ID: 2167

AQSQID: 461270001

Site Name: Uc1

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

Updated: Sept. 24, 2020, 4:39 a.m.

Location: Elk Point (475th Ave), SD

Reporting: True, Located: True

Current AQI: 43.0

Elk Point (475th Ave) SD, US: 42.751518, -96.707208

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 24, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 33.0 μg/m3 (30) 10.4 μg/m3 (43) 43.0
 
Sept. 24, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 51.0 μg/m3 (46) 14.3 μg/m3 (55) 55.0
 
Sept. 24, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 71.0 μg/m3 (58) 16.1 μg/m3 (59) 59.0
 
Sept. 24, 2020, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 88.0 μg/m3 (66) 10.3 μg/m3 (43) 66.0
 
Sept. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 68.0 μg/m3 (56) 15.0 μg/m3 (56) 56.0
 
Sept. 23, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 75.0 μg/m3 (60) 18.4 μg/m3 (64) 64.0
 
Sept. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 43.0 μg/m3 (39) 14.0 μg/m3 (54) 54.0
 
Sept. 23, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 55.0 μg/m3 (50) 7.8 μg/m3 (32) 50.0
 
Sept. 23, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 58.0 μg/m3 (52) 8.8 μg/m3 (37) 52.0
 
Sept. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 41.0 μg/m3 (37) 7.3 μg/m3 (30) 37.0
 
Sept. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 33.0 μg/m3 (30) 7.6 μg/m3 (32) 33.0
 
Sept. 23, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 35.0 μg/m3 (32) 6.2 μg/m3 (26) 32.0
 
Sept. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 32.0 μg/m3 (29) 2.6 μg/m3 (11) 29.0
 
Sept. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 18.0 μg/m3 (16) 2.6 μg/m3 (11) 16.0
 
Sept. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 15.0 μg/m3 (14) 5.0 μg/m3 (21) 21.0
 
Sept. 23, 2020, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 24.0 μg/m3 (22) 7.4 μg/m3 (31) 31.0
 
Sept. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 16.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
Sept. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 19.0 μg/m3 (17) 8.8 μg/m3 (37) 37.0
 
Sept. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 25.0 μg/m3 (23) 10.6 μg/m3 (44) 44.0
 
Sept. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 29.0 μg/m3 (26) 14.2 μg/m3 (55) 55.0
 
Sept. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 32.0 μg/m3 (29) 16.3 μg/m3 (59) 59.0
 
Sept. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 42.0 μg/m3 (38) 17.7 μg/m3 (62) 62.0
 
Sept. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 45.0 μg/m3 (41) 14.2 μg/m3 (55) 55.0
 
Sept. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 47.0 μg/m3 (43) 11.6 μg/m3 (48) 48.0
 
Sept. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 48.0 μg/m3 (44) 18.0 μg/m3 (63) 63.0
 
Sept. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 62.0 μg/m3 (54) 18.2 μg/m3 (63) 63.0
 
Sept. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 75.0 μg/m3 (60) 16.5 μg/m3 (60) 60.0
 
Sept. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 82.0 μg/m3 (64) 14.5 μg/m3 (55) 64.0
 
Sept. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 58.0 μg/m3 (52) 13.0 μg/m3 (52) 52.0
 
Sept. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 50.0 μg/m3 (45) 13.3 μg/m3 (53) 53.0
 
Sept. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 55.0 μg/m3 (50) 15.5 μg/m3 (57) 57.0
 
Sept. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 55.0 μg/m3 (50) 10.6 μg/m3 (44) 50.0
 
Sept. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 49.0 μg/m3 (45) 15.5 μg/m3 (57) 57.0
 
Sept. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 42.0 μg/m3 (38) 11.6 μg/m3 (48) 48.0
 
Sept. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 44.0 μg/m3 (40) 14.0 μg/m3 (54) 54.0
 
Sept. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 54.0 μg/m3 (49) 12.5 μg/m3 (51) 51.0
 
Sept. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 38.0 μg/m3 (35) 12.8 μg/m3 (52) 52.0
 
Sept. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 32.0 μg/m3 (29) 11.1 μg/m3 (46) 46.0
 
Sept. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 32.0 μg/m3 (29) 12.8 μg/m3 (52) 52.0
 
Sept. 22, 2020, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 28.0 μg/m3 (25) 12.1 μg/m3 (50) 50.0
 
Sept. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 22.0 μg/m3 (20) 12.8 μg/m3 (52) 52.0
 
Sept. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 24.0 μg/m3 (22) 12.3 μg/m3 (51) 51.0
 
Sept. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 25.0 μg/m3 (23) 12.3 μg/m3 (51) 51.0
 
Sept. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 20.0 μg/m3 (18) 11.8 μg/m3 (49) 49.0
 
Sept. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 29.0 μg/m3 (26) 9.8 μg/m3 (41) 41.0
 
Sept. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 29.0 μg/m3 (26) 12.5 μg/m3 (51) 51.0
 
Sept. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 28.0 μg/m3 (25) 17.0 μg/m3 (61) 61.0
 
Sept. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 28.0 μg/m3 (25) 9.8 μg/m3 (41) 41.0
 
Sept. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 62.0 μg/m3 (54) 18.4 μg/m3 (64) 64.0
 
Sept. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 68.0 μg/m3 (56) 15.0 μg/m3 (56) 56.0
 
Sept. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 97.0 μg/m3 (71) 18.9 μg/m3 (65) 71.0
 
Sept. 22, 2020, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 68.0 μg/m3 (56) 15.0 μg/m3 (56) 56.0
 
Sept. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 54.0 μg/m3 (49) 18.9 μg/m3 (65) 65.0
 
Sept. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 48.0 μg/m3 (44) 18.9 μg/m3 (65) 65.0
 
Sept. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 61.0 μg/m3 (53) 12.8 μg/m3 (52) 53.0
 
Sept. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 41.0 μg/m3 (37) 13.2 μg/m3 (53) 53.0
 
Sept. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 45.0 μg/m3 (41) 13.7 μg/m3 (54) 54.0
 
Sept. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 56.0 μg/m3 (50) 17.8 μg/m3 (62) 62.0
 
Sept. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 54.0 μg/m3 (49) 17.5 μg/m3 (62) 62.0
 
Sept. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 56.0 μg/m3 (50) 16.0 μg/m3 (59) 59.0
 
Sept. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 41.0 μg/m3 (37) 10.8 μg/m3 (45) 45.0
 
Sept. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 36.0 μg/m3 (33) 11.3 μg/m3 (47) 47.0
 
Sept. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 21.0 μg/m3 (19) 10.6 μg/m3 (44) 44.0
 
Sept. 21, 2020, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 27.0 μg/m3 (25) 8.8 μg/m3 (37) 37.0
 
Sept. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 18.0 μg/m3 (16) 11.1 μg/m3 (46) 46.0
 
Sept. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 18.0 μg/m3 (16) 11.5 μg/m3 (48) 48.0
 
Sept. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 28.0 μg/m3 (25) 12.8 μg/m3 (52) 52.0
 
Sept. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 26.0 μg/m3 (24) 14.5 μg/m3 (55) 55.0
 
Sept. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 27.0 μg/m3 (25) 17.3 μg/m3 (61) 61.0
 
Sept. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 30.0 μg/m3 (27) 12.5 μg/m3 (51) 51.0
 
Sept. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 31.0 μg/m3 (28) 15.5 μg/m3 (57) 57.0
 
Sept. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 37.0 μg/m3 (34) 18.4 μg/m3 (64) 64.0
 
Sept. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 37.0 μg/m3 (34) 15.2 μg/m3 (57) 57.0
 
Sept. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 49.0 μg/m3 (45) 25.3 μg/m3 (78) 78.0
 
Sept. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 57.0 μg/m3 (51) 25.0 μg/m3 (78) 78.0
 
Sept. 21, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 62.0 μg/m3 (54) 27.2 μg/m3 (82) 82.0
 
Sept. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 80.0 μg/m3 (62) 25.5 μg/m3 (79) 79.0
 
Sept. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 73.0 μg/m3 (59) 26.5 μg/m3 (81) 81.0
 
Sept. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 90.0 μg/m3 (68) 30.1 μg/m3 (89) 89.0
 
Sept. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 69.0 μg/m3 (57) 22.6 μg/m3 (73) 73.0
 
Sept. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 56.0 μg/m3 (50) 19.4 μg/m3 (66) 66.0
 
Sept. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 64.0 μg/m3 (54) 19.7 μg/m3 (66) 66.0
 
Sept. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 84.0 μg/m3 (64) 18.2 μg/m3 (63) 64.0
 
Sept. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 61.0 μg/m3 (53) 20.9 μg/m3 (69) 69.0
 
Sept. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 45.0 μg/m3 (41) 14.0 μg/m3 (54) 54.0
 
Sept. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 29.0 μg/m3 (26) 11.3 μg/m3 (47) 47.0
 
Sept. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 18.0 μg/m3 (16) 11.6 μg/m3 (48) 48.0
 
Sept. 20, 2020, noon N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 22.0 μg/m3 (20) 12.5 μg/m3 (51) 51.0
 
Sept. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 20.0 μg/m3 (18) 10.6 μg/m3 (44) 44.0
 
Sept. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 16.0 μg/m3 (15) 7.3 μg/m3 (30) 30.0
 
Sept. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 21.0 μg/m3 (19) 10.6 μg/m3 (44) 44.0
 
Sept. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 17.0 μg/m3 (15) 6.7 μg/m3 (28) 28.0
 
Sept. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 23.0 μg/m3 (21) 8.6 μg/m3 (36) 36.0
 
Sept. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 31.0 μg/m3 (28) 8.6 μg/m3 (36) 36.0
 
Sept. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 29.0 μg/m3 (26) 8.6 μg/m3 (36) 36.0
 
Sept. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 32.0 μg/m3 (29) 9.9 μg/m3 (41) 41.0
 
Sept. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 35.0 μg/m3 (32) 12.1 μg/m3 (50) 50.0
 
Sept. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 41.0 μg/m3 (37) 11.8 μg/m3 (49) 49.0
 
Sept. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 51.0 μg/m3 (46) 9.6 μg/m3 (40) 46.0
 
Sept. 20, 2020, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 54.0 μg/m3 (49) 15.7 μg/m3 (58) 58.0
 
Sept. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 54.0 μg/m3 (49) 11.3 μg/m3 (47) 49.0
 
Sept. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 63.0 μg/m3 (54) 12.3 μg/m3 (51) 54.0
 
Sept. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 59.0 μg/m3 (52) 14.2 μg/m3 (55) 55.0
 
Sept. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 77.0 μg/m3 (61) 12.3 μg/m3 (51) 61.0
 
Sept. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 77.0 μg/m3 (61) 12.6 μg/m3 (51) 61.0
 
Sept. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 66.0 μg/m3 (56) 9.6 μg/m3 (40) 56.0
 
Sept. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 66.0 μg/m3 (56) 7.8 μg/m3 (32) 56.0
 
Sept. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 55.0 μg/m3 (50) 5.2 μg/m3 (22) 50.0
 
Sept. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 35.0 μg/m3 (32) 3.3 μg/m3 (14) 32.0
 
Sept. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 27.0 μg/m3 (25) 6.2 μg/m3 (26) 26.0
 
Sept. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 20.0 μg/m3 (18) 7.8 μg/m3 (32) 32.0
 
Sept. 19, 2020, noon N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 21.0 μg/m3 (19) 3.8 μg/m3 (16) 19.0
 
Sept. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 19.0
 
Sept. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 17.0 μg/m3 (15) 6.7 μg/m3 (28) 28.0
 
Sept. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 28.0 μg/m3 (25) 7.6 μg/m3 (32) 32.0
 
Sept. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 31.0 μg/m3 (28) 7.6 μg/m3 (32) 32.0
 
Sept. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 36.0 μg/m3 (33) 8.8 μg/m3 (37) 37.0
 
Sept. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 27.0 μg/m3 (25) 8.6 μg/m3 (36) 36.0
 
Sept. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 41.0 μg/m3 (37) 8.4 μg/m3 (35) 37.0
 
Sept. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 59.0 μg/m3 (52) 13.3 μg/m3 (53) 53.0
 
Sept. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 35.0 μg/m3 (32) 11.6 μg/m3 (48) 48.0
 
Sept. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 28.0 μg/m3 (25) 9.4 μg/m3 (39) 39.0
 
Sept. 19, 2020, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 65.0 μg/m3 (55) 6.0 μg/m3 (25) 55.0
 
Sept. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 40.0 μg/m3 (36) 5.5 μg/m3 (23) 36.0
 
Sept. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 27.0 μg/m3 (25) 5.7 μg/m3 (24) 32.0
 
Sept. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 40.0 μg/m3 (36) 4.0 μg/m3 (17) 36.0
 
Sept. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 43.0 μg/m3 (39) 4.5 μg/m3 (19) 39.0
 
Sept. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 22.0 μg/m3 (20) 1.6 μg/m3 (7) 28.0
 
Sept. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 28.0 μg/m3 (25) 2.8 μg/m3 (12) 27.0
 
Sept. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 18.0 μg/m3 (16) 4.5 μg/m3 (19) 25.0
 
Sept. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 19.0 μg/m3 (17) 3.5 μg/m3 (15) 23.0
 
Sept. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 14.0 μg/m3 (13) 3.1 μg/m3 (13) 22.0
 
Sept. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 20.0
 
Sept. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 12.0 μg/m3 (11) 1.6 μg/m3 (7) 18.0
 
Sept. 18, 2020, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 13.0 μg/m3 (12) 3.6 μg/m3 (15) 17.0
 
Sept. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 11.0 μg/m3 (10) 5.7 μg/m3 (24) 24.0
 
Sept. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 15.0 μg/m3 (14) 3.6 μg/m3 (15) 16.0
 
Sept. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 14.0 μg/m3 (13) 4.3 μg/m3 (18) 18.0
 
Sept. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 13.0 μg/m3 (12) 2.3 μg/m3 (10) 16.0
 
Sept. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 12.0 μg/m3 (11) 2.3 μg/m3 (10) 18.0
 
Sept. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 10.0 μg/m3 (9) 2.3 μg/m3 (10) 20.0
 
Sept. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 18.0 μg/m3 (16) 4.5 μg/m3 (19) 22.0
 
Sept. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 17.0 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
Sept. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 32.0 μg/m3 (29) 2.8 μg/m3 (12) 29.0
 
Sept. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 23.0 μg/m3 (21) 5.2 μg/m3 (22) 22.0
 
Sept. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 74.0 μg/m3 (60) 7.9 μg/m3 (33) 60.0
 
Sept. 18, 2020, midnight N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 28.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 22.0 μg/m3 (20) 8.1 μg/m3 (34) 34.0
 
Sept. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 38.0 μg/m3 (35) 6.2 μg/m3 (26) 35.0
 
Sept. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 23.0 μg/m3 (21) 4.8 μg/m3 (20) 25.0
 
Sept. 17, 2020, 8 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) 3.8 μg/m3 (16) 25.0
 
Sept. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 24.0 μg/m3 (22) 4.0 μg/m3 (17) 24.0
 
Sept. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 21.0 μg/m3 (19) N/A 22.0
 
Sept. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 12.0 μg/m3 (11) 4.0 μg/m3 (17) 18.0
 
Sept. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 12.0 μg/m3 (11) 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2020, 2 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) 3.1 μg/m3 (13) 13.0
 
Sept. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 25.0 μg/m3 (23) 3.3 μg/m3 (14) 23.0
 
Sept. 17, 2020, noon N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 31.0 μg/m3 (28) 5.7 μg/m3 (24) 28.0
 
Sept. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 11.0 μg/m3 (10) 4.3 μg/m3 (18) 18.0
 
Sept. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 15.0 μg/m3 (14) 6.2 μg/m3 (26) 26.0
 
Sept. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 25.0 μg/m3 (23) 4.3 μg/m3 (18) 23.0
 
Sept. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 33.0 μg/m3 (30) 4.0 μg/m3 (17) 30.0
 
Sept. 17, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 34.0 μg/m3 (31) 3.8 μg/m3 (16) 31.0
 
Sept. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 34.0 μg/m3 (31) 6.5 μg/m3 (27) 31.0
 
Sept. 17, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 35.0 μg/m3 (32) 9.9 μg/m3 (41) 41.0
 
Sept. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 31.0 μg/m3 (28) 4.5 μg/m3 (19) 28.0