ID: 1422

AQSQID: 170650002

Site Name: Knight_P

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

Updated: April 10, 2021, 7:43 p.m.

Location: Mc Leansboro (Illinois Hwy 14), IL

Reporting: True, Located: True

Current AQI: 41.0

Mc Leansboro (Illinois Hwy 14) IL, US: 38.088902, -88.625

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 10, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 3.1 μg/m3 (13) 41.0
 
April 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 1.5 μg/m3 (7) 36.0
 
April 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 1.2 μg/m3 (5) 33.0
 
April 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 4.8 μg/m3 (20) 31.0
 
April 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A -4.0 μg/m3 (0) 32.0
 
April 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 4.8 μg/m3 (20) 31.0
 
April 10, 2021, noon N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 6.9 μg/m3 (29) 30.0
 
April 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 7.7 μg/m3 (33) 33.0
 
April 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 6.6 μg/m3 (28) 30.0
 
April 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 2.9 μg/m3 (13) 23.0
 
April 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 3.0 μg/m3 (13) 34.0
 
April 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 14.0 μg/m3 (55) 55.0
 
April 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 12.1 μg/m3 (51) 51.0
 
April 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
April 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 6.6 μg/m3 (28) 40.0
 
April 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A -0.4 μg/m3 (0) 40.0
 
April 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A -2.5 μg/m3 (0) 39.0
 
April 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 3.2 μg/m3 (14) 46.0
 
April 10, 2021, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 12.4 μg/m3 (52) 52.0
 
April 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 9.9 μg/m3 (42) 47.0
 
April 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 8.7 μg/m3 (37) 46.0
 
April 9, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 9.4 μg/m3 (40) 51.0
 
April 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 8.5 μg/m3 (36) 58.0
 
April 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 9.9 μg/m3 (42) 55.0
 
April 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 10.4 μg/m3 (44) 51.0
 
April 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 6.1 μg/m3 (26) 51.0
 
April 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 11.4 μg/m3 (48) 48.0
 
April 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 7.2 μg/m3 (31) 44.0
 
April 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 2.5 μg/m3 (11) 38.0
 
April 9, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 7.6 μg/m3 (32) 35.0
 
April 9, 2021, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 8.1 μg/m3 (34) 34.0
 
April 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 6.5 μg/m3 (28) 31.0
 
April 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 7.3 μg/m3 (31) 32.0
 
April 9, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 7.0 μg/m3 (30) 33.0
 
April 9, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 4.5 μg/m3 (19) 34.0
 
April 9, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A -0.8 μg/m3 (0) 33.0
 
April 9, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A -9.2 μg/m3 (0) 30.0
 
April 9, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.8 μg/m3 (25) 33.0
 
April 9, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 8.8 μg/m3 (37) 37.0
 
April 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 7.9 μg/m3 (33) 33.0
 
April 9, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 4.7 μg/m3 (20) 32.0
 
April 9, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 6.7 μg/m3 (28) 30.0
 
April 9, 2021, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 7.2 μg/m3 (31) 33.0
 
April 8, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 10.3 μg/m3 (43) 43.0
 
April 8, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 8.3 μg/m3 (35) 36.0
 
April 8, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 7.0 μg/m3 (30) 37.0
 
April 8, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 3.8 μg/m3 (16) 37.0
 
April 8, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.7 μg/m3 (16) 36.0
 
April 8, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
April 8, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 2.5 μg/m3 (11) 36.0
 
April 8, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 8.4 μg/m3 (36) 36.0
 
April 8, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 15.1 μg/m3 (58) 58.0
 
April 8, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 5.9 μg/m3 (25) 28.0
 
April 8, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.7 μg/m3 (16) 30.0
 
April 8, 2021, noon N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 0.9 μg/m3 (4) 30.0
 
April 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A -1.4 μg/m3 (0) 31.0
 
April 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 7.9 μg/m3 (33) 33.0
 
April 8, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 23.8 μg/m3 (76) 76.0
 
April 8, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 6.1 μg/m3 (26) 36.0
 
April 8, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 7.0 μg/m3 (30) 36.0
 
April 8, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A -3.2 μg/m3 (0) 35.0
 
April 8, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.4 μg/m3 (15) 36.0
 
April 8, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 5.9 μg/m3 (25) 36.0
 
April 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 3.4 μg/m3 (15) 31.0
 
April 8, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 7.2 μg/m3 (31) 33.0
 
April 8, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.8 μg/m3 (37) 37.0
 
April 8, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 7.2 μg/m3 (31) 34.0
 
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 3.7 μg/m3 (16) 35.0
 
April 7, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 1.2 μg/m3 (5) 36.0
 
April 7, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.8 μg/m3 (25) 37.0
 
April 7, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 5.6 μg/m3 (24) 38.0
 
April 7, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 7.1 μg/m3 (30) 39.0
 
April 7, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 6.1 μg/m3 (26) 38.0
 
April 7, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 3.6 μg/m3 (16) 37.0
 
April 7, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 8.5 μg/m3 (36) 36.0
 
April 7, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.1 μg/m3 (22) 34.0
 
April 7, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 9.3 μg/m3 (39) 39.0
 
April 7, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 13.2 μg/m3 (54) 54.0
 
April 7, 2021, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 12.6 μg/m3 (53) 53.0
 
April 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 13.5 μg/m3 (54) 54.0
 
April 7, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.6 μg/m3 (36) 36.0
 
April 7, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 15.0 μg/m3 (58) 58.0
 
April 7, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 15.5 μg/m3 (59) 59.0
 
April 7, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 10.1 μg/m3 (43) 43.0
 
April 7, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 12.6 μg/m3 (53) 53.0
 
April 7, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 11.2 μg/m3 (47) 47.0
 
April 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 15.0 μg/m3 (58) 58.0
 
April 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 17.1 μg/m3 (62) 62.0
 
April 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 18.9 μg/m3 (66) 66.0
 
April 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 13.8 μg/m3 (55) 55.0
 
April 7, 2021, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 12.6 μg/m3 (53) 53.0
 
April 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 10.1 μg/m3 (43) 55.0
 
April 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 9.4 μg/m3 (40) 58.0
 
April 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A N/A 13.8 μg/m3 (55) 61.0
 
April 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 13.4 μg/m3 (54) 68.0
 
April 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 13.1 μg/m3 (54) 58.0
 
April 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 14.2 μg/m3 (56) 56.0
 
April 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 13.2 μg/m3 (54) 54.0
 
April 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 15.9 μg/m3 (59) 59.0
 
April 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
April 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 5.3 μg/m3 (23) 42.0
 
April 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 12.2 μg/m3 (52) 52.0
 
April 6, 2021, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 13.6 μg/m3 (55) 55.0
 
April 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 15.4 μg/m3 (58) 58.0
 
April 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 15.7 μg/m3 (59) 59.0
 
April 6, 2021, 9 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 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 18.7 μg/m3 (65) 65.0
 
April 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.9 μg/m3 (13) 40.0
 
April 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 13.9 μg/m3 (55) 55.0
 
April 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 15.1 μg/m3 (58) 58.0
 
April 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 14.7 μg/m3 (57) 57.0
 
April 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 13.6 μg/m3 (55) 55.0
 
April 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 19.0 μg/m3 (66) 66.0
 
April 6, 2021, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 17.9 μg/m3 (64) 64.0
 
April 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 16.7 μg/m3 (61) 61.0
 
April 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 14.7 μg/m3 (57) 58.0
 
April 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 11.3 μg/m3 (48) 58.0
 
April 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 13.7 μg/m3 (55) 55.0
 
April 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 14.5 μg/m3 (57) 57.0
 
April 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 11.7 μg/m3 (49) 51.0
 
April 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 12.1 μg/m3 (51) 51.0
 
April 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 13.4 μg/m3 (54) 54.0
 
April 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 10.2 μg/m3 (43) 43.0
 
April 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 12.4 μg/m3 (52) 52.0
 
April 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 16.8 μg/m3 (61) 61.0
 
April 5, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 23.0 μg/m3 (74) 74.0
 
April 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 23.1 μg/m3 (75) 75.0
 
April 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 18.7 μg/m3 (65) 65.0
 
April 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 16.5 μg/m3 (61) 61.0
 
April 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 14.3 μg/m3 (56) 56.0
 
April 5, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 15.6 μg/m3 (59) 59.0
 
April 5, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 18.3 μg/m3 (65) 65.0
 
April 5, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 16.3 μg/m3 (60) 60.0
 
April 5, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 23.2 μg/m3 (75) 75.0
 
April 5, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 21.8 μg/m3 (72) 72.0
 
April 5, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 22.3 μg/m3 (73) 73.0
 
April 5, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 23.7 μg/m3 (76) 76.0
 
April 5, 2021, midnight N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 23.3 μg/m3 (75) 75.0
 
April 4, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 17.1 μg/m3 (62) 68.0
 
April 4, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 15.1 μg/m3 (58) 68.0
 
April 4, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 18.4 μg/m3 (65) 74.0
 
April 4, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 15.7 μg/m3 (59) 71.0
 
April 4, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 18.6 μg/m3 (65) 71.0
 
April 4, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 18.1 μg/m3 (64) 71.0
 
April 4, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 18.4 μg/m3 (65) 65.0
 
April 4, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 20.3 μg/m3 (69) 69.0
 
April 4, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 11.7 μg/m3 (49) 49.0
 
April 4, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 8.9 μg/m3 (38) 39.0
 
April 4, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 9.8 μg/m3 (41) 41.0
 
April 4, 2021, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 9.1 μg/m3 (38) 38.0
 
April 4, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 8.8 μg/m3 (37) 38.0
 
April 4, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 9.5 μg/m3 (40) 40.0
 
April 4, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 7.8 μg/m3 (33) 40.0
 
April 4, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 7.1 μg/m3 (30) 41.0
 
April 4, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 12.8 μg/m3 (53) 53.0
 
April 4, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 16.3 μg/m3 (60) 60.0
 
April 4, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 9.6 μg/m3 (40) 41.0
 
April 4, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.2 μg/m3 (18) 43.0
 
April 4, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 8.1 μg/m3 (34) 44.0
 
April 4, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 6.5 μg/m3 (28) 45.0
 
April 4, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 7.7 μg/m3 (33) 46.0
 
April 4, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 13.7 μg/m3 (55) 55.0
 
April 3, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A N/A 50.0
 
April 3, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 0.3 μg/m3 (2) 50.0
 
April 3, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 6.2 μg/m3 (26) 50.0
 
April 3, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 7.2 μg/m3 (31) 51.0
 
April 3, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 7.8 μg/m3 (33) 50.0