AQSQID: 300630024

Site Name: Missoula Boyd Park

Location: Missoula, MT

Reporting: True, Located: True

Current AQI: 13.0

Missoula MT, US: 46.842297, -114.020549

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 23, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 5.0 μg/m3 (5) 0.8 μg/m3 (3) 13.0
 
Jan. 23, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 6.0 μg/m3 (5) 0.8 μg/m3 (3) 12.0
 
Jan. 23, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 15.0
 
Jan. 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 6.0 μg/m3 (5) 4.5 μg/m3 (19) 19.0
 
Jan. 23, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 6.0 μg/m3 (5) 7.1 μg/m3 (30) 30.0
 
Jan. 23, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 5.0 μg/m3 (5) 9.3 μg/m3 (39) 39.0
 
Jan. 23, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 16.0 μg/m3 (15) 9.5 μg/m3 (40) 40.0
 
Jan. 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 23.0 μg/m3 (21) 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 12.0 μg/m3 (11) 11.9 μg/m3 (50) 50.0
 
Jan. 23, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 12.0 μg/m3 (11) 11.2 μg/m3 (47) 47.0
 
Jan. 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 11.0 μg/m3 (10) 11.4 μg/m3 (48) 48.0
 
Jan. 23, 2019, noon N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 9.0 μg/m3 (8) 13.6 μg/m3 (53) 53.0
 
Jan. 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 10.0 μg/m3 (9) 13.4 μg/m3 (53) 53.0
 
Jan. 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 13.0 μg/m3 (12) 11.7 μg/m3 (49) 49.0
 
Jan. 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 13.0 μg/m3 (12) 10.7 μg/m3 (45) 45.0
 
Jan. 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 12.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 18.0 μg/m3 (16) 12.7 μg/m3 (51) 51.0
 
Jan. 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 14.0 μg/m3 (13) 11.5 μg/m3 (48) 48.0
 
Jan. 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 17.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
Jan. 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 15.0 μg/m3 (14) 12.4 μg/m3 (51) 51.0
 
Jan. 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 23.0 μg/m3 (21) 13.2 μg/m3 (53) 53.0
 
Jan. 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 11.0 μg/m3 (10) 12.2 μg/m3 (50) 50.0
 
Jan. 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 10.0 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
Jan. 23, 2019, midnight N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 9.0 μg/m3 (8) 2.8 μg/m3 (12) 12.0
 
Jan. 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 9.0 μg/m3 (8) 4.3 μg/m3 (18) 18.0
 
Jan. 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 8.0 μg/m3 (7) 5.7 μg/m3 (24) 24.0
 
Jan. 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 8.0 μg/m3 (7) 6.2 μg/m3 (26) 26.0
 
Jan. 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 5.0 μg/m3 (5) 4.2 μg/m3 (18) 18.0
 
Jan. 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 7.0 μg/m3 (6) 1.8 μg/m3 (8) 15.0
 
Jan. 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 8.0 μg/m3 (7) 3.7 μg/m3 (15) 15.0
 
Jan. 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 3.0 μg/m3 (3) 6.9 μg/m3 (29) 29.0
 
Jan. 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 4.0 μg/m3 (4) 6.9 μg/m3 (29) 29.0
 
Jan. 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 7.0 μg/m3 (6) 6.9 μg/m3 (29) 29.0
 
Jan. 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 4.0 μg/m3 (4) 7.1 μg/m3 (30) 30.0
 
Jan. 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 4.0 μg/m3 (4) 4.5 μg/m3 (19) 19.0
 
Jan. 22, 2019, noon N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Jan. 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 4.0 μg/m3 (4) 1.8 μg/m3 (8) 8.0
 
Jan. 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 3.0 μg/m3 (3) 2.3 μg/m3 (10) 10.0
 
Jan. 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 6.0 μg/m3 (5) 5.2 μg/m3 (22) 22.0
 
Jan. 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 5.0 μg/m3 (5) 2.3 μg/m3 (10) 11.0
 
Jan. 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 5.0 μg/m3 (5) 4.2 μg/m3 (18) 18.0
 
Jan. 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 7.0 μg/m3 (6) 9.5 μg/m3 (40) 40.0
 
Jan. 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 9.0 μg/m3 (8) 9.8 μg/m3 (41) 41.0
 
Jan. 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 17.0 μg/m3 (15) 4.2 μg/m3 (18) 18.0
 
Jan. 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 16.0
 
Jan. 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 5.0 μg/m3 (5) -0.6 μg/m3 (0) 18.0
 
Jan. 22, 2019, midnight N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 10.0 μg/m3 (9) -1.0 μg/m3 (0) 18.0
 
Jan. 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 7.0 μg/m3 (6) -0.8 μg/m3 (0) 18.0
 
Jan. 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 4.0 μg/m3 (4) -0.6 μg/m3 (0) 17.0
 
Jan. 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 17.0
 
Jan. 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 2.0 μg/m3 (2) 3.5 μg/m3 (15) 18.0
 
Jan. 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 4.0 μg/m3 (4) 3.5 μg/m3 (15) 15.0
 
Jan. 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 3.0 μg/m3 (3) 4.5 μg/m3 (19) 19.0
 
Jan. 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 4.0 μg/m3 (4) 4.7 μg/m3 (20) 20.0
 
Jan. 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 10.0 μg/m3 (9) 3.0 μg/m3 (12) 12.0
 
Jan. 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 12.0
 
Jan. 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 1.0 μg/m3 (1) 2.8 μg/m3 (12) 12.0
 
Jan. 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 3.0 μg/m3 (3) 2.3 μg/m3 (10) 13.0
 
Jan. 21, 2019, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 15.0
 
Jan. 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 14.0
 
Jan. 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 4.0 μg/m3 (4) 3.3 μg/m3 (14) 14.0
 
Jan. 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 12.0
 
Jan. 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 9.0 μg/m3 (8) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 11.0 μg/m3 (10) 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 10.0 μg/m3 (9) 6.2 μg/m3 (26) 26.0
 
Jan. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 5.0 μg/m3 (5) 4.5 μg/m3 (19) 19.0
 
Jan. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 7.0 μg/m3 (6) 6.6 μg/m3 (28) 28.0
 
Jan. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 8.0 μg/m3 (7) 7.1 μg/m3 (30) 30.0
 
Jan. 21, 2019, midnight N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 4.0 μg/m3 (4) 5.5 μg/m3 (23) 23.0
 
Jan. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 6.0 μg/m3 (5) 5.7 μg/m3 (24) 24.0
 
Jan. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 9.0 μg/m3 (8) 6.2 μg/m3 (26) 26.0
 
Jan. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 7.0 μg/m3 (6) 5.7 μg/m3 (24) 24.0
 
Jan. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 6.0 μg/m3 (5) 5.4 μg/m3 (23) 23.0
 
Jan. 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 10.0 μg/m3 (9) 8.3 μg/m3 (35) 35.0
 
Jan. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 11.0 μg/m3 (10) 12.4 μg/m3 (51) 51.0
 
Jan. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 11.0 μg/m3 (10) 12.7 μg/m3 (51) 51.0
 
Jan. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 13.0 μg/m3 (12) 12.4 μg/m3 (51) 51.0
 
Jan. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 13.0 μg/m3 (12) 12.4 μg/m3 (51) 51.0
 
Jan. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 25.0 μg/m3 (23) 10.5 μg/m3 (44) 44.0
 
Jan. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 16.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
Jan. 20, 2019, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 14.0 μg/m3 (13) 11.7 μg/m3 (49) 49.0
 
Jan. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 18.0 μg/m3 (16) 13.4 μg/m3 (53) 53.0
 
Jan. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 15.0 μg/m3 (14) 8.6 μg/m3 (36) 36.0
 
Jan. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 32.0 μg/m3 (29) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 13.0 μg/m3 (12) 11.9 μg/m3 (50) 50.0
 
Jan. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 18.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 20.0 μg/m3 (18) 11.7 μg/m3 (49) 49.0
 
Jan. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 27.0 μg/m3 (25) 14.2 μg/m3 (55) 55.0
 
Jan. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 13.0 μg/m3 (12) 8.8 μg/m3 (37) 37.0
 
Jan. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 15.0 μg/m3 (14) 7.6 μg/m3 (32) 32.0
 
Jan. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 22.0 μg/m3 (20) 7.4 μg/m3 (31) 31.0
 
Jan. 20, 2019, midnight N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 8.0 μg/m3 (7) 2.3 μg/m3 (10) 10.0
 
Jan. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 12.0 μg/m3 (11) 6.9 μg/m3 (29) 29.0
 
Jan. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 17.0 μg/m3 (15) 9.5 μg/m3 (40) 40.0
 
Jan. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 8.0 μg/m3 (7) 12.2 μg/m3 (50) 50.0
 
Jan. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 9.0 μg/m3 (8) 9.3 μg/m3 (39) 39.0
 
Jan. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 12.0 μg/m3 (11) 6.7 μg/m3 (28) 28.0
 
Jan. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 7.0 μg/m3 (6) 5.2 μg/m3 (22) 22.0
 
Jan. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 2.0 μg/m3 (2) 2.8 μg/m3 (12) 12.0
 
Jan. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 6.0 μg/m3 (5) 5.5 μg/m3 (23) 23.0
 
Jan. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 11.0 μg/m3 (10) 7.4 μg/m3 (31) 31.0
 
Jan. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 8.0 μg/m3 (7) 6.9 μg/m3 (29) 29.0
 
Jan. 19, 2019, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 7.0 μg/m3 (6) 8.3 μg/m3 (35) 35.0
 
Jan. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 11.0 μg/m3 (10) 8.8 μg/m3 (37) 37.0
 
Jan. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 13.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 10.0 μg/m3 (9) 10.3 μg/m3 (43) 43.0
 
Jan. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 12.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 13.0 μg/m3 (12) 10.5 μg/m3 (44) 44.0
 
Jan. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 27.0 μg/m3 (25) 25.2 μg/m3 (78) 78.0
 
Jan. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 13.0 μg/m3 (12) 12.7 μg/m3 (51) 51.0
 
Jan. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
Jan. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 19.0 μg/m3 (17) 8.8 μg/m3 (37) 37.0
 
Jan. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 15.0 μg/m3 (14) 6.4 μg/m3 (27) 27.0
 
Jan. 19, 2019, midnight N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 18.0 μg/m3 (16) 1.3 μg/m3 (5) 16.0
 
Jan. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 34.0 μg/m3 (31) 22.1 μg/m3 (71) 71.0
 
Jan. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 19.0 μg/m3 (17) 10.5 μg/m3 (44) 44.0
 
Jan. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 51.0 μg/m3 (46) 37.4 μg/m3 (105) 105.0
 
Jan. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 60.0 μg/m3 (52) 38.6 μg/m3 (108) 108.0
 
Jan. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 47.0 μg/m3 (43) 30.9 μg/m3 (90) 90.0
 
Jan. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 48.0 μg/m3 (44) 30.7 μg/m3 (90) 90.0
 
Jan. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 39.0 μg/m3 (35) 27.5 μg/m3 (83) 83.0
 
Jan. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 29.0 μg/m3 (26) 17.0 μg/m3 (61) 61.0
 
Jan. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 29.0 μg/m3 (26) 17.0 μg/m3 (61) 61.0
 
Jan. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 26.0 μg/m3 (24) 19.7 μg/m3 (66) 66.0
 
Jan. 18, 2019, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 28.0 μg/m3 (25) 17.2 μg/m3 (61) 61.0
 
Jan. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 16.0 μg/m3 (15) 18.2 μg/m3 (63) 63.0
 
Jan. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 27.0 μg/m3 (25) 24.0 μg/m3 (76) 76.0
 
Jan. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 20.0 μg/m3 (18) 18.9 μg/m3 (65) 65.0
 
Jan. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 25.0 μg/m3 (23) 20.7 μg/m3 (69) 69.0
 
Jan. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 23.0 μg/m3 (21) 19.2 μg/m3 (65) 65.0
 
Jan. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 27.0 μg/m3 (25) 16.7 μg/m3 (60) 60.0
 
Jan. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 27.0 μg/m3 (25) 19.2 μg/m3 (65) 65.0
 
Jan. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 28.0 μg/m3 (25) 18.9 μg/m3 (65) 65.0
 
Jan. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 19.0 μg/m3 (17) 19.4 μg/m3 (66) 66.0
 
Jan. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 19.0 μg/m3 (17) 16.7 μg/m3 (60) 60.0
 
Jan. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 19.0 μg/m3 (17) 16.2 μg/m3 (59) 59.0
 
Jan. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 21.0 μg/m3 (19) 13.7 μg/m3 (54) 54.0
 
Jan. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 22.0 μg/m3 (20) 13.4 μg/m3 (53) 53.0
 
Jan. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 27.0 μg/m3 (25) 15.4 μg/m3 (57) 57.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 18.0 μg/m3 (16) 20.4 μg/m3 (68) 68.0
 
Jan. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 25.0 μg/m3 (23) 13.9 μg/m3 (54) 54.0
 
Jan. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 29.0 μg/m3 (26) 17.9 μg/m3 (63) 63.0
 
Jan. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 17.0 μg/m3 (15) 21.5 μg/m3 (70) 70.0
 
Jan. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 23.0 μg/m3 (21) 18.7 μg/m3 (64) 64.0
 
Jan. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 27.0 μg/m3 (25) 18.2 μg/m3 (63) 63.0
 
Jan. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 19.0 μg/m3 (17) 20.8 μg/m3 (69) 69.0
 
Jan. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 28.0 μg/m3 (25) 14.9 μg/m3 (56) 56.0
 
Jan. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 23.0 μg/m3 (21) 17.2 μg/m3 (61) 61.0
 
Jan. 17, 2019, noon N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 20.0 μg/m3 (18) 19.2 μg/m3 (65) 65.0
 
Jan. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 27.0 μg/m3 (25) 14.2 μg/m3 (55) 55.0
 
Jan. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 19.0 μg/m3 (17) 17.5 μg/m3 (62) 62.0
 
Jan. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 27.0 μg/m3 (25) 18.9 μg/m3 (65) 65.0
 
Jan. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
Jan. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 44.0 μg/m3 (40) 22.3 μg/m3 (72) 72.0
 
Jan. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 43.0 μg/m3 (39) 19.2 μg/m3 (65) 65.0
 
Jan. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 37.0 μg/m3 (34) 17.2 μg/m3 (61) 61.0
 
Jan. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 30.0 μg/m3 (27) 17.2 μg/m3 (61) 61.0
 
Jan. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 43.0 μg/m3 (39) 13.6 μg/m3 (53) 53.0
 
Jan. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 42.0 μg/m3 (38) 14.1 μg/m3 (54) 54.0
 
Jan. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 46.0 μg/m3 (42) 14.2 μg/m3 (55) 55.0
 
Jan. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 32.0 μg/m3 (29) 12.7 μg/m3 (51) 51.0