AQSQID: 470090101

Site Name: Look Rock - Gsmnp

Location: Blount Co, TN

Reporting: True, Located: True

Current AQI: 59.0

Blount Co TN, US: 35.6322, -83.9422

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 25, 2019, midnight N/A 0.1 ppb (0) 2.6 ppb (2) N/A 2.6 ppb (2) N/A 63.0 ppb (48) 0.2 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
March 24, 2019, 11 p.m. N/A 0.1 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 63.0 ppb (48) 0.21 ppb (2) N/A 16.0 μg/m3 (59) 59.0
 
March 24, 2019, 10 p.m. N/A 0.1 ppb (0) 2.8 ppb (3) N/A 2.7 ppb (3) N/A 62.0 ppb (48) 0.21 ppb (2) N/A 16.0 μg/m3 (59) 59.0
 
March 24, 2019, 9 p.m. N/A 0.1 ppb (0) 3.3 ppb (3) N/A 3.3 ppb (3) N/A 62.0 ppb (48) 0.2 ppb (2) N/A 19.0 μg/m3 (65) 65.0
 
March 24, 2019, 8 p.m. N/A 0.1 ppb (0) 3.7 ppb (3) N/A 3.6 ppb (3) N/A 64.0 ppb (49) 0.23 ppb (3) N/A 23.0 μg/m3 (73) 73.0
 
March 24, 2019, 7 p.m. N/A 0.1 ppb (0) 3.2 ppb (3) N/A 3.1 ppb (3) N/A 59.0 ppb (45) 0.21 ppb (2) N/A 18.0 μg/m3 (63) 63.0
 
March 24, 2019, 6 p.m. N/A 0.1 ppb (0) 2.9 ppb (3) N/A 2.8 ppb (3) N/A 59.0 ppb (45) 0.19 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 24, 2019, 5 p.m. N/A 0.2 ppb (0) 3.3 ppb (3) N/A 3.1 ppb (3) N/A 53.0 ppb (41) 0.21 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 24, 2019, 4 p.m. N/A 0.2 ppb (0) 2.6 ppb (2) N/A 2.4 ppb (2) N/A 46.0 ppb (35) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 3 p.m. N/A 0.1 ppb (0) 2.7 ppb (3) N/A 2.6 ppb (2) N/A 51.0 ppb (39) 0.2 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 24, 2019, 2 p.m. N/A 0.1 ppb (0) 2.5 ppb (2) N/A 2.4 ppb (2) N/A 53.0 ppb (41) 0.19 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 24, 2019, 1 p.m. N/A 0.1 ppb (0) 2.5 ppb (2) N/A 2.4 ppb (2) N/A 54.0 ppb (42) 0.19 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 24, 2019, noon N/A 0.2 ppb (0) 15.6 ppb (14) N/A 15.5 ppb (14) N/A 54.0 ppb (42) 0.18 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 11 a.m. N/A 0.9 ppb (1) 34.4 ppb (32) N/A 33.6 ppb (31) N/A 55.0 ppb (42) 0.18 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 10 a.m. N/A 0.1 ppb (0) 2.1 ppb (2) N/A 2.0 ppb (2) N/A 54.0 ppb (42) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 42.0
 
March 24, 2019, 9 a.m. N/A 0.1 ppb (0) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 51.0 ppb (39) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 39.0
 
March 24, 2019, 8 a.m. N/A 0.1 ppb (0) 2.2 ppb (2) N/A 2.1 ppb (2) N/A 54.0 ppb (42) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 42.0
 
March 24, 2019, 7 a.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A 2.4 ppb (2) N/A 56.0 ppb (43) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 43.0
 
March 24, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 5.0 μg/m3 (21) 43.0
 
March 24, 2019, 5 a.m. N/A 0.1 ppb (0) 1.3 ppb (1) N/A 1.3 ppb (1) N/A 54.0 ppb (42) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 42.0
 
March 24, 2019, 4 a.m. N/A 0.1 ppb (0) 1.2 ppb (1) N/A 1.1 ppb (1) N/A 54.0 ppb (42) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 42.0
 
March 24, 2019, 3 a.m. N/A 0.1 ppb (0) 1.5 ppb (1) N/A 1.4 ppb (1) N/A 54.0 ppb (42) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 42.0
 
March 24, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
March 24, 2019, 1 a.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A 1.9 ppb (2) N/A 55.0 ppb (42) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 42.0
 
March 24, 2019, midnight N/A 0.0 ppb (0) 2.1 ppb (2) N/A 2.0 ppb (2) N/A 55.0 ppb (42) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 42.0
 
March 23, 2019, 11 p.m. N/A 0.1 ppb (0) 2.1 ppb (2) N/A 2.0 ppb (2) N/A 56.0 ppb (43) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 43.0
 
March 23, 2019, 10 p.m. N/A 0.1 ppb (0) 1.5 ppb (1) N/A 1.4 ppb (1) N/A 55.0 ppb (42) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 42.0
 
March 23, 2019, 9 p.m. N/A 0.1 ppb (0) 1.7 ppb (2) N/A 1.7 ppb (2) N/A 55.0 ppb (42) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 42.0
 
March 23, 2019, 8 p.m. N/A 0.1 ppb (0) 1.8 ppb (2) N/A 1.7 ppb (2) N/A 54.0 ppb (42) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 42.0
 
March 23, 2019, 7 p.m. N/A 0.1 ppb (0) 1.8 ppb (2) N/A 1.7 ppb (2) N/A 53.0 ppb (41) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 41.0
 
March 23, 2019, 6 p.m. N/A 0.1 ppb (0) 1.8 ppb (2) N/A 1.7 ppb (2) N/A 52.0 ppb (40) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 40.0
 
March 23, 2019, 5 p.m. N/A 0.1 ppb (0) 1.3 ppb (1) N/A 1.3 ppb (1) N/A 50.0 ppb (38) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 38.0
 
March 23, 2019, 4 p.m. N/A 0.1 ppb (0) 1.4 ppb (1) N/A 1.3 ppb (1) N/A 49.0 ppb (38) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 38.0
 
March 23, 2019, 3 p.m. N/A 0.1 ppb (0) 1.6 ppb (1) N/A 1.5 ppb (1) N/A 47.0 ppb (36) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 36.0
 
March 23, 2019, 2 p.m. N/A 0.1 ppb (0) 1.3 ppb (1) N/A 1.2 ppb (1) N/A 50.0 ppb (38) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 38.0
 
March 23, 2019, 1 p.m. N/A 0.1 ppb (0) 1.5 ppb (1) N/A 1.4 ppb (1) N/A 49.0 ppb (38) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 38.0
 
March 23, 2019, noon N/A 0.1 ppb (0) 1.6 ppb (1) N/A 1.5 ppb (1) N/A 47.0 ppb (36) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 36.0
 
March 23, 2019, 11 a.m. N/A 0.0 ppb (0) 1.3 ppb (1) N/A 1.3 ppb (1) N/A 47.0 ppb (36) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 36.0
 
March 23, 2019, 10 a.m. N/A 0.0 ppb (0) 1.4 ppb (1) N/A 1.3 ppb (1) N/A 47.0 ppb (36) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 36.0
 
March 23, 2019, 9 a.m. N/A 0.1 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) N/A 48.0 ppb (37) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 37.0
 
March 23, 2019, 8 a.m. N/A 0.1 ppb (0) 2.0 ppb (2) N/A 1.9 ppb (2) N/A 49.0 ppb (38) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 38.0
 
March 23, 2019, 7 a.m. N/A 0.1 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) N/A 50.0 ppb (38) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 38.0
 
March 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
March 23, 2019, 5 a.m. N/A 0.0 ppb (0) 3.2 ppb (3) N/A 3.1 ppb (3) N/A 49.0 ppb (38) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 38.0
 
March 23, 2019, 4 a.m. N/A 0.1 ppb (0) 3.2 ppb (3) N/A 3.2 ppb (3) N/A 49.0 ppb (38) 0.16 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 23, 2019, 3 a.m. N/A 0.1 ppb (0) 3.8 ppb (4) N/A 3.8 ppb (4) N/A 50.0 ppb (38) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 38.0
 
March 23, 2019, 2 a.m. N/A 0.0 ppb (0) 3.5 ppb (3) N/A 3.5 ppb (3) N/A 52.0 ppb (40) 0.15 ppb (2) N/A 8.0 μg/m3 (33) 40.0
 
March 23, 2019, 1 a.m. N/A 0.0 ppb (0) 3.2 ppb (3) N/A 3.2 ppb (3) N/A 51.0 ppb (39) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 39.0
 
March 23, 2019, midnight N/A 0.1 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 50.0 ppb (38) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 38.0
 
March 22, 2019, 11 p.m. N/A 0.1 ppb (0) 2.6 ppb (2) N/A 2.6 ppb (2) N/A 51.0 ppb (39) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 39.0
 
March 22, 2019, 10 p.m. N/A 0.1 ppb (0) 2.3 ppb (2) N/A 2.3 ppb (2) N/A 53.0 ppb (41) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 41.0
 
March 22, 2019, 9 p.m. N/A 0.1 ppb (0) 2.9 ppb (3) N/A 2.8 ppb (3) N/A 53.0 ppb (41) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 41.0
 
March 22, 2019, 8 p.m. N/A 0.1 ppb (0) 2.5 ppb (2) N/A 2.4 ppb (2) N/A 51.0 ppb (39) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 39.0
 
March 22, 2019, 7 p.m. N/A 0.1 ppb (0) 2.4 ppb (2) N/A 2.4 ppb (2) N/A 49.0 ppb (38) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 38.0
 
March 22, 2019, 6 p.m. N/A 0.1 ppb (0) 2.7 ppb (3) N/A 2.6 ppb (2) N/A 49.0 ppb (38) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 38.0
 
March 22, 2019, 5 p.m. N/A 0.1 ppb (0) 3.1 ppb (3) N/A 3.0 ppb (3) N/A 49.0 ppb (38) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 38.0
 
March 22, 2019, 4 p.m. N/A 0.1 ppb (0) 2.9 ppb (3) N/A 2.7 ppb (3) N/A 47.0 ppb (36) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 36.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
March 22, 2019, noon N/A 0.7 ppb (1) 16.6 ppb (15) N/A 15.8 ppb (15) N/A 41.0 ppb (32) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
March 22, 2019, 11 a.m. N/A 0.7 ppb (1) 36.1 ppb (33) N/A 35.4 ppb (33) N/A 38.0 ppb (29) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 33.0
 
March 22, 2019, 10 a.m. N/A 0.0 ppb (0) 3.2 ppb (3) N/A 3.2 ppb (3) N/A 38.0 ppb (29) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 9 a.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A 3.1 ppb (3) N/A 38.0 ppb (29) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 29.0
 
March 22, 2019, 8 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.9 ppb (3) N/A 38.0 ppb (29) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 7 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.8 ppb (3) N/A 38.0 ppb (29) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 5 a.m. N/A 0.0 ppb (0) 2.5 ppb (2) N/A 2.5 ppb (2) N/A 39.0 ppb (30) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 30.0
 
March 22, 2019, 4 a.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A 2.4 ppb (2) N/A 41.0 ppb (32) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
March 22, 2019, 3 a.m. N/A 0.0 ppb (0) 2.6 ppb (2) N/A 2.6 ppb (2) N/A 42.0 ppb (32) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 32.0
 
March 22, 2019, 2 a.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A 2.4 ppb (2) N/A 43.0 ppb (33) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 33.0
 
March 22, 2019, 1 a.m. N/A 0.0 ppb (0) 3.4 ppb (3) N/A 3.4 ppb (3) N/A 40.0 ppb (31) 0.18 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 22, 2019, midnight N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 42.0 ppb (32) 0.18 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 21, 2019, 11 p.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A 2.4 ppb (2) N/A 45.0 ppb (35) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
March 21, 2019, 10 p.m. N/A 0.0 ppb (0) 2.3 ppb (2) N/A 2.3 ppb (2) N/A 46.0 ppb (35) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
March 21, 2019, 9 p.m. N/A 0.1 ppb (0) 2.8 ppb (3) N/A 2.8 ppb (3) N/A 47.0 ppb (36) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 36.0
 
March 21, 2019, 8 p.m. N/A 0.1 ppb (0) 2.5 ppb (2) N/A 2.5 ppb (2) N/A 46.0 ppb (35) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
March 21, 2019, 7 p.m. N/A 0.2 ppb (0) 3.1 ppb (3) N/A 2.9 ppb (3) N/A 41.0 ppb (32) 0.22 ppb (2) N/A 7.0 μg/m3 (29) 32.0
 
March 21, 2019, 6 p.m. N/A 0.1 ppb (0) 3.2 ppb (3) N/A 3.2 ppb (3) N/A 43.0 ppb (33) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 21, 2019, 5 p.m. N/A 0.0 ppb (0) 3.6 ppb (3) N/A 3.5 ppb (3) N/A 44.0 ppb (34) 0.22 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 4 p.m. N/A 0.0 ppb (0) 3.4 ppb (3) N/A 3.3 ppb (3) N/A 50.0 ppb (38) 0.21 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 3 p.m. N/A 0.1 ppb (0) 4.1 ppb (4) N/A 4.0 ppb (4) N/A 54.0 ppb (42) 0.22 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 21, 2019, 2 p.m. N/A 0.1 ppb (0) 4.1 ppb (4) N/A 4.0 ppb (4) N/A 55.0 ppb (42) 0.22 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 21, 2019, 1 p.m. N/A 0.1 ppb (0) 4.2 ppb (4) N/A 4.1 ppb (4) N/A 51.0 ppb (39) 0.22 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 21, 2019, noon N/A 0.0 ppb (0) 4.1 ppb (4) N/A 4.0 ppb (4) N/A 56.0 ppb (43) 0.21 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 21, 2019, 11 a.m. N/A 0.0 ppb (0) 4.1 ppb (4) N/A 4.1 ppb (4) N/A 58.0 ppb (45) 0.2 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
March 21, 2019, 10 a.m. N/A 0.0 ppb (0) 3.6 ppb (3) N/A 3.6 ppb (3) N/A 61.0 ppb (47) 0.2 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 21, 2019, 9 a.m. N/A 0.0 ppb (0) 4.0 ppb (4) N/A 4.0 ppb (4) N/A 62.0 ppb (48) 0.2 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 21, 2019, 8 a.m. N/A 0.0 ppb (0) 4.2 ppb (4) N/A 4.2 ppb (4) N/A 63.0 ppb (48) 0.21 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
March 21, 2019, 7 a.m. N/A 0.0 ppb (0) 4.1 ppb (4) N/A 4.1 ppb (4) N/A 62.0 ppb (48) 0.21 ppb (2) N/A 16.0 μg/m3 (59) 59.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 21, 2019, 5 a.m. N/A 0.0 ppb (0) 3.8 ppb (4) N/A 3.8 ppb (4) N/A 62.0 ppb (48) 0.2 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
March 21, 2019, 4 a.m. N/A 0.0 ppb (0) 3.6 ppb (3) N/A 3.6 ppb (3) N/A 63.0 ppb (48) 0.19 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
March 21, 2019, 3 a.m. N/A 0.1 ppb (0) 3.9 ppb (4) N/A 3.8 ppb (4) N/A 63.0 ppb (48) 0.19 ppb (2) N/A 11.0 μg/m3 (46) 48.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A N/A 10.0 μg/m3 (42) 48.0
 
March 21, 2019, 1 a.m. N/A 0.0 ppb (0) 4.3 ppb (4) N/A 4.3 ppb (4) N/A 63.0 ppb (48) 0.2 ppb (2) N/A 11.0 μg/m3 (46) 48.0
 
March 21, 2019, midnight N/A 0.0 ppb (0) 4.0 ppb (4) N/A 4.0 ppb (4) N/A 62.0 ppb (48) 0.2 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 20, 2019, 11 p.m. N/A 0.0 ppb (0) 3.5 ppb (3) N/A 3.5 ppb (3) N/A 61.0 ppb (47) 0.19 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 20, 2019, 10 p.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A 3.1 ppb (3) N/A 61.0 ppb (47) 0.19 ppb (2) N/A 10.0 μg/m3 (42) 47.0
 
March 20, 2019, 9 p.m. N/A 0.0 ppb (0) 3.3 ppb (3) N/A 3.3 ppb (3) N/A 60.0 ppb (46) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 46.0
 
March 20, 2019, 8 p.m. N/A 0.0 ppb (0) 3.3 ppb (3) N/A 3.3 ppb (3) N/A 60.0 ppb (46) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 46.0
 
March 20, 2019, 7 p.m. N/A 0.1 ppb (0) 3.2 ppb (3) N/A 3.1 ppb (3) N/A 58.0 ppb (45) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 45.0
 
March 20, 2019, 6 p.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.7 ppb (3) N/A 55.0 ppb (42) 0.21 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 20, 2019, 5 p.m. N/A 0.0 ppb (0) 2.6 ppb (2) N/A 2.6 ppb (2) N/A 54.0 ppb (42) 0.19 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 20, 2019, 4 p.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.8 ppb (3) N/A 54.0 ppb (42) 0.19 ppb (2) N/A 16.0 μg/m3 (59) 59.0
 
March 20, 2019, 3 p.m. N/A 0.1 ppb (0) 3.0 ppb (3) N/A 2.9 ppb (3) N/A 53.0 ppb (41) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 2 p.m. N/A 0.1 ppb (0) 2.7 ppb (3) N/A 2.6 ppb (2) N/A 49.0 ppb (38) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 1 p.m. N/A 0.1 ppb (0) 2.5 ppb (2) N/A 2.4 ppb (2) N/A 50.0 ppb (38) 0.19 ppb (2) N/A 8.0 μg/m3 (33) 38.0
 
March 20, 2019, noon N/A 1.0 ppb (1) 16.0 ppb (15) N/A 15.0 ppb (14) N/A 51.0 ppb (39) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 39.0
 
March 20, 2019, 11 a.m. N/A 0.5 ppb (0) 35.3 ppb (33) N/A 34.8 ppb (32) N/A 52.0 ppb (40) 0.18 ppb (2) N/A 9.0 μg/m3 (38) 40.0
 
March 20, 2019, 10 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A 2.1 ppb (2) N/A 52.0 ppb (40) 0.18 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 9 a.m. N/A 0.0 ppb (0) 2.2 ppb (2) N/A 2.2 ppb (2) N/A 52.0 ppb (40) 0.19 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 20, 2019, 8 a.m. N/A 0.0 ppb (0) 2.3 ppb (2) N/A 2.3 ppb (2) N/A 52.0 ppb (40) 0.19 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 7 a.m. N/A 0.0 ppb (0) 2.4 ppb (2) N/A 2.4 ppb (2) N/A 53.0 ppb (41) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 41.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 8.0 μg/m3 (33) 42.0
 
March 20, 2019, 5 a.m. N/A 0.0 ppb (0) 2.5 ppb (2) N/A 2.4 ppb (2) N/A 54.0 ppb (42) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 42.0
 
March 20, 2019, 4 a.m. N/A 0.0 ppb (0) 2.6 ppb (2) N/A 2.6 ppb (2) N/A 53.0 ppb (41) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 41.0
 
March 20, 2019, 3 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 54.0 ppb (42) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 42.0
 
March 20, 2019, 2 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A 2.9 ppb (3) N/A 55.0 ppb (42) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 42.0
 
March 20, 2019, 1 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.8 ppb (3) N/A 56.0 ppb (43) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 43.0
 
March 20, 2019, midnight N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.8 ppb (3) N/A 55.0 ppb (42) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 42.0
 
March 19, 2019, 11 p.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A 2.8 ppb (3) N/A 54.0 ppb (42) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 42.0
 
March 19, 2019, 10 p.m. N/A 0.1 ppb (0) 2.8 ppb (3) N/A 2.8 ppb (3) N/A 55.0 ppb (42) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 42.0
 
March 19, 2019, 9 p.m. N/A 0.2 ppb (0) 3.3 ppb (3) N/A 3.2 ppb (3) N/A 55.0 ppb (42) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 42.0
 
March 19, 2019, 8 p.m. N/A 0.2 ppb (0) 3.1 ppb (3) N/A 2.9 ppb (3) N/A 54.0 ppb (42) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 42.0
 
March 19, 2019, 7 p.m. N/A 0.2 ppb (0) 2.7 ppb (3) N/A 2.6 ppb (2) N/A 54.0 ppb (42) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 42.0
 
March 19, 2019, 6 p.m. N/A 0.1 ppb (0) 2.3 ppb (2) N/A 2.2 ppb (2) N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
March 19, 2019, 5 p.m. N/A 0.2 ppb (0) 2.3 ppb (2) N/A 2.1 ppb (2) N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
March 19, 2019, 4 p.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
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 7.0 μg/m3 (29) 35.0
 
March 19, 2019, 11 a.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A 0.2 ppb (0) N/A 44.0 ppb (34) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 34.0
 
March 19, 2019, 10 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.5 ppb (0) N/A 43.0 ppb (33) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 9 a.m. N/A 0.0 ppb (0) 0.4 ppb (0) N/A 0.4 ppb (0) N/A 44.0 ppb (34) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 34.0
 
March 19, 2019, 8 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A 0.2 ppb (0) N/A 44.0 ppb (34) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 34.0
 
March 19, 2019, 7 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A 0.2 ppb (0) N/A 45.0 ppb (35) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 35.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 19, 2019, 5 a.m. N/A 0.0 ppb (0) -0.1 ppb (0) N/A -0.1 ppb (0) N/A 47.0 ppb (36) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 36.0
 
March 19, 2019, 4 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 47.0 ppb (36) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 36.0
 
March 19, 2019, 3 a.m. N/A 0.0 ppb (0) 0.5 ppb (0) N/A 0.5 ppb (0) N/A 47.0 ppb (36) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 36.0
 
March 19, 2019, 2 a.m. N/A 0.0 ppb (0) 0.4 ppb (0) N/A 0.4 ppb (0) N/A 48.0 ppb (37) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 37.0
 
March 19, 2019, 1 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 49.0 ppb (38) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 38.0
 
March 19, 2019, midnight N/A 0.0 ppb (0) -0.1 ppb (0) N/A -0.1 ppb (0) N/A 49.0 ppb (38) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 38.0
 
March 18, 2019, 11 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A -0.1 ppb (0) N/A 50.0 ppb (38) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 38.0
 
March 18, 2019, 10 p.m. N/A 0.1 ppb (0) 0.0 ppb (0) N/A -0.1 ppb (0) N/A 51.0 ppb (39) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 39.0
 
March 18, 2019, 9 p.m. N/A 0.1 ppb (0) -0.2 ppb (0) N/A -0.3 ppb (0) N/A 51.0 ppb (39) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 39.0
 
March 18, 2019, 8 p.m. N/A 0.1 ppb (0) -0.3 ppb (0) N/A -0.4 ppb (0) N/A 51.0 ppb (39) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 39.0
 
March 18, 2019, 7 p.m. N/A 0.1 ppb (0) -0.2 ppb (0) N/A -0.3 ppb (0) N/A 51.0 ppb (39) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 39.0
 
March 18, 2019, 6 p.m. N/A 0.2 ppb (0) 0.1 ppb (0) N/A -0.1 ppb (0) N/A 50.0 ppb (38) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 38.0
 
March 18, 2019, 5 p.m. N/A 0.3 ppb (0) 0.6 ppb (1) N/A 0.3 ppb (0) N/A 48.0 ppb (37) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 37.0
 
March 18, 2019, 4 p.m. N/A 0.4 ppb (0) 1.0 ppb (1) N/A 0.6 ppb (1) N/A 46.0 ppb (35) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 35.0
 
March 18, 2019, 3 p.m. N/A 0.7 ppb (1) 3.2 ppb (3) N/A 2.6 ppb (2) N/A 42.0 ppb (32) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 2 p.m. N/A 0.6 ppb (1) 3.0 ppb (3) N/A 2.4 ppb (2) N/A 39.0 ppb (30) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 1 p.m. N/A 0.4 ppb (0) 2.6 ppb (2) N/A 2.2 ppb (2) N/A 39.0 ppb (30) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, noon N/A 0.5 ppb (0) 16.0 ppb (15) N/A 15.5 ppb (14) N/A 39.0 ppb (30) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 11 a.m. N/A 1.0 ppb (1) 35.9 ppb (33) N/A 34.9 ppb (32) N/A 40.0 ppb (31) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 10 a.m. N/A 0.0 ppb (0) 1.4 ppb (1) N/A 1.4 ppb (1) N/A 42.0 ppb (32) 0.19 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 9 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.7 ppb (1) N/A 46.0 ppb (35) 0.19 ppb (2) N/A 7.0 μg/m3 (29) 35.0
 
March 18, 2019, 8 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.7 ppb (1) N/A 46.0 ppb (35) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
March 18, 2019, 7 a.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A 1.0 ppb (1) N/A 48.0 ppb (37) 0.19 ppb (2) N/A 7.0 μg/m3 (29) 37.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 5 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) N/A 52.0 ppb (40) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 40.0
 
March 18, 2019, 4 a.m. N/A 0.0 ppb (0) 0.4 ppb (0) N/A 0.3 ppb (0) N/A 52.0 ppb (40) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 40.0
 
March 18, 2019, 3 a.m. N/A 0.1 ppb (0) 0.5 ppb (0) N/A 0.4 ppb (0) N/A 53.0 ppb (41) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 41.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 6.0 μg/m3 (25) 41.0
 
March 18, 2019, 1 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 51.0 ppb (39) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 39.0