AQSQID: 490130002

Site Name: Roosvelt

Location: Roosevelt, UT

Reporting: True, Located: True

Current AQI: 38.0

Roosevelt UT, US: 40.2943, -110.009

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 22, 2019, 10 a.m. 8.3 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 22, 2019, 9 a.m. 7.2 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 8.4 μg/m3 (35) 35.0
 
March 22, 2019, 8 a.m. 6.4 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 7 a.m. 9.2 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 35.0 ppb (27) N/A N/A 10.6 μg/m3 (44) 44.0
 
March 22, 2019, 6 a.m. 10.0 ppb (9) 0.9 ppb (1) N/A 10.0 ppb (9) N/A N/A 36.0 ppb (28) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 22, 2019, 5 a.m. 6.1 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 22, 2019, 4 a.m. 6.4 ppb (6) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A 43.0 ppb (33) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 22, 2019, 3 a.m. 7.0 ppb (6) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 46.0 ppb (35) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 22, 2019, 2 a.m. 6.4 ppb (6) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 47.0 ppb (36) N/A N/A 7.6 μg/m3 (32) 36.0
 
March 22, 2019, 1 a.m. 6.2 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (35) N/A N/A 4.3 μg/m3 (18) 35.0
 
March 22, 2019, midnight 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 49.0 ppb (38) N/A N/A 5.8 μg/m3 (24) 38.0
 
March 21, 2019, 11 p.m. 5.3 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 55.0 ppb (42) N/A N/A 6.2 μg/m3 (26) 42.0
 
March 21, 2019, 10 p.m. 6.6 ppb (6) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 51.0 ppb (39) N/A N/A 5.6 μg/m3 (23) 39.0
 
March 21, 2019, 9 p.m. 7.0 ppb (6) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 50.0 ppb (38) N/A N/A 4.8 μg/m3 (20) 38.0
 
March 21, 2019, 8 p.m. 2.6 ppb (2) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (42) N/A N/A 1.5 μg/m3 (6) 42.0
 
March 21, 2019, 7 p.m. 4.1 ppb (4) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 56.0 ppb (43) N/A N/A 3.5 μg/m3 (15) 43.0
 
March 21, 2019, 6 p.m. 6.2 ppb (6) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 52.0 ppb (40) N/A N/A 6.2 μg/m3 (26) 40.0
 
March 21, 2019, 5 p.m. 9.7 ppb (9) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A 42.0 ppb (32) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 21, 2019, 4 p.m. 11.7 ppb (11) 3.0 ppb (3) N/A 10.0 ppb (9) N/A N/A 38.0 ppb (29) N/A N/A 8.3 μg/m3 (35) 35.0
 
March 21, 2019, 3 p.m. 14.9 ppb (14) 3.4 ppb (3) N/A 12.0 ppb (11) N/A N/A 30.0 ppb (23) N/A N/A 13.5 μg/m3 (53) 53.0
 
March 21, 2019, 2 p.m. 19.0 ppb (18) 3.5 ppb (3) N/A 16.0 ppb (15) N/A N/A 22.0 ppb (17) N/A N/A 10.1 μg/m3 (42) 42.0
 
March 21, 2019, 1 p.m. 8.1 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 37.0 ppb (28) N/A N/A 7.5 μg/m3 (31) 31.0
 
March 21, 2019, noon 10.9 ppb (10) 1.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) N/A N/A 7.6 μg/m3 (32) 32.0
 
March 21, 2019, 11 a.m. 9.9 ppb (9) 1.2 ppb (1) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) N/A N/A 6.1 μg/m3 (25) 25.0
 
March 21, 2019, 10 a.m. 8.1 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) N/A N/A 5.2 μg/m3 (22) 22.0
 
March 21, 2019, 9 a.m. 5.9 ppb (5) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A 3.2 μg/m3 (13) 29.0
 
March 21, 2019, 8 a.m. 3.9 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A N/A 2.1 μg/m3 (9) 34.0
 
March 21, 2019, 7 a.m. 5.1 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) N/A N/A 5.2 μg/m3 (22) 32.0
 
March 21, 2019, 6 a.m. 4.5 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) N/A N/A 2.8 μg/m3 (12) 35.0
 
March 21, 2019, 5 a.m. 4.4 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) N/A N/A 2.9 μg/m3 (12) 38.0
 
March 21, 2019, 4 a.m. 4.3 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 49.0 ppb (38) N/A N/A 3.5 μg/m3 (15) 38.0
 
March 21, 2019, 3 a.m. 6.0 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 54.0 ppb (42) N/A N/A 3.7 μg/m3 (15) 42.0
 
March 21, 2019, 2 a.m. 8.1 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 54.0 ppb (42) N/A N/A 4.8 μg/m3 (20) 42.0
 
March 21, 2019, 1 a.m. 4.8 ppb (4) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 63.0 ppb (48) N/A N/A 3.1 μg/m3 (13) 48.0
 
March 21, 2019, midnight 3.7 ppb (3) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 67.0 ppb (52) N/A N/A 3.3 μg/m3 (14) 52.0
 
March 20, 2019, 11 p.m. 3.9 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 69.0 ppb (53) N/A N/A 3.7 μg/m3 (15) 53.0
 
March 20, 2019, 10 p.m. 2.9 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 67.0 ppb (52) N/A N/A 2.3 μg/m3 (10) 52.0
 
March 20, 2019, 9 p.m. 4.8 ppb (4) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 66.0 ppb (51) N/A N/A 3.6 μg/m3 (15) 51.0
 
March 20, 2019, 8 p.m. 4.4 ppb (4) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 65.0 ppb (50) N/A N/A 4.6 μg/m3 (19) 50.0
 
March 20, 2019, 7 p.m. 7.1 ppb (7) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 61.0 ppb (47) N/A N/A 6.1 μg/m3 (25) 47.0
 
March 20, 2019, 6 p.m. 6.6 ppb (6) 2.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 56.0 ppb (43) N/A N/A 6.1 μg/m3 (25) 43.0
 
March 20, 2019, 5 p.m. 7.2 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
March 20, 2019, 4 p.m. 8.2 ppb (8) 3.4 ppb (3) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 20, 2019, 3 p.m. 21.6 ppb (20) 8.9 ppb (8) N/A 14.0 ppb (13) N/A N/A 35.0 ppb (27) N/A N/A 7.3 μg/m3 (30) 30.0
 
March 20, 2019, 2 p.m. 36.5 ppb (34) 14.7 ppb (14) N/A 23.0 ppb (21) N/A N/A 20.0 ppb (15) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 20, 2019, 1 p.m. 16.0 ppb (15) 2.7 ppb (3) N/A 14.0 ppb (13) N/A N/A 30.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 20, 2019, noon 8.2 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 39.0 ppb (30) N/A N/A 3.9 μg/m3 (16) 30.0
 
March 20, 2019, 11 a.m. 7.4 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
March 20, 2019, 10 a.m. 7.6 ppb (7) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 35.0 ppb (27) N/A N/A 4.6 μg/m3 (19) 27.0
 
March 20, 2019, 9 a.m. 4.9 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A N/A 4.9 μg/m3 (20) 28.0
 
March 20, 2019, 8 a.m. 4.8 ppb (4) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) N/A N/A 4.8 μg/m3 (20) 32.0
 
March 20, 2019, 7 a.m. 5.1 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 46.0 ppb (35) N/A N/A 5.3 μg/m3 (22) 35.0
 
March 20, 2019, 6 a.m. 5.1 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (36) N/A N/A 5.8 μg/m3 (24) 36.0
 
March 20, 2019, 5 a.m. 5.0 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (38) N/A N/A 5.9 μg/m3 (25) 38.0
 
March 20, 2019, 4 a.m. 6.9 ppb (6) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A 49.0 ppb (38) N/A N/A 5.7 μg/m3 (24) 38.0
 
March 20, 2019, 3 a.m. 4.7 ppb (4) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 52.0 ppb (40) N/A N/A 5.2 μg/m3 (22) 40.0
 
March 20, 2019, 2 a.m. 5.9 ppb (5) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 59.0 ppb (45) N/A N/A 5.6 μg/m3 (23) 45.0
 
March 20, 2019, 1 a.m. 4.5 ppb (4) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 65.0 ppb (50) N/A N/A 5.6 μg/m3 (23) 50.0
 
March 20, 2019, midnight 3.9 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 64.0 ppb (49) N/A N/A 4.6 μg/m3 (19) 49.0
 
March 19, 2019, 11 p.m. 4.1 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 65.0 ppb (50) N/A N/A 5.3 μg/m3 (22) 50.0
 
March 19, 2019, 10 p.m. 3.8 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 64.0 ppb (49) N/A N/A 4.5 μg/m3 (19) 49.0
 
March 19, 2019, 9 p.m. 3.2 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 63.0 ppb (48) N/A N/A 4.0 μg/m3 (17) 48.0
 
March 19, 2019, 8 p.m. 3.4 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 63.0 ppb (48) N/A N/A 4.2 μg/m3 (18) 48.0
 
March 19, 2019, 7 p.m. 6.5 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 65.0 ppb (50) N/A N/A 6.5 μg/m3 (27) 50.0
 
March 19, 2019, 6 p.m. 6.8 ppb (6) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 61.0 ppb (47) N/A N/A 6.3 μg/m3 (26) 47.0
 
March 19, 2019, 5 p.m. 9.4 ppb (9) 3.6 ppb (3) N/A 7.0 ppb (6) N/A N/A 55.0 ppb (42) N/A N/A 5.4 μg/m3 (23) 42.0
 
March 19, 2019, 4 p.m. 18.9 ppb (18) 8.6 ppb (8) N/A 11.0 ppb (10) N/A N/A 40.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
March 19, 2019, 3 p.m. 7.9 ppb (7) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) N/A N/A 4.2 μg/m3 (18) 31.0
 
March 19, 2019, 2 p.m. 24.7 ppb (23) 10.2 ppb (9) N/A 15.0 ppb (14) N/A N/A 28.0 ppb (22) N/A N/A 5.4 μg/m3 (23) 23.0
 
March 19, 2019, 1 p.m. 10.4 ppb (10) 1.5 ppb (1) N/A 10.0 ppb (9) N/A N/A 34.0 ppb (26) N/A N/A 3.5 μg/m3 (15) 26.0
 
March 19, 2019, noon 8.0 ppb (7) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) N/A N/A 3.6 μg/m3 (15) 26.0
 
March 19, 2019, 11 a.m. 5.5 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
March 19, 2019, 10 a.m. 7.5 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 37.0 ppb (28) N/A N/A 3.5 μg/m3 (15) 28.0
 
March 19, 2019, 9 a.m. 6.1 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 4.2 μg/m3 (18) 27.0
 
March 19, 2019, 8 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A 3.6 μg/m3 (15) 29.0
 
March 19, 2019, 7 a.m. 5.2 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A N/A 5.5 μg/m3 (23) 28.0
 
March 19, 2019, 6 a.m. 4.6 ppb (4) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) N/A N/A 5.1 μg/m3 (21) 33.0
 
March 19, 2019, 5 a.m. 5.2 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) N/A N/A 6.4 μg/m3 (27) 33.0
 
March 19, 2019, 4 a.m. 4.9 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 46.0 ppb (35) N/A N/A 5.3 μg/m3 (22) 35.0
 
March 19, 2019, 3 a.m. 5.8 ppb (5) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 50.0 ppb (38) N/A N/A 5.8 μg/m3 (24) 38.0
 
March 19, 2019, 2 a.m. 7.0 ppb (6) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A 61.0 ppb (47) N/A N/A 7.5 μg/m3 (31) 47.0
 
March 19, 2019, 1 a.m. 8.6 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 61.0 ppb (47) N/A N/A 7.3 μg/m3 (30) 47.0
 
March 19, 2019, midnight 7.5 ppb (7) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A 66.0 ppb (51) N/A N/A 6.9 μg/m3 (29) 51.0
 
March 18, 2019, 11 p.m. 5.9 ppb (5) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 68.0 ppb (52) N/A N/A 6.8 μg/m3 (28) 52.0
 
March 18, 2019, 10 p.m. 4.7 ppb (4) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 67.0 ppb (52) N/A N/A 6.0 μg/m3 (25) 52.0
 
March 18, 2019, 9 p.m. 5.6 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 68.0 ppb (52) N/A N/A 7.3 μg/m3 (30) 52.0
 
March 18, 2019, 8 p.m. 7.7 ppb (7) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A 72.0 ppb (56) N/A N/A 9.9 μg/m3 (41) 56.0
 
March 18, 2019, 7 p.m. 9.5 ppb (9) 2.6 ppb (2) N/A 8.0 ppb (7) N/A N/A 65.0 ppb (50) N/A N/A 9.7 μg/m3 (40) 50.0
 
March 18, 2019, 6 p.m. 8.5 ppb (8) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A 59.0 ppb (45) N/A N/A 9.6 μg/m3 (40) 45.0
 
March 18, 2019, 5 p.m. 10.0 ppb (9) 3.1 ppb (3) N/A 8.0 ppb (7) N/A N/A 53.0 ppb (41) N/A N/A 10.5 μg/m3 (44) 44.0
 
March 18, 2019, 4 p.m. 17.2 ppb (16) 7.1 ppb (7) N/A 11.0 ppb (10) N/A N/A 44.0 ppb (34) N/A N/A 11.4 μg/m3 (48) 48.0
 
March 18, 2019, 3 p.m. 18.4 ppb (17) 7.9 ppb (7) N/A 11.0 ppb (10) N/A N/A 37.0 ppb (28) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 2 p.m. 13.6 ppb (13) 3.4 ppb (3) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) N/A N/A 6.5 μg/m3 (27) 27.0
 
March 18, 2019, 1 p.m. 26.7 ppb (25) 3.9 ppb (4) N/A 24.0 ppb (22) N/A N/A 12.0 ppb (9) N/A N/A 7.7 μg/m3 (32) 32.0
 
March 18, 2019, noon 8.5 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) N/A N/A 5.1 μg/m3 (21) 26.0
 
March 18, 2019, 11 a.m. 12.4 ppb (11) 2.8 ppb (3) N/A 10.0 ppb (9) N/A N/A 37.0 ppb (28) N/A N/A 3.7 μg/m3 (15) 28.0
 
March 18, 2019, 10 a.m. 7.8 ppb (7) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 38.0 ppb (29) N/A N/A 4.9 μg/m3 (20) 29.0
 
March 18, 2019, 9 a.m. 12.9 ppb (12) 1.6 ppb (1) N/A 12.0 ppb (11) N/A N/A 30.0 ppb (23) N/A N/A 7.5 μg/m3 (31) 31.0
 
March 18, 2019, 8 a.m. 13.0 ppb (12) 1.1 ppb (1) N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) N/A N/A 4.9 μg/m3 (20) 21.0
 
March 18, 2019, 7 a.m. 5.4 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) N/A N/A 3.7 μg/m3 (15) 30.0
 
March 18, 2019, 6 a.m. 4.8 ppb (4) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) N/A N/A 4.3 μg/m3 (18) 31.0
 
March 18, 2019, 5 a.m. 5.9 ppb (5) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) N/A N/A 3.2 μg/m3 (13) 31.0
 
March 18, 2019, 4 a.m. 6.8 ppb (6) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A 43.0 ppb (33) N/A N/A 6.6 μg/m3 (28) 33.0
 
March 18, 2019, 3 a.m. 7.2 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 62.0 ppb (48) N/A N/A 7.6 μg/m3 (32) 48.0
 
March 18, 2019, 2 a.m. 8.6 ppb (8) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 68.0 ppb (52) N/A N/A 9.3 μg/m3 (39) 52.0
 
March 18, 2019, 1 a.m. 7.3 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 71.0 ppb (55) N/A N/A 6.6 μg/m3 (28) 55.0
 
March 18, 2019, midnight 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 73.0 ppb (57) N/A N/A 6.0 μg/m3 (25) 57.0
 
March 17, 2019, 11 p.m. 6.4 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 77.0 ppb (60) N/A N/A 6.3 μg/m3 (26) 60.0
 
March 17, 2019, 10 p.m. 6.7 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 79.0 ppb (62) N/A N/A 6.7 μg/m3 (28) 62.0
 
March 17, 2019, 9 p.m. 6.8 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 79.0 ppb (62) N/A N/A 7.0 μg/m3 (29) 62.0
 
March 17, 2019, 8 p.m. 7.0 ppb (6) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 78.0 ppb (61) N/A N/A 7.0 μg/m3 (29) 61.0
 
March 17, 2019, 7 p.m. 8.4 ppb (8) 1.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 75.0 ppb (58) N/A N/A 7.6 μg/m3 (32) 58.0
 
March 17, 2019, 6 p.m. 8.6 ppb (8) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A 67.0 ppb (52) N/A N/A 7.6 μg/m3 (32) 52.0
 
March 17, 2019, 5 p.m. 8.8 ppb (8) 2.7 ppb (3) N/A 7.0 ppb (6) N/A N/A 56.0 ppb (43) N/A N/A 7.5 μg/m3 (31) 43.0
 
March 17, 2019, 4 p.m. 7.5 ppb (7) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 52.0 ppb (40) N/A N/A 6.9 μg/m3 (29) 40.0
 
March 17, 2019, 3 p.m. 7.3 ppb (7) 2.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 17, 2019, 2 p.m. 11.7 ppb (11) 3.0 ppb (3) N/A 10.0 ppb (9) N/A N/A 34.0 ppb (26) N/A N/A 8.3 μg/m3 (35) 35.0
 
March 17, 2019, 1 p.m. 11.5 ppb (11) 1.7 ppb (2) N/A 11.0 ppb (10) N/A N/A 33.0 ppb (25) N/A N/A 9.5 μg/m3 (40) 40.0
 
March 17, 2019, noon 8.2 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 35.0 ppb (27) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 17, 2019, 11 a.m. 8.5 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 42.0 ppb (32) N/A N/A 4.4 μg/m3 (18) 32.0
 
March 17, 2019, 10 a.m. 9.5 ppb (9) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A 37.0 ppb (28) N/A N/A 8.8 μg/m3 (37) 37.0
 
March 17, 2019, 9 a.m. 8.1 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) N/A N/A 12.5 μg/m3 (51) 51.0
 
March 17, 2019, 8 a.m. 7.1 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 17, 2019, 7 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) N/A N/A 23.4 μg/m3 (74) 74.0
 
March 17, 2019, 6 a.m. 9.3 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 32.0 ppb (25) N/A N/A 15.6 μg/m3 (58) 58.0
 
March 17, 2019, 5 a.m. 8.1 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 37.0 ppb (28) N/A N/A 22.3 μg/m3 (72) 72.0
 
March 17, 2019, 4 a.m. 8.3 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 47.0 ppb (36) N/A N/A 37.5 μg/m3 (105) 105.0
 
March 17, 2019, 3 a.m. 7.4 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 62.0 ppb (48) N/A N/A 21.7 μg/m3 (71) 71.0
 
March 17, 2019, 2 a.m. 9.7 ppb (9) 0.9 ppb (1) N/A 10.0 ppb (9) N/A N/A 61.0 ppb (47) N/A N/A 24.0 μg/m3 (76) 76.0
 
March 17, 2019, 1 a.m. 7.4 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 64.0 ppb (49) N/A N/A 6.8 μg/m3 (28) 49.0
 
March 17, 2019, midnight 5.0 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 70.0 ppb (54) N/A N/A 6.4 μg/m3 (27) 54.0
 
March 16, 2019, 11 p.m. 4.9 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 71.0 ppb (55) N/A N/A 6.5 μg/m3 (27) 55.0
 
March 16, 2019, 10 p.m. 5.4 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 74.0 ppb (57) N/A N/A 7.1 μg/m3 (30) 57.0
 
March 16, 2019, 9 p.m. 5.4 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 74.0 ppb (57) N/A N/A 7.7 μg/m3 (32) 57.0
 
March 16, 2019, 8 p.m. 6.1 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 74.0 ppb (57) N/A N/A 7.9 μg/m3 (33) 57.0
 
March 16, 2019, 7 p.m. 6.9 ppb (6) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 71.0 ppb (55) N/A N/A 9.7 μg/m3 (40) 55.0
 
March 16, 2019, 6 p.m. 7.6 ppb (7) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 60.0 ppb (46) N/A N/A 8.5 μg/m3 (35) 46.0
 
March 16, 2019, 5 p.m. 8.6 ppb (8) 3.3 ppb (3) N/A 6.0 ppb (6) N/A N/A 51.0 ppb (39) N/A N/A 7.9 μg/m3 (33) 39.0
 
March 16, 2019, 4 p.m. 8.5 ppb (8) 3.5 ppb (3) N/A 6.0 ppb (6) N/A N/A 48.0 ppb (37) N/A N/A 7.3 μg/m3 (30) 37.0
 
March 16, 2019, 3 p.m. 13.4 ppb (12) 5.9 ppb (5) N/A 8.0 ppb (7) N/A N/A 36.0 ppb (28) N/A N/A 5.5 μg/m3 (23) 28.0
 
March 16, 2019, 2 p.m. 7.3 ppb (7) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 4.6 μg/m3 (19) 28.0
 
March 16, 2019, 1 p.m. 6.5 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 4.3 μg/m3 (18) 27.0
 
March 16, 2019, noon 5.6 ppb (5) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 5.3 μg/m3 (22) 26.0
 
March 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 5.5 μg/m3 (23) 28.0
 
March 16, 2019, 10 a.m. 5.9 ppb (5) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A 3.5 μg/m3 (15) 29.0
 
March 16, 2019, 9 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A 3.6 μg/m3 (15) 29.0
 
March 16, 2019, 8 a.m. 5.4 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
March 16, 2019, 7 a.m. 4.5 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 6 a.m. 5.4 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) N/A N/A 6.7 μg/m3 (28) 31.0
 
March 16, 2019, 5 a.m. 5.3 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) N/A N/A 12.5 μg/m3 (51) 51.0
 
March 16, 2019, 4 a.m. 6.1 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) N/A N/A 22.3 μg/m3 (72) 72.0
 
March 16, 2019, 3 a.m. 4.7 ppb (4) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 54.0 ppb (42) N/A N/A 10.3 μg/m3 (43) 43.0
 
March 16, 2019, 2 a.m. 7.7 ppb (7) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 53.0 ppb (41) N/A N/A 7.1 μg/m3 (30) 41.0
 
March 16, 2019, 1 a.m. 5.8 ppb (5) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 58.0 ppb (45) N/A N/A 5.2 μg/m3 (22) 45.0
 
March 16, 2019, midnight 3.7 ppb (3) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 62.0 ppb (48) N/A N/A 4.4 μg/m3 (18) 48.0
 
March 15, 2019, 11 p.m. 3.4 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 63.0 ppb (48) N/A N/A 4.5 μg/m3 (19) 48.0
 
March 15, 2019, 10 p.m. 3.3 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 63.0 ppb (48) N/A N/A 4.7 μg/m3 (20) 48.0
 
March 15, 2019, 9 p.m. 3.4 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 63.0 ppb (48) N/A N/A 4.8 μg/m3 (20) 48.0
 
March 15, 2019, 8 p.m. 3.8 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 61.0 ppb (47) N/A N/A 4.5 μg/m3 (19) 47.0
 
March 15, 2019, 7 p.m. 5.6 ppb (5) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 57.0 ppb (44) N/A N/A 5.0 μg/m3 (21) 44.0
 
March 15, 2019, 6 p.m. 6.8 ppb (6) 3.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 52.0 ppb (40) N/A N/A 4.7 μg/m3 (20) 40.0
 
March 15, 2019, 5 p.m. 6.8 ppb (6) 3.3 ppb (3) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) N/A N/A 4.3 μg/m3 (18) 37.0
 
March 15, 2019, 4 p.m. 21.3 ppb (20) 11.7 ppb (11) N/A 10.0 ppb (9) N/A N/A 38.0 ppb (29) N/A N/A 7.4 μg/m3 (31) 31.0
 
March 15, 2019, 3 p.m. 39.0 ppb (36) 21.9 ppb (20) N/A 18.0 ppb (17) N/A N/A 24.0 ppb (18) N/A N/A 11.6 μg/m3 (48) 48.0
 
March 15, 2019, 2 p.m. 24.4 ppb (23) 9.9 ppb (9) N/A 15.0 ppb (14) N/A N/A 21.0 ppb (16) N/A N/A 9.5 μg/m3 (40) 40.0
 
March 15, 2019, 1 p.m. 11.0 ppb (10) 1.9 ppb (2) N/A 10.0 ppb (9) N/A N/A 22.0 ppb (17) N/A N/A 6.2 μg/m3 (26) 26.0
 
March 15, 2019, noon 5.8 ppb (5) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A 3.8 μg/m3 (16) 29.0
 
March 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.4 μg/m3 (18) 24.0