AQSQID: 290990019

Site Name: Arnold

Location: Arnold, MO

Reporting: True, Located: True

Current AQI: 41.0

Arnold MO, US: 38.448633, -90.39854

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 9.0 μg/m3 (8) 4.7 μg/m3 (20) 41.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 8.0 μg/m3 (7) 3.5 μg/m3 (15) 42.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 7.0 μg/m3 (6) 4.7 μg/m3 (20) 42.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 10.0 μg/m3 (9) 4.1 μg/m3 (17) 42.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 41.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 9.0 μg/m3 (8) 0.3 μg/m3 (1) 39.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 10.0 μg/m3 (9) 3.6 μg/m3 (15) 37.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 15.0 μg/m3 (14) 4.2 μg/m3 (18) 35.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 13.0 μg/m3 (12) 4.9 μg/m3 (20) 32.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 13.0 μg/m3 (12) 5.2 μg/m3 (22) 29.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 13.0 μg/m3 (12) 8.1 μg/m3 (34) 34.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 12.0 μg/m3 (11) 3.8 μg/m3 (16) 27.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 9.0 μg/m3 (8) 6.8 μg/m3 (28) 28.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 5.5 μg/m3 (23) 28.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) 6.8 μg/m3 (28) 28.0
 
March 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 7.0 μg/m3 (6) 6.6 μg/m3 (28) 30.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 8.0 μg/m3 (7) 6.7 μg/m3 (28) 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 8.0 μg/m3 (7) 6.1 μg/m3 (25) 29.0
 
March 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 8.0 μg/m3 (7) 6.9 μg/m3 (29) 29.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) 4.7 μg/m3 (20) 35.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 8.0 μg/m3 (7) 4.7 μg/m3 (20) 35.0
 
March 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 35.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 1.2 μg/m3 (5) 33.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 1.4 μg/m3 (6) 34.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) 6.4 μg/m3 (27) 36.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 38.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 10.0 μg/m3 (9) 6.4 μg/m3 (27) 39.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 10.0 μg/m3 (9) 3.5 μg/m3 (15) 38.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 9.0 μg/m3 (8) 8.9 μg/m3 (37) 37.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 36.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 10.0 μg/m3 (9) 0.6 μg/m3 (2) 35.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 9.0 μg/m3 (8) 6.3 μg/m3 (26) 36.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 11.0 μg/m3 (10) 8.4 μg/m3 (35) 35.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 12.0 μg/m3 (11) 5.9 μg/m3 (25) 34.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 11.0 μg/m3 (10) 11.9 μg/m3 (50) 50.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 32.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 32.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 7.0 μg/m3 (6) 9.2 μg/m3 (38) 38.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 7.0 μg/m3 (6) 8.9 μg/m3 (37) 37.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 10.2 μg/m3 (42) 42.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 13.5 μg/m3 (53) 53.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 10.0 μg/m3 (9) 11.1 μg/m3 (46) 46.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 6.5 μg/m3 (27) 32.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 9.0 μg/m3 (8) 6.4 μg/m3 (27) 33.0
 
March 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 10.0 μg/m3 (9) 9.3 μg/m3 (39) 39.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 10.8 μg/m3 (45) 45.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 8.1 μg/m3 (34) 34.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 9.0 μg/m3 (8) 6.3 μg/m3 (26) 34.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 9.0 μg/m3 (8) 5.4 μg/m3 (23) 35.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 8.0 μg/m3 (7) 8.8 μg/m3 (37) 37.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 10.0 μg/m3 (9) 11.3 μg/m3 (47) 47.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 11.0 μg/m3 (10) 9.2 μg/m3 (38) 38.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 12.0 μg/m3 (11) 9.1 μg/m3 (38) 38.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 20.0 μg/m3 (18) 13.2 μg/m3 (53) 53.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 21.0 μg/m3 (19) 14.7 μg/m3 (56) 56.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 18.0 μg/m3 (16) 10.3 μg/m3 (43) 43.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 16.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 13.0 μg/m3 (12) 8.8 μg/m3 (37) 38.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 14.0 μg/m3 (13) 9.8 μg/m3 (41) 41.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 15.0 μg/m3 (14) 7.3 μg/m3 (30) 33.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 16.0 μg/m3 (15) 7.9 μg/m3 (33) 35.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 14.0 μg/m3 (13) 10.3 μg/m3 (43) 43.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 15.0 μg/m3 (14) 11.9 μg/m3 (50) 50.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 14.0 μg/m3 (13) 8.2 μg/m3 (34) 38.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 14.0 μg/m3 (13) 7.0 μg/m3 (29) 38.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 15.0 μg/m3 (14) 6.9 μg/m3 (29) 32.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 18.0 μg/m3 (16) 11.2 μg/m3 (47) 47.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 18.0 μg/m3 (16) 8.5 μg/m3 (35) 35.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 14.0 μg/m3 (13) 7.5 μg/m3 (31) 38.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 16.0 μg/m3 (15) 9.9 μg/m3 (41) 41.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 13.0 μg/m3 (12) 7.1 μg/m3 (30) 39.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 12.0 μg/m3 (11) 9.5 μg/m3 (40) 40.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 11.0 μg/m3 (10) 7.1 μg/m3 (30) 40.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 11.0 μg/m3 (10) 7.5 μg/m3 (31) 39.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 41.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 10.0 μg/m3 (9) 6.2 μg/m3 (26) 38.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 12.0 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 10.0 μg/m3 (9) 7.0 μg/m3 (29) 32.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 12.0 μg/m3 (11) 6.9 μg/m3 (29) 29.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 14.0 μg/m3 (13) 7.5 μg/m3 (31) 31.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 16.0 μg/m3 (15) 10.9 μg/m3 (45) 45.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 17.0 μg/m3 (15) 12.8 μg/m3 (52) 52.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 14.0 μg/m3 (13) 13.3 μg/m3 (53) 53.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 11.0 μg/m3 (10) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 13.0 μg/m3 (12) 13.2 μg/m3 (53) 53.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) 10.8 μg/m3 (45) 45.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 6.5 μg/m3 (27) 28.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 10.0 μg/m3 (9) 9.2 μg/m3 (38) 38.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 7.5 μg/m3 (31) 31.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 9.5 μg/m3 (40) 40.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 6.1 μg/m3 (25) 29.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 7.0 μg/m3 (6) 0.0 μg/m3 (0) 38.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 6.0 μg/m3 (5) N/A 39.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 5.0 μg/m3 (5) N/A 39.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 6.0 μg/m3 (5) N/A 40.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 5.0 μg/m3 (5) N/A 39.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 4.0 μg/m3 (4) N/A 38.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 6.0 μg/m3 (5) N/A 37.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 6.0 μg/m3 (5) N/A 35.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 10.0 μg/m3 (9) N/A 30.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 12.0 μg/m3 (11) N/A 24.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 15.0 μg/m3 (14) N/A 15.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 17.0 μg/m3 (15) N/A 15.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 11.0 μg/m3 (10) N/A 18.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 9.0 μg/m3 (8) N/A 21.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 12.0 μg/m3 (11) N/A 11.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 11.0 μg/m3 (10) N/A 12.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 12.0 μg/m3 (11) N/A 14.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.0 μg/m3 (8) N/A 25.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 9.0 μg/m3 (8) N/A 30.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) N/A 31.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 26.0 μg/m3 (24) N/A 33.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 13.0 μg/m3 (12) N/A 32.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 10.0 μg/m3 (9) 52.7 μg/m3 (143) 143.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 7.0 μg/m3 (6) N/A 32.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 6.0 μg/m3 (5) N/A 35.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 7.0 μg/m3 (6) N/A 36.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 6.0 μg/m3 (5) N/A 38.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 6.0 μg/m3 (5) 7.1 μg/m3 (30) 38.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 37.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 36.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 5.0 μg/m3 (5) 4.5 μg/m3 (19) 36.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 6.0 μg/m3 (5) 5.1 μg/m3 (21) 35.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 7.0 μg/m3 (6) 8.3 μg/m3 (35) 35.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) 7.7 μg/m3 (32) 32.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 9.0 μg/m3 (8) 8.5 μg/m3 (35) 35.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 31.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 9.0 μg/m3 (8) 6.1 μg/m3 (25) 30.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 9.0 μg/m3 (8) 6.7 μg/m3 (28) 32.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 9.0 μg/m3 (8) 5.5 μg/m3 (23) 32.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 8.0 μg/m3 (7) 1.8 μg/m3 (8) 32.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 32.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 8.0 μg/m3 (7) 5.9 μg/m3 (25) 32.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 5.6 μg/m3 (23) 30.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 11.0 μg/m3 (10) 7.1 μg/m3 (30) 30.0
 
March 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 8.6 μg/m3 (36) 36.0
 
March 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 12.0 μg/m3 (50) 50.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 13.0 μg/m3 (12) 9.2 μg/m3 (38) 38.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 9.0 μg/m3 (8) 11.1 μg/m3 (46) 46.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) 3.7 μg/m3 (15) 35.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 4.0 μg/m3 (4) 5.5 μg/m3 (23) 37.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 6.3 μg/m3 (26) 26.0
 
March 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 4.5 μg/m3 (19) 19.0
 
March 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 3.4 μg/m3 (14) 14.0
 
March 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 4.2 μg/m3 (18) 18.0
 
March 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 6.2 μg/m3 (26) 26.0
 
March 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 4.0 μg/m3 (4) 4.3 μg/m3 (18) 35.0
 
March 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 5.0 μg/m3 (5) 5.8 μg/m3 (24) 34.0
 
March 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 32.0
 
March 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) 9.9 μg/m3 (41) 41.0
 
March 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 27.0
 
March 16, 2019, noon N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
March 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 8.0 μg/m3 (7) 6.7 μg/m3 (28) 28.0
 
March 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 8.0 μg/m3 (7) 5.4 μg/m3 (23) 25.0
 
March 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 7.0 μg/m3 (6) 7.3 μg/m3 (30) 30.0
 
March 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 28.0
 
March 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 28.0
 
March 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 31.0
 
March 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 5.0 μg/m3 (5) 2.4 μg/m3 (10) 31.0
 
March 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 0.8 μg/m3 (3) 30.0
 
March 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) 0.2 μg/m3 (1) 32.0
 
March 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) 4.4 μg/m3 (18) 32.0
 
March 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) -0.2 μg/m3 (0) 31.0
 
March 16, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) 0.1 μg/m3 (0) 32.0