AQSQID: 560250100

Site Name: Casper

Location: Casper, WY

Reporting: True, Located: True

Current AQI: 34.0

Casper WY, US: 42.82231, -106.36501

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 19, 2019, 5 p.m. 1.7 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A N/A 34.0
 
Sept. 19, 2019, 4 p.m. 10.6 ppb (10) 4.6 ppb (4) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) N/A N/A 7.0 μg/m3 (29) 31.0
 
Sept. 19, 2019, 3 p.m. 37.7 ppb (35) 15.9 ppb (15) N/A 22.0 ppb (20) N/A N/A 14.0 ppb (11) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2019, 2 p.m. 29.4 ppb (27) 6.8 ppb (6) N/A 23.0 ppb (21) N/A N/A 10.0 ppb (8) N/A N/A 5.0 μg/m3 (21) 27.0
 
Sept. 19, 2019, 1 p.m. 24.9 ppb (23) 2.4 ppb (2) N/A 23.0 ppb (21) N/A N/A 6.0 ppb (5) N/A N/A 5.0 μg/m3 (21) 23.0
 
Sept. 19, 2019, noon 18.0 ppb (17) 1.2 ppb (1) N/A 17.0 ppb (16) N/A N/A 10.0 ppb (8) N/A N/A 3.0 μg/m3 (12) 17.0
 
Sept. 19, 2019, 11 a.m. 18.7 ppb (17) 2.2 ppb (2) N/A 17.0 ppb (16) N/A N/A 9.0 ppb (7) N/A N/A 3.0 μg/m3 (12) 17.0
 
Sept. 19, 2019, 10 a.m. 18.4 ppb (17) 1.0 ppb (1) N/A 17.0 ppb (16) N/A N/A 8.0 ppb (6) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2019, 9 a.m. 16.2 ppb (15) 0.5 ppb (0) N/A 16.0 ppb (15) N/A N/A 9.0 ppb (7) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2019, 8 a.m. 11.4 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2019, 7 a.m. 11.5 ppb (11) 0.3 ppb (0) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 5 a.m. 16.6 ppb (15) 0.4 ppb (0) N/A 16.0 ppb (15) N/A N/A 22.0 ppb (17) N/A N/A 3.0 μg/m3 (12) 17.0
 
Sept. 19, 2019, 4 a.m. 8.0 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
Sept. 19, 2019, 3 a.m. 10.3 ppb (10) 0.5 ppb (0) N/A 10.0 ppb (9) N/A N/A 34.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
Sept. 19, 2019, 2 a.m. 7.5 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 41.0 ppb (32) N/A N/A 7.0 μg/m3 (29) 32.0
 
Sept. 19, 2019, 1 a.m. 8.1 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
Sept. 19, 2019, midnight 4.8 ppb (4) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
Sept. 18, 2019, 11 p.m. 2.5 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A N/A 3.0 μg/m3 (12) 39.0
 
Sept. 18, 2019, 10 p.m. 2.8 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A N/A 1.0 μg/m3 (4) 39.0
 
Sept. 18, 2019, 9 p.m. 2.7 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A N/A 2.0 μg/m3 (8) 40.0
 
Sept. 18, 2019, 8 p.m. 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A N/A 0.0 μg/m3 (0) 39.0
 
Sept. 18, 2019, 7 p.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 1.0 μg/m3 (4) 39.0
 
Sept. 18, 2019, 6 p.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
Sept. 18, 2019, 5 p.m. 3.4 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
Sept. 18, 2019, 4 p.m. 7.9 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
Sept. 18, 2019, 3 p.m. 6.2 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
Sept. 18, 2019, 2 p.m. 4.6 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 3.0 μg/m3 (12) 26.0
 
Sept. 18, 2019, 1 p.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
Sept. 18, 2019, noon 2.7 ppb (3) 1.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
Sept. 18, 2019, 11 a.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
Sept. 18, 2019, 10 a.m. 3.1 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 3.0 μg/m3 (12) 29.0
 
Sept. 18, 2019, 9 a.m. 10.3 ppb (10) 5.1 ppb (5) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
Sept. 18, 2019, 8 a.m. 3.8 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 1.0 μg/m3 (4) 29.0
 
Sept. 18, 2019, 7 a.m. 7.2 ppb (7) 4.4 ppb (4) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A -1.0 μg/m3 (0) 28.0
 
Sept. 18, 2019, 6 a.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
Sept. 18, 2019, 5 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
Sept. 18, 2019, 4 a.m. 3.8 ppb (4) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
Sept. 18, 2019, 3 a.m. 1.6 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Sept. 18, 2019, 2 a.m. 2.6 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
Sept. 18, 2019, 1 a.m. 2.6 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
Sept. 18, 2019, midnight 4.3 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
Sept. 17, 2019, 11 p.m. 3.4 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
Sept. 17, 2019, 10 p.m. 2.2 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
Sept. 17, 2019, 9 p.m. 2.7 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
Sept. 17, 2019, 8 p.m. 2.3 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
Sept. 17, 2019, 7 p.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
Sept. 17, 2019, 6 p.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
Sept. 17, 2019, 5 p.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A -1.0 μg/m3 (0) 32.0
 
Sept. 17, 2019, 4 p.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
Sept. 17, 2019, 3 p.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
Sept. 17, 2019, 2 p.m. 2.6 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
Sept. 17, 2019, 1 p.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A N/A 2.0 μg/m3 (8) 31.0
 
Sept. 17, 2019, noon 3.0 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
Sept. 17, 2019, 11 a.m. 1.7 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
Sept. 17, 2019, 10 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A -2.0 μg/m3 (0) 38.0
 
Sept. 17, 2019, 9 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
Sept. 17, 2019, 8 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
Sept. 17, 2019, 7 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
Sept. 17, 2019, 6 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
Sept. 17, 2019, 5 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Sept. 17, 2019, 4 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
Sept. 17, 2019, 3 a.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
Sept. 17, 2019, 2 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
Sept. 17, 2019, 1 a.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
Sept. 17, 2019, midnight 6.0 ppb (6) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A N/A 2.0 μg/m3 (8) 34.0
 
Sept. 16, 2019, 11 p.m. 3.0 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
Sept. 16, 2019, 10 p.m. 3.2 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
Sept. 16, 2019, 9 p.m. 2.8 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
Sept. 16, 2019, 8 p.m. 2.2 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
Sept. 16, 2019, 7 p.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
Sept. 16, 2019, 6 p.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 3.0 μg/m3 (12) 34.0
 
Sept. 16, 2019, 5 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
Sept. 16, 2019, 4 p.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Sept. 16, 2019, 3 p.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
Sept. 16, 2019, 2 p.m. 25.6 ppb (24) 5.4 ppb (5) N/A 20.0 ppb (19) N/A N/A 19.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 24.0
 
Sept. 16, 2019, 1 p.m. 6.2 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
Sept. 16, 2019, noon 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
Sept. 16, 2019, 11 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 2.0 μg/m3 (8) 34.0
 
Sept. 16, 2019, 10 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 2.0 μg/m3 (8) 34.0
 
Sept. 16, 2019, 9 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 3.0 μg/m3 (12) 34.0
 
Sept. 16, 2019, 8 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
Sept. 16, 2019, 7 a.m. 0.2 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
 
Sept. 16, 2019, 6 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
 
Sept. 16, 2019, 5 a.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
Sept. 16, 2019, 4 a.m. 5.2 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) N/A N/A 2.0 μg/m3 (8) 30.0
 
Sept. 16, 2019, 3 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 3.0 μg/m3 (12) 33.0
 
Sept. 16, 2019, 2 a.m. 4.2 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
Sept. 16, 2019, 1 a.m. 5.1 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (34) N/A N/A 3.0 μg/m3 (12) 34.0
 
Sept. 16, 2019, midnight 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
Sept. 15, 2019, 11 p.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
Sept. 15, 2019, 10 p.m. 2.2 ppb (2) 0.6 ppb (1) 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
 
Sept. 15, 2019, 9 p.m. 3.3 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 1.0 μg/m3 (4) 37.0
 
Sept. 15, 2019, 8 p.m. 5.7 ppb (5) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
Sept. 15, 2019, 7 p.m. 3.4 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
Sept. 15, 2019, 6 p.m. 2.5 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
Sept. 15, 2019, 5 p.m. 2.3 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
Sept. 15, 2019, 4 p.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
Sept. 15, 2019, 3 p.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
Sept. 15, 2019, 2 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
Sept. 15, 2019, 1 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
Sept. 15, 2019, noon 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
Sept. 15, 2019, 11 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 2.0 μg/m3 (8) 38.0
 
Sept. 15, 2019, 10 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 0.0 μg/m3 (0) 37.0
 
Sept. 15, 2019, 9 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 2.0 μg/m3 (8) 36.0
 
Sept. 15, 2019, 8 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 2.0 μg/m3 (8) 36.0
 
Sept. 15, 2019, 7 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
Sept. 15, 2019, 6 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 2.0 μg/m3 (8) 36.0
 
Sept. 15, 2019, 5 a.m. 2.7 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 2.0 μg/m3 (8) 34.0
 
Sept. 15, 2019, 4 a.m. 7.8 ppb (7) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 35.0 ppb (27) N/A N/A -3.0 μg/m3 (0) 27.0
 
Sept. 15, 2019, 3 a.m. 4.1 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) N/A N/A -2.0 μg/m3 (0) 32.0
 
Sept. 15, 2019, 2 a.m. 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
Sept. 15, 2019, 1 a.m. 4.4 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
Sept. 15, 2019, midnight 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
Sept. 14, 2019, 11 p.m. 3.3 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
Sept. 14, 2019, 10 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 1.0 μg/m3 (4) 34.0
 
Sept. 14, 2019, 9 p.m. 2.8 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 1.0 μg/m3 (4) 33.0
 
Sept. 14, 2019, 8 p.m. 2.2 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
Sept. 14, 2019, 7 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
Sept. 14, 2019, 6 p.m. 2.4 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
Sept. 14, 2019, 5 p.m. 2.5 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
Sept. 14, 2019, 4 p.m. 3.6 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
Sept. 14, 2019, 3 p.m. 3.2 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
Sept. 14, 2019, 2 p.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
Sept. 14, 2019, 1 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
Sept. 14, 2019, noon 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 6.0 μg/m3 (25) 30.0
 
Sept. 14, 2019, 11 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Sept. 14, 2019, 10 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
Sept. 14, 2019, 9 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
Sept. 14, 2019, 8 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
Sept. 14, 2019, 7 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
Sept. 14, 2019, 6 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
Sept. 14, 2019, 5 a.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
Sept. 14, 2019, 4 a.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
Sept. 14, 2019, 3 a.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A N/A 3.0 μg/m3 (12) 36.0
 
Sept. 14, 2019, 2 a.m. 6.7 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
Sept. 14, 2019, 1 a.m. 7.9 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
Sept. 14, 2019, midnight 4.7 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
Sept. 13, 2019, 11 p.m. 4.3 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
Sept. 13, 2019, 10 p.m. 4.3 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
Sept. 13, 2019, 9 p.m. 3.1 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
Sept. 13, 2019, 8 p.m. 3.3 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
Sept. 13, 2019, 7 p.m. 2.4 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A -1.0 μg/m3 (0) 32.0
 
Sept. 13, 2019, 6 p.m. 2.4 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A -1.0 μg/m3 (0) 29.0
 
Sept. 13, 2019, 5 p.m. 2.7 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
Sept. 13, 2019, 4 p.m. 7.5 ppb (7) 3.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
Sept. 13, 2019, 3 p.m. 46.4 ppb (43) 30.9 ppb (29) N/A 15.0 ppb (14) N/A N/A 7.0 ppb (5) N/A N/A 3.0 μg/m3 (12) 43.0
 
Sept. 13, 2019, 2 p.m. 41.8 ppb (39) 28.5 ppb (26) N/A 13.0 ppb (12) N/A N/A 2.0 ppb (2) N/A N/A 2.0 μg/m3 (8) 39.0
 
Sept. 13, 2019, 1 p.m. 22.9 ppb (21) 9.4 ppb (9) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 2.0 μg/m3 (8) 21.0
 
Sept. 13, 2019, noon 16.9 ppb (16) 4.6 ppb (4) N/A 12.0 ppb (11) N/A N/A 1.0 ppb (1) N/A N/A 0.0 μg/m3 (0) 16.0
 
Sept. 13, 2019, 11 a.m. 10.1 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 3.0 ppb (2) N/A N/A -1.0 μg/m3 (0) 9.0
 
Sept. 13, 2019, 10 a.m. 9.8 ppb (9) 0.9 ppb (1) N/A 9.0 ppb (8) N/A N/A 6.0 ppb (5) N/A N/A -1.0 μg/m3 (0) 9.0
 
Sept. 13, 2019, 9 a.m. 8.8 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 13, 2019, 8 a.m. 6.5 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (11) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 7 a.m. 4.4 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2019, 6 a.m. 6.7 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) N/A N/A 2.0 μg/m3 (8) 15.0
 
Sept. 13, 2019, 5 a.m. 8.3 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (15) N/A N/A 0.0 μg/m3 (0) 15.0
 
Sept. 13, 2019, 4 a.m. 5.3 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A -1.0 μg/m3 (0) 22.0
 
Sept. 13, 2019, 3 a.m. 4.7 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
Sept. 13, 2019, 2 a.m. 7.1 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
Sept. 13, 2019, 1 a.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
Sept. 13, 2019, midnight 2.5 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
Sept. 12, 2019, 11 p.m. 1.7 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
Sept. 12, 2019, 10 p.m. 2.1 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
Sept. 12, 2019, 9 p.m. 1.5 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
Sept. 12, 2019, 8 p.m. 1.4 ppb (1) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
Sept. 12, 2019, 7 p.m. 2.5 ppb (2) 1.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A N/A 0.0 μg/m3 (0) 24.0
 
Sept. 12, 2019, 6 p.m. 2.1 ppb (2) 1.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A N/A 0.0 μg/m3 (0) 23.0