ID: 1594

AQSQID: 051430005

Site Name: Sprngdle

Added: April 21, 2020, 6:24 p.m.

Updated: Sept. 19, 2021, 9:56 a.m.

Location: Springdale (S Old Missouri Rd), AR

Reporting: True, Located: True

Current AQI: 27.0

Springdale (S Old Missouri Rd) AR, US: 36.1797, -94.1167

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 12, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 16.7 μg/m3 (61) 61.0
 
Sept. 12, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.4 μg/m3 (61) 61.0
 
Sept. 12, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 15.9 μg/m3 (59) 59.0
 
Sept. 12, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 17.7 μg/m3 (63) 63.0
 
Sept. 12, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 17.5 μg/m3 (63) 63.0
 
Sept. 12, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 18.7 μg/m3 (65) 65.0
 
Sept. 12, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 17.8 μg/m3 (63) 63.0
 
Sept. 12, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 18.6 μg/m3 (65) 65.0
 
Sept. 12, 2021, midnight N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 19.4 μg/m3 (67) 67.0
 
Sept. 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 19.2 μg/m3 (66) 71.0
 
Sept. 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 16.2 μg/m3 (60) 84.0
 
Sept. 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A N/A 15.6 μg/m3 (59) 87.0
 
Sept. 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 15.8 μg/m3 (59) 84.0
 
Sept. 11, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 11.8 μg/m3 (50) 74.0
 
Sept. 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 11.9 μg/m3 (50) 71.0
 
Sept. 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 13.0 μg/m3 (53) 68.0
 
Sept. 11, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 14.5 μg/m3 (57) 68.0
 
Sept. 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 13.7 μg/m3 (55) 71.0
 
Sept. 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 13.5 μg/m3 (54) 65.0
 
Sept. 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 14.5 μg/m3 (57) 57.0
 
Sept. 11, 2021, noon N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 12.3 μg/m3 (52) 52.0
 
Sept. 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 11.7 μg/m3 (49) 49.0
 
Sept. 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 11.7 μg/m3 (49) 49.0
 
Sept. 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 10.2 μg/m3 (43) 47.0
 
Sept. 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 9.6 μg/m3 (40) 43.0
 
Sept. 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 12.4 μg/m3 (52) 52.0
 
Sept. 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 14.5 μg/m3 (57) 57.0
 
Sept. 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 13.3 μg/m3 (54) 54.0
 
Sept. 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 14.6 μg/m3 (57) 57.0
 
Sept. 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 16.6 μg/m3 (61) 61.0
 
Sept. 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 16.3 μg/m3 (60) 60.0
 
Sept. 11, 2021, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 14.4 μg/m3 (56) 56.0
 
Sept. 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A N/A 13.0 μg/m3 (53) 61.0
 
Sept. 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 12.3 μg/m3 (52) 65.0
 
Sept. 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 9.9 μg/m3 (42) 65.0
 
Sept. 10, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 11.1 μg/m3 (47) 55.0
 
Sept. 10, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 8.5 μg/m3 (36) 55.0
 
Sept. 10, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 10.0 μg/m3 (42) 50.0
 
Sept. 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 8.1 μg/m3 (34) 50.0
 
Sept. 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 10.4 μg/m3 (44) 50.0
 
Sept. 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 10.9 μg/m3 (46) 46.0
 
Sept. 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 9.3 μg/m3 (39) 39.0
 
Sept. 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 11.6 μg/m3 (49) 49.0
 
Sept. 10, 2021, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 11.8 μg/m3 (50) 50.0
 
Sept. 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 7.9 μg/m3 (33) 33.0
 
Sept. 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 7.1 μg/m3 (30) 30.0
 
Sept. 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 7.9 μg/m3 (33) 33.0
 
Sept. 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 7.3 μg/m3 (31) 31.0
 
Sept. 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 7.3 μg/m3 (31) 33.0
 
Sept. 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 9.3 μg/m3 (39) 39.0
 
Sept. 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 11.3 μg/m3 (48) 48.0
 
Sept. 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 12.7 μg/m3 (53) 53.0
 
Sept. 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 17.5 μg/m3 (63) 63.0
 
Sept. 10, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 10.3 μg/m3 (43) 43.0
 
Sept. 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 8.8 μg/m3 (37) 55.0
 
Sept. 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 7.5 μg/m3 (32) 58.0
 
Sept. 9, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 8.1 μg/m3 (34) 71.0
 
Sept. 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 6.9 μg/m3 (29) 65.0
 
Sept. 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 7.3 μg/m3 (31) 58.0
 
Sept. 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 6.2 μg/m3 (26) 58.0
 
Sept. 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 5.6 μg/m3 (24) 58.0
 
Sept. 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 0.1 μg/m3 (1) 50.0
 
Sept. 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A -0.6 μg/m3 (0) 39.0
 
Sept. 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 4.2 μg/m3 (18) 28.0
 
Sept. 9, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 9, 2021, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 8.4 μg/m3 (36) 36.0
 
Sept. 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 8.6 μg/m3 (36) 36.0
 
Sept. 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 9.9 μg/m3 (42) 42.0
 
Sept. 9, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 11.8 μg/m3 (50) 50.0
 
Sept. 9, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 9, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 9, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 13.5 μg/m3 (54) 54.0
 
Sept. 9, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 10.7 μg/m3 (45) 45.0
 
Sept. 9, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 9.6 μg/m3 (40) 40.0
 
Sept. 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 8.9 μg/m3 (38) 38.0
 
Sept. 9, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 10.5 μg/m3 (44) 44.0
 
Sept. 9, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 13.8 μg/m3 (55) 55.0
 
Sept. 9, 2021, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 7.8 μg/m3 (33) 44.0
 
Sept. 8, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 7.7 μg/m3 (33) 48.0
 
Sept. 8, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 6.7 μg/m3 (28) 48.0
 
Sept. 8, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 5.8 μg/m3 (25) 48.0
 
Sept. 8, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 4.2 μg/m3 (18) 49.0
 
Sept. 8, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 4.5 μg/m3 (19) 50.0
 
Sept. 8, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 2.7 μg/m3 (12) 50.0
 
Sept. 8, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 3.6 μg/m3 (16) 50.0
 
Sept. 8, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 4.0 μg/m3 (17) 49.0
 
Sept. 8, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.4 μg/m3 (19) 47.0
 
Sept. 8, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 6.8 μg/m3 (29) 41.0
 
Sept. 8, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 8, 2021, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 10.2 μg/m3 (43) 43.0
 
Sept. 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 11.6 μg/m3 (49) 49.0
 
Sept. 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 19.7 μg/m3 (67) 67.0
 
Sept. 8, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 19.2 μg/m3 (66) 66.0
 
Sept. 8, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 14.4 μg/m3 (56) 56.0
 
Sept. 8, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 17.2 μg/m3 (62) 62.0
 
Sept. 8, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 18.1 μg/m3 (64) 64.0
 
Sept. 8, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 16.9 μg/m3 (62) 62.0
 
Sept. 8, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 18.7 μg/m3 (65) 65.0
 
Sept. 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 15.6 μg/m3 (59) 59.0
 
Sept. 8, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 19.5 μg/m3 (67) 67.0
 
Sept. 8, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 19.9 μg/m3 (68) 68.0
 
Sept. 8, 2021, midnight N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 16.0 μg/m3 (60) 60.0
 
Sept. 7, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 13.1 μg/m3 (54) 81.0
 
Sept. 7, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A N/A 11.6 μg/m3 (49) 87.0
 
Sept. 7, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 9.9 μg/m3 (42) 81.0
 
Sept. 7, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 11.0 μg/m3 (46) 71.0
 
Sept. 7, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A N/A 8.9 μg/m3 (38) 61.0
 
Sept. 7, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 10.3 μg/m3 (43) 50.0
 
Sept. 7, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 11.1 μg/m3 (47) 48.0
 
Sept. 7, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 12.9 μg/m3 (53) 53.0
 
Sept. 7, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 15.1 μg/m3 (58) 58.0
 
Sept. 7, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 14.4 μg/m3 (56) 56.0
 
Sept. 7, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 14.3 μg/m3 (56) 56.0
 
Sept. 7, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 13.0 μg/m3 (53) 53.0
 
Sept. 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 7, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 7, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 10.8 μg/m3 (46) 46.0
 
Sept. 7, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 10.3 μg/m3 (43) 43.0
 
Sept. 7, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 11.1 μg/m3 (47) 47.0
 
Sept. 7, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 7, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 11.4 μg/m3 (48) 48.0
 
Sept. 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 14.8 μg/m3 (57) 57.0
 
Sept. 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 14.2 μg/m3 (56) 56.0
 
Sept. 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 16.3 μg/m3 (60) 60.0
 
Sept. 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 19.1 μg/m3 (66) 66.0
 
Sept. 7, 2021, midnight N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 16.6 μg/m3 (61) 61.0
 
Sept. 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 13.4 μg/m3 (54) 84.0
 
Sept. 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 13.4 μg/m3 (54) 94.0
 
Sept. 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (101) N/A N/A 13.3 μg/m3 (54) 101.0
 
Sept. 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (101) N/A N/A 12.2 μg/m3 (52) 101.0
 
Sept. 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 11.0 μg/m3 (46) 97.0
 
Sept. 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 9.5 μg/m3 (40) 84.0
 
Sept. 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 9.0 μg/m3 (38) 71.0
 
Sept. 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 7.3 μg/m3 (31) 46.0
 
Sept. 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 9.7 μg/m3 (41) 41.0
 
Sept. 6, 2021, noon N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 6, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 11.8 μg/m3 (50) 50.0
 
Sept. 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 10.2 μg/m3 (43) 43.0
 
Sept. 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 12.8 μg/m3 (53) 53.0
 
Sept. 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 16.1 μg/m3 (60) 60.0
 
Sept. 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 12.8 μg/m3 (53) 53.0
 
Sept. 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 14.3 μg/m3 (56) 56.0
 
Sept. 6, 2021, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 10.9 μg/m3 (46) 46.0
 
Sept. 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 9.7 μg/m3 (41) 43.0
 
Sept. 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 8.7 μg/m3 (37) 45.0
 
Sept. 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 6.7 μg/m3 (28) 45.0
 
Sept. 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 9.8 μg/m3 (41) 43.0
 
Sept. 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 7.7 μg/m3 (33) 42.0
 
Sept. 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.3 μg/m3 (18) 38.0
 
Sept. 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.2 μg/m3 (22) 33.0
 
Sept. 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 6.9 μg/m3 (29) 29.0
 
Sept. 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 8.8 μg/m3 (37) 37.0
 
Sept. 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 9.6 μg/m3 (40) 40.0
 
Sept. 5, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 9.5 μg/m3 (40) 40.0
 
Sept. 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 8.2 μg/m3 (35) 35.0
 
Sept. 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 4.1 μg/m3 (18) 22.0