ID: 2164

AQSQID: 460290002

Site Name: Watertown

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

Updated: July 25, 2021, 4:53 a.m.

Location: Watertown (3rd Ave Swest), SD

Reporting: True, Located: True

Current AQI: 70.0

Watertown (3rd Ave Swest) SD, US: 44.89965, -97.128802

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 25, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 42.0 μg/m3 (39) 21.1 μg/m3 (70) 70.0
 
July 25, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 32.0 μg/m3 (30) 21.3 μg/m3 (71) 71.0
 
July 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 41.0 μg/m3 (38) 24.0 μg/m3 (77) 77.0
 
July 25, 2021, midnight N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A 41.0 μg/m3 (38) 20.2 μg/m3 (69) 78.0
 
July 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A 41.0 μg/m3 (38) 19.4 μg/m3 (67) 91.0
 
July 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A 42.0 μg/m3 (39) 20.4 μg/m3 (69) 87.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A 33.0 μg/m3 (31) 17.2 μg/m3 (62) 74.0
 
July 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 26.0 μg/m3 (25) 11.3 μg/m3 (48) 65.0
 
July 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 28.0 μg/m3 (26) 9.3 μg/m3 (39) 68.0
 
July 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A 22.0 μg/m3 (21) 13.0 μg/m3 (53) 78.0
 
July 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 20.0 μg/m3 (19) 10.8 μg/m3 (46) 65.0
 
July 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 10.0 μg/m3 (10) 7.4 μg/m3 (31) 58.0
 
July 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 21.0 μg/m3 (20) 7.4 μg/m3 (31) 47.0
 
July 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 20.0 μg/m3 (19) 6.6 μg/m3 (28) 44.0
 
July 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 16.0 μg/m3 (15) 7.8 μg/m3 (33) 33.0
 
July 24, 2021, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 11.0 μg/m3 (11) 6.9 μg/m3 (29) 29.0
 
July 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 13.0 μg/m3 (13) 4.2 μg/m3 (18) 30.0
 
July 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 11.0 μg/m3 (11) 5.6 μg/m3 (24) 31.0
 
July 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 11.0 μg/m3 (11) 5.7 μg/m3 (24) 35.0
 
July 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 10.0 μg/m3 (10) 5.4 μg/m3 (23) 40.0
 
July 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 8.0 μg/m3 (8) 6.2 μg/m3 (26) 45.0
 
July 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 67.0 μg/m3 (57) 10.5 μg/m3 (44) 57.0
 
July 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 15.0 μg/m3 (14) 8.1 μg/m3 (34) 48.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 10.0 μg/m3 (10) 6.9 μg/m3 (29) 48.0
 
July 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 37.0 μg/m3 (35) 7.9 μg/m3 (33) 61.0
 
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 39.0 μg/m3 (37) 14.0 μg/m3 (55) 55.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 52.0 μg/m3 (49) 16.2 μg/m3 (60) 60.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 52.0 μg/m3 (49) 18.4 μg/m3 (65) 68.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 54.0 μg/m3 (50) 19.6 μg/m3 (67) 67.0
 
July 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 62.0 μg/m3 (55) 15.9 μg/m3 (59) 65.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 79.0 μg/m3 (63) 14.2 μg/m3 (56) 63.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 74.0 μg/m3 (61) 19.4 μg/m3 (67) 67.0
 
July 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 126.0 μg/m3 (87) 17.1 μg/m3 (62) 87.0
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 90.0 μg/m3 (69) 21.3 μg/m3 (71) 71.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 109.0 μg/m3 (78) 19.1 μg/m3 (66) 78.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 84.0 μg/m3 (66) 22.5 μg/m3 (73) 73.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 79.0 μg/m3 (63) 22.8 μg/m3 (74) 74.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 98.0 μg/m3 (73) 23.3 μg/m3 (75) 75.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 96.0 μg/m3 (72) 20.6 μg/m3 (69) 72.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 45.0 μg/m3 (42) 20.8 μg/m3 (70) 70.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 44.0 μg/m3 (41) 19.6 μg/m3 (67) 67.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 37.0 μg/m3 (35) 17.9 μg/m3 (64) 64.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 31.0 μg/m3 (29) 17.9 μg/m3 (64) 64.0
 
July 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 34.0 μg/m3 (32) 18.9 μg/m3 (66) 66.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 42.0 μg/m3 (39) 21.1 μg/m3 (70) 70.0
 
July 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 37.0 μg/m3 (35) 17.6 μg/m3 (63) 63.0
 
July 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 53.0 μg/m3 (50) 17.4 μg/m3 (63) 63.0
 
July 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 65.0 μg/m3 (56) 20.8 μg/m3 (70) 70.0
 
July 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 68.0 μg/m3 (58) 22.8 μg/m3 (74) 74.0
 
July 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 86.0 μg/m3 (67) 24.0 μg/m3 (77) 77.0
 
July 23, 2021, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 44.0 μg/m3 (41) 24.0 μg/m3 (77) 77.0
 
July 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 58.0 μg/m3 (53) 18.4 μg/m3 (65) 65.0
 
July 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 82.0 μg/m3 (65) 21.6 μg/m3 (71) 71.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 65.0 μg/m3 (56) 16.7 μg/m3 (61) 61.0
 
July 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 61.0 μg/m3 (54) 19.4 μg/m3 (67) 67.0
 
July 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 61.0 μg/m3 (54) 18.9 μg/m3 (66) 66.0
 
July 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 55.0 μg/m3 (51) 22.5 μg/m3 (73) 73.0
 
July 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 58.0 μg/m3 (53) 19.4 μg/m3 (67) 67.0
 
July 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 58.0 μg/m3 (53) 20.1 μg/m3 (68) 68.0
 
July 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 57.0 μg/m3 (52) 21.1 μg/m3 (70) 70.0
 
July 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 72.0 μg/m3 (60) 26.7 μg/m3 (82) 82.0
 
July 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 68.0 μg/m3 (58) 28.6 μg/m3 (86) 86.0
 
July 22, 2021, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 58.0 μg/m3 (53) 26.9 μg/m3 (83) 83.0
 
July 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 41.0 μg/m3 (38) 18.9 μg/m3 (66) 66.0
 
July 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 31.0 μg/m3 (29) 21.3 μg/m3 (71) 71.0
 
July 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 28.0 μg/m3 (26) 17.9 μg/m3 (64) 64.0
 
July 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 39.0 μg/m3 (37) 20.4 μg/m3 (69) 69.0
 
July 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 34.0 μg/m3 (32) 16.4 μg/m3 (61) 61.0
 
July 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 40.0 μg/m3 (38) 17.6 μg/m3 (63) 63.0
 
July 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 36.0 μg/m3 (34) 18.9 μg/m3 (66) 66.0
 
July 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 62.0 μg/m3 (55) 23.2 μg/m3 (75) 75.0
 
July 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 51.0 μg/m3 (48) 18.2 μg/m3 (64) 64.0
 
July 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 42.0 μg/m3 (39) 22.1 μg/m3 (73) 73.0
 
July 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 47.0 μg/m3 (44) 11.2 μg/m3 (47) 49.0
 
July 22, 2021, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 46.0 μg/m3 (43) 12.9 μg/m3 (53) 53.0
 
July 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 66.0 μg/m3 (57) 15.6 μg/m3 (59) 59.0
 
July 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 126.0 μg/m3 (87) 15.4 μg/m3 (58) 87.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 137.0 μg/m3 (92) 20.1 μg/m3 (68) 92.0
 
July 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 79.0 μg/m3 (63) 11.2 μg/m3 (47) 63.0
 
July 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 126.0 μg/m3 (87) 18.4 μg/m3 (65) 87.0
 
July 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 148.0 μg/m3 (98) 18.1 μg/m3 (64) 98.0
 
July 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 125.0 μg/m3 (86) 17.1 μg/m3 (62) 86.0
 
July 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 115.0 μg/m3 (81) 14.4 μg/m3 (56) 81.0
 
July 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 92.0 μg/m3 (70) 10.0 μg/m3 (42) 70.0
 
July 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 118.0 μg/m3 (83) 14.7 μg/m3 (57) 83.0
 
July 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 95.0 μg/m3 (71) 13.7 μg/m3 (55) 71.0
 
July 21, 2021, noon N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 74.0 μg/m3 (61) 19.4 μg/m3 (67) 67.0
 
July 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 30.0 μg/m3 (28) 12.0 μg/m3 (50) 50.0
 
July 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 33.0 μg/m3 (31) 13.7 μg/m3 (55) 55.0
 
July 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 32.0 μg/m3 (30) 14.2 μg/m3 (56) 56.0
 
July 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 33.0 μg/m3 (31) 12.2 μg/m3 (52) 52.0
 
July 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 32.0 μg/m3 (30) 9.8 μg/m3 (41) 41.0
 
July 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 44.0 μg/m3 (41) 16.2 μg/m3 (60) 60.0
 
July 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 41.0 μg/m3 (38) 15.2 μg/m3 (58) 58.0
 
July 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 59.0 μg/m3 (53) 16.2 μg/m3 (60) 60.0
 
July 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 70.0 μg/m3 (59) 13.7 μg/m3 (55) 59.0
 
July 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 79.0 μg/m3 (63) 14.4 μg/m3 (56) 63.0
 
July 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 46.0 μg/m3 (43) 17.4 μg/m3 (63) 63.0
 
July 21, 2021, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 43.0 μg/m3 (40) 14.2 μg/m3 (56) 56.0
 
July 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 51.0 μg/m3 (48) 16.4 μg/m3 (61) 61.0
 
July 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 90.0 μg/m3 (69) 16.9 μg/m3 (62) 69.0
 
July 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 70.0 μg/m3 (59) 12.0 μg/m3 (50) 59.0
 
July 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 63.0 μg/m3 (55) 10.0 μg/m3 (42) 58.0
 
July 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 63.0 μg/m3 (55) 9.6 μg/m3 (40) 55.0
 
July 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 47.0 μg/m3 (44) 12.5 μg/m3 (52) 55.0
 
July 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 37.0 μg/m3 (35) 11.3 μg/m3 (48) 51.0
 
July 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 37.0 μg/m3 (35) 10.0 μg/m3 (42) 49.0
 
July 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 44.0 μg/m3 (41) 11.5 μg/m3 (48) 48.0
 
July 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 52.0 μg/m3 (49) 16.4 μg/m3 (61) 61.0
 
July 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 105.0 μg/m3 (76) 21.3 μg/m3 (71) 76.0
 
July 20, 2021, noon N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 163.0 μg/m3 (105) 24.7 μg/m3 (78) 105.0
 
July 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 72.0 μg/m3 (60) 20.4 μg/m3 (69) 69.0
 
July 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 29.0 μg/m3 (27) 17.4 μg/m3 (63) 63.0
 
July 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 28.0 μg/m3 (26) 14.7 μg/m3 (57) 57.0
 
July 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 35.0 μg/m3 (33) 13.2 μg/m3 (54) 54.0
 
July 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 30.0 μg/m3 (28) 9.8 μg/m3 (41) 41.0
 
July 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 67.0 μg/m3 (57) 12.2 μg/m3 (52) 57.0
 
July 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 33.0 μg/m3 (31) 15.2 μg/m3 (58) 58.0
 
July 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 38.0 μg/m3 (36) 12.5 μg/m3 (52) 52.0
 
July 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 38.0 μg/m3 (36) 17.6 μg/m3 (63) 63.0
 
July 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 35.0 μg/m3 (33) 14.0 μg/m3 (55) 55.0
 
July 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 45.0 μg/m3 (42) 12.5 μg/m3 (52) 52.0
 
July 20, 2021, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 77.0 μg/m3 (62) 15.2 μg/m3 (58) 62.0
 
July 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 38.0 μg/m3 (36) 12.2 μg/m3 (52) 52.0
 
July 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 31.0 μg/m3 (29) 12.0 μg/m3 (50) 51.0
 
July 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 32.0 μg/m3 (30) 11.5 μg/m3 (48) 50.0
 
July 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 39.0 μg/m3 (37) 16.9 μg/m3 (62) 62.0
 
July 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 44.0 μg/m3 (41) 14.7 μg/m3 (57) 57.0
 
July 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 30.0 μg/m3 (28) 13.5 μg/m3 (54) 54.0
 
July 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 48.0 μg/m3 (45) 15.2 μg/m3 (58) 58.0
 
July 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 40.0 μg/m3 (38) 12.9 μg/m3 (53) 53.0
 
July 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 40.0 μg/m3 (38) 14.7 μg/m3 (57) 57.0
 
July 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 58.0 μg/m3 (53) 10.8 μg/m3 (46) 53.0
 
July 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 58.0 μg/m3 (53) 15.6 μg/m3 (59) 59.0
 
July 19, 2021, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 140.0 μg/m3 (94) 22.8 μg/m3 (74) 94.0
 
July 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 34.0 μg/m3 (32) 13.2 μg/m3 (54) 54.0
 
July 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 30.0 μg/m3 (28) 11.7 μg/m3 (49) 49.0
 
July 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 43.0 μg/m3 (40) 19.9 μg/m3 (68) 68.0
 
July 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 37.0 μg/m3 (35) 12.2 μg/m3 (52) 52.0
 
July 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 30.0 μg/m3 (28) 13.5 μg/m3 (54) 54.0
 
July 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 31.0 μg/m3 (29) 14.7 μg/m3 (57) 57.0
 
July 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 41.0 μg/m3 (38) 14.5 μg/m3 (57) 57.0
 
July 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 36.0 μg/m3 (34) 16.4 μg/m3 (61) 61.0
 
July 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 40.0 μg/m3 (38) 17.7 μg/m3 (63) 63.0
 
July 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 64.0 μg/m3 (56) 14.2 μg/m3 (56) 56.0
 
July 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 156.0 μg/m3 (102) 17.4 μg/m3 (63) 102.0
 
July 19, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 52.0 μg/m3 (49) 18.7 μg/m3 (65) 65.0
 
July 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 45.0 μg/m3 (42) 15.4 μg/m3 (58) 58.0
 
July 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 57.0 μg/m3 (52) 16.2 μg/m3 (60) 60.0
 
July 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 34.0 μg/m3 (32) 12.7 μg/m3 (53) 55.0
 
July 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 37.0 μg/m3 (35) 14.0 μg/m3 (55) 55.0
 
July 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 46.0 μg/m3 (43) 16.2 μg/m3 (60) 60.0
 
July 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 50.0 μg/m3 (47) 15.4 μg/m3 (58) 58.0
 
July 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 37.0 μg/m3 (35) 13.2 μg/m3 (54) 54.0
 
July 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 35.0 μg/m3 (33) 13.2 μg/m3 (54) 54.0
 
July 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 41.0 μg/m3 (38) 15.7 μg/m3 (59) 59.0
 
July 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 40.0 μg/m3 (38) 14.0 μg/m3 (55) 55.0
 
July 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 36.0 μg/m3 (34) 20.6 μg/m3 (69) 69.0
 
July 18, 2021, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 29.0 μg/m3 (27) 17.9 μg/m3 (64) 64.0
 
July 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 27.0 μg/m3 (25) 19.6 μg/m3 (67) 67.0
 
July 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 23.0 μg/m3 (22) 16.9 μg/m3 (62) 62.0
 
July 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 23.0 μg/m3 (22) 18.1 μg/m3 (64) 64.0
 
July 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 32.0 μg/m3 (30) 16.9 μg/m3 (62) 62.0
 
July 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 28.0 μg/m3 (26) 15.6 μg/m3 (59) 59.0
 
July 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 29.0 μg/m3 (27) 14.7 μg/m3 (57) 57.0
 
July 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 33.0 μg/m3 (31) 19.1 μg/m3 (66) 66.0
 
July 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 37.0 μg/m3 (35) 22.1 μg/m3 (73) 73.0
 
July 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 75.0 μg/m3 (61) 37.5 μg/m3 (106) 106.0