ID: 743

AQSQID: 450190046

Site Name: Cape Romain

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

Updated: April 11, 2021, 2:43 a.m.

Location: Awendaw (Bulls Is Rd), SC

Reporting: True, Located: True

Current AQI: 35.0

Awendaw (Bulls Is Rd) SC, US: 32.941002, -79.656998

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 11, 2021, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 8.2 μg/m3 (35) 35.0
 
April 11, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 3.2 μg/m3 (14) 36.0
 
April 10, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 3.6 μg/m3 (16) 36.0
 
April 10, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 5.6 μg/m3 (24) 36.0
 
April 10, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 4.4 μg/m3 (19) 36.0
 
April 10, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 4.5 μg/m3 (19) 37.0
 
April 10, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 5.1 μg/m3 (22) 38.0
 
April 10, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 6.1 μg/m3 (26) 38.0
 
April 10, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 5.5 μg/m3 (23) 39.0
 
April 10, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 6.3 μg/m3 (27) 39.0
 
April 10, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 8.8 μg/m3 (37) 38.0
 
April 10, 2021, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 7.1 μg/m3 (30) 38.0
 
April 10, 2021, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 6.6 μg/m3 (28) 34.0
 
April 10, 2021, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 7.1 μg/m3 (30) 30.0
 
April 10, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 9.1 μg/m3 (38) 38.0
 
April 10, 2021, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A 4.9 μg/m3 (21) 21.0
 
April 10, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 5.1 μg/m3 (22) 22.0
 
April 10, 2021, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A 5.6 μg/m3 (24) 24.0
 
April 10, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.9 μg/m3 (25) 25.0
 
April 10, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 6.5 μg/m3 (28) 28.0
 
April 10, 2021, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 6.7 μg/m3 (28) 28.0
 
April 10, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 4.7 μg/m3 (20) 29.0
 
April 10, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 6.6 μg/m3 (28) 34.0
 
April 10, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 7.0 μg/m3 (30) 34.0
 
April 10, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 7.7 μg/m3 (33) 33.0
 
April 9, 2021, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 9.8 μg/m3 (41) 41.0
 
April 9, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 8.7 μg/m3 (37) 44.0
 
April 9, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 11.9 μg/m3 (50) 50.0
 
April 9, 2021, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 9.6 μg/m3 (40) 40.0
 
April 9, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A 10.5 μg/m3 (44) 45.0
 
April 9, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) N/A N/A 12.1 μg/m3 (51) 51.0
 
April 9, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) N/A N/A 11.1 μg/m3 (47) 47.0
 
April 9, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 12.1 μg/m3 (51) 51.0
 
April 9, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 11.4 μg/m3 (48) 48.0
 
April 9, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 12.3 μg/m3 (52) 52.0
 
April 9, 2021, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 9.3 μg/m3 (39) 41.0
 
April 9, 2021, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 9.2 μg/m3 (39) 42.0
 
April 9, 2021, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 7.8 μg/m3 (33) 37.0
 
April 9, 2021, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 8.4 μg/m3 (36) 36.0
 
April 9, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 7.3 μg/m3 (31) 35.0
 
April 9, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 7.8 μg/m3 (33) 38.0
 
April 9, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 7.7 μg/m3 (33) 43.0
 
April 9, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 6.3 μg/m3 (27) 41.0
 
April 9, 2021, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 6.3 μg/m3 (27) 42.0
 
April 9, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 6.7 μg/m3 (28) 45.0
 
April 9, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 7.0 μg/m3 (30) 44.0
 
April 9, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 7.6 μg/m3 (32) 43.0
 
April 9, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 7.6 μg/m3 (32) 45.0
 
April 8, 2021, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 8.6 μg/m3 (36) 50.0
 
April 8, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 12.6 μg/m3 (53) 53.0
 
April 8, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 57.0 ppb (58) N/A N/A 13.3 μg/m3 (54) 58.0
 
April 8, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 58.0 ppb (61) N/A N/A 16.8 μg/m3 (61) 61.0
 
April 8, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 57.0 ppb (58) N/A N/A 16.9 μg/m3 (62) 62.0
 
April 8, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 53.0 ppb (50) N/A N/A 18.4 μg/m3 (65) 65.0
 
April 8, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 52.0 ppb (49) N/A N/A 21.7 μg/m3 (72) 72.0
 
April 8, 2021, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 54.0 ppb (50) N/A N/A 29.5 μg/m3 (88) 88.0
 
April 8, 2021, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 56.0 ppb (55) N/A N/A 28.0 μg/m3 (85) 85.0
 
April 8, 2021, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 47.0 ppb (44) N/A N/A 21.3 μg/m3 (71) 71.0
 
April 8, 2021, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 11.3 μg/m3 (48) 48.0
 
April 8, 2021, noon N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 9.7 μg/m3 (41) 41.0
 
April 8, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 8.9 μg/m3 (38) 39.0
 
April 8, 2021, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 8.7 μg/m3 (37) 45.0
 
April 8, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 7.5 μg/m3 (32) 48.0
 
April 8, 2021, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 8.6 μg/m3 (36) 48.0
 
April 8, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 9.8 μg/m3 (41) 50.0
 
April 8, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 10.1 μg/m3 (43) 50.0
 
April 8, 2021, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 10.7 μg/m3 (45) 50.0
 
April 8, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 14.4 μg/m3 (56) 56.0
 
April 8, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 16.9 μg/m3 (62) 62.0
 
April 8, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 56.0 ppb (55) N/A N/A 17.3 μg/m3 (62) 62.0
 
April 8, 2021, midnight N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 59.0 ppb (65) N/A N/A 20.0 μg/m3 (68) 68.0
 
April 7, 2021, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 64.0 ppb (81) N/A N/A 19.2 μg/m3 (66) 81.0
 
April 7, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 71.0 ppb (101) N/A N/A 21.4 μg/m3 (71) 101.0
 
April 7, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 69.0 ppb (97) N/A N/A 18.1 μg/m3 (64) 97.0
 
April 7, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 70.0 ppb (100) N/A N/A 19.2 μg/m3 (66) 100.0
 
April 7, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 67.0 ppb (91) N/A N/A 21.5 μg/m3 (71) 91.0
 
April 7, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 67.0 ppb (91) N/A N/A 19.1 μg/m3 (66) 91.0
 
April 7, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 71.0 ppb (101) N/A N/A 14.7 μg/m3 (57) 101.0
 
April 7, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 69.0 ppb (97) N/A N/A 18.3 μg/m3 (65) 97.0
 
April 7, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 63.0 ppb (78) N/A N/A 19.1 μg/m3 (66) 78.0
 
April 7, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 55.0 ppb (51) N/A N/A 24.3 μg/m3 (77) 77.0
 
April 7, 2021, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A 25.4 μg/m3 (79) 79.0
 
April 7, 2021, noon N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 23.8 μg/m3 (76) 76.0
 
April 7, 2021, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 43.0 ppb (40) N/A N/A 19.0 μg/m3 (66) 66.0
 
April 7, 2021, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 18.1 μg/m3 (64) 64.0
 
April 7, 2021, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 19.7 μg/m3 (67) 67.0
 
April 7, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 12.2 μg/m3 (52) 52.0
 
April 7, 2021, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 12.2 μg/m3 (52) 52.0
 
April 7, 2021, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 13.4 μg/m3 (54) 54.0
 
April 7, 2021, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 13.4 μg/m3 (54) 54.0
 
April 7, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 7, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 17.1 μg/m3 (62) 62.0
 
April 7, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 16.1 μg/m3 (60) 60.0
 
April 7, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 56.0 ppb (55) N/A N/A 17.7 μg/m3 (63) 63.0
 
April 6, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 64.0 ppb (81) N/A N/A 19.7 μg/m3 (67) 81.0
 
April 6, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 69.0 ppb (97) N/A N/A 19.6 μg/m3 (67) 97.0
 
April 6, 2021, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 64.0 ppb (81) N/A N/A 18.0 μg/m3 (64) 81.0
 
April 6, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 66.0 ppb (87) N/A N/A 18.7 μg/m3 (65) 87.0
 
April 6, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 63.0 ppb (78) N/A N/A 19.5 μg/m3 (67) 78.0
 
April 6, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 66.0 ppb (87) N/A N/A 16.8 μg/m3 (61) 87.0
 
April 6, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 69.0 ppb (97) N/A N/A 14.4 μg/m3 (56) 97.0
 
April 6, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 65.0 ppb (84) N/A N/A 18.2 μg/m3 (64) 84.0
 
April 6, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 59.0 ppb (65) N/A N/A 17.5 μg/m3 (63) 65.0
 
April 6, 2021, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 49.0 ppb (46) N/A N/A 13.8 μg/m3 (55) 55.0
 
April 6, 2021, 1 p.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 9.7 μg/m3 (41) 41.0
 
April 6, 2021, noon N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 10.9 μg/m3 (46) 46.0
 
April 6, 2021, 11 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 12.1 μg/m3 (51) 51.0
 
April 6, 2021, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 6, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 11.1 μg/m3 (47) 47.0
 
April 6, 2021, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 6, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 10.2 μg/m3 (43) 43.0
 
April 6, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 9.3 μg/m3 (39) 47.0
 
April 6, 2021, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 10.6 μg/m3 (45) 47.0
 
April 6, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 6, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 10.5 μg/m3 (44) 47.0
 
April 6, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 3.1 μg/m3 (13) 48.0
 
April 6, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A N/A 50.0
 
April 5, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 58.0 ppb (61) N/A N/A N/A 61.0
 
April 5, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 63.0 ppb (78) N/A N/A 11.1 μg/m3 (47) 78.0
 
April 5, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 61.0 ppb (71) N/A N/A 10.2 μg/m3 (43) 71.0
 
April 5, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 58.0 ppb (61) N/A N/A 10.0 μg/m3 (42) 61.0
 
April 5, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 56.0 ppb (55) N/A N/A 10.7 μg/m3 (45) 55.0
 
April 5, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (49) N/A N/A 12.1 μg/m3 (51) 51.0
 
April 5, 2021, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 13.2 μg/m3 (54) 54.0
 
April 5, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 57.0 ppb (58) N/A N/A 8.4 μg/m3 (36) 58.0
 
April 5, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 51.0 ppb (48) N/A N/A 9.7 μg/m3 (41) 48.0
 
April 5, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 10.9 μg/m3 (46) 46.0
 
April 5, 2021, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 39.0 ppb (37) N/A N/A 10.1 μg/m3 (43) 43.0
 
April 5, 2021, noon N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 5, 2021, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 6.6 μg/m3 (28) 28.0
 
April 5, 2021, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 5, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 8.4 μg/m3 (36) 36.0
 
April 5, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 7.2 μg/m3 (31) 31.0
 
April 5, 2021, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 7.1 μg/m3 (30) 30.0
 
April 5, 2021, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 7.6 μg/m3 (32) 33.0
 
April 5, 2021, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 6.5 μg/m3 (28) 38.0
 
April 5, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 7.2 μg/m3 (31) 45.0
 
April 5, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 7.9 μg/m3 (33) 47.0
 
April 5, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 9.2 μg/m3 (39) 50.0
 
April 5, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 8.0 μg/m3 (34) 50.0
 
April 4, 2021, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (58) N/A N/A 8.5 μg/m3 (36) 58.0
 
April 4, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 58.0 ppb (61) N/A N/A 7.1 μg/m3 (30) 61.0
 
April 4, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 7.7 μg/m3 (33) 51.0
 
April 4, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 7.0 μg/m3 (30) 51.0
 
April 4, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 7.5 μg/m3 (32) 50.0
 
April 4, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 8.4 μg/m3 (36) 47.0
 
April 4, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 4.2 μg/m3 (18) 50.0
 
April 4, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) N/A N/A 4.0 μg/m3 (17) 49.0
 
April 4, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 50.0 ppb (47) N/A N/A 4.4 μg/m3 (19) 47.0
 
April 4, 2021, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 47.0 ppb (44) N/A N/A 6.7 μg/m3 (28) 44.0
 
April 4, 2021, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 6.4 μg/m3 (27) 36.0
 
April 4, 2021, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 6.2 μg/m3 (26) 26.0
 
April 4, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 6.5 μg/m3 (28) 28.0
 
April 4, 2021, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 11.7 μg/m3 (49) 49.0
 
April 4, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 23.7 μg/m3 (76) 76.0
 
April 4, 2021, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 22.6 μg/m3 (74) 74.0
 
April 4, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 15.1 μg/m3 (58) 58.0
 
April 4, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 6.7 μg/m3 (28) 28.0
 
April 4, 2021, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 5.6 μg/m3 (24) 24.0
 
April 4, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A N/A 18.0
 
April 4, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 2.1 μg/m3 (9) 23.0
 
April 4, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
April 4, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 5.4 μg/m3 (23) 33.0
 
April 3, 2021, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 4.9 μg/m3 (21) 40.0
 
April 3, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 4.9 μg/m3 (21) 45.0
 
April 3, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 3.7 μg/m3 (16) 45.0
 
April 3, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 2.2 μg/m3 (10) 45.0
 
April 3, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 3.2 μg/m3 (14) 45.0