ID: 755

AQSQID: 470090101

Site Name: Look Rock - Gsmnp

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

Updated: July 28, 2021, 7:53 p.m.

Location: Maryville (Look Rock Tower), TN

Reporting: True, Located: True

Current AQI: 55.0

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
July 28, 2021, 6 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) N/A 53.0 ppb (50) 0.18 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 28, 2021, 5 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 46.0 ppb (43) 0.2 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
July 28, 2021, 4 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.6 ppb (2) N/A 49.0 ppb (46) 0.2 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 3 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) N/A 40.0 ppb (38) 0.21 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 2 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 34.0 ppb (32) 0.19 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
July 28, 2021, 1 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) N/A 38.0 ppb (36) 0.2 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, noon N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 37.0 ppb (35) 0.2 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
July 28, 2021, 11 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 42.0 ppb (39) 0.19 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 28, 2021, 10 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 42.0 ppb (39) 0.19 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 28, 2021, 9 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.2 ppb (2) N/A 42.0 ppb (39) 0.19 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 8 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.2 ppb (2) N/A 43.0 ppb (40) 0.17 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 7 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.2 ppb (2) N/A 43.0 ppb (40) 0.19 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 6 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.2 ppb (2) N/A 43.0 ppb (40) 0.18 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 28, 2021, 5 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) N/A 41.0 ppb (38) 0.2 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 28, 2021, 4 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) N/A 41.0 ppb (38) 0.2 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
July 28, 2021, 3 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.2 ppb (2) N/A 44.0 ppb (41) 0.19 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 2 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 46.0 ppb (43) 0.18 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 28, 2021, 1 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.5 ppb (2) N/A 49.0 ppb (46) 0.19 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
July 28, 2021, midnight N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 56.0 ppb (55) 0.19 ppb (3) N/A 12.0 μg/m3 (50) 55.0
 
July 27, 2021, 11 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 65.0 ppb (84) 0.18 ppb (3) N/A 10.0 μg/m3 (42) 84.0
 
July 27, 2021, 10 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 64.0 ppb (81) 0.17 ppb (3) N/A 10.0 μg/m3 (42) 81.0
 
July 27, 2021, 9 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 61.0 ppb (71) 0.17 ppb (3) N/A 9.0 μg/m3 (38) 71.0
 
July 27, 2021, 8 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 61.0 ppb (71) 0.19 ppb (3) N/A 9.0 μg/m3 (38) 71.0
 
July 27, 2021, 7 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 60.0 ppb (68) 0.2 ppb (3) N/A 9.0 μg/m3 (38) 68.0
 
July 27, 2021, 6 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A N/A 0.22 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 27, 2021, 5 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 47.0 ppb (44) 0.24 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
July 27, 2021, 4 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.6 ppb (2) N/A 41.0 ppb (38) 0.22 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 27, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 27, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 27, 2021, 1 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) N/A 26.0 ppb (25) 0.19 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
July 27, 2021, noon N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) N/A 36.0 ppb (34) 0.18 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 27, 2021, 11 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) N/A 39.0 ppb (37) 0.18 ppb (3) N/A 7.0 μg/m3 (30) 37.0
 
July 27, 2021, 10 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) N/A 41.0 ppb (38) 0.17 ppb (3) N/A 7.0 μg/m3 (30) 38.0
 
July 27, 2021, 9 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) N/A 42.0 ppb (39) 0.18 ppb (3) N/A 7.0 μg/m3 (30) 39.0
 
July 27, 2021, 8 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 43.0 ppb (40) 0.17 ppb (3) N/A 7.0 μg/m3 (30) 40.0
 
July 27, 2021, 7 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.4 ppb (2) N/A 42.0 ppb (39) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 39.0
 
July 27, 2021, 6 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 44.0 ppb (41) 0.19 ppb (3) N/A 8.0 μg/m3 (34) 41.0
 
July 27, 2021, 5 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 45.0 ppb (42) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 42.0
 
July 27, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 27, 2021, 3 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 48.0 ppb (45) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 45.0
 
July 27, 2021, 2 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 45.0 ppb (42) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 42.0
 
July 27, 2021, 1 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 45.0 ppb (42) 0.2 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 27, 2021, midnight N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 42.0 ppb (39) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 39.0
 
July 26, 2021, 11 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.1 ppb (2) N/A 49.0 ppb (46) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 46.0
 
July 26, 2021, 10 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 47.0 ppb (44) 0.18 ppb (3) N/A 7.0 μg/m3 (30) 44.0
 
July 26, 2021, 9 p.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.2 ppb (2) N/A 44.0 ppb (41) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 41.0
 
July 26, 2021, 8 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 47.0 ppb (44) 0.19 ppb (3) N/A 7.0 μg/m3 (30) 44.0
 
July 26, 2021, 7 p.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.4 ppb (2) N/A 43.0 ppb (40) 0.23 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 26, 2021, 6 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 39.0 ppb (37) 0.22 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
July 26, 2021, 5 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 37.0 ppb (35) 0.23 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 26, 2021, 4 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) N/A 30.0 ppb (28) 0.23 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
July 26, 2021, 3 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) N/A 28.0 ppb (26) 0.23 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
July 26, 2021, 2 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) N/A 27.0 ppb (25) 0.23 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
July 26, 2021, 1 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.5 ppb (1) N/A 28.0 ppb (26) 0.24 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
July 26, 2021, noon N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) N/A 33.0 ppb (31) 0.24 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
July 26, 2021, 11 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) N/A 36.0 ppb (34) 0.24 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
July 26, 2021, 10 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) N/A 40.0 ppb (38) 0.22 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 26, 2021, 9 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) N/A 38.0 ppb (36) 0.23 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 26, 2021, 8 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) N/A 39.0 ppb (37) 0.22 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 26, 2021, 7 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) N/A 39.0 ppb (37) 0.23 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 26, 2021, 6 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) N/A 39.0 ppb (37) 0.22 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
July 26, 2021, 5 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) N/A 34.0 ppb (32) 0.26 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 26, 2021, 4 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) N/A 31.0 ppb (29) 0.26 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
July 26, 2021, 3 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) N/A 34.0 ppb (32) 0.25 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
July 26, 2021, 2 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) N/A 40.0 ppb (38) 0.22 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 26, 2021, 1 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) N/A 35.0 ppb (33) 0.25 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 26, 2021, midnight N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.6 ppb (1) N/A 38.0 ppb (36) 0.25 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
July 25, 2021, 11 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.6 ppb (1) N/A 34.0 ppb (32) 0.26 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
July 25, 2021, 10 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) N/A 34.0 ppb (32) 0.25 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
July 25, 2021, 9 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 0.9 ppb (1) N/A 37.0 ppb (35) 0.27 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
July 25, 2021, 8 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 41.0 ppb (38) 0.28 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
July 25, 2021, 7 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 39.0 ppb (37) 0.29 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
July 25, 2021, 6 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 38.0 ppb (36) 0.28 ppb (4) N/A 23.0 μg/m3 (74) 74.0
 
July 25, 2021, 5 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.0 ppb (1) N/A 38.0 ppb (36) 0.3 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
July 25, 2021, 4 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 35.0 ppb (33) 0.3 ppb (4) N/A 24.0 μg/m3 (77) 77.0
 
July 25, 2021, 3 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 31.0 ppb (29) 0.3 ppb (4) N/A 26.0 μg/m3 (81) 81.0
 
July 25, 2021, 2 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 32.0 ppb (30) 0.29 ppb (4) N/A 24.0 μg/m3 (77) 77.0
 
July 25, 2021, 1 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 36.0 ppb (34) 0.29 ppb (4) N/A 26.0 μg/m3 (81) 81.0
 
July 25, 2021, noon N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 39.0 ppb (37) 0.27 ppb (4) N/A 24.0 μg/m3 (77) 77.0
 
July 25, 2021, 11 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 43.0 ppb (40) 0.29 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 25, 2021, 10 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 44.0 ppb (41) 0.28 ppb (4) N/A 26.0 μg/m3 (81) 81.0
 
July 25, 2021, 9 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 44.0 ppb (41) 0.29 ppb (4) N/A 26.0 μg/m3 (81) 81.0
 
July 25, 2021, 8 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 45.0 ppb (42) 0.27 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 25, 2021, 7 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 50.0 ppb (47) 0.28 ppb (4) N/A 23.0 μg/m3 (74) 74.0
 
July 25, 2021, 6 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.2 ppb (2) N/A 52.0 ppb (49) 0.27 ppb (4) N/A 23.0 μg/m3 (74) 74.0
 
July 25, 2021, 5 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.4 ppb (2) N/A 52.0 ppb (49) 0.29 ppb (4) N/A 24.0 μg/m3 (77) 77.0
 
July 25, 2021, 4 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) N/A 54.0 ppb (50) 0.29 ppb (4) N/A 24.0 μg/m3 (77) 77.0
 
July 25, 2021, 3 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 54.0 ppb (50) 0.3 ppb (4) N/A 24.0 μg/m3 (77) 77.0
 
July 25, 2021, 2 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.2 ppb (2) N/A 53.0 ppb (50) 0.29 ppb (4) N/A 26.0 μg/m3 (81) 81.0
 
July 25, 2021, 1 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 57.0 ppb (58) 0.3 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 25, 2021, midnight N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 56.0 ppb (55) 0.3 ppb (4) N/A 23.0 μg/m3 (74) 74.0
 
July 24, 2021, 11 p.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.5 ppb (2) N/A 50.0 ppb (47) 0.3 ppb (4) N/A N/A 47.0
 
July 24, 2021, 10 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.6 ppb (2) N/A 54.0 ppb (50) 0.28 ppb (4) N/A N/A 50.0
 
July 24, 2021, 9 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 57.0 ppb (58) 0.28 ppb (4) N/A N/A 58.0
 
July 24, 2021, 8 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 56.0 ppb (55) 0.28 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 24, 2021, 7 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 57.0 ppb (58) 0.29 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 24, 2021, 6 p.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.5 ppb (2) N/A 52.0 ppb (49) 0.28 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 24, 2021, 5 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 45.0 ppb (42) 0.28 ppb (4) N/A 24.0 μg/m3 (77) 77.0
 
July 24, 2021, 4 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 39.0 ppb (37) 0.28 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
July 24, 2021, 3 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 31.0 ppb (29) 0.27 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
July 24, 2021, 2 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 29.0 ppb (27) 0.26 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
July 24, 2021, 1 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.2 ppb (2) N/A 34.0 ppb (32) 0.26 ppb (4) N/A 20.0 μg/m3 (68) 68.0
 
July 24, 2021, noon N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.1 ppb (2) N/A 39.0 ppb (37) 0.26 ppb (4) N/A N/A 37.0
 
July 24, 2021, 11 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 46.0 ppb (43) 0.27 ppb (4) N/A 27.0 μg/m3 (83) 83.0
 
July 24, 2021, 10 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.2 ppb (2) N/A 47.0 ppb (44) 0.26 ppb (4) N/A 27.0 μg/m3 (83) 83.0
 
July 24, 2021, 9 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.1 ppb (2) N/A 45.0 ppb (42) 0.27 ppb (4) N/A 27.0 μg/m3 (83) 83.0
 
July 24, 2021, 8 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 48.0 ppb (45) 0.25 ppb (3) N/A 25.0 μg/m3 (79) 79.0
 
July 24, 2021, 7 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 55.0 ppb (51) 0.28 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 24, 2021, 6 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.9 ppb (2) N/A 62.0 ppb (74) 0.28 ppb (4) N/A 24.0 μg/m3 (77) 77.0
 
July 24, 2021, 5 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 59.0 ppb (65) 0.29 ppb (4) N/A 26.0 μg/m3 (81) 81.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 25.0 μg/m3 (79) 79.0
 
July 24, 2021, 3 a.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.6 ppb (3) N/A 63.0 ppb (78) 0.3 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 24, 2021, 2 a.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.6 ppb (3) N/A 68.0 ppb (94) 0.3 ppb (4) N/A 27.0 μg/m3 (83) 94.0
 
July 24, 2021, 1 a.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A 3.1 ppb (3) N/A 72.0 ppb (102) 0.31 ppb (4) N/A 26.0 μg/m3 (81) 102.0
 
July 24, 2021, midnight N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 67.0 ppb (91) 0.3 ppb (4) N/A 25.0 μg/m3 (79) 91.0
 
July 23, 2021, 11 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.6 ppb (2) N/A 58.0 ppb (61) 0.28 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
July 23, 2021, 10 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.6 ppb (2) N/A 59.0 ppb (65) 0.27 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
July 23, 2021, 9 p.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.2 ppb (3) N/A 62.0 ppb (74) 0.29 ppb (4) N/A 22.0 μg/m3 (72) 74.0
 
July 23, 2021, 8 p.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 66.0 ppb (87) 0.29 ppb (4) N/A 24.0 μg/m3 (77) 87.0
 
July 23, 2021, 7 p.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) N/A 57.0 ppb (58) 0.28 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
July 23, 2021, 6 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 46.0 ppb (43) 0.28 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
July 23, 2021, 5 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 39.0 ppb (37) 0.3 ppb (4) N/A 30.0 μg/m3 (89) 89.0
 
July 23, 2021, 4 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 37.0 ppb (35) 0.3 ppb (4) N/A 23.0 μg/m3 (74) 74.0
 
July 23, 2021, 3 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 24.0 ppb (23) 0.31 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 23, 2021, 2 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 30.0 ppb (28) 0.29 ppb (4) N/A 30.0 μg/m3 (89) 89.0
 
July 23, 2021, 1 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 37.0 ppb (35) 0.28 ppb (4) N/A 33.0 μg/m3 (95) 95.0
 
July 23, 2021, noon N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.5 ppb (2) N/A 50.0 ppb (47) 0.26 ppb (4) N/A 30.0 μg/m3 (89) 89.0
 
July 23, 2021, 11 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.7 ppb (2) N/A 50.0 ppb (47) 0.27 ppb (4) N/A 28.0 μg/m3 (85) 85.0
 
July 23, 2021, 10 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.7 ppb (2) N/A 48.0 ppb (45) 0.26 ppb (4) N/A 27.0 μg/m3 (83) 83.0
 
July 23, 2021, 9 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.8 ppb (2) N/A 52.0 ppb (49) 0.28 ppb (4) N/A 27.0 μg/m3 (83) 83.0
 
July 23, 2021, 8 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.5 ppb (2) N/A 50.0 ppb (47) 0.26 ppb (4) N/A 23.0 μg/m3 (74) 74.0
 
July 23, 2021, 7 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 43.0 ppb (40) 0.28 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
July 23, 2021, 2 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.6 ppb (2) N/A 45.0 ppb (42) 0.28 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
July 23, 2021, 1 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 51.0 ppb (48) 0.3 ppb (4) N/A 23.0 μg/m3 (74) 74.0
 
July 23, 2021, midnight N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.7 ppb (3) N/A 61.0 ppb (71) 0.32 ppb (4) N/A 26.0 μg/m3 (81) 81.0
 
July 22, 2021, 11 p.m. N/A 0.0 ppb (0) 2.5 ppb (3) N/A 2.5 ppb (3) N/A 69.0 ppb (97) 0.31 ppb (4) N/A 20.0 μg/m3 (68) 97.0
 
July 22, 2021, 10 p.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 68.0 ppb (94) 0.31 ppb (4) N/A 33.0 μg/m3 (95) 95.0
 
July 22, 2021, 9 p.m. N/A 0.0 ppb (0) 3.2 ppb (4) N/A 3.2 ppb (4) N/A 78.0 ppb (105) 0.31 ppb (4) N/A 31.0 μg/m3 (91) 105.0
 
July 22, 2021, 8 p.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 76.0 ppb (104) 0.31 ppb (4) N/A 28.0 μg/m3 (85) 104.0
 
July 22, 2021, 7 p.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 70.0 ppb (100) 0.33 ppb (4) N/A 31.0 μg/m3 (91) 100.0
 
July 22, 2021, 6 p.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.6 ppb (3) N/A 64.0 ppb (81) 0.34 ppb (4) N/A 35.0 μg/m3 (100) 100.0
 
July 22, 2021, 5 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 48.0 ppb (45) 0.33 ppb (4) N/A 30.0 μg/m3 (89) 89.0
 
July 22, 2021, 4 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 31.0 ppb (29) 0.34 ppb (4) N/A 36.0 μg/m3 (103) 103.0
 
July 22, 2021, 3 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 25.0 ppb (24) 0.34 ppb (4) N/A 35.0 μg/m3 (100) 100.0
 
July 22, 2021, 2 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) N/A 27.0 ppb (25) 0.33 ppb (4) N/A 40.0 μg/m3 (113) 113.0
 
July 22, 2021, 1 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) N/A 43.0 ppb (40) 0.33 ppb (4) N/A 37.0 μg/m3 (105) 105.0
 
July 22, 2021, noon N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) N/A 47.0 ppb (44) 0.32 ppb (4) N/A 37.0 μg/m3 (105) 105.0
 
July 22, 2021, 11 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.7 ppb (2) N/A 51.0 ppb (48) 0.33 ppb (4) N/A 38.0 μg/m3 (108) 108.0
 
July 22, 2021, 10 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.7 ppb (2) N/A 54.0 ppb (50) 0.32 ppb (4) N/A 38.0 μg/m3 (108) 108.0
 
July 22, 2021, 9 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.8 ppb (2) N/A 53.0 ppb (50) 0.34 ppb (4) N/A 37.0 μg/m3 (105) 105.0
 
July 22, 2021, 8 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.7 ppb (2) N/A 53.0 ppb (50) 0.33 ppb (4) N/A 38.0 μg/m3 (108) 108.0
 
July 22, 2021, 7 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 54.0 ppb (50) 0.35 ppb (4) N/A 38.0 μg/m3 (108) 108.0
 
July 22, 2021, 6 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.6 ppb (2) N/A 56.0 ppb (55) 0.33 ppb (4) N/A 37.0 μg/m3 (105) 105.0
 
July 22, 2021, 5 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.8 ppb (2) N/A 56.0 ppb (55) 0.35 ppb (4) N/A 37.0 μg/m3 (105) 105.0
 
July 22, 2021, 4 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 55.0 ppb (51) 0.35 ppb (4) N/A 39.0 μg/m3 (110) 110.0
 
July 22, 2021, 3 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 57.0 ppb (58) 0.38 ppb (5) N/A 44.0 μg/m3 (122) 122.0
 
July 22, 2021, 2 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A 2.1 ppb (2) N/A 58.0 ppb (61) 0.38 ppb (5) N/A 47.0 μg/m3 (130) 130.0
 
July 22, 2021, 1 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) N/A 59.0 ppb (65) 0.31 ppb (4) N/A 34.0 μg/m3 (98) 98.0
 
July 22, 2021, midnight N/A 0.0 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 60.0 ppb (68) 0.27 ppb (4) N/A 28.0 μg/m3 (85) 85.0
 
July 21, 2021, 11 p.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 68.0 ppb (94) 0.27 ppb (4) N/A 24.0 μg/m3 (77) 94.0
 
July 21, 2021, 10 p.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) N/A 67.0 ppb (91) 0.26 ppb (4) N/A 22.0 μg/m3 (72) 91.0
 
July 21, 2021, 9 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 57.0 ppb (58) 0.24 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
July 21, 2021, 8 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 54.0 ppb (50) 0.23 ppb (3) N/A 22.0 μg/m3 (72) 72.0
 
July 21, 2021, 7 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.3 ppb (2) N/A 50.0 ppb (47) 0.23 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
July 21, 2021, 6 p.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.2 ppb (2) N/A 44.0 ppb (41) 0.2 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
July 21, 2021, 5 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) N/A 36.0 ppb (34) 0.19 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
July 21, 2021, 4 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.7 ppb (1) N/A 33.0 ppb (31) 0.16 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
July 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 10.0 μg/m3 (42) 42.0