AQSQID: 320031019

Site Name: Jean

Location: Clark Co, NV

Reporting: True, Located: True

Current AQI: 40.0

Clark Co NV, US: 35.78, -115.34

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 40.0
 
March 23, 2019, 7 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) 2.1 μg/m3 (9) 42.0
 
March 23, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 42.0
 
March 23, 2019, 5 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) 2.9 μg/m3 (12) 38.0
 
March 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 10.0 μg/m3 (9) 3.2 μg/m3 (13) 36.0
 
March 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 33.0
 
March 23, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 27.0
 
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 7.0 μg/m3 (6) 2.3 μg/m3 (10) 25.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 25.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 5.0 μg/m3 (5) 1.6 μg/m3 (7) 22.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 6.0 μg/m3 (5) 1.7 μg/m3 (7) 23.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 1.7 μg/m3 (7) 25.0
 
March 23, 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) 1.6 μg/m3 (7) 28.0
 
March 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 1.6 μg/m3 (7) 28.0
 
March 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 1.6 μg/m3 (7) 27.0
 
March 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 6.0 μg/m3 (5) 1.5 μg/m3 (6) 29.0
 
March 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) 1.4 μg/m3 (6) 29.0
 
March 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 5.0 μg/m3 (5) 1.2 μg/m3 (5) 29.0
 
March 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 35.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 40.0
 
March 23, 2019, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 3.0 μg/m3 (3) 0.9 μg/m3 (4) 41.0
 
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 2.0 μg/m3 (2) 0.8 μg/m3 (3) 41.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 41.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 40.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 5.0 μg/m3 (5) 1.6 μg/m3 (7) 38.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 3.0 μg/m3 (3) 1.4 μg/m3 (6) 38.0
 
March 22, 2019, 6 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) 1.7 μg/m3 (7) 37.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 37.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 2.6 μg/m3 (11) 34.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 32.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 3.4 μg/m3 (14) 30.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 28.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 7.0 μg/m3 (6) 2.6 μg/m3 (11) 31.0
 
March 22, 2019, 11 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) 2.6 μg/m3 (11) 30.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 2.5 μg/m3 (10) 29.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) 2.4 μg/m3 (10) 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) 2.2 μg/m3 (9) 30.0
 
March 22, 2019, 7 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) 1.9 μg/m3 (8) 33.0
 
March 22, 2019, 6 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) 1.7 μg/m3 (7) 33.0
 
March 22, 2019, 5 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) 1.5 μg/m3 (6) 35.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 5.0 μg/m3 (5) 1.4 μg/m3 (6) 33.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 5.0 μg/m3 (5) 1.4 μg/m3 (6) 35.0
 
March 22, 2019, 2 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) 2.6 μg/m3 (11) 38.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 8.0 μg/m3 (7) 1.7 μg/m3 (7) 40.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 8.0 μg/m3 (7) 1.4 μg/m3 (6) 42.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 6.0 μg/m3 (5) 1.3 μg/m3 (5) 42.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 8.0 μg/m3 (7) 2.1 μg/m3 (9) 42.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 5.0 μg/m3 (5) 2.2 μg/m3 (9) 42.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 41.0
 
March 21, 2019, 7 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) 1.8 μg/m3 (8) 40.0
 
March 21, 2019, 6 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) 1.7 μg/m3 (7) 39.0
 
March 21, 2019, 5 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) 1.5 μg/m3 (6) 38.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 38.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 35.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 33.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 35.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 33.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 35.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 32.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (6) 33.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (7) 38.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 3.0 μg/m3 (3) 1.4 μg/m3 (6) 37.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 38.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 8.0 μg/m3 (7) 2.9 μg/m3 (12) 36.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 5.0 μg/m3 (5) 2.2 μg/m3 (9) 28.0
 
March 21, 2019, 3 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) 2.1 μg/m3 (9) 30.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 2.2 μg/m3 (9) 32.0
 
March 21, 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) 2.3 μg/m3 (10) 33.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 32.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 32.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 33.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 2.8 μg/m3 (12) 33.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 9.0 μg/m3 (8) 2.9 μg/m3 (12) 32.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 12.0 μg/m3 (11) 3.4 μg/m3 (14) 37.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 14.0 μg/m3 (13) 4.7 μg/m3 (20) 35.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 16.0 μg/m3 (15) 4.7 μg/m3 (20) 32.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 30.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 12.0 μg/m3 (11) 3.8 μg/m3 (16) 25.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 3.7 μg/m3 (15) 28.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 3.5 μg/m3 (15) 28.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.0 μg/m3 (9) 3.4 μg/m3 (14) 25.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 10.0 μg/m3 (9) 3.2 μg/m3 (13) 23.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 9.0 μg/m3 (8) 3.1 μg/m3 (13) 25.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 9.0 μg/m3 (8) 3.1 μg/m3 (13) 26.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 12.0 μg/m3 (11) 3.1 μg/m3 (13) 27.0
 
March 20, 2019, 7 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) 3.1 μg/m3 (13) 31.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 35.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 9.0 μg/m3 (8) 2.8 μg/m3 (12) 34.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 8.0 μg/m3 (7) 2.7 μg/m3 (11) 33.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 31.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 11.0 μg/m3 (10) 3.1 μg/m3 (13) 32.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 10.0 μg/m3 (9) 2.8 μg/m3 (12) 36.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 10.0 μg/m3 (9) 2.8 μg/m3 (12) 39.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 8.0 μg/m3 (7) 2.5 μg/m3 (10) 41.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 12.0 μg/m3 (11) 3.3 μg/m3 (14) 42.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 14.0 μg/m3 (13) 3.8 μg/m3 (16) 41.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 17.0 μg/m3 (15) 3.4 μg/m3 (14) 38.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 15.0 μg/m3 (14) 3.4 μg/m3 (14) 35.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 12.0 μg/m3 (11) 3.1 μg/m3 (13) 35.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 11.0 μg/m3 (10) 2.9 μg/m3 (12) 35.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 19.0 μg/m3 (17) 4.1 μg/m3 (17) 29.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (37) 5.1 μg/m3 (21) 37.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 13.0 μg/m3 (12) 3.7 μg/m3 (15) 25.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 3.4 μg/m3 (14) 24.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) 3.2 μg/m3 (13) 24.0
 
March 19, 2019, 11 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) 3.1 μg/m3 (13) 25.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 9.0 μg/m3 (8) 3.1 μg/m3 (13) 26.0
 
March 19, 2019, 9 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) 3.2 μg/m3 (13) 28.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 3.4 μg/m3 (14) 28.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 12.0 μg/m3 (11) 3.4 μg/m3 (14) 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 11.0 μg/m3 (10) 3.2 μg/m3 (13) 28.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 11.0 μg/m3 (10) 3.2 μg/m3 (13) 29.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 12.0 μg/m3 (11) 3.3 μg/m3 (14) 31.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 12.0 μg/m3 (11) 3.4 μg/m3 (14) 32.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 12.0 μg/m3 (11) 3.0 μg/m3 (12) 34.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 9.0 μg/m3 (8) 2.8 μg/m3 (12) 38.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 9.0 μg/m3 (8) 2.9 μg/m3 (12) 41.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 19.0 μg/m3 (17) 3.5 μg/m3 (15) 42.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 13.0 μg/m3 (12) 3.1 μg/m3 (13) 43.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 12.0 μg/m3 (11) 3.2 μg/m3 (13) 43.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 13.0 μg/m3 (12) 3.2 μg/m3 (13) 41.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 17.0 μg/m3 (15) 3.4 μg/m3 (14) 40.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 16.0 μg/m3 (15) 3.5 μg/m3 (15) 35.0
 
March 18, 2019, 5 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) 3.5 μg/m3 (15) 28.0
 
March 18, 2019, 4 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) 3.7 μg/m3 (15) 24.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 11.0 μg/m3 (10) 3.4 μg/m3 (14) 27.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 11.0 μg/m3 (10) 3.3 μg/m3 (14) 23.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 22.0
 
March 18, 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) 3.2 μg/m3 (13) 22.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 11.0 μg/m3 (10) 3.3 μg/m3 (14) 22.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.0 μg/m3 (9) 3.3 μg/m3 (14) 25.0
 
March 18, 2019, 9 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) 3.4 μg/m3 (14) 25.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 11.0 μg/m3 (10) 3.5 μg/m3 (15) 25.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 3.4 μg/m3 (14) 25.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 3.4 μg/m3 (14) 28.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 13.0 μg/m3 (12) 3.5 μg/m3 (15) 30.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 16.0 μg/m3 (15) 3.5 μg/m3 (15) 31.0
 
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) 3.5 μg/m3 (15) 32.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 12.0 μg/m3 (11) 3.3 μg/m3 (14) 35.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 12.0 μg/m3 (11) 3.3 μg/m3 (14) 38.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 14.0 μg/m3 (13) 3.3 μg/m3 (14) 42.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 15.0 μg/m3 (14) 3.3 μg/m3 (14) 42.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 11.0 μg/m3 (10) 3.1 μg/m3 (13) 42.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 42.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 10.0 μg/m3 (9) 2.9 μg/m3 (12) 41.0
 
March 17, 2019, 7 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) 2.8 μg/m3 (12) 38.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 7.0 μg/m3 (6) 2.4 μg/m3 (10) 38.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 7.0 μg/m3 (6) 2.3 μg/m3 (10) 38.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 15.0 μg/m3 (14) 3.1 μg/m3 (13) 34.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 66.0 μg/m3 (56) 5.4 μg/m3 (23) 56.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 30.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 2.6 μg/m3 (11) 29.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 30.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 31.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 12.0 μg/m3 (11) 3.2 μg/m3 (13) 28.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 11.0 μg/m3 (10) 3.2 μg/m3 (13) 29.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 9.0 μg/m3 (8) 3.1 μg/m3 (13) 32.0
 
March 17, 2019, 7 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) 3.2 μg/m3 (13) 33.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 16.0 μg/m3 (15) 3.3 μg/m3 (14) 33.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 14.0 μg/m3 (13) 3.4 μg/m3 (14) 33.0
 
March 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 15.0 μg/m3 (14) 3.4 μg/m3 (14) 32.0
 
March 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 17.0 μg/m3 (15) 3.6 μg/m3 (15) 32.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 14.0 μg/m3 (13) 3.5 μg/m3 (15) 35.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 18.0 μg/m3 (16) 3.6 μg/m3 (15) 38.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 13.0 μg/m3 (12) 3.4 μg/m3 (14) 41.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 15.0 μg/m3 (14) 3.4 μg/m3 (14) 41.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 14.0 μg/m3 (13) 3.2 μg/m3 (13) 42.0
 
March 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 13.0 μg/m3 (12) 3.0 μg/m3 (12) 42.0