ID: 755

AQSQID: 470090101

Site Name: Look Rock - Gsmnp

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

Updated: April 20, 2021, 9:43 a.m.

Location: Maryville (Look Rock Tower), TN

Reporting: True, Located: True

Current AQI: 3.0

Maryville (Look Rock Tower) TN, US: 35.6322, -83.9422

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 20, 2021, 8 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.4 ppb (3) N/A N/A 0.13 ppb (2) N/A N/A 3.0
 
April 20, 2021, 7 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.4 ppb (3) N/A 50.0 ppb (47) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 47.0
 
April 20, 2021, 6 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 49.0 ppb (46) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 46.0
 
April 20, 2021, 5 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 50.0 ppb (47) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 47.0
 
April 20, 2021, 4 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.5 ppb (3) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 5.0 μg/m3 (21) 47.0
 
April 20, 2021, 3 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.5 ppb (3) N/A 51.0 ppb (48) 0.13 ppb (2) N/A 5.0 μg/m3 (21) 48.0
 
April 20, 2021, 2 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 6.0 μg/m3 (25) 47.0
 
April 20, 2021, 1 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.4 ppb (3) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 5.0 μg/m3 (21) 47.0
 
April 20, 2021, midnight N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.4 ppb (3) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 7.0 μg/m3 (30) 47.0
 
April 19, 2021, 11 p.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.4 ppb (3) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 5.0 μg/m3 (21) 47.0
 
April 19, 2021, 10 p.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 51.0 ppb (48) 0.12 ppb (2) N/A 5.0 μg/m3 (21) 48.0
 
April 19, 2021, 9 p.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.5 ppb (3) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 6.0 μg/m3 (25) 47.0
 
April 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 6.0 μg/m3 (25) 48.0
 
April 19, 2021, 7 p.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 2.9 ppb (3) N/A 51.0 ppb (48) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 48.0
 
April 19, 2021, 6 p.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.8 ppb (3) N/A 51.0 ppb (48) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 48.0
 
April 19, 2021, 5 p.m. N/A 0.1 ppb (1) 3.3 ppb (4) N/A 3.2 ppb (4) N/A 49.0 ppb (46) 0.16 ppb (3) N/A 6.0 μg/m3 (25) 46.0
 
April 19, 2021, 4 p.m. N/A 0.2 ppb (1) 3.6 ppb (4) N/A 3.3 ppb (4) N/A 48.0 ppb (45) 0.16 ppb (3) N/A 7.0 μg/m3 (30) 45.0
 
April 19, 2021, 3 p.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.5 ppb (3) N/A 47.0 ppb (44) 0.15 ppb (2) N/A 8.0 μg/m3 (34) 44.0
 
April 19, 2021, 2 p.m. N/A 0.1 ppb (1) 2.4 ppb (3) N/A 2.3 ppb (3) N/A 44.0 ppb (41) 0.15 ppb (2) N/A 8.0 μg/m3 (34) 41.0
 
April 19, 2021, 1 p.m. N/A 0.2 ppb (1) 2.7 ppb (3) N/A 2.4 ppb (3) N/A 35.0 ppb (33) 0.16 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
April 19, 2021, noon N/A 0.1 ppb (1) 2.6 ppb (3) N/A 2.4 ppb (3) N/A 37.0 ppb (35) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
April 19, 2021, 11 a.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 39.0 ppb (37) 0.15 ppb (2) N/A 8.0 μg/m3 (34) 37.0
 
April 19, 2021, 10 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 35.0 ppb (33) 0.14 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 9 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.7 ppb (3) N/A 39.0 ppb (37) 0.18 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 8 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.7 ppb (3) N/A 45.0 ppb (42) 0.16 ppb (3) N/A 7.0 μg/m3 (30) 42.0
 
April 19, 2021, 7 a.m. N/A 0.0 ppb (0) 3.3 ppb (4) N/A 3.3 ppb (4) N/A 42.0 ppb (39) 0.18 ppb (3) N/A 8.0 μg/m3 (34) 39.0
 
April 19, 2021, 6 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 41.0 ppb (38) 0.17 ppb (3) N/A 8.0 μg/m3 (34) 38.0
 
April 19, 2021, 5 a.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 47.0 ppb (44) 0.14 ppb (2) N/A 8.0 μg/m3 (34) 44.0
 
April 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 6.0 μg/m3 (25) 49.0
 
April 19, 2021, 3 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.8 ppb (3) N/A 51.0 ppb (48) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 48.0
 
April 19, 2021, 2 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.8 ppb (3) N/A 52.0 ppb (49) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 49.0
 
April 19, 2021, 1 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.9 ppb (3) N/A 51.0 ppb (48) 0.13 ppb (2) N/A 7.0 μg/m3 (30) 48.0
 
April 19, 2021, midnight N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.6 ppb (3) N/A 51.0 ppb (48) 0.13 ppb (2) N/A 6.0 μg/m3 (25) 48.0
 
April 18, 2021, 11 p.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 51.0 ppb (48) 0.12 ppb (2) N/A 5.0 μg/m3 (21) 48.0
 
April 18, 2021, 10 p.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.4 ppb (3) N/A 51.0 ppb (48) 0.12 ppb (2) N/A 5.0 μg/m3 (21) 48.0
 
April 18, 2021, 9 p.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 50.0 ppb (47) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 47.0
 
April 18, 2021, 8 p.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.4 ppb (3) N/A 49.0 ppb (46) 0.13 ppb (2) N/A 3.0 μg/m3 (13) 46.0
 
April 18, 2021, 7 p.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.6 ppb (3) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 47.0
 
April 18, 2021, 6 p.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.7 ppb (3) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 2.0 μg/m3 (9) 47.0
 
April 18, 2021, 5 p.m. N/A 0.0 ppb (0) 3.2 ppb (4) N/A 3.1 ppb (3) N/A 47.0 ppb (44) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 44.0
 
April 18, 2021, 4 p.m. N/A 0.0 ppb (0) 3.3 ppb (4) N/A 3.2 ppb (4) N/A 46.0 ppb (43) 0.16 ppb (3) N/A 6.0 μg/m3 (25) 43.0
 
April 18, 2021, 3 p.m. N/A 0.0 ppb (0) 3.5 ppb (4) N/A 3.4 ppb (4) N/A 45.0 ppb (42) 0.15 ppb (2) N/A 8.0 μg/m3 (34) 42.0
 
April 18, 2021, 2 p.m. N/A 0.0 ppb (0) 3.4 ppb (4) N/A 3.3 ppb (4) N/A 44.0 ppb (41) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 41.0
 
April 18, 2021, 1 p.m. N/A 0.0 ppb (0) 3.5 ppb (4) N/A 3.4 ppb (4) N/A 43.0 ppb (40) 0.16 ppb (3) N/A 8.0 μg/m3 (34) 40.0
 
April 18, 2021, noon N/A 0.0 ppb (0) 3.3 ppb (4) N/A 3.3 ppb (4) N/A 45.0 ppb (42) 0.14 ppb (2) N/A 8.0 μg/m3 (34) 42.0
 
April 18, 2021, 11 a.m. N/A 0.0 ppb (0) 3.8 ppb (4) N/A 3.8 ppb (4) N/A 44.0 ppb (41) 0.15 ppb (2) N/A 8.0 μg/m3 (34) 41.0
 
April 18, 2021, 10 a.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A 3.1 ppb (3) N/A 45.0 ppb (42) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 42.0
 
April 18, 2021, 9 a.m. N/A 0.0 ppb (0) 3.5 ppb (4) N/A 3.5 ppb (4) N/A 43.0 ppb (40) 0.15 ppb (2) N/A 7.0 μg/m3 (30) 40.0
 
April 18, 2021, 8 a.m. N/A 0.0 ppb (0) 3.2 ppb (4) N/A 3.2 ppb (4) N/A 43.0 ppb (40) 0.14 ppb (2) N/A 8.0 μg/m3 (34) 40.0
 
April 18, 2021, 7 a.m. N/A 0.0 ppb (0) 3.5 ppb (4) N/A 3.5 ppb (4) N/A 45.0 ppb (42) 0.14 ppb (2) N/A 8.0 μg/m3 (34) 42.0
 
April 18, 2021, 6 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 44.0 ppb (41) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 41.0
 
April 18, 2021, 5 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.8 ppb (3) N/A 43.0 ppb (40) 0.15 ppb (2) N/A 7.0 μg/m3 (30) 40.0
 
April 18, 2021, 4 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.9 ppb (3) N/A 42.0 ppb (39) 0.16 ppb (3) N/A 8.0 μg/m3 (34) 39.0
 
April 18, 2021, 3 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.7 ppb (3) N/A 42.0 ppb (39) 0.16 ppb (3) N/A 8.0 μg/m3 (34) 39.0
 
April 18, 2021, 2 a.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.6 ppb (3) N/A 43.0 ppb (40) 0.15 ppb (2) N/A 7.0 μg/m3 (30) 40.0
 
April 18, 2021, 1 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.7 ppb (3) N/A 43.0 ppb (40) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 40.0
 
April 18, 2021, midnight N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 47.0 ppb (44) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 44.0
 
April 17, 2021, 11 p.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 47.0 ppb (44) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 44.0
 
April 17, 2021, 10 p.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 49.0 ppb (46) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 46.0
 
April 17, 2021, 9 p.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 2.9 ppb (3) N/A 50.0 ppb (47) 0.15 ppb (2) N/A 8.0 μg/m3 (34) 47.0
 
April 17, 2021, 8 p.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A 3.1 ppb (3) N/A 51.0 ppb (48) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 48.0
 
April 17, 2021, 7 p.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A 3.0 ppb (3) N/A 50.0 ppb (47) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 47.0
 
April 17, 2021, 6 p.m. N/A 0.1 ppb (1) 3.0 ppb (3) N/A 2.9 ppb (3) N/A 46.0 ppb (43) 0.15 ppb (2) N/A 7.0 μg/m3 (30) 43.0
 
April 17, 2021, 5 p.m. N/A 0.3 ppb (1) 3.7 ppb (4) N/A 3.4 ppb (4) N/A 44.0 ppb (41) 0.18 ppb (3) N/A 8.0 μg/m3 (34) 41.0
 
April 17, 2021, 4 p.m. N/A 0.2 ppb (1) 2.6 ppb (3) N/A 2.4 ppb (3) N/A 37.0 ppb (35) 0.18 ppb (3) N/A 8.0 μg/m3 (34) 35.0
 
April 17, 2021, 3 p.m. N/A 0.1 ppb (1) 1.9 ppb (2) N/A 1.8 ppb (2) N/A 31.0 ppb (29) 0.17 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
April 17, 2021, 2 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 40.0 ppb (38) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
April 17, 2021, 1 p.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.5 ppb (3) N/A 46.0 ppb (43) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 43.0
 
April 17, 2021, noon N/A 0.0 ppb (0) 2.2 ppb (3) N/A 2.2 ppb (3) N/A 45.0 ppb (42) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 42.0
 
April 17, 2021, 11 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.4 ppb (3) N/A 45.0 ppb (42) 0.15 ppb (2) N/A 7.0 μg/m3 (30) 42.0
 
April 17, 2021, 10 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 45.0 ppb (42) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 42.0
 
April 17, 2021, 9 a.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 46.0 ppb (43) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 43.0
 
April 17, 2021, 8 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.7 ppb (3) N/A 46.0 ppb (43) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 43.0
 
April 17, 2021, 7 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 47.0 ppb (44) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 44.0
 
April 17, 2021, 6 a.m. N/A 0.0 ppb (0) 3.5 ppb (4) N/A 3.5 ppb (4) N/A 47.0 ppb (44) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 44.0
 
April 17, 2021, 5 a.m. N/A 0.0 ppb (0) 4.3 ppb (5) N/A 4.3 ppb (5) N/A 47.0 ppb (44) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 44.0
 
April 17, 2021, 4 a.m. N/A 0.0 ppb (0) 4.6 ppb (5) N/A 4.7 ppb (5) N/A 49.0 ppb (46) 0.16 ppb (3) N/A 7.0 μg/m3 (30) 46.0
 
April 17, 2021, 3 a.m. N/A 0.0 ppb (0) 3.8 ppb (4) N/A 3.8 ppb (4) N/A 51.0 ppb (48) 0.15 ppb (2) N/A 7.0 μg/m3 (30) 48.0
 
April 17, 2021, 2 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 6.0 μg/m3 (25) 47.0
 
April 17, 2021, 1 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 50.0 ppb (47) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 47.0
 
April 17, 2021, midnight N/A 0.0 ppb (0) 3.8 ppb (4) N/A 3.8 ppb (4) N/A 51.0 ppb (48) 0.15 ppb (2) N/A 7.0 μg/m3 (30) 48.0
 
April 16, 2021, 11 p.m. N/A 0.0 ppb (0) 4.2 ppb (4) N/A 4.2 ppb (4) N/A 51.0 ppb (48) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 48.0
 
April 16, 2021, 10 p.m. N/A 0.0 ppb (0) 4.0 ppb (4) N/A 3.9 ppb (4) N/A 51.0 ppb (48) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 48.0
 
April 16, 2021, 9 p.m. N/A 0.1 ppb (1) 3.7 ppb (4) N/A 3.5 ppb (4) N/A 50.0 ppb (47) 0.13 ppb (2) N/A 7.0 μg/m3 (30) 47.0
 
April 16, 2021, 8 p.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 47.0 ppb (44) 0.12 ppb (2) N/A 4.0 μg/m3 (17) 44.0
 
April 16, 2021, 7 p.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A 2.0 ppb (2) N/A 45.0 ppb (42) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 42.0
 
April 16, 2021, 6 p.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A 2.0 ppb (2) N/A 43.0 ppb (40) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 40.0
 
April 16, 2021, 5 p.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.4 ppb (3) N/A 42.0 ppb (39) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 39.0
 
April 16, 2021, 4 p.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.3 ppb (3) N/A 40.0 ppb (38) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 38.0
 
April 16, 2021, 3 p.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.3 ppb (3) N/A 39.0 ppb (37) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 37.0
 
April 16, 2021, 2 p.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.4 ppb (3) N/A 38.0 ppb (36) 0.12 ppb (2) N/A 5.0 μg/m3 (21) 36.0
 
April 16, 2021, 1 p.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.3 ppb (3) N/A 37.0 ppb (35) 0.12 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
April 16, 2021, noon N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 36.0 ppb (34) 0.11 ppb (2) N/A 4.0 μg/m3 (17) 34.0
 
April 16, 2021, 11 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 36.0 ppb (34) 0.12 ppb (2) N/A 4.0 μg/m3 (17) 34.0
 
April 16, 2021, 10 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 36.0 ppb (34) 0.12 ppb (2) N/A 5.0 μg/m3 (21) 34.0
 
April 16, 2021, 9 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 36.0 ppb (34) 0.12 ppb (2) N/A 4.0 μg/m3 (17) 34.0
 
April 16, 2021, 8 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 37.0 ppb (35) 0.11 ppb (2) N/A 3.0 μg/m3 (13) 35.0
 
April 16, 2021, 7 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 36.0 ppb (34) 0.12 ppb (2) N/A 4.0 μg/m3 (17) 34.0
 
April 16, 2021, 6 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) N/A 37.0 ppb (35) 0.12 ppb (2) N/A 4.0 μg/m3 (17) 35.0
 
April 16, 2021, 5 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 38.0 ppb (36) 0.11 ppb (2) N/A 4.0 μg/m3 (17) 36.0
 
April 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 5.0 μg/m3 (21) 36.0
 
April 16, 2021, 3 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 38.0 ppb (36) 0.12 ppb (2) N/A 3.0 μg/m3 (13) 36.0
 
April 16, 2021, 2 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.4 ppb (3) N/A 37.0 ppb (35) 0.12 ppb (2) N/A 3.0 μg/m3 (13) 35.0
 
April 16, 2021, 1 a.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.6 ppb (3) N/A 38.0 ppb (36) 0.12 ppb (2) N/A 4.0 μg/m3 (17) 36.0
 
April 16, 2021, midnight N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 40.0 ppb (38) 0.12 ppb (2) N/A 3.0 μg/m3 (13) 38.0
 
April 15, 2021, 11 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 43.0 ppb (40) 0.11 ppb (2) N/A 2.0 μg/m3 (9) 40.0
 
April 15, 2021, 10 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.6 ppb (2) N/A 44.0 ppb (41) 0.11 ppb (2) N/A 2.0 μg/m3 (9) 41.0
 
April 15, 2021, 9 p.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A 2.0 ppb (2) N/A 45.0 ppb (42) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 42.0
 
April 15, 2021, 8 p.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.3 ppb (3) N/A 47.0 ppb (44) 0.13 ppb (2) N/A 5.0 μg/m3 (21) 44.0
 
April 15, 2021, 7 p.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.2 ppb (3) N/A 46.0 ppb (43) 0.12 ppb (2) N/A 3.0 μg/m3 (13) 43.0
 
April 15, 2021, 6 p.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.4 ppb (3) N/A 45.0 ppb (42) 0.12 ppb (2) N/A 5.0 μg/m3 (21) 42.0
 
April 15, 2021, 5 p.m. N/A 0.4 ppb (1) 4.5 ppb (5) N/A 4.0 ppb (4) N/A 46.0 ppb (43) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 43.0
 
April 15, 2021, 4 p.m. N/A 0.3 ppb (1) 4.5 ppb (5) N/A 4.2 ppb (4) N/A 44.0 ppb (41) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 41.0
 
April 15, 2021, 3 p.m. N/A 0.3 ppb (1) 3.8 ppb (4) N/A 3.5 ppb (4) N/A 40.0 ppb (38) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 38.0
 
April 15, 2021, 2 p.m. N/A 0.2 ppb (1) 2.9 ppb (3) N/A 2.7 ppb (3) N/A 38.0 ppb (36) 0.13 ppb (2) N/A 6.0 μg/m3 (25) 36.0
 
April 15, 2021, 1 p.m. N/A 0.1 ppb (1) 2.7 ppb (3) N/A 2.6 ppb (3) N/A 38.0 ppb (36) 0.16 ppb (3) N/A 7.0 μg/m3 (30) 36.0
 
April 15, 2021, noon N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.4 ppb (3) N/A 39.0 ppb (37) N/A N/A 15.0 μg/m3 (58) 58.0
 
April 15, 2021, 11 a.m. N/A 0.0 ppb (0) 3.3 ppb (4) N/A 3.3 ppb (4) N/A 41.0 ppb (38) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 38.0
 
April 15, 2021, 10 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 42.0 ppb (39) 0.14 ppb (2) N/A 2.0 μg/m3 (9) 39.0
 
April 15, 2021, 9 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A 2.1 ppb (2) N/A 40.0 ppb (38) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 38.0
 
April 15, 2021, 8 a.m. N/A 0.0 ppb (0) 2.2 ppb (3) N/A 2.2 ppb (3) N/A 40.0 ppb (38) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 38.0
 
April 15, 2021, 7 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.5 ppb (2) N/A 35.0 ppb (33) 0.16 ppb (3) N/A 3.0 μg/m3 (13) 33.0
 
April 15, 2021, 6 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.5 ppb (2) N/A 36.0 ppb (34) 0.15 ppb (2) N/A 2.0 μg/m3 (9) 34.0
 
April 15, 2021, 5 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.5 ppb (2) N/A 38.0 ppb (36) 0.15 ppb (2) N/A 1.0 μg/m3 (5) 36.0
 
April 15, 2021, 4 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.7 ppb (2) N/A 40.0 ppb (38) 0.16 ppb (3) N/A 3.0 μg/m3 (13) 38.0
 
April 15, 2021, 3 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.7 ppb (2) N/A 45.0 ppb (42) 0.15 ppb (2) N/A 2.0 μg/m3 (9) 42.0
 
April 15, 2021, 2 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.2 ppb (2) N/A 47.0 ppb (44) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 44.0
 
April 15, 2021, 1 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 48.0 ppb (45) 0.16 ppb (3) N/A 3.0 μg/m3 (13) 45.0
 
April 15, 2021, midnight N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.6 ppb (2) N/A 45.0 ppb (42) 0.16 ppb (3) N/A 1.0 μg/m3 (5) 42.0
 
April 14, 2021, 11 p.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) N/A 45.0 ppb (42) 0.16 ppb (3) N/A 7.0 μg/m3 (30) 42.0
 
April 14, 2021, 10 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 52.0 ppb (49) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 49.0
 
April 14, 2021, 9 p.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.6 ppb (3) N/A 56.0 ppb (55) 0.17 ppb (3) N/A 13.0 μg/m3 (53) 55.0
 
April 14, 2021, 8 p.m. N/A 0.0 ppb (0) 2.2 ppb (3) N/A 2.2 ppb (3) N/A 54.0 ppb (50) 0.16 ppb (3) N/A 11.0 μg/m3 (46) 50.0
 
April 14, 2021, 7 p.m. N/A 0.0 ppb (0) 2.2 ppb (3) N/A 2.2 ppb (3) N/A 55.0 ppb (51) 0.16 ppb (3) N/A 7.0 μg/m3 (30) 51.0
 
April 14, 2021, 6 p.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) N/A 56.0 ppb (55) 0.16 ppb (3) N/A 8.0 μg/m3 (34) 55.0
 
April 14, 2021, 5 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 53.0 ppb (50) 0.18 ppb (3) N/A 9.0 μg/m3 (38) 50.0
 
April 14, 2021, 4 p.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.8 ppb (2) N/A 49.0 ppb (46) N/A N/A 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 3 p.m. N/A 20.1 ppb (19) 22.0 ppb (21) N/A 1.8 ppb (2) N/A 44.0 ppb (41) 0.36 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
April 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 1 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 48.0 ppb (45) 0.16 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
April 14, 2021, noon N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) N/A 51.0 ppb (48) 0.15 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 11 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) N/A 51.0 ppb (48) 0.16 ppb (3) N/A 11.0 μg/m3 (46) 48.0
 
April 14, 2021, 10 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) N/A 52.0 ppb (49) 0.15 ppb (2) N/A 11.0 μg/m3 (46) 49.0
 
April 14, 2021, 9 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 52.0 ppb (49) 0.16 ppb (3) N/A 11.0 μg/m3 (46) 49.0
 
April 14, 2021, 8 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 54.0 ppb (50) 0.14 ppb (2) N/A 10.0 μg/m3 (42) 50.0
 
April 14, 2021, 7 a.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 58.0 ppb (61) 0.16 ppb (3) N/A 11.0 μg/m3 (46) 61.0
 
April 14, 2021, 6 a.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.6 ppb (3) N/A 59.0 ppb (65) 0.15 ppb (2) N/A 10.0 μg/m3 (42) 65.0
 
April 14, 2021, 5 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.7 ppb (3) N/A 61.0 ppb (71) 0.16 ppb (3) N/A 7.0 μg/m3 (30) 71.0
 
April 14, 2021, 4 a.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.6 ppb (3) N/A 59.0 ppb (65) 0.16 ppb (3) N/A 8.0 μg/m3 (34) 65.0
 
April 14, 2021, 3 a.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.6 ppb (3) N/A 59.0 ppb (65) 0.15 ppb (2) N/A 8.0 μg/m3 (34) 65.0
 
April 14, 2021, 2 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.4 ppb (3) N/A 56.0 ppb (55) 0.16 ppb (3) N/A 9.0 μg/m3 (38) 55.0
 
April 14, 2021, 1 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.9 ppb (3) N/A 58.0 ppb (61) 0.18 ppb (3) N/A 9.0 μg/m3 (38) 61.0
 
April 14, 2021, midnight N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.9 ppb (3) N/A 58.0 ppb (61) 0.2 ppb (3) N/A 11.0 μg/m3 (46) 61.0
 
April 13, 2021, 11 p.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 57.0 ppb (58) 0.18 ppb (3) N/A 8.0 μg/m3 (34) 58.0
 
April 13, 2021, 10 p.m. N/A 0.0 ppb (0) 3.4 ppb (4) N/A 3.4 ppb (4) N/A 55.0 ppb (51) 0.18 ppb (3) N/A 8.0 μg/m3 (34) 51.0
 
April 13, 2021, 9 p.m. N/A 0.0 ppb (0) 3.6 ppb (4) N/A 3.6 ppb (4) N/A 55.0 ppb (51) 0.19 ppb (3) N/A 11.0 μg/m3 (46) 51.0
 
April 13, 2021, 8 p.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 2.9 ppb (3) N/A 58.0 ppb (61) 0.16 ppb (3) N/A 9.0 μg/m3 (38) 61.0
 
April 13, 2021, 7 p.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.7 ppb (3) N/A 57.0 ppb (58) 0.16 ppb (3) N/A 6.0 μg/m3 (25) 58.0
 
April 13, 2021, 6 p.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.7 ppb (3) N/A 53.0 ppb (50) 0.16 ppb (3) N/A 6.0 μg/m3 (25) 50.0
 
April 13, 2021, 5 p.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 2.9 ppb (3) N/A 52.0 ppb (49) 0.17 ppb (3) N/A 10.0 μg/m3 (42) 49.0
 
April 13, 2021, 4 p.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.8 ppb (3) N/A 52.0 ppb (49) 0.16 ppb (3) N/A 7.0 μg/m3 (30) 49.0
 
April 13, 2021, 3 p.m. N/A 0.0 ppb (0) 2.2 ppb (3) N/A 2.1 ppb (2) N/A N/A 0.15 ppb (2) N/A 8.0 μg/m3 (34) 34.0
 
April 13, 2021, 2 p.m. N/A 0.0 ppb (0) 2.2 ppb (3) N/A 2.1 ppb (2) N/A 47.0 ppb (44) 0.14 ppb (2) N/A 10.0 μg/m3 (42) 44.0
 
April 13, 2021, 1 p.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A 3.0 ppb (3) N/A 54.0 ppb (50) 0.14 ppb (2) N/A 10.0 μg/m3 (42) 50.0
 
April 13, 2021, noon N/A 0.0 ppb (0) 3.2 ppb (4) N/A 3.2 ppb (4) N/A 57.0 ppb (58) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 58.0
 
April 13, 2021, 11 a.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A 3.1 ppb (3) N/A 58.0 ppb (61) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 61.0
 
April 13, 2021, 10 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.9 ppb (3) N/A 57.0 ppb (58) 0.13 ppb (2) N/A 6.0 μg/m3 (25) 58.0
 
April 13, 2021, 9 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 57.0 ppb (58) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 58.0