ID: 2164

AQSQID: 460290002

Site Name: Watertown

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

Updated: May 12, 2021, 4:45 a.m.

Location: Watertown (3rd Ave Swest), SD

Reporting: True, Located: True

Current AQI: 52.0

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
May 12, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 44.7 μg/m3 (42) 12.4 μg/m3 (52) 52.0
 
May 12, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 31.8 μg/m3 (30) 8.9 μg/m3 (38) 38.0
 
May 12, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 25.5 μg/m3 (24) 8.5 μg/m3 (36) 38.0
 
May 12, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 23.9 μg/m3 (23) 3.6 μg/m3 (16) 39.0
 
May 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 21.7 μg/m3 (21) 4.6 μg/m3 (20) 38.0
 
May 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 23.9 μg/m3 (23) 4.1 μg/m3 (18) 38.0
 
May 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 31.8 μg/m3 (30) 3.7 μg/m3 (16) 38.0
 
May 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 31.1 μg/m3 (29) 5.6 μg/m3 (24) 37.0
 
May 11, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 31.6 μg/m3 (30) 4.1 μg/m3 (18) 37.0
 
May 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 26.9 μg/m3 (25) 4.6 μg/m3 (20) 37.0
 
May 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 25.2 μg/m3 (24) 4.6 μg/m3 (20) 34.0
 
May 11, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 41.3 μg/m3 (39) 6.3 μg/m3 (27) 39.0
 
May 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 38.3 μg/m3 (36) 7.0 μg/m3 (30) 36.0
 
May 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 49.0 μg/m3 (46) 8.0 μg/m3 (34) 46.0
 
May 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 86.8 μg/m3 (67) 10.9 μg/m3 (46) 67.0
 
May 11, 2021, noon N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 77.3 μg/m3 (63) 13.4 μg/m3 (54) 63.0
 
May 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 37.5 μg/m3 (35) 9.4 μg/m3 (40) 40.0
 
May 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 29.3 μg/m3 (28) 6.3 μg/m3 (27) 28.0
 
May 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 20.3 μg/m3 (19) 6.5 μg/m3 (28) 28.0
 
May 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 20.3 μg/m3 (19) 5.8 μg/m3 (25) 25.0
 
May 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 21.5 μg/m3 (20) 5.3 μg/m3 (23) 23.0
 
May 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 33.0 μg/m3 (31) 5.1 μg/m3 (22) 31.0
 
May 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 24.4 μg/m3 (23) 4.6 μg/m3 (20) 23.0
 
May 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 27.6 μg/m3 (26) 6.6 μg/m3 (28) 28.0
 
May 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 22.4 μg/m3 (21) 8.0 μg/m3 (34) 34.0
 
May 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 22.7 μg/m3 (22) 6.5 μg/m3 (28) 30.0
 
May 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 22.0 μg/m3 (21) 6.3 μg/m3 (27) 35.0
 
May 11, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 17.6 μg/m3 (17) 3.7 μg/m3 (16) 37.0
 
May 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 20.5 μg/m3 (19) 5.4 μg/m3 (23) 37.0
 
May 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 15.7 μg/m3 (15) 6.8 μg/m3 (29) 36.0
 
May 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 31.6 μg/m3 (30) 7.5 μg/m3 (32) 34.0
 
May 10, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 15.9 μg/m3 (15) 1.1 μg/m3 (5) 33.0
 
May 10, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 14.0 μg/m3 (13) 2.5 μg/m3 (11) 35.0
 
May 10, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 14.0 μg/m3 (13) 4.9 μg/m3 (21) 35.0
 
May 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 27.4 μg/m3 (26) 7.5 μg/m3 (32) 34.0
 
May 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 10.8 μg/m3 (10) 6.6 μg/m3 (28) 33.0
 
May 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 5.8 μg/m3 (6) 6.6 μg/m3 (28) 31.0
 
May 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 8.2 μg/m3 (8) 3.4 μg/m3 (15) 27.0
 
May 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 9.1 μg/m3 (9) 4.4 μg/m3 (19) 25.0
 
May 10, 2021, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 7.2 μg/m3 (7) 4.4 μg/m3 (19) 20.0
 
May 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 10.3 μg/m3 (10) 1.8 μg/m3 (8) 17.0
 
May 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 11.7 μg/m3 (11) 2.4 μg/m3 (10) 18.0
 
May 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 9.4 μg/m3 (9) 1.5 μg/m3 (7) 20.0
 
May 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 13.5 μg/m3 (13) 2.4 μg/m3 (10) 21.0
 
May 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 16.4 μg/m3 (16) 5.6 μg/m3 (24) 24.0
 
May 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 13.7 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
May 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 14.4 μg/m3 (14) 6.5 μg/m3 (28) 31.0
 
May 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 10.8 μg/m3 (10) 6.8 μg/m3 (29) 34.0
 
May 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 9.4 μg/m3 (9) 4.6 μg/m3 (20) 31.0
 
May 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 16.1 μg/m3 (15) 5.1 μg/m3 (22) 32.0
 
May 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 15.7 μg/m3 (15) 4.4 μg/m3 (19) 35.0
 
May 10, 2021, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 16.9 μg/m3 (16) 6.1 μg/m3 (26) 38.0
 
May 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 13.7 μg/m3 (13) 6.1 μg/m3 (26) 38.0
 
May 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 19.9 μg/m3 (19) 4.4 μg/m3 (19) 39.0
 
May 9, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 15.9 μg/m3 (15) 4.6 μg/m3 (20) 44.0
 
May 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 10.1 μg/m3 (10) 2.0 μg/m3 (9) 43.0
 
May 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 10.6 μg/m3 (10) 3.7 μg/m3 (16) 41.0
 
May 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 11.8 μg/m3 (11) 4.1 μg/m3 (18) 40.0
 
May 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 9.9 μg/m3 (10) 3.7 μg/m3 (16) 39.0
 
May 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 15.0 μg/m3 (14) 3.2 μg/m3 (14) 30.0
 
May 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 16.0 μg/m3 (15) 4.1 μg/m3 (18) 21.0
 
May 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 10.8 μg/m3 (10) 2.4 μg/m3 (10) 18.0
 
May 9, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 8.6 μg/m3 (8) 1.7 μg/m3 (8) 17.0
 
May 9, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 9.4 μg/m3 (9) 2.7 μg/m3 (12) 21.0
 
May 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 6.4 μg/m3 (6) 4.8 μg/m3 (20) 23.0
 
May 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 8.9 μg/m3 (9) 3.6 μg/m3 (16) 25.0
 
May 9, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 5.2 μg/m3 (5) 3.2 μg/m3 (14) 25.0
 
May 9, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 6.0 μg/m3 (6) 2.7 μg/m3 (12) 22.0
 
May 9, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 5.3 μg/m3 (5) 2.9 μg/m3 (13) 23.0
 
May 9, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 6.2 μg/m3 (6) 2.4 μg/m3 (10) 23.0
 
May 9, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 7.2 μg/m3 (7) 1.7 μg/m3 (8) 22.0
 
May 9, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 6.0 μg/m3 (6) 4.4 μg/m3 (19) 25.0
 
May 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 7.4 μg/m3 (7) 6.3 μg/m3 (27) 28.0
 
May 9, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 8.1 μg/m3 (8) 6.8 μg/m3 (29) 30.0
 
May 9, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 10.3 μg/m3 (10) 6.1 μg/m3 (26) 30.0
 
May 9, 2021, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 11.3 μg/m3 (11) 5.8 μg/m3 (25) 28.0
 
May 8, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 10.3 μg/m3 (10) 0.6 μg/m3 (3) 33.0
 
May 8, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 8.6 μg/m3 (8) 1.7 μg/m3 (8) 35.0
 
May 8, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 7.0 μg/m3 (7) 6.3 μg/m3 (27) 37.0
 
May 8, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 12.5 μg/m3 (12) 7.8 μg/m3 (33) 35.0
 
May 8, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 15.4 μg/m3 (15) 2.9 μg/m3 (13) 37.0
 
May 8, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 22.2 μg/m3 (21) 4.1 μg/m3 (18) 33.0
 
May 8, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 25.7 μg/m3 (24) 6.8 μg/m3 (29) 30.0
 
May 8, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 23.4 μg/m3 (22) 7.8 μg/m3 (33) 33.0
 
May 8, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 27.1 μg/m3 (26) 7.5 μg/m3 (32) 32.0
 
May 8, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 42.9 μg/m3 (40) 7.3 μg/m3 (31) 40.0
 
May 8, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 33.7 μg/m3 (32) 6.5 μg/m3 (28) 32.0
 
May 8, 2021, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 20.3 μg/m3 (19) 0.8 μg/m3 (4) 27.0
 
May 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 13.4 μg/m3 (13) 0.3 μg/m3 (2) 29.0
 
May 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 15.6 μg/m3 (15) 2.9 μg/m3 (13) 30.0
 
May 8, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 22.0 μg/m3 (21) 4.6 μg/m3 (20) 31.0
 
May 8, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 21.3 μg/m3 (20) 2.4 μg/m3 (10) 32.0
 
May 8, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 21.7 μg/m3 (21) 3.6 μg/m3 (16) 29.0
 
May 8, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 28.1 μg/m3 (27) 7.7 μg/m3 (33) 33.0
 
May 8, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 35.4 μg/m3 (33) 7.0 μg/m3 (30) 33.0
 
May 8, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 36.1 μg/m3 (34) 5.6 μg/m3 (24) 34.0
 
May 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 37.1 μg/m3 (35) 8.0 μg/m3 (34) 35.0
 
May 8, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 42.2 μg/m3 (40) 9.0 μg/m3 (38) 40.0
 
May 8, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 27.2 μg/m3 (26) 4.3 μg/m3 (18) 37.0
 
May 8, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 27.4 μg/m3 (26) 1.8 μg/m3 (8) 39.0
 
May 7, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 20.9 μg/m3 (20) 2.2 μg/m3 (10) 38.0
 
May 7, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 19.3 μg/m3 (18) 2.2 μg/m3 (10) 38.0
 
May 7, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 26.9 μg/m3 (25) 1.3 μg/m3 (6) 38.0
 
May 7, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 19.7 μg/m3 (19) 2.9 μg/m3 (13) 38.0
 
May 7, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 23.5 μg/m3 (22) 5.3 μg/m3 (23) 36.0
 
May 7, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 20.4 μg/m3 (19) 7.0 μg/m3 (30) 36.0
 
May 7, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 17.2 μg/m3 (16) 6.3 μg/m3 (27) 36.0
 
May 7, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 35.6 μg/m3 (33) 6.6 μg/m3 (28) 35.0
 
May 7, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 16.7 μg/m3 (16) 2.7 μg/m3 (12) 34.0
 
May 7, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 31.8 μg/m3 (30) 4.8 μg/m3 (20) 33.0
 
May 7, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 30.8 μg/m3 (29) 5.8 μg/m3 (25) 29.0
 
May 7, 2021, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 28.3 μg/m3 (27) 3.6 μg/m3 (16) 27.0
 
May 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 29.3 μg/m3 (28) 4.1 μg/m3 (18) 28.0
 
May 7, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 23.0 μg/m3 (22) 5.8 μg/m3 (25) 25.0
 
May 7, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 24.4 μg/m3 (23) 8.0 μg/m3 (34) 34.0
 
May 7, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 24.2 μg/m3 (23) 5.8 μg/m3 (25) 25.0
 
May 7, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 23.0 μg/m3 (22) 5.3 μg/m3 (23) 27.0
 
May 7, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 20.5 μg/m3 (19) 7.3 μg/m3 (31) 31.0
 
May 7, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 24.5 μg/m3 (23) 6.6 μg/m3 (28) 32.0
 
May 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 44.1 μg/m3 (41) 8.5 μg/m3 (36) 41.0
 
May 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 72.9 μg/m3 (60) 14.6 μg/m3 (57) 60.0
 
May 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 27.2 μg/m3 (26) 9.5 μg/m3 (40) 40.0
 
May 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 24.7 μg/m3 (23) 8.0 μg/m3 (34) 38.0
 
May 7, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 22.5 μg/m3 (21) 5.1 μg/m3 (22) 42.0
 
May 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 26.0 μg/m3 (25) 5.8 μg/m3 (25) 43.0
 
May 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 22.3 μg/m3 (21) 4.1 μg/m3 (18) 43.0
 
May 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 20.4 μg/m3 (19) 3.4 μg/m3 (15) 42.0
 
May 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 35.4 μg/m3 (33) 4.9 μg/m3 (21) 40.0
 
May 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 35.9 μg/m3 (34) 7.1 μg/m3 (30) 39.0
 
May 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 22.8 μg/m3 (22) 5.6 μg/m3 (24) 40.0
 
May 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 42.9 μg/m3 (40) 6.6 μg/m3 (28) 40.0
 
May 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 50.5 μg/m3 (47) 9.7 μg/m3 (41) 47.0
 
May 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 58.7 μg/m3 (53) 9.4 μg/m3 (40) 53.0
 
May 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 8.2 μg/m3 (8) 9.2 μg/m3 (39) 39.0
 
May 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 15.9 μg/m3 (15) 6.1 μg/m3 (26) 26.0
 
May 6, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 13.7 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
May 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 11.7 μg/m3 (11) 6.5 μg/m3 (28) 28.0
 
May 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 12.5 μg/m3 (12) 6.3 μg/m3 (27) 27.0
 
May 6, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 11.5 μg/m3 (11) 6.8 μg/m3 (29) 29.0
 
May 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 8.8 μg/m3 (9) 5.8 μg/m3 (25) 25.0
 
May 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 8.6 μg/m3 (8) 5.8 μg/m3 (25) 25.0
 
May 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 11.2 μg/m3 (11) 7.1 μg/m3 (30) 30.0
 
May 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 12.5 μg/m3 (12) 4.4 μg/m3 (19) 19.0
 
May 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 15.4 μg/m3 (15) 6.8 μg/m3 (29) 29.0
 
May 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 24.7 μg/m3 (23) 8.3 μg/m3 (35) 35.0
 
May 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 24.1 μg/m3 (23) 5.8 μg/m3 (25) 25.0
 
May 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 21.8 μg/m3 (21) 6.8 μg/m3 (29) 29.0
 
May 6, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 16.7 μg/m3 (16) 6.1 μg/m3 (26) 34.0
 
May 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 16.2 μg/m3 (15) 7.1 μg/m3 (30) 35.0
 
May 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 14.7 μg/m3 (14) 7.0 μg/m3 (30) 34.0
 
May 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 16.9 μg/m3 (16) 4.4 μg/m3 (19) 35.0
 
May 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 17.6 μg/m3 (17) 4.6 μg/m3 (20) 32.0
 
May 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 8.1 μg/m3 (8) 5.1 μg/m3 (22) 31.0
 
May 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 17.6 μg/m3 (17) 4.4 μg/m3 (19) 34.0
 
May 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 12.7 μg/m3 (12) 4.1 μg/m3 (18) 31.0
 
May 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 10.1 μg/m3 (10) 2.7 μg/m3 (12) 31.0
 
May 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 14.9 μg/m3 (14) 3.1 μg/m3 (13) 29.0
 
May 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 21.7 μg/m3 (21) 5.6 μg/m3 (24) 33.0
 
May 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 37.1 μg/m3 (35) 7.3 μg/m3 (31) 35.0
 
May 5, 2021, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 54.4 μg/m3 (51) 8.3 μg/m3 (35) 51.0
 
May 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 20.8 μg/m3 (20) 6.1 μg/m3 (26) 26.0
 
May 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 64.0 μg/m3 (56) 6.3 μg/m3 (27) 56.0
 
May 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 12.2 μg/m3 (12) 5.1 μg/m3 (22) 23.0
 
May 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 23.2 μg/m3 (22) 6.3 μg/m3 (27) 27.0
 
May 5, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 18.8 μg/m3 (18) 5.6 μg/m3 (24) 27.0
 
May 5, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 35.1 μg/m3 (33) 6.1 μg/m3 (26) 33.0
 
May 5, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 27.1 μg/m3 (26) 5.1 μg/m3 (22) 28.0
 
May 5, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 41.2 μg/m3 (39) 8.7 μg/m3 (37) 39.0