AQSQID: 460290002

Site Name: Watertown

Location: Watertown (3rd Ave Swest), SD

Reporting: True, Located: True

Current AQI: 33.0

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
April 7, 2020, 8 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) 7.4 μg/m3 (31) 33.0
 
April 7, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 34.0 μg/m3 (31) 9.1 μg/m3 (38) 38.0
 
April 7, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 23.0 μg/m3 (21) 8.6 μg/m3 (36) 36.0
 
April 7, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 13.0 μg/m3 (12) 9.3 μg/m3 (39) 39.0
 
April 7, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 19.0 μg/m3 (17) 13.7 μg/m3 (54) 54.0
 
April 7, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 24.0 μg/m3 (22) 17.1 μg/m3 (61) 61.0
 
April 7, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 25.0 μg/m3 (23) 15.1 μg/m3 (57) 57.0
 
April 7, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 19.0 μg/m3 (17) 13.9 μg/m3 (54) 54.0
 
April 7, 2020, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 23.0 μg/m3 (21) 16.6 μg/m3 (60) 60.0
 
April 7, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 20.0 μg/m3 (18) 19.8 μg/m3 (67) 67.0
 
April 7, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 17.0 μg/m3 (15) 14.8 μg/m3 (56) 56.0
 
April 7, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 17.0 μg/m3 (15) 10.2 μg/m3 (42) 42.0
 
April 7, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 18.0 μg/m3 (16) 13.6 μg/m3 (53) 53.0
 
April 7, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 18.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
April 7, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 21.0 μg/m3 (19) 7.3 μg/m3 (30) 30.0
 
April 7, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 21.0 μg/m3 (19) 9.4 μg/m3 (39) 39.0
 
April 7, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 19.0 μg/m3 (17) 11.4 μg/m3 (48) 48.0
 
April 7, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 23.0 μg/m3 (21) 11.9 μg/m3 (50) 50.0
 
April 7, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 25.0 μg/m3 (23) 10.5 μg/m3 (44) 44.0
 
April 7, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 25.0 μg/m3 (23) 10.3 μg/m3 (43) 43.0
 
April 7, 2020, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 24.0 μg/m3 (22) 13.2 μg/m3 (53) 53.0
 
April 6, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 38.0 μg/m3 (35) 16.5 μg/m3 (60) 60.0
 
April 6, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 46.0 μg/m3 (42) 21.6 μg/m3 (70) 70.0
 
April 6, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 53.0 μg/m3 (48) 25.9 μg/m3 (80) 80.0
 
April 6, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 62.0 μg/m3 (54) 25.4 μg/m3 (79) 79.0
 
April 6, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 93.0 μg/m3 (69) 27.1 μg/m3 (82) 82.0
 
April 6, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 102.0 μg/m3 (74) 31.9 μg/m3 (92) 92.0
 
April 6, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 59.0 μg/m3 (52) 31.6 μg/m3 (92) 92.0
 
April 6, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 54.0 μg/m3 (49) 28.8 μg/m3 (86) 86.0
 
April 6, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 47.0 μg/m3 (43) 19.8 μg/m3 (67) 67.0
 
April 6, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 51.0 μg/m3 (46) 20.7 μg/m3 (69) 69.0
 
April 6, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 41.0 μg/m3 (37) 22.7 μg/m3 (73) 73.0
 
April 6, 2020, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 24.0 μg/m3 (22) 9.4 μg/m3 (39) 39.0
 
April 6, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 22.0 μg/m3 (20) 14.6 μg/m3 (56) 56.0
 
April 6, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 21.0 μg/m3 (19) 11.4 μg/m3 (48) 48.0
 
April 6, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 14.0 μg/m3 (13) 13.9 μg/m3 (54) 54.0
 
April 6, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
April 6, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
April 6, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 16.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
April 6, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 21.0 μg/m3 (19) 15.1 μg/m3 (57) 57.0
 
April 6, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 14.0 μg/m3 (13) 10.7 μg/m3 (45) 45.0
 
April 6, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 11.0 μg/m3 (10) 4.4 μg/m3 (18) 25.0
 
April 6, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 18.0 μg/m3 (16) 4.3 μg/m3 (18) 25.0
 
April 6, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 17.0 μg/m3 (15) 6.8 μg/m3 (28) 28.0
 
April 6, 2020, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 17.0 μg/m3 (15) 4.4 μg/m3 (18) 32.0
 
April 5, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 14.0 μg/m3 (13) 5.1 μg/m3 (21) 34.0
 
April 5, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 15.0 μg/m3 (14) 5.8 μg/m3 (24) 33.0
 
April 5, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 14.0 μg/m3 (13) 2.0 μg/m3 (8) 32.0
 
April 5, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 13.0 μg/m3 (12) 4.4 μg/m3 (18) 32.0
 
April 5, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 11.0 μg/m3 (10) 4.1 μg/m3 (17) 32.0
 
April 5, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 10.0 μg/m3 (9) 3.6 μg/m3 (15) 30.0
 
April 5, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 15.0 μg/m3 (14) 4.6 μg/m3 (19) 28.0
 
April 5, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 28.0
 
April 5, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 5.8 μg/m3 (24) 24.0
 
April 5, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 9.0 μg/m3 (8) 6.8 μg/m3 (28) 28.0
 
April 5, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 11.0 μg/m3 (10) 6.8 μg/m3 (28) 28.0
 
April 5, 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) 8.4 μg/m3 (35) 35.0
 
April 5, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 15.0 μg/m3 (14) 7.0 μg/m3 (29) 29.0
 
April 5, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 7.0 μg/m3 (6) 9.2 μg/m3 (38) 38.0
 
April 5, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 6.3 μg/m3 (26) 26.0
 
April 5, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 10.0 μg/m3 (9) 7.3 μg/m3 (30) 30.0
 
April 5, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 11.0 μg/m3 (10) 6.5 μg/m3 (27) 27.0
 
April 5, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 5.6 μg/m3 (23) 24.0
 
April 5, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.0 μg/m3 (9) 6.3 μg/m3 (26) 26.0
 
April 5, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 10.0 μg/m3 (9) 8.2 μg/m3 (34) 34.0
 
April 5, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 12.0 μg/m3 (11) 6.5 μg/m3 (27) 27.0
 
April 5, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 18.0 μg/m3 (16) 7.3 μg/m3 (30) 30.0
 
April 5, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 17.0 μg/m3 (15) 8.2 μg/m3 (34) 34.0
 
April 5, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 12.0 μg/m3 (11) 5.8 μg/m3 (24) 30.0
 
April 4, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 11.0 μg/m3 (10) 6.3 μg/m3 (26) 32.0
 
April 4, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 18.0 μg/m3 (16) 3.4 μg/m3 (14) 33.0
 
April 4, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 13.0 μg/m3 (12) 4.3 μg/m3 (18) 33.0
 
April 4, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 11.0 μg/m3 (10) 7.5 μg/m3 (31) 33.0
 
April 4, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 15.0 μg/m3 (14) 5.1 μg/m3 (21) 34.0
 
April 4, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 21.0 μg/m3 (19) 3.1 μg/m3 (13) 35.0
 
April 4, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 13.0 μg/m3 (12) 0.8 μg/m3 (3) 33.0
 
April 4, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 11.0 μg/m3 (10) 3.1 μg/m3 (13) 32.0
 
April 4, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 13.0 μg/m3 (12) 6.1 μg/m3 (25) 32.0
 
April 4, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
April 4, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 10.0 μg/m3 (9) 5.3 μg/m3 (22) 22.0
 
April 4, 2020, noon N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 13.0 μg/m3 (12) 6.1 μg/m3 (25) 25.0
 
April 4, 2020, 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) 10.2 μg/m3 (42) 42.0
 
April 4, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 12.0 μg/m3 (11) 3.1 μg/m3 (13) 13.0
 
April 4, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 15.0
 
April 4, 2020, 8 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) 0.1 μg/m3 (0) 14.0
 
April 4, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A 10.0 μg/m3 (9) 21.0 μg/m3 (69) 69.0
 
April 4, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 13.0 μg/m3 (12) 10.9 μg/m3 (45) 45.0
 
April 4, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 13.0 μg/m3 (12) 6.3 μg/m3 (26) 26.0
 
April 4, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 29.0 μg/m3 (26) 11.7 μg/m3 (49) 49.0
 
April 4, 2020, 3 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) 0.6 μg/m3 (2) 19.0
 
April 4, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 15.0 μg/m3 (14) 2.2 μg/m3 (9) 26.0
 
April 4, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 31.0
 
April 4, 2020, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 2.7 μg/m3 (11) 32.0
 
April 3, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 32.0
 
April 3, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) 8.0 μg/m3 (33) 33.0
 
April 3, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) 7.0 μg/m3 (29) 31.0
 
April 3, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 9.0 μg/m3 (8) 8.0 μg/m3 (33) 33.0
 
April 3, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 27.0
 
April 3, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 4.1 μg/m3 (17) 25.0
 
April 3, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 1.0 μg/m3 (4) 13.0
 
April 3, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) N/A 14.0
 
April 3, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 16.0 μg/m3 (15) 7.5 μg/m3 (31) 31.0
 
April 3, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 26.0 μg/m3 (24) 5.3 μg/m3 (22) 24.0
 
April 3, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 21.0 μg/m3 (19) 3.6 μg/m3 (15) 25.0
 
April 3, 2020, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
April 3, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 16.0 μg/m3 (15) 3.9 μg/m3 (16) 24.0
 
April 3, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 17.0 μg/m3 (15) 4.1 μg/m3 (17) 24.0
 
April 3, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
April 3, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 20.0 μg/m3 (18) 3.9 μg/m3 (16) 23.0
 
April 3, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 15.0 μg/m3 (14) 4.1 μg/m3 (17) 22.0
 
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 17.0 μg/m3 (15) 4.8 μg/m3 (20) 22.0
 
April 3, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 22.0
 
April 3, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 8.0 μg/m3 (7) 4.6 μg/m3 (19) 22.0
 
April 3, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 28.0 μg/m3 (25) 6.8 μg/m3 (28) 28.0
 
April 3, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 26.0 μg/m3 (24) 5.8 μg/m3 (24) 24.0
 
April 3, 2020, 1 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) 5.4 μg/m3 (23) 25.0
 
April 3, 2020, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 62.0 μg/m3 (54) 5.1 μg/m3 (21) 54.0
 
April 2, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 18.0 μg/m3 (16) 4.8 μg/m3 (20) 20.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 20.0 μg/m3 (18) 6.1 μg/m3 (25) 25.0
 
April 2, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 12.0 μg/m3 (11) 3.9 μg/m3 (16) 17.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 6.0 μg/m3 (5) 4.8 μg/m3 (20) 20.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 6.0 μg/m3 (5) 4.4 μg/m3 (18) 18.0
 
April 2, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 5.0 μg/m3 (5) 4.6 μg/m3 (19) 19.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 2.0 μg/m3 (2) 1.7 μg/m3 (7) 16.0
 
April 2, 2020, 4 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) 0.8 μg/m3 (3) 15.0
 
April 2, 2020, 3 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) 3.9 μg/m3 (16) 16.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 8.0 μg/m3 (7) 4.1 μg/m3 (17) 17.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 5.0 μg/m3 (5) 0.6 μg/m3 (2) 15.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 1.0 μg/m3 (1) 0.3 μg/m3 (1) 14.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 3.0 μg/m3 (3) 2.2 μg/m3 (9) 14.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 6.0 μg/m3 (5) 4.6 μg/m3 (19) 19.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 8.0 μg/m3 (7) 6.1 μg/m3 (25) 25.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 10.0 μg/m3 (9) 8.5 μg/m3 (35) 35.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 11.0 μg/m3 (10) 10.5 μg/m3 (44) 44.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 11.0 μg/m3 (10) 6.8 μg/m3 (28) 28.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
April 2, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 9.0 μg/m3 (8) 9.0 μg/m3 (38) 38.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 12.0 μg/m3 (11) 8.7 μg/m3 (36) 36.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 11.0 μg/m3 (10) 11.2 μg/m3 (47) 47.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 14.0 μg/m3 (13) 12.6 μg/m3 (51) 51.0
 
April 2, 2020, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 17.0 μg/m3 (15) 11.6 μg/m3 (48) 48.0
 
April 1, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 28.0 μg/m3 (25) 10.2 μg/m3 (42) 42.0
 
April 1, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 26.0 μg/m3 (24) 10.9 μg/m3 (45) 45.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 48.0 μg/m3 (44) 14.2 μg/m3 (55) 55.0
 
April 1, 2020, 8 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) 11.2 μg/m3 (47) 47.0
 
April 1, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 33.0 μg/m3 (30) 10.5 μg/m3 (44) 44.0
 
April 1, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 34.0 μg/m3 (31) 12.4 μg/m3 (51) 51.0
 
April 1, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 32.0 μg/m3 (29) 14.8 μg/m3 (56) 56.0
 
April 1, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 27.0 μg/m3 (25) 12.4 μg/m3 (51) 51.0
 
April 1, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 28.0 μg/m3 (25) 14.4 μg/m3 (55) 55.0
 
April 1, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 27.0 μg/m3 (25) 10.7 μg/m3 (45) 45.0
 
April 1, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 22.0 μg/m3 (20) 7.5 μg/m3 (31) 31.0
 
April 1, 2020, noon N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 12.0 μg/m3 (11) 9.2 μg/m3 (38) 38.0
 
April 1, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 16.0 μg/m3 (15) 5.1 μg/m3 (21) 21.0
 
April 1, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 19.0
 
April 1, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 6.0 μg/m3 (5) 4.6 μg/m3 (19) 22.0
 
April 1, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 8.0 μg/m3 (7) 6.1 μg/m3 (25) 25.0
 
April 1, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 10.0 μg/m3 (9) 5.1 μg/m3 (21) 26.0
 
April 1, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 13.0 μg/m3 (12) 3.6 μg/m3 (15) 27.0
 
April 1, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 11.0 μg/m3 (10) 3.9 μg/m3 (16) 26.0
 
April 1, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 12.0 μg/m3 (11) 4.9 μg/m3 (20) 28.0
 
April 1, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 5.6 μg/m3 (23) 28.0
 
April 1, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 18.0 μg/m3 (16) 4.6 μg/m3 (19) 28.0
 
April 1, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 20.0 μg/m3 (18) 5.3 μg/m3 (22) 28.0
 
April 1, 2020, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 24.0 μg/m3 (22) 5.1 μg/m3 (21) 29.0
 
March 31, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 29.0 μg/m3 (26) 5.8 μg/m3 (24) 32.0
 
March 31, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 49.0 μg/m3 (45) 5.8 μg/m3 (24) 45.0
 
March 31, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 41.0 μg/m3 (37) 4.6 μg/m3 (19) 37.0