AQSQID: 000091701

Site Name: Steeper

Location: 40 Hwy, CC

Reporting: False, Located: True

Current AQI: None

40 Hwy CC, CA: 53.1325, -117.09111

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 20, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 62.0 ppb (48) N/A N/A 2.6 μg/m3 (11) 48.0
 
March 20, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 61.0 ppb (47) N/A N/A 0.7 μg/m3 (3) 47.0
 
March 20, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 57.0 ppb (44) N/A N/A 3.3 μg/m3 (14) 44.0
 
March 20, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 55.0 ppb (42) N/A N/A 4.4 μg/m3 (18) 42.0
 
March 19, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 1.4 μg/m3 (6) 41.0
 
March 19, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 1.2 μg/m3 (5) 41.0
 
March 19, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 0.6 μg/m3 (2) 40.0
 
March 19, 2019, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 0.8 μg/m3 (3) 41.0
 
March 19, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 0.9 μg/m3 (4) 42.0
 
March 19, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) N/A N/A 1.6 μg/m3 (7) 42.0
 
March 19, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 58.0 ppb (45) N/A N/A 2.8 μg/m3 (12) 45.0
 
March 17, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 59.0 ppb (45) N/A N/A 0.4 μg/m3 (2) 45.0
 
March 17, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 59.0 ppb (45) N/A N/A 0.3 μg/m3 (1) 45.0
 
March 17, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 58.0 ppb (45) N/A N/A 0.5 μg/m3 (2) 45.0
 
March 17, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (44) N/A N/A 0.8 μg/m3 (3) 44.0
 
March 17, 2019, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 57.0 ppb (44) N/A N/A 0.8 μg/m3 (3) 44.0
 
March 16, 2019, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
March 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.6 μg/m3 (2) 2.0
 
March 16, 2019, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 0.6 μg/m3 (2) 39.0
 
March 16, 2019, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 1.1 μg/m3 (5) 39.0
 
March 16, 2019, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 1.0 μg/m3 (4) 40.0
 
March 14, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A -0.7 μg/m3 (0) 39.0
 
March 14, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 0.6 μg/m3 (2) 39.0
 
March 14, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A -0.3 μg/m3 (0) 39.0
 
March 14, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 0.8 μg/m3 (3) 39.0
 
March 14, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.1 μg/m3 (0) 38.0
 
March 14, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.3 μg/m3 (5) 37.0
 
March 14, 2019, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 1.7 μg/m3 (7) 36.0
 
March 14, 2019, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.4 μg/m3 (2) 35.0
 
March 14, 2019, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A -0.8 μg/m3 (0) 35.0
 
March 14, 2019, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A -0.3 μg/m3 (0) 35.0
 
March 14, 2019, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A -0.2 μg/m3 (0) 35.0
 
March 14, 2019, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A -0.2 μg/m3 (0) 35.0
 
March 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -0.7 μg/m3 (0) N/A
March 14, 2019, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A -0.2 μg/m3 (0) 36.0
 
March 14, 2019, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.3 μg/m3 (1) 1.0
 
March 14, 2019, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.3 μg/m3 (1) 1.0
 
March 14, 2019, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.4 μg/m3 (2) 2.0
 
March 14, 2019, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 1.3 μg/m3 (5) 5.0
 
March 14, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.6 μg/m3 (2) 2.0
 
March 14, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
March 14, 2019, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 1.3 μg/m3 (5) 5.0
 
March 14, 2019, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.5 μg/m3 (2) 2.0
 
March 14, 2019, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 1.2 μg/m3 (5) 36.0
 
March 13, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.5 μg/m3 (2) 37.0
 
March 13, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 0.1 μg/m3 (0) 36.0
 
March 13, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 0.1 μg/m3 (0) 36.0
 
March 13, 2019, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A -0.4 μg/m3 (0) 36.0
 
March 13, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.8 μg/m3 (3) 34.0
 
March 13, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.4 μg/m3 (10) 31.0
 
March 13, 2019, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.5 μg/m3 (6) 28.0
 
March 13, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
March 13, 2019, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 0.8 μg/m3 (3) 27.0
 
March 13, 2019, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 0.9 μg/m3 (4) 28.0
 
March 13, 2019, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 0.8 μg/m3 (3) 28.0
 
March 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.4 μg/m3 (2) 2.0
 
March 13, 2019, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 0.8 μg/m3 (3) 30.0
 
March 13, 2019, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.0 μg/m3 (8) 30.0
 
March 13, 2019, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.2 μg/m3 (9) 30.0
 
March 13, 2019, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.3 μg/m3 (5) 32.0
 
March 13, 2019, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 1.9 μg/m3 (8) 34.0
 
March 13, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.5 μg/m3 (10) 35.0
 
March 13, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.3 μg/m3 (10) 35.0
 
March 13, 2019, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.3 μg/m3 (10) 35.0
 
March 13, 2019, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
March 13, 2019, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.9 μg/m3 (12) 36.0
 
March 12, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.9 μg/m3 (4) 37.0
 
March 12, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.3 μg/m3 (1) 38.0
 
March 12, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.3 μg/m3 (1) 38.0
 
March 12, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.8 μg/m3 (3) 38.0
 
March 12, 2019, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A -0.4 μg/m3 (0) 38.0
 
March 12, 2019, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A -0.1 μg/m3 (0) 38.0
 
March 12, 2019, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.1 μg/m3 (0) 38.0
 
March 12, 2019, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A -0.2 μg/m3 (0) 38.0
 
March 12, 2019, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.3 μg/m3 (1) 37.0
 
March 12, 2019, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.6 μg/m3 (2) 37.0
 
March 12, 2019, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.1 μg/m3 (0) 37.0
 
March 12, 2019, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
March 12, 2019, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A -0.1 μg/m3 (0) 38.0
 
March 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -0.8 μg/m3 (0) N/A
March 12, 2019, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A -0.1 μg/m3 (0) 38.0
 
March 12, 2019, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A -0.4 μg/m3 (0) 38.0
 
March 12, 2019, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.6 μg/m3 (2) 38.0
 
March 12, 2019, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.3 μg/m3 (1) 38.0
 
March 12, 2019, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A -0.9 μg/m3 (0) 38.0
 
March 12, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A -0.2 μg/m3 (0) 38.0
 
March 12, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.5 μg/m3 (2) 38.0
 
March 12, 2019, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A -1.2 μg/m3 (0) 37.0
 
March 12, 2019, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A -1.6 μg/m3 (0) 36.0
 
March 12, 2019, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A -1.5 μg/m3 (0) 35.0
 
March 11, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A -0.4 μg/m3 (0) 35.0
 
March 11, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A -1.2 μg/m3 (0) 35.0
 
March 11, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A -0.9 μg/m3 (0) 34.0
 
March 11, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A -1.5 μg/m3 (0) 34.0
 
March 11, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.1 μg/m3 (0) 35.0
 
March 11, 2019, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A -0.3 μg/m3 (0) 35.0
 
March 11, 2019, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A -0.3 μg/m3 (0) 35.0
 
March 11, 2019, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 0.7 μg/m3 (3) 36.0
 
March 11, 2019, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A -0.2 μg/m3 (0) 38.0
 
March 11, 2019, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A -0.4 μg/m3 (0) 38.0
 
March 11, 2019, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A -0.3 μg/m3 (0) 38.0
 
March 11, 2019, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.2 μg/m3 (5) 38.0
 
March 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.1 μg/m3 (0) N/A
March 11, 2019, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 0.0 μg/m3 (0) 39.0
 
March 11, 2019, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 0.5 μg/m3 (2) 40.0
 
March 11, 2019, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A -1.3 μg/m3 (0) 40.0
 
March 11, 2019, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
March 11, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 0.7 μg/m3 (3) 40.0
 
March 11, 2019, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A -0.8 μg/m3 (0) 41.0
 
March 11, 2019, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A -0.6 μg/m3 (0) 40.0
 
March 11, 2019, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 0.1 μg/m3 (0) 39.0
 
March 11, 2019, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A -1.8 μg/m3 (0) N/A
March 10, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A -0.6 μg/m3 (0) 1.0
 
March 10, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 μg/m3 (0) N/A
March 10, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A -0.4 μg/m3 (0) N/A
March 10, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A -1.7 μg/m3 (0) N/A
March 10, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A -0.1 μg/m3 (0) 1.0
 
March 10, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A -0.1 μg/m3 (0) 39.0
 
March 10, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 1.1 μg/m3 (5) 38.0
 
March 10, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 1.8 μg/m3 (8) 36.0
 
March 10, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.3 μg/m3 (5) 35.0
 
March 10, 2019, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.4 μg/m3 (2) 35.0
 
March 10, 2019, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 0.1 μg/m3 (0) 33.0
 
March 10, 2019, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.2 μg/m3 (5) 33.0
 
March 10, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
March 10, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 0.9 μg/m3 (4) 33.0
 
March 10, 2019, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
March 10, 2019, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.4 μg/m3 (2) 35.0
 
March 10, 2019, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.8 μg/m3 (3) 35.0
 
March 10, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.9 μg/m3 (4) 35.0
 
March 10, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.7 μg/m3 (3) 35.0
 
March 10, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.6 μg/m3 (2) 38.0
 
March 10, 2019, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
March 10, 2019, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
March 10, 2019, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
March 9, 2019, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 0.6 μg/m3 (2) 39.0
 
March 9, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A -0.3 μg/m3 (0) 39.0
 
March 9, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A -0.6 μg/m3 (0) 39.0
 
March 9, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A -0.6 μg/m3 (0) 39.0
 
March 9, 2019, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.3 μg/m3 (1) 38.0
 
March 9, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.0 μg/m3 (4) 37.0
 
March 9, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.3 μg/m3 (10) 36.0
 
March 9, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 1.9 μg/m3 (8) 34.0
 
March 9, 2019, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.3 μg/m3 (5) 33.0
 
March 9, 2019, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.9 μg/m3 (4) 34.0
 
March 9, 2019, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.9 μg/m3 (4) 34.0
 
March 9, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.2 μg/m3 (5) 5.0
 
March 9, 2019, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.3 μg/m3 (5) 35.0
 
March 9, 2019, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
March 9, 2019, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
March 9, 2019, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 1.7 μg/m3 (7) 34.0
 
March 9, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.4 μg/m3 (2) 35.0
 
March 9, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.6 μg/m3 (2) 38.0
 
March 9, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
March 9, 2019, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 1.1 μg/m3 (5) 38.0
 
March 9, 2019, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.8 μg/m3 (3) 38.0
 
March 9, 2019, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.6 μg/m3 (2) 38.0
 
March 8, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.7 μg/m3 (3) 37.0
 
March 8, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
March 8, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.5 μg/m3 (2) 38.0
 
March 8, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
March 8, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.4 μg/m3 (6) 38.0
 
March 8, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A -0.7 μg/m3 (0) 38.0
 
March 8, 2019, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 0.1 μg/m3 (0) 36.0
 
March 8, 2019, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 0.6 μg/m3 (2) 36.0
 
March 8, 2019, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.1 μg/m3 (0) 35.0
 
March 8, 2019, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A -0.4 μg/m3 (0) 35.0
 
March 8, 2019, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.6 μg/m3 (2) 35.0