AQSQID: 560391013

Site Name: Yellowstone- Old Fai

Location: None, None

Reporting: True, Located: False

Current AQI: 17.0

None None, None: None, None

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 16, 2019, 11 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 16, 2019, 10 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
July 16, 2019, 9 p.m. 4.5 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 0.5 μg/m3 (2) 4.0
 
July 16, 2019, 8 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
July 16, 2019, 7 p.m. 3.6 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 2.5 μg/m3 (10) 10.0
 
July 16, 2019, 6 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.5 μg/m3 (10) 10.0
 
July 16, 2019, 5 p.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
July 16, 2019, 4 p.m. 2.4 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 5.4 μg/m3 (23) 23.0
 
July 16, 2019, 3 p.m. 3.9 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
July 16, 2019, 2 p.m. 6.9 ppb (6) 4.2 ppb (4) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
July 16, 2019, 1 p.m. 3.5 ppb (3) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
July 16, 2019, noon 1.4 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.2 μg/m3 (9) 9.0
 
July 16, 2019, 11 a.m. 1.1 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
July 16, 2019, 10 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 4.2 μg/m3 (18) 18.0
 
July 16, 2019, 9 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 7.4 μg/m3 (31) 31.0
 
July 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.6 μg/m3 (44) 44.0
 
July 16, 2019, 7 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.3 μg/m3 (14) 14.0
 
July 16, 2019, 6 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
July 16, 2019, 5 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
July 16, 2019, 4 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.5 μg/m3 (10) 10.0
 
July 16, 2019, 3 a.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 3.0
 
July 16, 2019, 2 a.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
July 16, 2019, 1 a.m. 1.9 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.5 μg/m3 (6) 6.0
 
July 16, 2019, midnight 2.0 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.7 μg/m3 (11) 11.0
 
July 15, 2019, 11 p.m. 1.6 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.8 μg/m3 (12) 12.0
 
July 15, 2019, 10 p.m. 3.2 ppb (3) 1.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.8 μg/m3 (16) 16.0
 
July 15, 2019, 9 p.m. 2.6 ppb (2) 1.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.5 μg/m3 (15) 15.0
 
July 15, 2019, 8 p.m. 1.8 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
July 15, 2019, 7 p.m. 2.7 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
July 15, 2019, 6 p.m. 2.2 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
July 15, 2019, 5 p.m. 2.7 ppb (3) 1.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.2 μg/m3 (9) 9.0
 
July 15, 2019, 4 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.2 μg/m3 (9) 9.0
 
July 15, 2019, 3 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 2.5 μg/m3 (10) 10.0
 
July 15, 2019, 2 p.m. 3.9 ppb (4) 1.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
July 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.2 μg/m3 (18) 18.0
 
July 15, 2019, noon 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.9 μg/m3 (8) 8.0
 
July 15, 2019, 11 a.m. 1.6 ppb (1) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.5 μg/m3 (10) 10.0
 
July 15, 2019, 10 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
July 15, 2019, 9 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
July 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (37) 37.0
 
July 15, 2019, 7 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 0.8 μg/m3 (3) 3.0
 
July 15, 2019, 6 a.m. 1.8 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
July 15, 2019, 5 a.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 2.0
 
July 15, 2019, 4 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A -0.4 μg/m3 (0) 2.0
 
July 15, 2019, 3 a.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
July 15, 2019, 2 a.m. 2.0 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.7 μg/m3 (11) 11.0
 
July 15, 2019, 1 a.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.5 μg/m3 (6) 6.0
 
July 15, 2019, midnight 2.2 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.1 μg/m3 (5) 5.0
 
July 14, 2019, 11 p.m. 1.8 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.7 μg/m3 (11) 11.0
 
July 14, 2019, 10 p.m. 2.1 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.2 μg/m3 (18) 18.0
 
July 14, 2019, 9 p.m. 3.0 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
July 14, 2019, 8 p.m. 3.0 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.9 μg/m3 (8) 8.0
 
July 14, 2019, 7 p.m. 3.6 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.6 μg/m3 (7) 7.0
 
July 14, 2019, 6 p.m. 1.9 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A -0.4 μg/m3 (0) 2.0
 
July 14, 2019, 5 p.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A -2.9 μg/m3 (0) 2.0
 
July 14, 2019, 4 p.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A -0.5 μg/m3 (0) 1.0
 
July 14, 2019, 3 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A -0.5 μg/m3 (0) 1.0
 
July 14, 2019, 2 p.m. 1.7 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 0.9 μg/m3 (4) 4.0
 
July 14, 2019, 1 p.m. 1.6 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
July 14, 2019, noon 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
July 14, 2019, 11 a.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
July 14, 2019, 10 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
July 14, 2019, 9 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 4.2 μg/m3 (18) 18.0
 
July 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, 7 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
July 14, 2019, 6 a.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, 5 a.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
July 14, 2019, 4 a.m. 1.5 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 1.0
 
July 14, 2019, 3 a.m. 4.8 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 4.0
 
July 14, 2019, 2 a.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 2.0
 
July 14, 2019, 1 a.m. 2.6 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A -0.2 μg/m3 (0) 2.0
 
July 14, 2019, midnight 2.5 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A -0.7 μg/m3 (0) 2.0
 
July 13, 2019, 11 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A -1.3 μg/m3 (0) 1.0
 
July 13, 2019, 10 p.m. 2.6 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 0.2 μg/m3 (1) 2.0
 
July 13, 2019, 9 p.m. 3.1 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
July 13, 2019, 8 p.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
July 13, 2019, 7 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.7 μg/m3 (7) 7.0
 
July 13, 2019, 6 p.m. 3.7 ppb (3) 1.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
July 13, 2019, 5 p.m. 3.7 ppb (3) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
July 13, 2019, 4 p.m. 8.2 ppb (8) 3.4 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 8.0
 
July 13, 2019, 3 p.m. 14.2 ppb (13) 8.5 ppb (8) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 0.5 μg/m3 (2) 13.0
 
July 13, 2019, 2 p.m. 20.9 ppb (19) 15.1 ppb (14) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 19.0
 
July 13, 2019, 1 p.m. 45.9 ppb (42) 39.2 ppb (36) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.1 μg/m3 (25) 42.0
 
July 13, 2019, noon 13.7 ppb (13) 10.8 ppb (10) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 1.9 μg/m3 (8) 13.0
 
July 13, 2019, 11 a.m. 8.5 ppb (8) 6.6 ppb (6) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
July 13, 2019, 10 a.m. 5.6 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 5.9 μg/m3 (25) 25.0
 
July 13, 2019, 9 a.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 5.4 μg/m3 (23) 23.0
 
July 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 13, 2019, 7 a.m. 1.8 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.7 μg/m3 (11) 11.0
 
July 13, 2019, 6 a.m. 3.7 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 3.5 μg/m3 (15) 15.0
 
July 13, 2019, 5 a.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.5 μg/m3 (15) 15.0
 
July 13, 2019, 4 a.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
July 13, 2019, 3 a.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
July 13, 2019, 2 a.m. 7.8 ppb (7) 2.4 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
July 13, 2019, 1 a.m. 6.4 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 6.0
 
July 13, 2019, midnight 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 1.0
 
July 12, 2019, 11 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.2 μg/m3 (9) 9.0
 
July 12, 2019, 10 p.m. 1.5 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.6 μg/m3 (11) 11.0
 
July 12, 2019, 9 p.m. 2.3 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 0.2 μg/m3 (1) 2.0
 
July 12, 2019, 8 p.m. 1.8 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 2.0
 
July 12, 2019, 7 p.m. 2.6 ppb (2) 1.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.9 μg/m3 (12) 12.0
 
July 12, 2019, 6 p.m. 2.1 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
July 12, 2019, 5 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
July 12, 2019, 4 p.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.9 μg/m3 (8) 8.0
 
July 12, 2019, 3 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.2 μg/m3 (5) 5.0
 
July 12, 2019, 2 p.m. 2.7 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
July 12, 2019, 1 p.m. 3.1 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
July 12, 2019, noon 2.0 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.6 μg/m3 (7) 7.0
 
July 12, 2019, 11 a.m. 1.7 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
July 12, 2019, 10 a.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.1 μg/m3 (17) 17.0
 
July 12, 2019, 9 a.m. 2.6 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
July 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.3 μg/m3 (43) 43.0
 
July 12, 2019, 7 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
July 12, 2019, 6 a.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
July 12, 2019, 5 a.m. 2.4 ppb (2) 1.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
July 12, 2019, 4 a.m. 1.4 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.6 μg/m3 (7) 7.0
 
July 12, 2019, 3 a.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
July 12, 2019, 2 a.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
July 12, 2019, 1 a.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
July 12, 2019, midnight 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.8 μg/m3 (8) 8.0
 
July 11, 2019, 11 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.9 μg/m3 (12) 12.0
 
July 11, 2019, 10 p.m. 2.4 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.6 μg/m3 (15) 15.0
 
July 11, 2019, 9 p.m. 2.3 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
July 11, 2019, 8 p.m. 2.4 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
July 11, 2019, 7 p.m. 2.1 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.9 μg/m3 (12) 12.0
 
July 11, 2019, 6 p.m. 3.3 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.2 μg/m3 (5) 5.0
 
July 11, 2019, 5 p.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.9 μg/m3 (8) 8.0
 
July 11, 2019, 4 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 5.4 μg/m3 (23) 23.0
 
July 11, 2019, 3 p.m. 3.1 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 6.6 μg/m3 (28) 28.0
 
July 11, 2019, 2 p.m. 2.9 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 4.6 μg/m3 (19) 19.0
 
July 11, 2019, 1 p.m. 3.0 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
July 11, 2019, noon 0.7 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
July 11, 2019, 11 a.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
July 11, 2019, 10 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
July 11, 2019, 9 a.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
July 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.5 μg/m3 (44) 44.0
 
July 11, 2019, 7 a.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 6.9 μg/m3 (29) 29.0
 
July 11, 2019, 6 a.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 9.5 μg/m3 (40) 40.0
 
July 11, 2019, 5 a.m. 6.1 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 8.3 μg/m3 (35) 35.0
 
July 11, 2019, 4 a.m. 4.2 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
July 11, 2019, 3 a.m. 5.0 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 4.2 μg/m3 (18) 18.0
 
July 11, 2019, 2 a.m. 3.1 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
July 11, 2019, 1 a.m. 2.4 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
July 11, 2019, midnight 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
July 10, 2019, 11 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
July 10, 2019, 10 p.m. 3.0 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.2 μg/m3 (5) 5.0
 
July 10, 2019, 9 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 2.1 μg/m3 (9) 9.0
 
July 10, 2019, 8 p.m. 2.4 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
July 10, 2019, 7 p.m. 4.4 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 2.9 μg/m3 (12) 12.0
 
July 10, 2019, 6 p.m. 2.4 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.9 μg/m3 (8) 8.0
 
July 10, 2019, 5 p.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.6 μg/m3 (11) 11.0
 
July 10, 2019, 4 p.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
July 10, 2019, 3 p.m. 2.3 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 5.9 μg/m3 (25) 25.0
 
July 10, 2019, 2 p.m. 6.7 ppb (6) 4.0 ppb (4) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 1.8 μg/m3 (8) 8.0
 
July 10, 2019, 1 p.m. 6.4 ppb (6) 3.9 ppb (4) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 2.8 μg/m3 (12) 12.0
 
July 10, 2019, noon 1.2 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 10, 2019, 11 a.m. 1.8 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
July 10, 2019, 10 a.m. 0.9 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 5.3 μg/m3 (22) 22.0
 
July 10, 2019, 9 a.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
July 10, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
July 10, 2019, 7 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 0.4 μg/m3 (2) 2.0
 
July 10, 2019, 6 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
July 10, 2019, 5 a.m. 1.5 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 6.6 μg/m3 (28) 28.0
 
July 10, 2019, 4 a.m. 2.7 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 7.3 μg/m3 (30) 30.0
 
July 10, 2019, 3 a.m. 3.1 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
July 10, 2019, 2 a.m. 3.2 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 0.9 μg/m3 (4) 4.0
 
July 10, 2019, 1 a.m. 2.7 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.6 μg/m3 (7) 7.0
 
July 10, 2019, midnight 2.6 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 2.9 μg/m3 (12) 12.0