AQSQID: 300630024

Site Name: Missoula Boyd Park

Location: Missoula, MT

Reporting: True, Located: True

Current AQI: 56.0

Missoula MT, US: 46.842297, -114.020549

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 23, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 66.0 μg/m3 (56) 12.7 μg/m3 (51) 56.0
 
March 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 65.0 μg/m3 (55) 13.5 μg/m3 (53) 55.0
 
March 23, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 50.0 μg/m3 (45) 11.0 μg/m3 (46) 46.0
 
March 23, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 80.0 μg/m3 (62) 8.6 μg/m3 (36) 62.0
 
March 23, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 74.0 μg/m3 (60) 15.4 μg/m3 (57) 60.0
 
March 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 68.0 μg/m3 (56) 12.7 μg/m3 (51) 56.0
 
March 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 63.0 μg/m3 (54) 15.2 μg/m3 (57) 57.0
 
March 23, 2019, 2 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) 16.4 μg/m3 (59) 59.0
 
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 41.0 μg/m3 (37) 11.7 μg/m3 (49) 49.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 32.0 μg/m3 (29) 9.8 μg/m3 (41) 41.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 37.0 μg/m3 (34) 8.8 μg/m3 (37) 37.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 47.0 μg/m3 (43) 9.1 μg/m3 (38) 43.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 61.0 μg/m3 (53) 7.8 μg/m3 (32) 53.0
 
March 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 66.0 μg/m3 (56) 18.9 μg/m3 (65) 65.0
 
March 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 98.0 μg/m3 (72) 13.9 μg/m3 (54) 72.0
 
March 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 139.0 μg/m3 (92) 28.0 μg/m3 (84) 92.0
 
March 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 133.0 μg/m3 (89) 24.3 μg/m3 (76) 89.0
 
March 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 69.0 μg/m3 (57) 10.0 μg/m3 (42) 57.0
 
March 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 123.0 μg/m3 (84) 12.5 μg/m3 (51) 84.0
 
March 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 19.0 μg/m3 (65) 65.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 68.0 μg/m3 (56) 9.6 μg/m3 (40) 56.0
 
March 23, 2019, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 48.0 μg/m3 (44) 4.5 μg/m3 (19) 44.0
 
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 44.0 μg/m3 (40) 2.6 μg/m3 (11) 40.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 44.0 μg/m3 (40) 6.5 μg/m3 (27) 40.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 45.0 μg/m3 (41) 6.9 μg/m3 (29) 41.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 47.0 μg/m3 (43) 8.6 μg/m3 (36) 43.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 63.0 μg/m3 (54) 11.5 μg/m3 (48) 54.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 66.0 μg/m3 (56) 12.0 μg/m3 (50) 56.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 62.0 μg/m3 (54) 12.5 μg/m3 (51) 54.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 60.0 μg/m3 (52) 16.2 μg/m3 (59) 59.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 86.0 μg/m3 (66) 13.2 μg/m3 (53) 66.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 148.0 μg/m3 (96) 9.5 μg/m3 (40) 96.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 71.0 μg/m3 (58) 9.0 μg/m3 (38) 58.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 44.0 μg/m3 (40) 11.2 μg/m3 (47) 47.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 38.0 μg/m3 (35) 12.2 μg/m3 (50) 50.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 50.0 μg/m3 (45) 12.0 μg/m3 (50) 50.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 48.0 μg/m3 (44) 13.2 μg/m3 (53) 53.0
 
March 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 64.0 μg/m3 (54) 14.9 μg/m3 (56) 56.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 76.0 μg/m3 (60) 24.0 μg/m3 (76) 76.0
 
March 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 124.0 μg/m3 (84) 35.2 μg/m3 (99) 99.0
 
March 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 111.0 μg/m3 (78) 20.4 μg/m3 (68) 78.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 165.0 μg/m3 (105) 11.0 μg/m3 (46) 105.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 210.0 μg/m3 (128) 22.3 μg/m3 (72) 128.0
 
March 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 24.3 μg/m3 (76) 76.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 106.0 μg/m3 (76) 8.3 μg/m3 (35) 76.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 62.0 μg/m3 (54) 6.0 μg/m3 (25) 54.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 39.0 μg/m3 (35) 7.6 μg/m3 (32) 35.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 57.0 μg/m3 (51) 8.6 μg/m3 (36) 51.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 48.0 μg/m3 (44) 9.3 μg/m3 (39) 44.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 57.0 μg/m3 (51) 10.8 μg/m3 (45) 51.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 46.0 μg/m3 (42) 11.5 μg/m3 (48) 48.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 43.0 μg/m3 (39) 11.3 μg/m3 (47) 47.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 65.0 μg/m3 (55) 11.2 μg/m3 (47) 55.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 55.0 μg/m3 (50) 12.5 μg/m3 (51) 51.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 50.0 μg/m3 (45) 11.0 μg/m3 (46) 46.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 176.0 μg/m3 (110) 8.8 μg/m3 (37) 110.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 127.0 μg/m3 (86) 7.2 μg/m3 (30) 86.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 36.0 μg/m3 (33) 6.2 μg/m3 (26) 33.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 39.0 μg/m3 (35) 5.0 μg/m3 (21) 35.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 24.0 μg/m3 (22) 4.5 μg/m3 (19) 22.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 44.0 μg/m3 (40) 5.5 μg/m3 (23) 40.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 44.0 μg/m3 (40) 9.5 μg/m3 (40) 40.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 90.0 μg/m3 (68) 13.2 μg/m3 (53) 68.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 120.0 μg/m3 (82) 17.7 μg/m3 (62) 82.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 148.0 μg/m3 (96) 17.9 μg/m3 (63) 96.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 181.0 μg/m3 (113) 18.0 μg/m3 (63) 113.0
 
March 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 230.0 μg/m3 (138) 19.5 μg/m3 (66) 138.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 21.8 μg/m3 (71) 71.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 91.0 μg/m3 (68) 12.7 μg/m3 (51) 68.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 83.0 μg/m3 (64) 10.1 μg/m3 (42) 64.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 83.0 μg/m3 (64) 9.1 μg/m3 (38) 64.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 58.0 μg/m3 (52) 6.2 μg/m3 (26) 52.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 65.0 μg/m3 (55) 6.2 μg/m3 (26) 55.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 57.0 μg/m3 (51) 9.8 μg/m3 (41) 51.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 57.0 μg/m3 (51) 12.5 μg/m3 (51) 51.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 42.0 μg/m3 (38) 14.2 μg/m3 (55) 55.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 38.0 μg/m3 (35) 13.2 μg/m3 (53) 53.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 61.0 μg/m3 (53) 10.5 μg/m3 (44) 53.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 58.0 μg/m3 (52) 10.2 μg/m3 (42) 52.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 76.0 μg/m3 (60) 10.5 μg/m3 (44) 60.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 78.0 μg/m3 (62) 7.6 μg/m3 (32) 62.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 34.0 μg/m3 (31) 8.3 μg/m3 (35) 35.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 37.0 μg/m3 (34) 8.6 μg/m3 (36) 36.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 37.0 μg/m3 (34) 7.4 μg/m3 (31) 34.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 46.0 μg/m3 (42) 10.3 μg/m3 (43) 43.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 65.0 μg/m3 (55) 11.7 μg/m3 (49) 55.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 67.0 μg/m3 (56) 10.3 μg/m3 (43) 56.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 88.0 μg/m3 (66) 17.5 μg/m3 (62) 66.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 114.0 μg/m3 (80) 12.0 μg/m3 (50) 80.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 142.0 μg/m3 (94) 10.3 μg/m3 (43) 94.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 177.0 μg/m3 (111) 9.5 μg/m3 (40) 111.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 135.0 μg/m3 (90) 7.3 μg/m3 (30) 90.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 62.0 μg/m3 (54) 8.6 μg/m3 (36) 54.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 75.0 μg/m3 (60) 9.8 μg/m3 (41) 60.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 73.0 μg/m3 (59) 7.3 μg/m3 (30) 59.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 57.0 μg/m3 (51) 6.9 μg/m3 (29) 51.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 42.0 μg/m3 (38) 8.3 μg/m3 (35) 38.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 41.0 μg/m3 (37) 8.1 μg/m3 (34) 37.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 38.0 μg/m3 (35) 15.7 μg/m3 (58) 58.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 63.0 μg/m3 (54) 16.5 μg/m3 (60) 60.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 68.0 μg/m3 (56) 13.4 μg/m3 (53) 56.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 64.0 μg/m3 (54) 8.5 μg/m3 (35) 54.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 42.0 μg/m3 (38) 8.6 μg/m3 (36) 38.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 103.0 μg/m3 (74) 10.5 μg/m3 (44) 74.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 55.0 μg/m3 (50) 8.3 μg/m3 (35) 50.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 34.0 μg/m3 (31) 7.9 μg/m3 (33) 33.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 20.0 μg/m3 (18) 7.6 μg/m3 (32) 32.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 23.0 μg/m3 (21) 7.1 μg/m3 (30) 30.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 25.0 μg/m3 (23) 9.3 μg/m3 (39) 39.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 38.0 μg/m3 (35) 9.5 μg/m3 (40) 40.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 26.0 μg/m3 (24) 6.2 μg/m3 (26) 26.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 66.0 μg/m3 (56) 18.7 μg/m3 (64) 64.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 92.0 μg/m3 (68) 38.2 μg/m3 (107) 107.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 98.0 μg/m3 (72) 4.7 μg/m3 (20) 72.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 95.0 μg/m3 (70) 3.8 μg/m3 (16) 70.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 73.0 μg/m3 (59) 6.2 μg/m3 (26) 59.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 42.0 μg/m3 (38) 6.0 μg/m3 (25) 38.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 28.0 μg/m3 (25) 7.6 μg/m3 (32) 32.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 44.0 μg/m3 (40) 6.4 μg/m3 (27) 40.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 35.0 μg/m3 (32) 9.3 μg/m3 (39) 39.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 38.0 μg/m3 (35) 12.7 μg/m3 (51) 51.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 44.0 μg/m3 (40) 13.5 μg/m3 (53) 53.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 37.0 μg/m3 (34) 17.7 μg/m3 (62) 62.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 57.0 μg/m3 (51) 11.5 μg/m3 (48) 51.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 43.0 μg/m3 (39) 12.2 μg/m3 (50) 50.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 55.0 μg/m3 (50) 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 70.0 μg/m3 (58) 11.7 μg/m3 (49) 58.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 92.0 μg/m3 (68) 10.2 μg/m3 (42) 68.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 42.0 μg/m3 (38) 9.3 μg/m3 (39) 39.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 15.0 μg/m3 (14) 6.2 μg/m3 (26) 26.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 18.0 μg/m3 (16) 5.2 μg/m3 (22) 22.0
 
March 18, 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) 6.2 μg/m3 (26) 26.0
 
March 18, 2019, 9 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) 6.7 μg/m3 (28) 28.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 22.0 μg/m3 (20) 6.2 μg/m3 (26) 26.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 24.0 μg/m3 (22) 6.4 μg/m3 (27) 27.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 35.0 μg/m3 (32) 9.3 μg/m3 (39) 39.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 36.0 μg/m3 (33) 6.7 μg/m3 (28) 33.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 39.0 μg/m3 (35) -1.8 μg/m3 (0) 35.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 59.0 μg/m3 (52) -2.3 μg/m3 (0) 52.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 67.0 μg/m3 (56) 3.1 μg/m3 (13) 56.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 27.0 μg/m3 (25) 4.8 μg/m3 (20) 28.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 20.0 μg/m3 (18) 4.3 μg/m3 (18) 32.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 15.0 μg/m3 (14) 3.6 μg/m3 (15) 32.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 27.0 μg/m3 (25) 6.4 μg/m3 (27) 29.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 39.0 μg/m3 (35) 9.6 μg/m3 (40) 40.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 32.0 μg/m3 (29) 11.5 μg/m3 (48) 48.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 23.0 μg/m3 (21) 10.3 μg/m3 (43) 43.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 36.0 μg/m3 (33) 9.5 μg/m3 (40) 40.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 31.0 μg/m3 (28) 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 37.0 μg/m3 (34) 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 21.0 μg/m3 (19) 8.3 μg/m3 (35) 35.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 19.0 μg/m3 (17) 6.4 μg/m3 (27) 27.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 14.0 μg/m3 (13) 6.7 μg/m3 (28) 28.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 12.0 μg/m3 (11) 5.9 μg/m3 (25) 25.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 9.0 μg/m3 (8) 8.3 μg/m3 (35) 35.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 20.0 μg/m3 (18) 8.6 μg/m3 (36) 36.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 16.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 35.0 μg/m3 (32) 10.5 μg/m3 (44) 44.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 29.0 μg/m3 (26) 9.1 μg/m3 (38) 38.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 40.0 μg/m3 (36) 7.4 μg/m3 (31) 36.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 68.0 μg/m3 (56) 22.8 μg/m3 (73) 73.0
 
March 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 61.0 μg/m3 (53) 6.4 μg/m3 (27) 53.0
 
March 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 101.0 μg/m3 (73) 4.8 μg/m3 (20) 73.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 129.0 μg/m3 (87) 21.1 μg/m3 (69) 87.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 60.0 μg/m3 (52) 11.3 μg/m3 (47) 52.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 57.0 μg/m3 (51) 11.7 μg/m3 (49) 51.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 36.0 μg/m3 (33) 9.8 μg/m3 (41) 41.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 44.0 μg/m3 (40) 7.8 μg/m3 (32) 40.0