AQSQID: 560090010

Site Name: Converse County Long-Term

Location: Converse Co, WY

Reporting: True, Located: True

Current AQI: 28.0

Converse Co WY, US: 43.1, -105.5

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 22, 2019, 6 p.m. 5.1 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.11 ppb (1) 1.0 μg/m3 (1) N/A 28.0
 
March 22, 2019, 5 p.m. 5.5 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.11 ppb (1) 5.0 μg/m3 (5) N/A 27.0
 
March 22, 2019, 4 p.m. 4.0 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.11 ppb (1) 9.0 μg/m3 (8) N/A 28.0
 
March 22, 2019, 3 p.m. 3.6 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.1 ppb (1) 7.0 μg/m3 (6) N/A 23.0
 
March 22, 2019, 2 p.m. 5.5 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.1 ppb (1) 11.0 μg/m3 (10) N/A 20.0
 
March 22, 2019, 1 p.m. 2.7 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.1 ppb (1) 5.0 μg/m3 (5) N/A 22.0
 
March 22, 2019, noon 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.1 ppb (1) 3.0 μg/m3 (3) N/A 26.0
 
March 22, 2019, 11 a.m. 2.7 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 26.0
 
March 22, 2019, 10 a.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) 0.09 ppb (1) 4.0 μg/m3 (4) N/A 27.0
 
March 22, 2019, 9 a.m. 1.5 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A 3.0 μg/m3 (3) N/A 31.0
 
March 22, 2019, 8 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) 0.09 ppb (1) 2.0 μg/m3 (2) N/A 32.0
 
March 22, 2019, 7 a.m. 2.8 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.09 ppb (1) 2.0 μg/m3 (2) N/A 32.0
 
March 22, 2019, 6 a.m. 0.5 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) 0.08 ppb (1) 7.0 μg/m3 (6) N/A 32.0
 
March 22, 2019, 5 a.m. 1.2 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) 0.08 ppb (1) 7.0 μg/m3 (6) N/A 32.0
 
March 22, 2019, 4 a.m. 1.1 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) 0.08 ppb (1) 9.0 μg/m3 (8) N/A 32.0
 
March 22, 2019, 3 a.m. 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.09 ppb (1) 13.0 μg/m3 (12) N/A 32.0
 
March 22, 2019, 2 a.m. 2.2 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.09 ppb (1) 36.0 μg/m3 (33) N/A 35.0
 
March 22, 2019, 1 a.m. 1.5 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) 0.09 ppb (1) 25.0 μg/m3 (23) N/A 38.0
 
March 22, 2019, midnight 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 59.0 ppb (45) 0.11 ppb (1) 28.0 μg/m3 (25) N/A 45.0
 
March 21, 2019, 11 p.m. 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 62.0 ppb (48) 0.11 ppb (1) 15.0 μg/m3 (14) N/A 48.0
 
March 21, 2019, 10 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) 0.09 ppb (1) 9.0 μg/m3 (8) N/A 44.0
 
March 21, 2019, 9 p.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) 0.1 ppb (1) 11.0 μg/m3 (10) N/A 42.0
 
March 21, 2019, 8 p.m. 3.5 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (42) 0.1 ppb (1) 15.0 μg/m3 (14) N/A 42.0
 
March 21, 2019, 7 p.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) 0.1 ppb (1) 10.0 μg/m3 (9) N/A 40.0
 
March 21, 2019, 6 p.m. 4.7 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.11 ppb (1) 14.0 μg/m3 (13) N/A 35.0
 
March 21, 2019, 5 p.m. 3.8 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.12 ppb (1) 9.0 μg/m3 (8) N/A 34.0
 
March 21, 2019, 4 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.11 ppb (1) 3.0 μg/m3 (3) N/A 34.0
 
March 21, 2019, 3 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) 0.11 ppb (1) 1.0 μg/m3 (1) N/A 32.0
 
March 21, 2019, 2 p.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) 0.11 ppb (1) 3.0 μg/m3 (3) N/A 32.0
 
March 21, 2019, 1 p.m. 0.6 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) 0.11 ppb (1) 4.0 μg/m3 (4) N/A 34.0
 
March 21, 2019, noon 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.11 ppb (1) 1.0 μg/m3 (1) N/A 35.0
 
March 21, 2019, 11 a.m. 0.3 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.13 ppb (1) 3.0 μg/m3 (3) N/A 36.0
 
March 21, 2019, 10 a.m. 0.4 ppb (0) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.11 ppb (1) 3.0 μg/m3 (3) N/A 35.0
 
March 21, 2019, 9 a.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 0.0 μg/m3 (0) N/A 37.0
 
March 21, 2019, 8 a.m. 0.4 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) 0.11 ppb (1) -2.0 μg/m3 (0) N/A 37.0
 
March 21, 2019, 7 a.m. -0.3 ppb (0) -0.5 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) 0.11 ppb (1) -1.0 μg/m3 (0) N/A 36.0
 
March 21, 2019, 6 a.m. -0.2 ppb (0) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) 0.1 ppb (1) 2.0 μg/m3 (2) N/A 35.0
 
March 21, 2019, 5 a.m. 0.3 ppb (0) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) 0.1 ppb (1) 5.0 μg/m3 (5) N/A 35.0
 
March 21, 2019, 4 a.m. 0.4 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.11 ppb (1) 6.0 μg/m3 (5) N/A 36.0
 
March 21, 2019, 3 a.m. 1.2 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.11 ppb (1) 6.0 μg/m3 (5) N/A 35.0
 
March 21, 2019, 2 a.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.11 ppb (1) 5.0 μg/m3 (5) N/A 35.0
 
March 21, 2019, 1 a.m. 0.3 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.1 ppb (1) 2.0 μg/m3 (2) N/A 35.0
 
March 21, 2019, midnight 0.2 ppb (0) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) 0.1 ppb (1) 2.0 μg/m3 (2) N/A 38.0
 
March 20, 2019, 11 p.m. 0.2 ppb (0) -0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) 0.11 ppb (1) 4.0 μg/m3 (4) N/A 38.0
 
March 20, 2019, 10 p.m. 0.3 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.11 ppb (1) 4.0 μg/m3 (4) N/A 39.0
 
March 20, 2019, 9 p.m. 0.7 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) 0.12 ppb (1) 2.0 μg/m3 (2) N/A 41.0
 
March 20, 2019, 8 p.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) 0.12 ppb (1) 4.0 μg/m3 (4) N/A 42.0
 
March 20, 2019, 7 p.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.13 ppb (1) 4.0 μg/m3 (4) N/A 42.0
 
March 20, 2019, 6 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.14 ppb (2) 5.0 μg/m3 (5) N/A 42.0
 
March 20, 2019, 5 p.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.13 ppb (1) 1.0 μg/m3 (1) N/A 42.0
 
March 20, 2019, 4 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.14 ppb (2) 3.0 μg/m3 (3) N/A 39.0
 
March 20, 2019, 3 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) 0.14 ppb (2) 6.0 μg/m3 (5) N/A 38.0
 
March 20, 2019, 2 p.m. 0.3 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) 0.13 ppb (1) 3.0 μg/m3 (3) N/A 38.0
 
March 20, 2019, 1 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) 0.13 ppb (1) 2.0 μg/m3 (2) N/A 37.0
 
March 20, 2019, noon 0.4 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.13 ppb (1) 1.0 μg/m3 (1) N/A 36.0
 
March 20, 2019, 11 a.m. 0.4 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.15 ppb (2) -1.0 μg/m3 (0) N/A 36.0
 
March 20, 2019, 10 a.m. 0.6 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 36.0
 
March 20, 2019, 9 a.m. 0.2 ppb (0) -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A 5.0 μg/m3 (5) N/A 37.0
 
March 20, 2019, 8 a.m. 0.4 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) 0.13 ppb (1) 4.0 μg/m3 (4) N/A 37.0
 
March 20, 2019, 7 a.m. 0.3 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.13 ppb (1) 4.0 μg/m3 (4) N/A 36.0
 
March 20, 2019, 6 a.m. 0.4 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) 0.13 ppb (1) 5.0 μg/m3 (5) N/A 37.0
 
March 20, 2019, 5 a.m. 0.4 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.12 ppb (1) 5.0 μg/m3 (5) N/A 35.0
 
March 20, 2019, 4 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.12 ppb (1) 5.0 μg/m3 (5) N/A 35.0
 
March 20, 2019, 3 a.m. 0.5 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) 0.12 ppb (1) 8.0 μg/m3 (7) N/A 37.0
 
March 20, 2019, 2 a.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) 0.12 ppb (1) 6.0 μg/m3 (5) N/A 38.0
 
March 20, 2019, 1 a.m. 0.5 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) 0.13 ppb (1) 4.0 μg/m3 (4) N/A 42.0
 
March 20, 2019, midnight 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.13 ppb (1) 6.0 μg/m3 (5) N/A 44.0
 
March 19, 2019, 11 p.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.13 ppb (1) 4.0 μg/m3 (4) N/A 44.0
 
March 19, 2019, 10 p.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.14 ppb (2) 2.0 μg/m3 (2) N/A 44.0
 
March 19, 2019, 9 p.m. 1.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) 0.14 ppb (2) 4.0 μg/m3 (4) N/A 43.0
 
March 19, 2019, 8 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) 0.14 ppb (2) 1.0 μg/m3 (1) N/A 43.0
 
March 19, 2019, 7 p.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.14 ppb (2) -1.0 μg/m3 (0) N/A 44.0
 
March 19, 2019, 6 p.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) 0.14 ppb (2) 1.0 μg/m3 (1) N/A 44.0
 
March 19, 2019, 5 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.14 ppb (2) 4.0 μg/m3 (4) N/A 44.0
 
March 19, 2019, 4 p.m. 1.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) 0.14 ppb (2) 7.0 μg/m3 (6) N/A 41.0
 
March 19, 2019, 3 p.m. 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) 0.14 ppb (2) 3.0 μg/m3 (3) N/A 38.0
 
March 19, 2019, 2 p.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.13 ppb (1) 5.0 μg/m3 (5) N/A 35.0
 
March 19, 2019, 1 p.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) 0.13 ppb (1) 9.0 μg/m3 (8) N/A 33.0
 
March 19, 2019, noon 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.13 ppb (1) 8.0 μg/m3 (7) N/A 35.0
 
March 19, 2019, 11 a.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.14 ppb (2) 4.0 μg/m3 (4) N/A 35.0
 
March 19, 2019, 10 a.m. 1.1 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.12 ppb (1) 5.0 μg/m3 (5) N/A 35.0
 
March 19, 2019, 9 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 4.0 μg/m3 (4) N/A 35.0
 
March 19, 2019, 8 a.m. 0.8 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 36.0
 
March 19, 2019, 7 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.12 ppb (1) 2.0 μg/m3 (2) N/A 35.0
 
March 19, 2019, 6 a.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.11 ppb (1) 5.0 μg/m3 (5) N/A 35.0
 
March 19, 2019, 5 a.m. 1.2 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) 0.11 ppb (1) 6.0 μg/m3 (5) N/A 33.0
 
March 19, 2019, 4 a.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) 0.11 ppb (1) 8.0 μg/m3 (7) N/A 32.0
 
March 19, 2019, 3 a.m. 1.1 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) 0.13 ppb (1) 4.0 μg/m3 (4) N/A 34.0
 
March 19, 2019, 2 a.m. 1.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) 0.11 ppb (1) 3.0 μg/m3 (3) N/A 38.0
 
March 19, 2019, 1 a.m. 1.4 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) 0.12 ppb (1) 6.0 μg/m3 (5) N/A 43.0
 
March 19, 2019, midnight 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 61.0 ppb (47) 0.12 ppb (1) 8.0 μg/m3 (7) N/A 47.0
 
March 18, 2019, 11 p.m. 2.2 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 63.0 ppb (48) 0.13 ppb (1) 10.0 μg/m3 (9) N/A 48.0
 
March 18, 2019, 10 p.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 63.0 ppb (48) 0.12 ppb (1) 8.0 μg/m3 (7) N/A 48.0
 
March 18, 2019, 9 p.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 60.0 ppb (46) 0.12 ppb (1) 7.0 μg/m3 (6) N/A 46.0
 
March 18, 2019, 8 p.m. 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 59.0 ppb (45) 0.12 ppb (1) 6.0 μg/m3 (5) N/A 45.0
 
March 18, 2019, 7 p.m. 2.9 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 56.0 ppb (43) 0.14 ppb (2) 6.0 μg/m3 (5) N/A 43.0
 
March 18, 2019, 6 p.m. 3.0 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.13 ppb (1) 4.0 μg/m3 (4) N/A 38.0
 
March 18, 2019, 5 p.m. 3.5 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.13 ppb (1) 6.0 μg/m3 (5) N/A 32.0
 
March 18, 2019, 4 p.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.13 ppb (1) 10.0 μg/m3 (9) N/A 31.0
 
March 18, 2019, 3 p.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) 0.13 ppb (1) 3.0 μg/m3 (3) N/A 31.0
 
March 18, 2019, 2 p.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.12 ppb (1) 4.0 μg/m3 (4) N/A 32.0
 
March 18, 2019, 1 p.m. 4.5 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.14 ppb (2) 9.0 μg/m3 (8) N/A 29.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) N/A 5.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) N/A 5.0
 
March 18, 2019, 10 a.m. 2.6 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.11 ppb (1) 5.0 μg/m3 (5) N/A 33.0
 
March 18, 2019, 9 a.m. 2.4 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A 2.0 μg/m3 (2) N/A 34.0
 
March 18, 2019, 8 a.m. 4.2 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.11 ppb (1) 5.0 μg/m3 (5) N/A 35.0
 
March 18, 2019, 7 a.m. 5.0 ppb (5) -0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) 0.12 ppb (1) 7.0 μg/m3 (6) N/A 33.0
 
March 18, 2019, 6 a.m. 6.1 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) 0.11 ppb (1) 7.0 μg/m3 (6) N/A 32.0
 
March 18, 2019, 5 a.m. 2.2 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.1 ppb (1) 7.0 μg/m3 (6) N/A 35.0
 
March 18, 2019, 4 a.m. 2.5 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.11 ppb (1) 10.0 μg/m3 (9) N/A 35.0
 
March 18, 2019, 3 a.m. 1.8 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) 0.11 ppb (1) 16.0 μg/m3 (15) N/A 38.0
 
March 18, 2019, 2 a.m. 0.7 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) 0.1 ppb (1) 1.0 μg/m3 (1) N/A 38.0
 
March 18, 2019, 1 a.m. 0.6 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) 0.11 ppb (1) -2.0 μg/m3 (0) N/A 38.0
 
March 18, 2019, midnight 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) 0.12 ppb (1) 0.0 μg/m3 (0) N/A 41.0
 
March 17, 2019, 11 p.m. 0.7 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.12 ppb (1) 2.0 μg/m3 (2) N/A 42.0
 
March 17, 2019, 10 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.12 ppb (1) 2.0 μg/m3 (2) N/A 42.0
 
March 17, 2019, 9 p.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.12 ppb (1) 0.0 μg/m3 (0) N/A 42.0
 
March 17, 2019, 8 p.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.12 ppb (1) -3.0 μg/m3 (0) N/A 42.0
 
March 17, 2019, 7 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) 0.12 ppb (1) 1.0 μg/m3 (1) N/A 41.0
 
March 17, 2019, 6 p.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) 0.12 ppb (1) 6.0 μg/m3 (5) N/A 41.0
 
March 17, 2019, 5 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.13 ppb (1) 0.0 μg/m3 (0) N/A 39.0
 
March 17, 2019, 4 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) 0.13 ppb (1) 1.0 μg/m3 (1) N/A 38.0
 
March 17, 2019, 3 p.m. 1.0 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) 0.12 ppb (1) -1.0 μg/m3 (0) N/A 38.0
 
March 17, 2019, 2 p.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) 0.12 ppb (1) 1.0 μg/m3 (1) N/A 38.0
 
March 17, 2019, 1 p.m. 0.9 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) 0.11 ppb (1) 3.0 μg/m3 (3) N/A 38.0
 
March 17, 2019, noon 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.11 ppb (1) 2.0 μg/m3 (2) N/A 39.0
 
March 17, 2019, 11 a.m. 1.0 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.13 ppb (1) 4.0 μg/m3 (4) N/A 39.0
 
March 17, 2019, 10 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 42.0
 
March 17, 2019, 9 a.m. 1.4 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) N/A 0.0 μg/m3 (0) N/A 43.0
 
March 17, 2019, 8 a.m. 1.5 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (42) 0.11 ppb (1) 1.0 μg/m3 (1) N/A 42.0
 
March 17, 2019, 7 a.m. 2.1 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) 0.1 ppb (1) 7.0 μg/m3 (6) N/A 43.0
 
March 17, 2019, 6 a.m. 3.7 ppb (3) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 56.0 ppb (43) 0.11 ppb (1) 14.0 μg/m3 (13) N/A 43.0
 
March 17, 2019, 5 a.m. 3.5 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 58.0 ppb (45) 0.11 ppb (1) 10.0 μg/m3 (9) N/A 45.0
 
March 17, 2019, 4 a.m. 2.3 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 63.0 ppb (48) 0.1 ppb (1) 7.0 μg/m3 (6) N/A 48.0
 
March 17, 2019, 3 a.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 66.0 ppb (51) 0.1 ppb (1) 3.0 μg/m3 (3) N/A 51.0
 
March 17, 2019, 2 a.m. 1.8 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 66.0 ppb (51) 0.1 ppb (1) 4.0 μg/m3 (4) N/A 51.0
 
March 17, 2019, 1 a.m. 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 65.0 ppb (50) 0.09 ppb (1) 6.0 μg/m3 (5) N/A 50.0
 
March 17, 2019, midnight 1.5 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 63.0 ppb (48) 0.1 ppb (1) 5.0 μg/m3 (5) N/A 48.0
 
March 16, 2019, 11 p.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 61.0 ppb (47) 0.1 ppb (1) 4.0 μg/m3 (4) N/A 47.0
 
March 16, 2019, 10 p.m. 1.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) 0.11 ppb (1) 4.0 μg/m3 (4) N/A 46.0
 
March 16, 2019, 9 p.m. 1.5 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 60.0 ppb (46) 0.11 ppb (1) 3.0 μg/m3 (3) N/A 46.0
 
March 16, 2019, 8 p.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (45) 0.11 ppb (1) 2.0 μg/m3 (2) N/A 45.0
 
March 16, 2019, 7 p.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 44.0
 
March 16, 2019, 6 p.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) 0.13 ppb (1) 3.0 μg/m3 (3) N/A 42.0
 
March 16, 2019, 5 p.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) 0.14 ppb (2) 1.0 μg/m3 (1) N/A 40.0
 
March 16, 2019, 4 p.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) 0.14 ppb (2) 2.0 μg/m3 (2) N/A 38.0
 
March 16, 2019, 3 p.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) 0.14 ppb (2) 2.0 μg/m3 (2) N/A 38.0
 
March 16, 2019, 2 p.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) 0.13 ppb (1) 1.0 μg/m3 (1) N/A 38.0
 
March 16, 2019, 1 p.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) 0.13 ppb (1) 0.0 μg/m3 (0) N/A 38.0
 
March 16, 2019, noon 0.8 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) 0.13 ppb (1) 3.0 μg/m3 (3) N/A 38.0
 
March 16, 2019, 11 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.14 ppb (2) 5.0 μg/m3 (5) N/A 39.0
 
March 16, 2019, 10 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 39.0
 
March 16, 2019, 9 a.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A 2.0 μg/m3 (2) N/A 40.0
 
March 16, 2019, 8 a.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 40.0
 
March 16, 2019, 7 a.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) 0.12 ppb (1) 6.0 μg/m3 (5) N/A 40.0
 
March 16, 2019, 6 a.m. 1.0 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) 0.12 ppb (1) 9.0 μg/m3 (8) N/A 41.0
 
March 16, 2019, 5 a.m. 0.6 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 42.0
 
March 16, 2019, 4 a.m. 0.9 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) 0.12 ppb (1) 4.0 μg/m3 (4) N/A 42.0
 
March 16, 2019, 3 a.m. 1.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) 0.12 ppb (1) 9.0 μg/m3 (8) N/A 43.0
 
March 16, 2019, 2 a.m. 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) 0.11 ppb (1) 11.0 μg/m3 (10) N/A 43.0
 
March 16, 2019, 1 a.m. 1.3 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.12 ppb (1) 2.0 μg/m3 (2) N/A 44.0
 
March 16, 2019, midnight 1.3 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) 0.12 ppb (1) 2.0 μg/m3 (2) N/A 45.0
 
March 15, 2019, 11 p.m. 1.2 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 59.0 ppb (45) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 45.0
 
March 15, 2019, 10 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) 0.12 ppb (1) 2.0 μg/m3 (2) N/A 45.0
 
March 15, 2019, 9 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.12 ppb (1) 5.0 μg/m3 (5) N/A 44.0
 
March 15, 2019, 8 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.12 ppb (1) 10.0 μg/m3 (9) N/A 44.0
 
March 15, 2019, 7 p.m. 1.2 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) 0.12 ppb (1) 3.0 μg/m3 (3) N/A 42.0