ID: 2439

AQSQID: 291890016

Site Name: Rider Trail I-70

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

Updated: Sept. 19, 2020, 3:39 p.m.

Location: Bridgeton (Natural Bridge Jct), MO

Reporting: True, Located: True

Current AQI: 15.0

Bridgeton (Natural Bridge Jct) MO, US: 38.75264, -90.44884

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 19, 2020, 2 p.m. 15.8 ppb (15) 7.4 ppb (7) N/A 8.0 ppb (7) N/A 2.0 ppb (3) N/A N/A N/A N/A 15.0
 
Sept. 19, 2020, 1 p.m. 7.2 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A 2.0 ppb (3) N/A N/A N/A N/A 7.0
 
Sept. 19, 2020, noon 5.5 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A 2.0 ppb (3) N/A N/A N/A N/A 5.0
 
Sept. 19, 2020, 11 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 19, 2020, 10 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 19, 2020, 9 a.m. 3.8 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 4.0
 
Sept. 19, 2020, 8 a.m. 3.4 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 4.0
 
Sept. 19, 2020, 7 a.m. 2.7 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A N/A N/A 3.0
 
Sept. 19, 2020, 6 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 19, 2020, 5 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 19, 2020, 4 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 4.0
 
Sept. 19, 2020, 3 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 19, 2020, 2 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 19, 2020, 1 a.m. 2.6 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 19, 2020, midnight 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 11 p.m. 2.8 ppb (3) 1.4 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 10 p.m. 2.7 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 9 p.m. 2.9 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 8 p.m. 2.1 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 7 p.m. 1.8 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 6 p.m. 1.5 ppb (1) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 18, 2020, 5 p.m. 2.8 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 4 p.m. 3.6 ppb (3) 1.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 3 p.m. 4.6 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A N/A N/A 4.0
 
Sept. 18, 2020, 2 p.m. 6.2 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A 3.0 ppb (4) N/A N/A N/A N/A 6.0
 
Sept. 18, 2020, 1 p.m. 7.6 ppb (7) 2.7 ppb (3) N/A 5.0 ppb (5) N/A 3.0 ppb (4) N/A N/A N/A N/A 7.0
 
Sept. 18, 2020, noon 11.5 ppb (11) 2.3 ppb (2) N/A 9.0 ppb (8) N/A 2.0 ppb (3) N/A N/A N/A N/A 11.0
 
Sept. 18, 2020, 11 a.m. 10.5 ppb (10) 1.4 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A N/A N/A 10.0
 
Sept. 18, 2020, 10 a.m. 5.2 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 5.0
 
Sept. 18, 2020, 9 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 18, 2020, 8 a.m. 1.2 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 7 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 18, 2020, 6 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 18, 2020, 5 a.m. 2.2 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 18, 2020, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 3 a.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 2 a.m. 4.2 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A N/A N/A 4.0
 
Sept. 18, 2020, 1 a.m. 3.6 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, midnight 3.5 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 3.0
 
Sept. 17, 2020, 11 p.m. 2.6 ppb (2) 1.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 17, 2020, 10 p.m. 2.2 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 17, 2020, 9 p.m. 2.2 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 17, 2020, 8 p.m. 2.1 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 17, 2020, 7 p.m. 2.5 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 17, 2020, 4 p.m. 2.0 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 2.0
 
Sept. 17, 2020, 3 p.m. 2.1 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 17, 2020, 2 p.m. 2.2 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 17, 2020, 1 p.m. 4.6 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) N/A N/A N/A N/A 4.0
 
Sept. 17, 2020, noon 14.1 ppb (13) 3.4 ppb (3) N/A 11.0 ppb (10) N/A 2.0 ppb (3) N/A N/A N/A N/A 13.0
 
Sept. 17, 2020, 11 a.m. 14.1 ppb (13) 3.0 ppb (3) N/A 11.0 ppb (10) N/A 1.0 ppb (1) N/A N/A N/A N/A 13.0
 
Sept. 17, 2020, 10 a.m. 6.0 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 17, 2020, 9 a.m. 12.3 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 11.0
 
Sept. 17, 2020, 8 a.m. 21.7 ppb (20) 10.7 ppb (10) N/A 11.0 ppb (10) N/A 1.0 ppb (1) N/A N/A N/A N/A 20.0
 
Sept. 17, 2020, 7 a.m. 14.3 ppb (13) 4.3 ppb (4) N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A N/A N/A 13.0
 
Sept. 17, 2020, 6 a.m. 19.4 ppb (18) 7.2 ppb (7) N/A 12.0 ppb (11) N/A 1.0 ppb (1) N/A N/A N/A N/A 18.0
 
Sept. 17, 2020, 5 a.m. 20.4 ppb (19) 5.2 ppb (5) N/A 15.0 ppb (14) N/A 1.0 ppb (1) N/A N/A N/A N/A 19.0
 
Sept. 17, 2020, 4 a.m. 31.2 ppb (29) 9.2 ppb (9) N/A 22.0 ppb (20) N/A 1.0 ppb (1) N/A N/A N/A N/A 29.0
 
Sept. 17, 2020, 3 a.m. 64.9 ppb (62) 31.4 ppb (29) N/A 33.0 ppb (31) N/A 2.0 ppb (3) N/A N/A N/A N/A 62.0
 
Sept. 17, 2020, 2 a.m. 65.1 ppb (62) 27.1 ppb (25) N/A 38.0 ppb (35) N/A 2.0 ppb (3) N/A N/A N/A N/A 62.0
 
Sept. 17, 2020, 1 a.m. 61.0 ppb (57) 21.4 ppb (20) N/A 40.0 ppb (37) N/A 2.0 ppb (3) N/A N/A N/A N/A 57.0
 
Sept. 17, 2020, midnight 20.9 ppb (19) 5.1 ppb (5) N/A 16.0 ppb (15) N/A 2.0 ppb (3) N/A N/A N/A N/A 19.0
 
Sept. 16, 2020, 11 p.m. 5.2 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 2.0 ppb (3) N/A N/A N/A N/A 5.0
 
Sept. 16, 2020, 10 p.m. 16.1 ppb (15) 3.5 ppb (3) N/A 13.0 ppb (12) N/A 2.0 ppb (3) N/A N/A N/A N/A 15.0
 
Sept. 16, 2020, 9 p.m. 3.7 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 16, 2020, 8 p.m. 4.0 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) N/A N/A N/A N/A 4.0
 
Sept. 16, 2020, 7 p.m. 7.8 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A 2.0 ppb (3) N/A N/A N/A N/A 7.0
 
Sept. 16, 2020, 6 p.m. 6.9 ppb (6) 2.4 ppb (2) N/A 5.0 ppb (5) N/A 2.0 ppb (3) N/A N/A N/A N/A 6.0
 
Sept. 16, 2020, 5 p.m. 14.1 ppb (13) 5.9 ppb (5) N/A 8.0 ppb (7) N/A 3.0 ppb (4) N/A N/A N/A N/A 13.0
 
Sept. 16, 2020, 4 p.m. 42.1 ppb (39) 21.8 ppb (20) N/A 20.0 ppb (19) N/A 3.0 ppb (4) N/A N/A N/A N/A 39.0
 
Sept. 16, 2020, 3 p.m. 64.4 ppb (61) 36.9 ppb (34) N/A 27.0 ppb (25) N/A 3.0 ppb (4) N/A N/A N/A N/A 61.0
 
Sept. 16, 2020, 2 p.m. 43.9 ppb (41) 21.6 ppb (20) N/A 22.0 ppb (20) N/A 2.0 ppb (3) N/A N/A N/A N/A 41.0
 
Sept. 16, 2020, 1 p.m. 51.2 ppb (47) 29.7 ppb (28) N/A 21.0 ppb (19) N/A 2.0 ppb (3) N/A N/A N/A N/A 47.0
 
Sept. 16, 2020, noon 47.1 ppb (44) 23.1 ppb (21) N/A 24.0 ppb (22) N/A 1.0 ppb (1) N/A N/A N/A N/A 44.0
 
Sept. 16, 2020, 11 a.m. 51.9 ppb (48) 24.8 ppb (23) N/A 27.0 ppb (25) N/A 2.0 ppb (3) N/A N/A N/A N/A 48.0
 
Sept. 16, 2020, 10 a.m. 42.4 ppb (39) 17.9 ppb (17) N/A 24.0 ppb (22) N/A 1.0 ppb (1) N/A N/A N/A N/A 39.0
 
Sept. 16, 2020, 9 a.m. 17.2 ppb (16) 2.3 ppb (2) N/A 15.0 ppb (14) N/A 1.0 ppb (1) N/A N/A N/A N/A 16.0
 
Sept. 16, 2020, 8 a.m. 26.7 ppb (25) 6.0 ppb (6) N/A 20.0 ppb (19) N/A 1.0 ppb (1) N/A N/A N/A N/A 25.0
 
Sept. 16, 2020, 7 a.m. 20.8 ppb (19) 2.5 ppb (2) N/A 18.0 ppb (17) N/A 1.0 ppb (1) N/A N/A N/A N/A 19.0
 
Sept. 16, 2020, 6 a.m. 26.8 ppb (25) 5.3 ppb (5) N/A 21.0 ppb (19) N/A 2.0 ppb (3) N/A N/A N/A N/A 25.0
 
Sept. 16, 2020, 5 a.m. 33.1 ppb (31) 7.3 ppb (7) N/A 26.0 ppb (24) N/A 1.0 ppb (1) N/A N/A N/A N/A 31.0
 
Sept. 16, 2020, 4 a.m. 31.1 ppb (29) 6.0 ppb (6) N/A 25.0 ppb (23) N/A 1.0 ppb (1) N/A N/A N/A N/A 29.0
 
Sept. 16, 2020, 3 a.m. 30.7 ppb (28) 4.5 ppb (4) N/A 26.0 ppb (24) N/A 2.0 ppb (3) N/A N/A N/A N/A 28.0
 
Sept. 16, 2020, 2 a.m. 28.2 ppb (26) 1.7 ppb (2) N/A 26.0 ppb (24) N/A 2.0 ppb (3) N/A N/A N/A N/A 26.0
 
Sept. 16, 2020, 1 a.m. 26.4 ppb (24) 1.6 ppb (1) N/A 25.0 ppb (23) N/A 2.0 ppb (3) N/A N/A N/A N/A 24.0
 
Sept. 16, 2020, midnight 13.5 ppb (12) 1.3 ppb (1) N/A 12.0 ppb (11) N/A 2.0 ppb (3) N/A N/A N/A N/A 12.0
 
Sept. 15, 2020, 11 p.m. 8.2 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 8.0
 
Sept. 15, 2020, 10 p.m. 4.8 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A 2.0 ppb (3) N/A N/A N/A N/A 4.0
 
Sept. 15, 2020, 9 p.m. 5.8 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) N/A N/A N/A N/A 5.0
 
Sept. 15, 2020, 8 p.m. 12.4 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A 2.0 ppb (3) N/A N/A N/A N/A 11.0
 
Sept. 15, 2020, 7 p.m. 14.7 ppb (14) 5.8 ppb (5) N/A 9.0 ppb (8) N/A 2.0 ppb (3) N/A N/A N/A N/A 14.0
 
Sept. 15, 2020, 6 p.m. 14.4 ppb (13) 5.0 ppb (5) N/A 9.0 ppb (8) N/A 2.0 ppb (3) N/A N/A N/A N/A 13.0
 
Sept. 15, 2020, 5 p.m. 11.4 ppb (11) 4.5 ppb (4) N/A 7.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 11.0
 
Sept. 15, 2020, 4 p.m. 18.6 ppb (17) 9.0 ppb (8) N/A 10.0 ppb (9) N/A 2.0 ppb (3) N/A N/A N/A N/A 17.0
 
Sept. 15, 2020, 3 p.m. 28.6 ppb (26) 14.9 ppb (14) N/A 14.0 ppb (13) N/A 2.0 ppb (3) N/A N/A N/A N/A 26.0
 
Sept. 15, 2020, 2 p.m. 30.1 ppb (28) 16.4 ppb (15) N/A 14.0 ppb (13) N/A 3.0 ppb (4) N/A N/A N/A N/A 28.0
 
Sept. 15, 2020, 1 p.m. 16.6 ppb (15) 5.1 ppb (5) N/A 12.0 ppb (11) N/A 2.0 ppb (3) N/A N/A N/A N/A 15.0
 
Sept. 15, 2020, noon 15.7 ppb (15) 3.5 ppb (3) N/A 12.0 ppb (11) N/A 1.0 ppb (1) N/A N/A N/A N/A 15.0
 
Sept. 15, 2020, 11 a.m. 17.2 ppb (16) 3.0 ppb (3) N/A 14.0 ppb (13) N/A 1.0 ppb (1) N/A N/A N/A N/A 16.0
 
Sept. 15, 2020, 10 a.m. 7.9 ppb (7) 0.3 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
Sept. 15, 2020, 9 a.m. 7.4 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
Sept. 15, 2020, 8 a.m. 7.1 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
Sept. 15, 2020, 7 a.m. 5.6 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 15, 2020, 6 a.m. 5.1 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 5.0
 
Sept. 15, 2020, 5 a.m. 6.6 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 15, 2020, 4 a.m. 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 15, 2020, 3 a.m. 6.0 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 15, 2020, 2 a.m. 7.7 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
Sept. 15, 2020, 1 a.m. 4.2 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) N/A N/A N/A N/A 4.0
 
Sept. 15, 2020, midnight 4.7 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A N/A N/A 4.0
 
Sept. 14, 2020, 11 p.m. 2.6 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 14, 2020, 10 p.m. 1.5 ppb (1) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 14, 2020, 9 p.m. 1.5 ppb (1) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 14, 2020, 8 p.m. 2.0 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 14, 2020, 7 p.m. 3.1 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 14, 2020, 6 p.m. 3.3 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 14, 2020, 5 p.m. 3.1 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Sept. 14, 2020, 4 p.m. 6.4 ppb (6) 2.3 ppb (2) N/A 4.0 ppb (4) N/A 2.0 ppb (3) N/A N/A N/A N/A 6.0
 
Sept. 14, 2020, 3 p.m. 7.4 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A 2.0 ppb (3) N/A N/A N/A N/A 7.0
 
Sept. 14, 2020, 2 p.m. 10.4 ppb (10) 4.6 ppb (4) N/A 6.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 10.0
 
Sept. 14, 2020, 1 p.m. 10.5 ppb (10) 4.6 ppb (4) N/A 6.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 10.0
 
Sept. 14, 2020, noon 23.2 ppb (21) 11.8 ppb (11) N/A 11.0 ppb (10) N/A 1.0 ppb (1) N/A N/A N/A N/A 21.0
 
Sept. 14, 2020, 11 a.m. 13.7 ppb (13) 4.5 ppb (4) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A N/A N/A 13.0
 
Sept. 14, 2020, 10 a.m. 6.4 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 14, 2020, 9 a.m. 6.0 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 14, 2020, 8 a.m. 7.0 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 14, 2020, 7 a.m. 4.2 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 4.0
 
Sept. 14, 2020, 6 a.m. 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 4.0
 
Sept. 14, 2020, 5 a.m. 6.5 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 14, 2020, 4 a.m. 6.4 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 14, 2020, 3 a.m. 7.1 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
Sept. 14, 2020, 2 a.m. 9.1 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
Sept. 14, 2020, 1 a.m. 6.6 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
Sept. 14, 2020, midnight 3.4 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 3.0
 
Sept. 13, 2020, 11 p.m. 1.6 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, 10 p.m. 1.5 ppb (1) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, 9 p.m. 1.3 ppb (1) 0.9 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, 8 p.m. 1.8 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 13, 2020, 7 p.m. 1.6 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, 6 p.m. 1.4 ppb (1) 0.9 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, 5 p.m. 1.2 ppb (1) 0.8 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, 4 p.m. 1.0 ppb (1) 0.8 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, 3 p.m. 1.0 ppb (1) 0.7 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, 2 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, 1 p.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Sept. 13, 2020, noon 2.2 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 2.0
 
Sept. 13, 2020, 11 a.m. 3.3 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 3.0
 
Sept. 13, 2020, 10 a.m. 8.5 ppb (8) 4.4 ppb (4) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
Sept. 13, 2020, 9 a.m. 5.8 ppb (5) 3.4 ppb (3) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 5.0
 
Sept. 13, 2020, 8 a.m. 9.5 ppb (9) 5.9 ppb (5) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0
 
Sept. 13, 2020, 7 a.m. 8.5 ppb (8) 4.2 ppb (4) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
Sept. 13, 2020, 6 a.m. 12.3 ppb (11) 7.7 ppb (7) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 11.0
 
Sept. 13, 2020, 5 a.m. 12.1 ppb (11) 6.2 ppb (6) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 11.0
 
Sept. 13, 2020, 4 a.m. 14.7 ppb (14) 7.8 ppb (7) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 14.0
 
Sept. 13, 2020, 3 a.m. 15.1 ppb (14) 8.7 ppb (8) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 14.0
 
Sept. 13, 2020, 2 a.m. 17.6 ppb (16) 10.0 ppb (9) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 16.0
 
Sept. 13, 2020, 1 a.m. 19.6 ppb (18) 11.7 ppb (11) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 18.0
 
Sept. 13, 2020, midnight 18.1 ppb (17) 10.1 ppb (9) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 17.0
 
Sept. 12, 2020, 11 p.m. 19.7 ppb (18) 11.6 ppb (11) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 18.0
 
Sept. 12, 2020, 10 p.m. 10.9 ppb (10) 6.2 ppb (6) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 10.0
 
Sept. 12, 2020, 9 p.m. 10.8 ppb (10) 6.3 ppb (6) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 10.0
 
Sept. 12, 2020, 8 p.m. 15.9 ppb (15) 9.7 ppb (9) N/A 6.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 15.0
 
Sept. 12, 2020, 7 p.m. 11.8 ppb (11) 7.6 ppb (7) N/A 4.0 ppb (4) N/A 2.0 ppb (3) N/A N/A N/A N/A 11.0
 
Sept. 12, 2020, 6 p.m. 15.5 ppb (14) 9.4 ppb (9) N/A 6.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 14.0
 
Sept. 12, 2020, 5 p.m. 14.6 ppb (14) 8.4 ppb (8) N/A 6.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 14.0
 
Sept. 12, 2020, 4 p.m. 14.9 ppb (14) 8.4 ppb (8) N/A 6.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 14.0
 
Sept. 12, 2020, 3 p.m. 3.6 ppb (3) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 3.0