ID: 1010

AQSQID: 171613002

Site Name: Rock_Is

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

Updated: April 11, 2021, 3:43 a.m.

Location: Rock Is (Dyke Dr), IL

Reporting: True, Located: True

Current AQI: 17.0

Rock Is (Dyke Dr) IL, US: 41.5144, -90.5172

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 0.9 μg/m3 (4) 17.0
 
April 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 1.0 μg/m3 (5) 16.0
 
April 11, 2021, midnight N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 2.2 μg/m3 (10) 16.0
 
April 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 1.2 μg/m3 (5) 17.0
 
April 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A -1.5 μg/m3 (0) 17.0
 
April 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 2.4 μg/m3 (10) 18.0
 
April 10, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A -1.8 μg/m3 (0) 19.0
 
April 10, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A -0.6 μg/m3 (0) 20.0
 
April 10, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A -1.9 μg/m3 (0) 19.0
 
April 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 1.3 μg/m3 (6) 19.0
 
April 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 1.2 μg/m3 (5) 18.0
 
April 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 5.5 μg/m3 (23) 23.0
 
April 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A -0.3 μg/m3 (0) 20.0
 
April 10, 2021, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 2.1 μg/m3 (9) 22.0
 
April 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 0.3 μg/m3 (2) 23.0
 
April 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 0.6 μg/m3 (3) 24.0
 
April 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A -1.4 μg/m3 (0) 22.0
 
April 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 3.5 μg/m3 (15) 22.0
 
April 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A -0.4 μg/m3 (0) 21.0
 
April 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 1.2 μg/m3 (5) 20.0
 
April 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 4.4 μg/m3 (19) 19.0
 
April 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 0.8 μg/m3 (4) 17.0
 
April 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 1.6 μg/m3 (7) 16.0
 
April 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 2.3 μg/m3 (10) 18.0
 
April 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 3.0 μg/m3 (13) 17.0
 
April 10, 2021, midnight N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 4.5 μg/m3 (19) 20.0
 
April 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A -0.7 μg/m3 (0) 21.0
 
April 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 1.2 μg/m3 (5) 19.0
 
April 9, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 4.1 μg/m3 (18) 18.0
 
April 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 2.4 μg/m3 (10) 18.0
 
April 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 3.8 μg/m3 (16) 19.0
 
April 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 4.9 μg/m3 (21) 21.0
 
April 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 4.0 μg/m3 (17) 20.0
 
April 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 3.5 μg/m3 (15) 21.0
 
April 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 1.7 μg/m3 (8) 20.0
 
April 9, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 0.0 μg/m3 (0) 18.0
 
April 9, 2021, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 1.7 μg/m3 (8) 17.0
 
April 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 3.2 μg/m3 (14) 17.0
 
April 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 2.5 μg/m3 (11) 17.0
 
April 9, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 0.8 μg/m3 (4) 17.0
 
April 9, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 2.5 μg/m3 (11) 19.0
 
April 9, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 5.9 μg/m3 (25) 25.0
 
April 9, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 10.6 μg/m3 (45) 45.0
 
April 9, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 2.6 μg/m3 (11) 20.0
 
April 9, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A -0.1 μg/m3 (0) 19.0
 
April 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A -1.3 μg/m3 (0) 20.0
 
April 9, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 0.3 μg/m3 (2) 21.0
 
April 9, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 4.9 μg/m3 (21) 21.0
 
April 9, 2021, midnight N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 1.2 μg/m3 (5) 23.0
 
April 8, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
April 8, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 4.8 μg/m3 (20) 29.0
 
April 8, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 3.0 μg/m3 (13) 27.0
 
April 8, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
April 8, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 4.1 μg/m3 (18) 29.0
 
April 8, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 1.3 μg/m3 (6) 31.0
 
April 8, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 2.4 μg/m3 (10) 31.0
 
April 8, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.6 μg/m3 (16) 30.0
 
April 8, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 1.3 μg/m3 (6) 28.0
 
April 8, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A -1.2 μg/m3 (0) 25.0
 
April 8, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 5.4 μg/m3 (23) 23.0
 
April 8, 2021, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 3.1 μg/m3 (13) 19.0
 
April 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 5.3 μg/m3 (23) 23.0
 
April 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 8, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 13.9 μg/m3 (55) 55.0
 
April 8, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 4.3 μg/m3 (18) 26.0
 
April 8, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 4.9 μg/m3 (21) 33.0
 
April 8, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 6.6 μg/m3 (28) 36.0
 
April 8, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A -0.9 μg/m3 (0) 38.0
 
April 8, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 3.4 μg/m3 (15) 39.0
 
April 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A -1.1 μg/m3 (0) 41.0
 
April 8, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 12.4 μg/m3 (52) 52.0
 
April 8, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 17.3 μg/m3 (62) 62.0
 
April 8, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 10.6 μg/m3 (45) 45.0
 
April 7, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 5.2 μg/m3 (22) 35.0
 
April 7, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
April 7, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.5 μg/m3 (15) 40.0
 
April 7, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 3.0 μg/m3 (13) 41.0
 
April 7, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 4.5 μg/m3 (19) 33.0
 
April 7, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 10.2 μg/m3 (43) 43.0
 
April 7, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 9.4 μg/m3 (40) 40.0
 
April 7, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 10.7 μg/m3 (45) 45.0
 
April 7, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 7, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 14.0 μg/m3 (55) 55.0
 
April 7, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 9.6 μg/m3 (40) 40.0
 
April 7, 2021, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 12.2 μg/m3 (52) 52.0
 
April 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 15.2 μg/m3 (58) 58.0
 
April 7, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 11.8 μg/m3 (50) 50.0
 
April 7, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 10.5 μg/m3 (44) 44.0
 
April 7, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 11.6 μg/m3 (49) 49.0
 
April 7, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 12.5 μg/m3 (52) 52.0
 
April 7, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 11.3 μg/m3 (48) 48.0
 
April 7, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 13.9 μg/m3 (55) 55.0
 
April 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 17.5 μg/m3 (63) 63.0
 
April 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 12.2 μg/m3 (52) 52.0
 
April 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 15.4 μg/m3 (58) 58.0
 
April 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 11.8 μg/m3 (50) 50.0
 
April 7, 2021, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 12.8 μg/m3 (53) 53.0
 
April 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 12.2 μg/m3 (52) 52.0
 
April 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 7.4 μg/m3 (31) 46.0
 
April 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 11.2 μg/m3 (47) 48.0
 
April 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 8.5 μg/m3 (36) 50.0
 
April 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 10.6 μg/m3 (45) 49.0
 
April 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 11.3 μg/m3 (48) 49.0
 
April 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 11.1 μg/m3 (47) 47.0
 
April 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 7.6 μg/m3 (32) 43.0
 
April 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 8.9 μg/m3 (38) 38.0
 
April 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 6.9 μg/m3 (29) 31.0
 
April 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 12.4 μg/m3 (52) 52.0
 
April 6, 2021, noon N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 13.1 μg/m3 (54) 54.0
 
April 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 13.6 μg/m3 (55) 55.0
 
April 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 16.7 μg/m3 (61) 61.0
 
April 6, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 9.8 μg/m3 (41) 41.0
 
April 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 8.3 μg/m3 (35) 35.0
 
April 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 7.0 μg/m3 (30) 31.0
 
April 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.2 μg/m3 (35) 35.0
 
April 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 10.7 μg/m3 (45) 45.0
 
April 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 10.3 μg/m3 (43) 43.0
 
April 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 9.8 μg/m3 (41) 41.0
 
April 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 6, 2021, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 8.9 μg/m3 (38) 43.0
 
April 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 10.3 μg/m3 (43) 46.0
 
April 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 17.6 μg/m3 (63) 63.0
 
April 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 7.6 μg/m3 (32) 48.0
 
April 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 5.6 μg/m3 (24) 48.0
 
April 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 5.8 μg/m3 (25) 48.0
 
April 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 10.2 μg/m3 (43) 48.0
 
April 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 8.3 μg/m3 (35) 44.0
 
April 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 7.0 μg/m3 (30) 40.0
 
April 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 13.6 μg/m3 (55) 55.0
 
April 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 13.4 μg/m3 (54) 54.0
 
April 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 12.0 μg/m3 (50) 50.0
 
April 5, 2021, noon N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 16.9 μg/m3 (62) 62.0
 
April 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 12.7 μg/m3 (53) 53.0
 
April 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 14.4 μg/m3 (56) 56.0
 
April 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 14.9 μg/m3 (57) 57.0
 
April 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 14.5 μg/m3 (57) 57.0
 
April 5, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 14.2 μg/m3 (56) 56.0
 
April 5, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 12.8 μg/m3 (53) 53.0
 
April 5, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 12.5 μg/m3 (52) 52.0
 
April 5, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 13.1 μg/m3 (54) 54.0
 
April 5, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 14.7 μg/m3 (57) 57.0
 
April 5, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 18.8 μg/m3 (66) 66.0
 
April 5, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 23.2 μg/m3 (75) 75.0
 
April 5, 2021, midnight N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 22.5 μg/m3 (73) 74.0
 
April 4, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 21.3 μg/m3 (71) 94.0
 
April 4, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 16.2 μg/m3 (60) 91.0
 
April 4, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 16.0 μg/m3 (60) 91.0
 
April 4, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 11.2 μg/m3 (47) 84.0
 
April 4, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 13.9 μg/m3 (55) 81.0
 
April 4, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 14.7 μg/m3 (57) 78.0
 
April 4, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 21.1 μg/m3 (70) 74.0
 
April 4, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 22.9 μg/m3 (74) 74.0
 
April 4, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 26.5 μg/m3 (82) 82.0
 
April 4, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 22.6 μg/m3 (74) 74.0
 
April 4, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 31.6 μg/m3 (93) 93.0
 
April 4, 2021, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 32.7 μg/m3 (95) 95.0
 
April 4, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 37.0 μg/m3 (105) 105.0
 
April 4, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A N/A 36.3 μg/m3 (103) 103.0
 
April 4, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 41.6 μg/m3 (117) 117.0
 
April 4, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 43.4 μg/m3 (121) 121.0
 
April 4, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 40.4 μg/m3 (114) 114.0
 
April 4, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 10.0
 
April 4, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 38.4 μg/m3 (109) 109.0
 
April 4, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 38.4 μg/m3 (109) 109.0
 
April 4, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 31.7 μg/m3 (93) 93.0