.0 ppb (29) 31.5 ppb (29) 0.0 ppb (0) 5.0 ppb (4) 0.42 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 19, 2020, 5 a.m. 42.5 ppb (39) 8.1 ppb (8) 42.8 ppb (40) 34.0 ppb (31) 34.8 ppb (32) 0.0 ppb (0) 4.0 ppb (3) 0.46 ppb (5) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 19, 2020, 4 a.m. 45.9 ppb (42) 9.1 ppb (8) 46.6 ppb (43) 37.0 ppb (34) 37.5 ppb (35) 0.0 ppb (0) 4.0 ppb (3) 0.53 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 19, 2020, 3 a.m. 22.0 ppb (20) 1.0 ppb (1) 22.4 ppb (21) 21.0 ppb (19) 21.2 ppb (20) 0.0 ppb (0) 17.0 ppb (13) 0.33 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 2 a.m. 16.2 ppb (15) 0.3 ppb (0) 16.3 ppb (15) 16.0 ppb (15) 16.0 ppb (15) 0.0 ppb (0) 23.0 ppb (18) 0.3 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 1 a.m. 10.7 ppb (10) 0.3 ppb (0) 12.0 ppb (11) 11.0 ppb (10) 11.3 ppb (10) 0.0 ppb (0) 29.0 ppb (22) 0.28 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, midnight 8.8 ppb (8) 0.3 ppb (0) 9.8 ppb (9) 9.0 ppb (8) 9.2 ppb (9) 0.0 ppb (0) 32.0 ppb (25) 0.24 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 18, 2020, 11 p.m. 9.7 ppb (9) 0.6 ppb (1) 10.6 ppb (10) 9.0 ppb (8) 9.7 ppb (9) 0.0 ppb (0) 32.0 ppb (25) 0.25 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 18, 2020, 10 p.m. 9.1 ppb (8) 0.5 ppb (0) 10.1 ppb (9) 9.0 ppb (8) 9.1 ppb (8) 0.0 ppb (0) 35.0 ppb (27) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 9 p.m. 8.1 ppb (8) 0.7 ppb (1) 9.0 ppb (8) 7.0 ppb (6) 8.2 ppb (8) 0.0 ppb (0) 38.0 ppb (29) 0.21 ppb (2) N/A 4.0 μg/m3 (17) 29.0
 
Jan. 18, 2020, 8 p.m. 10.1 ppb (9) 1.0 ppb (1) 11.2 ppb (10) 9.0 ppb (8) 9.9 ppb (9) 0.0 ppb (0) 35.0 ppb (27) 0.22 ppb (2) N/A 4.0 μg/m3 (17) 27.0
 
Jan. 18, 2020, 7 p.m. 10.7 ppb (10) 1.1 ppb (1) 12.2 ppb (11) 10.0 ppb (9) 10.7 ppb (10) 0.0 ppb (0) 35.0 ppb (27) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 6 p.m. 11.3 ppb (10) 1.5 ppb (1) 12.7 ppb (12) 10.0 ppb (9) 10.8 ppb (10) 0.0 ppb (0) 35.0 ppb (27) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 27.0
 
Jan. 18, 2020, 5 p.m. 11.9 ppb (11) 2.5 ppb (2) 13.1 ppb (12) 10.0 ppb (9) 10.5 ppb (10) 0.0 ppb (0) 35.0 ppb (27) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 27.0
 
Jan. 18, 2020, 4 p.m. 8.9 ppb (8) 1.4 ppb (1) 10.1 ppb (9) 8.0 ppb (7) 8.5 ppb (8) 0.0 ppb (0) 36.0 ppb (28) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Jan. 18, 2020, 3 p.m. 8.2 ppb (8) 1.3 ppb (1) 9.1 ppb (8) 7.0 ppb (6) 7.7 ppb (7) 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Jan. 18, 2020, 2 p.m. 7.4 ppb (7) 1.2 ppb (1) 8.2 ppb (8) 6.0 ppb (6) 7.0 ppb (6) 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 18, 2020, 1 p.m. 6.2 ppb (6) 0.5 ppb (0) 7.1 ppb (7) 6.0 ppb (6) 6.5 ppb (6) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 29.0
 
Jan. 18, 2020, noon 6.2 ppb (6) 0.2 ppb (0) 6.8 ppb (6) 6.0 ppb (6) 6.5 ppb (6) 0.0 ppb (0) 37.0 ppb (28) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
Jan. 18, 2020, 11 a.m. 6.0 ppb (6) 0.2 ppb (0) 6.3 ppb (6) 6.0 ppb (6) 6.1 ppb (6) 0.0 ppb (0) 37.0 ppb (28) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 18, 2020, 10 a.m. 8.5 ppb (8) 0.1 ppb (0) 8.9 ppb (8) 8.0 ppb (7) 8.7 ppb (8) 0.0 ppb (0) 35.0 ppb (27) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 27.0
 
Jan. 18, 2020, 9 a.m. 5.9 ppb (5) 0.2 ppb (0) 6.1 ppb (6) 6.0 ppb (6) 5.9 ppb (5) 0.0 ppb (0) 38.0 ppb (29) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 29.0
 
Jan. 18, 2020, 8 a.m. 5.3 ppb (5) 0.2 ppb (0) 5.6 ppb (5) 5.0 ppb (5) 5.4 ppb (5) 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 30.0
 
Jan. 18, 2020, 7 a.m. 5.1 ppb (5) 0.2 ppb (0) 5.4 ppb (5) 5.0 ppb (5) 5.1 ppb (5) 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 30.0
 
Jan. 18, 2020, 6 a.m. 6.4 ppb (6) 0.2 ppb (0) 6.7 ppb (6) 6.0 ppb (6) 6.4 ppb (6) 0.0 ppb (0) 38.0 ppb (29) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 29.0
 
Jan. 18, 2020, 5 a.m. 7.7 ppb (7) 0.2 ppb (0) 8.0 ppb (7) 8.0 ppb (7) 7.8 ppb (7) 0.0 ppb (0) 37.0 ppb (28) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 28.0
 
Jan. 18, 2020, 4 a.m. 7.1 ppb (7) 0.2 ppb (0) 7.4 ppb (7) 7.0 ppb (6) 7.1 ppb (7) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 29.0
 
Jan. 18, 2020, 3 a.m. 5.6 ppb (5) 0.2 ppb (0) 5.9 ppb (5) 6.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 40.0 ppb (31) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 31.0
 
Jan. 18, 2020, 2 a.m. 4.8 ppb (4) 0.2 ppb (0) 5.1 ppb (5) 5.0 ppb (5) 4.8 ppb (4) 0.0 ppb (0) 41.0 ppb (32) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 32.0
 
Jan. 18, 2020, 1 a.m. 4.5 ppb (4) 0.2 ppb (0) 4.8 ppb (4) 4.0 ppb (4) 4.6 ppb (4) 0.0 ppb (0) 42.0 ppb (32) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 32.0
 
Jan. 18, 2020, midnight 3.7 ppb (3) 0.2 ppb (0) 3.9 ppb (4) 4.0 ppb (4) 3.6 ppb (3) 0.0 ppb (0) 44.0 ppb (34) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 34.0
 
Jan. 17, 2020, 11 p.m. 3.3 ppb (3) 0.2 ppb (0) 3.4 ppb (3) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 45.0 ppb (35) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 35.0
 
Jan. 17, 2020, 10 p.m. 3.5 ppb (3) 0.2 ppb (0) 3.6 ppb (3) 3.0 ppb (3) 3.4 ppb (3) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 35.0
 
Jan. 17, 2020, 9 p.m. 3.7 ppb (3) 0.2 ppb (0) 4.0 ppb (4) 4.0 ppb (4) 3.7 ppb (3) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 35.0
 
Jan. 17, 2020, 8 p.m. 2.7 ppb (3) 0.5 ppb (0) 2.9 ppb (3) 2.0 ppb (2) 2.4 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 35.0
 
Jan. 17, 2020, 7 p.m. 2.7 ppb (3) 0.7 ppb (1) 2.7 ppb (3) 2.0 ppb (2) 2.0 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 35.0
 
Jan. 17, 2020, 6 p.m. 2.6 ppb (2) 0.7 ppb (1) 2.8 ppb (3) 2.0 ppb (2) 2.1 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 35.0
 
Jan. 17, 2020, 5 p.m. 2.6 ppb (2) 0.7 ppb (1) 2.7 ppb (3) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 35.0
 
Jan. 17, 2020, 4 p.m. 3.0 ppb (3) 0.9 ppb (1) 3.0 ppb (3) 2.0 ppb (2) 2.1 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 35.0
 
Jan. 17, 2020, 3 p.m. 3.4 ppb (3) 1.0 ppb (1) 3.3 ppb (3) 2.0 ppb (2) 2.2 ppb (2) 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 33.0
 
Jan. 17, 2020, 2 p.m. 3.0 ppb (3) 0.8 ppb (1) 3.0 ppb (3) 2.0 ppb (2) 2.2 ppb (2) 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 33.0
 
Jan. 17, 2020, 1 p.m. 3.1 ppb (3) 0.6 ppb (1) 2.9 ppb (3) 3.0 ppb (3) 2.3 ppb (2) 0.0 ppb (0) 42.0 ppb (32) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 32.0
 
Jan. 17, 2020, noon 3.1 ppb (3) 0.3 ppb (0) 3.0 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 42.0 ppb (32) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 32.0
 
Jan. 17, 2020, 11 a.m. 2.9 ppb (3) 0.2 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 32.0
 
Jan. 17, 2020, 10 a.m. 2.4 ppb (2) 0.2 ppb (0) 2.3 ppb (2) 2.0 ppb (2) 2.0 ppb (2) 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) N/A 0.0 μg/m3 (0) 32.0
 
Jan. 17, 2020, 9 a.m. 2.0 ppb (2) 0.2 ppb (0) 1.9 ppb (2) 2.0 ppb (2) 1.6 ppb (1) 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) N/A 0.0 μg/m3 (0) 29.0
 
Jan. 17, 2020, 8 a.m. 1.8 ppb (2) 0.2 ppb (0) 1.7 ppb (2) 2.0 ppb (2) 1.5 ppb (1) 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A -3.0 μg/m3 (0) 28.0
 
Jan. 17, 2020, 7 a.m. N/A N/A 1.9 ppb (2) N/A 1.6 ppb (1) N/A 35.0 ppb (27) N/A N/A -2.0 μg/m3 (0) 27.0
 
Jan. 17, 2020, 6 a.m. N/A N/A 1.5 ppb (1) N/A 1.3 ppb (1) N/A 36.0 ppb (28) N/A N/A -2.0 μg/m3 (0) 28.0
 
Jan. 17, 2020, 5 a.m. N/A N/A 1.4 ppb (1) N/A 1.2 ppb (1) N/A 36.0 ppb (28) N/A N/A -3.0 μg/m3 (0) 28.0
 
Jan. 17, 2020, 3 a.m. 2.2 ppb (2) 0.2 ppb (0) 2.1 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 24.0
 
Jan. 17, 2020, 2 a.m. 2.5 ppb (2) 0.2 ppb (0) 2.3 ppb (2) 2.0 ppb (2) 2.1 ppb (2) 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
Jan. 17, 2020, 1 a.m. 3.0 ppb (3) 0.2 ppb (0) 2.8 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
Jan. 17, 2020, midnight 2.7 ppb (3) 0.2 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 23.0
 
Jan. 16, 2020, 11 p.m. 3.0 ppb (3) 0.2 ppb (0) 2.9 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 24.0
 
Jan. 16, 2020, 10 p.m. 3.9 ppb (4) 0.2 ppb (0) 3.8 ppb (4) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 31.0 ppb (24) 0.19 ppb (2) N/A 0.0 μg/m3 (0) 24.0
 
Jan. 16, 2020, 9 p.m. 2.5 ppb (2) 0.2 ppb (0) 2.3 ppb (2) 2.0 ppb (2) 2.1 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 1.0 μg/m3 (4) 24.0
 
Jan. 16, 2020, 8 p.m. 2.3 ppb (2) 0.4 ppb (0) 2.1 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 0.0 μg/m3 (0) 24.0
 
Jan. 16, 2020, 7 p.m. 2.3 ppb (2) 0.5 ppb (0) 2.1 ppb (2) 2.0 ppb (2) 1.6 ppb (1) 0.0 ppb (0) 30.0 ppb (23) 0.18 ppb (2) N/A -1.0 μg/m3 (0) 23.0
 
Jan. 16, 2020, 6 p.m. 2.6 ppb (2) 0.5 ppb (0) 2.4 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.18 ppb (2) N/A 1.0 μg/m3 (4) 23.0
 
Jan. 16, 2020, 5 p.m. 3.6 ppb (3) 0.8 ppb (1) 3.4 ppb (3) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 29.0 ppb (22) 0.19 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
Jan. 16, 2020, 4 p.m. 4.2 ppb (4) 1.2 ppb (1) 3.8 ppb (4) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 23.0
 
Jan. 16, 2020, 3 p.m. 5.8 ppb (5) 1.6 ppb (1) 5.1 ppb (5) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 26.0 ppb (20) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 2 p.m. 18.8 ppb (17) 3.5 ppb (3) 15.7 ppb (15) 15.0 ppb (14) 12.2 ppb (11) 0.0 ppb (0) 14.0 ppb (11) 0.29 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 1 p.m. 15.3 ppb (14) 1.9 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 16.0 ppb (12) 0.31 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2020, noon 18.5 ppb (17) 2.0 ppb (2) 19.1 ppb (18) 17.0 ppb (16) 16.8 ppb (16) 0.0 ppb (0) 10.0 ppb (8) 0.33 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2020, 11 a.m. 16.2 ppb (15) 1.6 ppb (1) 16.5 ppb (15) 15.0 ppb (14) 14.2 ppb (13) 0.0 ppb (0) 13.0 ppb (10) 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, 10 a.m. 16.5 ppb (15) 1.8 ppb (2) 16.8 ppb (16) 15.0 ppb (14) 14.1 ppb (13) 0.0 ppb (0) 13.0 ppb (10) 0.3 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2020, 9 a.m. 36.5 ppb (34) 13.4 ppb (12) 34.5 ppb (32) 23.0 ppb (21) 22.8 ppb (21) 0.0 ppb (0) 3.0 ppb (2) 0.47 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2020, 8 a.m. 70.8 ppb (68) 44.9 ppb (42) 69.0 ppb (66) 26.0 ppb (24) 26.1 ppb (24) 0.0 ppb (0) N/A 0.67 ppb (7) N/A 16.0 μg/m3 (59) 68.0
 
Jan. 16, 2020, 7 a.m. 78.3 ppb (76) 52.2 ppb (48) 71.9 ppb (69) 26.0 ppb (24) 23.8 ppb (22) 1.0 ppb (1) N/A 0.77 ppb (9) N/A 20.0 μg/m3 (67) 76.0
 
Jan. 16, 2020, 6 a.m. 61.2 ppb (58) 37.2 ppb (34) 64.5 ppb (61) 24.0 ppb (22) 25.8 ppb (24) 0.0 ppb (0) 2.0 ppb (2) 0.65 ppb (7) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 16, 2020, 5 a.m. 49.8 ppb (46) 29.4 ppb (27) 52.4 ppb (49) 21.0 ppb (19) 23.1 ppb (21) 0.0 ppb (0) 2.0 ppb (2) 0.67 ppb (7) N/A 31.0 μg/m3 (90) 90.0
 
Jan. 16, 2020, 3 a.m. 54.8 ppb (51) 31.1 ppb (29) 72.4 ppb (70) 24.0 ppb (22) 31.3 ppb (29) 0.0 ppb (0) 3.0 ppb (2) 0.7 ppb (8) N/A 20.0 μg/m3 (67) 70.0
 
Jan. 16, 2020, 2 a.m. 52.8 ppb (49) 24.7 ppb (23) 53.6 ppb (50) 28.0 ppb (26) 32.2 ppb (30) 0.0 ppb (0) 3.0 ppb (2) 0.56 ppb (6) N/A 13.0 μg/m3 (52) 52.0