AQSQID: 081030006

Site Name: Rangely, Co

Location: Rangely, CO

Reporting: True, Located: True

Current AQI: 35.0

Rangely CO, US: 40.086941, -108.761002

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 20, 2019, 7 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 8.0 μg/m3 (33) 35.0
 
March 20, 2019, 6 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 5 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 4 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, 3 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 9.0 μg/m3 (38) 39.0
 
March 20, 2019, 2 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 7.0 μg/m3 (29) 38.0
 
March 20, 2019, 1 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 7.0 μg/m3 (29) 41.0
 
March 20, 2019, midnight 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 8.0 μg/m3 (33) 42.0
 
March 19, 2019, 11 p.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 9.0 μg/m3 (38) 43.0
 
March 19, 2019, 10 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 9.0 μg/m3 (38) 44.0
 
March 19, 2019, 9 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 8 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 7 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 6 p.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 5 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 4 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 3 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 2 p.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 1 p.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 8.0 μg/m3 (33) 35.0
 
March 19, 2019, noon 1.5 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 7.0 μg/m3 (29) 35.0
 
March 19, 2019, 11 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
March 19, 2019, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 7.0 μg/m3 (29) 36.0
 
March 19, 2019, 9 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 8 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 7.0 μg/m3 (29) 37.0
 
March 19, 2019, 7 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
March 19, 2019, 6 a.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 5 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 4 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 19, 2019, 3 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A -2.0 μg/m3 (0) 35.0
 
March 19, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
March 19, 2019, 1 a.m. 1.6 ppb (1) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A 7.0 μg/m3 (29) 38.0
 
March 19, 2019, midnight 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 11 p.m. 2.9 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 62.0 ppb (48) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 10 p.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (45) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 9 p.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 8 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 18, 2019, 7 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 19.0 μg/m3 (65) 65.0
 
March 18, 2019, 6 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 19.0 μg/m3 (65) 65.0
 
March 18, 2019, 5 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 4 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 3 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (21) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 2 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 1 p.m. 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 11 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 10 a.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 9 a.m. 2.2 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 8 a.m. 3.7 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 7 a.m. 4.4 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 6 a.m. 3.1 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 5 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 18, 2019, 4 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A -2.0 μg/m3 (0) 28.0
 
March 18, 2019, 3 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A N/A 33.0
 
March 18, 2019, 2 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
March 18, 2019, 1 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
March 18, 2019, midnight 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 11 p.m. 2.0 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 10 p.m. 2.2 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 9 p.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) N/A N/A 20.0 μg/m3 (67) 67.0
 
March 17, 2019, 8 p.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (42) N/A N/A 24.0 μg/m3 (76) 76.0
 
March 17, 2019, 7 p.m. 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 17, 2019, 6 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 5 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 4 p.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 3 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 2 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, noon 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 11 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
March 17, 2019, 9 a.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 17, 2019, 8 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 7 a.m. 3.2 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 6 a.m. 6.6 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 5 a.m. 10.0 ppb (9) 0.1 ppb (0) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 4 a.m. 6.5 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 3 a.m. 4.4 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
March 17, 2019, 2 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
March 17, 2019, 1 a.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
March 17, 2019, midnight 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 16, 2019, 11 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 16, 2019, 10 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 17.0 μg/m3 (61) 61.0
 
March 16, 2019, 9 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 16, 2019, 8 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 9.0 μg/m3 (38) 39.0
 
March 16, 2019, 7 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 16, 2019, 6 p.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 5 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 16, 2019, 4 p.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 16, 2019, 3 p.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 16, 2019, 2 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 1 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 16, 2019, noon 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 16, 2019, 11 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A N/A 6.0 μg/m3 (25) 26.0
 
March 16, 2019, 10 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
March 16, 2019, 9 a.m. 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
March 16, 2019, 8 a.m. 3.3 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) N/A N/A 3.0 μg/m3 (12) 23.0
 
March 16, 2019, 7 a.m. 4.7 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 16, 2019, 6 a.m. 4.4 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 16, 2019, 5 a.m. 2.7 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 16, 2019, 4 a.m. 4.9 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 16, 2019, 3 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 8.0 μg/m3 (33) 35.0
 
March 16, 2019, 2 a.m. 1.6 ppb (1) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 7.0 μg/m3 (29) 38.0
 
March 16, 2019, 1 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A N/A 38.0
 
March 16, 2019, midnight 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A N/A 9.0 μg/m3 (38) 42.0
 
March 15, 2019, 11 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A N/A 9.0 μg/m3 (38) 42.0
 
March 15, 2019, 10 p.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 9.0 μg/m3 (38) 41.0
 
March 15, 2019, 9 p.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 7.0 μg/m3 (29) 39.0
 
March 15, 2019, 8 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 8.0 μg/m3 (33) 37.0
 
March 15, 2019, 7 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 15, 2019, 6 p.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 15, 2019, 5 p.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 15, 2019, 4 p.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 15, 2019, 3 p.m. 1.4 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 2 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 1 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 15, 2019, 11 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
March 15, 2019, 10 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
March 15, 2019, 9 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 8 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 15, 2019, 7 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 7.0 μg/m3 (29) 31.0
 
March 15, 2019, 6 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
March 15, 2019, 5 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 4 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 15, 2019, 3 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
March 15, 2019, 2 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 8.0 μg/m3 (33) 36.0
 
March 15, 2019, 1 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 15, 2019, midnight 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
March 14, 2019, 11 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
March 14, 2019, 10 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 8.0 μg/m3 (33) 38.0
 
March 14, 2019, 9 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 14, 2019, 8 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 14, 2019, 7 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 14, 2019, 6 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 14, 2019, 5 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 14, 2019, 4 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 7.0 μg/m3 (29) 38.0
 
March 14, 2019, 3 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
March 14, 2019, 2 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
March 14, 2019, 1 p.m. 2.7 ppb (3) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 7.0 μg/m3 (29) 35.0
 
March 14, 2019, noon 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 8.0 μg/m3 (33) 38.0
 
March 14, 2019, 11 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 6.0 μg/m3 (25) 37.0
 
March 14, 2019, 10 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 7.0 μg/m3 (29) 38.0
 
March 14, 2019, 9 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 7.0 μg/m3 (29) 37.0
 
March 14, 2019, 8 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
March 14, 2019, 7 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
March 14, 2019, 6 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 7.0 μg/m3 (29) 35.0
 
March 14, 2019, 5 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 7.0 μg/m3 (29) 35.0
 
March 14, 2019, 4 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
March 14, 2019, 3 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
March 14, 2019, 2 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
March 14, 2019, 1 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
March 14, 2019, midnight 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 7.0 μg/m3 (29) 40.0
 
March 13, 2019, 11 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 7.0 μg/m3 (29) 41.0
 
March 13, 2019, 10 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
March 13, 2019, 9 p.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) N/A N/A 7.0 μg/m3 (29) 42.0
 
March 13, 2019, 8 p.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 57.0 ppb (44) N/A N/A 6.0 μg/m3 (25) 44.0
 
March 13, 2019, 7 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 7.0 μg/m3 (29) 41.0
 
March 13, 2019, 6 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A N/A 9.0 μg/m3 (38) 39.0
 
March 13, 2019, 5 p.m. 7.4 ppb (7) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (35) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 13, 2019, 4 p.m. 11.4 ppb (11) 2.2 ppb (2) N/A 9.0 ppb (8) N/A N/A 42.0 ppb (32) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 13, 2019, 3 p.m. 8.1 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A 44.0 ppb (34) N/A N/A N/A 34.0
 
March 13, 2019, 2 p.m. 3.1 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A N/A N/A 36.0
 
March 13, 2019, 1 p.m. 2.6 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A N/A N/A 35.0
 
March 13, 2019, noon 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 13, 2019, 11 a.m. 2.5 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 13, 2019, 10 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 13, 2019, 9 a.m. 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 13, 2019, 8 a.m. 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A N/A 7.0 μg/m3 (29) 29.0