ID: 7876

AQSQID: 840180890034

Site Name: East Chicago - Marina

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

Updated: Feb. 26, 2021, 10:31 a.m.

Location: E Chicago (Indiana Harbor), IN

Reporting: True, Located: True

Current AQI: 63.0

E Chicago (Indiana Harbor) IN, US: 41.653446, -87.435435

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 26, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 17.5 μg/m3 (63) 63.0
 
Feb. 26, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 16.4 μg/m3 (61) 61.0
 
Feb. 26, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 16.5 μg/m3 (61) 61.0
 
Feb. 26, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 15.5 μg/m3 (59) 59.0
 
Feb. 26, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 15.2 μg/m3 (58) 58.0
 
Feb. 26, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 26, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 26, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.2 μg/m3 (56) 56.0
 
Feb. 26, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 13.1 μg/m3 (54) 54.0
 
Feb. 26, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 13.7 μg/m3 (55) 55.0
 
Feb. 25, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 11.8 μg/m3 (50) 50.0
 
Feb. 25, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 10.6 μg/m3 (45) 45.0
 
Feb. 25, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 10.5 μg/m3 (44) 44.0
 
Feb. 25, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 10.1 μg/m3 (43) 43.0
 
Feb. 25, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 12.4 μg/m3 (52) 52.0
 
Feb. 25, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 10.9 μg/m3 (46) 46.0
 
Feb. 25, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 10.5 μg/m3 (44) 44.0
 
Feb. 25, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.6 μg/m3 (57) 57.0
 
Feb. 25, 2021, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 21.7 μg/m3 (72) 72.0
 
Feb. 25, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 24.9 μg/m3 (78) 78.0
 
Feb. 25, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 24.6 μg/m3 (78) 78.0
 
Feb. 25, 2021, noon N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 18.6 μg/m3 (65) 65.0
 
Feb. 25, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 16.4 μg/m3 (61) 61.0
 
Feb. 25, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 14.1 μg/m3 (56) 56.0
 
Feb. 25, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 14.4 μg/m3 (56) 56.0
 
Feb. 25, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 25, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 12.3 μg/m3 (52) 52.0
 
Feb. 25, 2021, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 12.1 μg/m3 (51) 51.0
 
Feb. 25, 2021, 5 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 25, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 8.9 μg/m3 (38) 38.0
 
Feb. 25, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Feb. 25, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 3.8 μg/m3 (16) 16.0
 
Feb. 25, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Feb. 25, 2021, midnight N/A N/A N/A N/A N/A 10.0 ppb (15) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 24, 2021, 11 p.m. N/A N/A N/A N/A N/A 5.0 ppb (8) N/A N/A N/A 9.1 μg/m3 (38) 38.0
 
Feb. 24, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 24, 2021, 9 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) N/A N/A N/A 14.7 μg/m3 (57) 57.0
 
Feb. 24, 2021, 8 p.m. N/A N/A N/A N/A N/A 8.0 ppb (12) N/A N/A N/A 16.7 μg/m3 (61) 61.0
 
Feb. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A 16.9 μg/m3 (62) 62.0
 
Feb. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) N/A N/A N/A 15.3 μg/m3 (58) 58.0
 
Feb. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 15.3 μg/m3 (58) 58.0
 
Feb. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.1 μg/m3 (56) 56.0
 
Feb. 24, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 11.1 μg/m3 (47) 47.0
 
Feb. 24, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 24, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 10.2 μg/m3 (43) 43.0
 
Feb. 24, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 7.2 μg/m3 (31) 31.0
 
Feb. 24, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 6.7 μg/m3 (28) 28.0
 
Feb. 24, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 5.8 μg/m3 (25) 25.0
 
Feb. 24, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Feb. 24, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 4.6 μg/m3 (20) 20.0
 
Feb. 24, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 4.4 μg/m3 (19) 19.0
 
Feb. 24, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
Feb. 24, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 4.9 μg/m3 (21) 21.0
 
Feb. 24, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
Feb. 24, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 10.4 μg/m3 (44) 44.0
 
Feb. 24, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 10.7 μg/m3 (45) 45.0
 
Feb. 24, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.5 μg/m3 (36) 36.0
 
Feb. 24, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 7.6 μg/m3 (32) 32.0
 
Feb. 23, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.5 μg/m3 (36) 36.0
 
Feb. 23, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.8 μg/m3 (37) 37.0
 
Feb. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 7.3 μg/m3 (31) 31.0
 
Feb. 23, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 6.3 μg/m3 (27) 27.0
 
Feb. 23, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A N/A 2.0
 
Feb. 23, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 7.8 μg/m3 (33) 33.0
 
Feb. 23, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 7.5 μg/m3 (32) 32.0
 
Feb. 23, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 9.1 μg/m3 (38) 38.0
 
Feb. 23, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.9 μg/m3 (38) 38.0
 
Feb. 23, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 7.5 μg/m3 (32) 32.0
 
Feb. 23, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 23, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.6 μg/m3 (36) 36.0
 
Feb. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
Feb. 23, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.4 μg/m3 (36) 36.0
 
Feb. 23, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 7.4 μg/m3 (31) 31.0
 
Feb. 23, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
Feb. 23, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 4.9 μg/m3 (21) 21.0
 
Feb. 23, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
Feb. 23, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 4.9 μg/m3 (21) 21.0
 
Feb. 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (31) 31.0
 
Feb. 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.8 μg/m3 (41) 41.0
 
Feb. 23, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 13.2 μg/m3 (54) 54.0
 
Feb. 23, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 16.7 μg/m3 (61) 61.0
 
Feb. 22, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 17.8 μg/m3 (63) 63.0
 
Feb. 22, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 17.7 μg/m3 (63) 63.0
 
Feb. 22, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 20.9 μg/m3 (70) 70.0
 
Feb. 22, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 18.1 μg/m3 (64) 64.0
 
Feb. 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 21.1 μg/m3 (70) 70.0
 
Feb. 22, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 26.0 μg/m3 (81) 81.0
 
Feb. 22, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 25.2 μg/m3 (79) 79.0
 
Feb. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 25.5 μg/m3 (80) 80.0
 
Feb. 22, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 27.6 μg/m3 (84) 84.0
 
Feb. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 28.6 μg/m3 (86) 86.0
 
Feb. 22, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 30.3 μg/m3 (90) 90.0
 
Feb. 22, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 27.3 μg/m3 (83) 83.0
 
Feb. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 25.0 μg/m3 (79) 79.0
 
Feb. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 23.0 μg/m3 (74) 74.0
 
Feb. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 18.1 μg/m3 (64) 64.0
 
Feb. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.8 μg/m3 (57) 57.0
 
Feb. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 10.5 μg/m3 (44) 44.0
 
Feb. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 5.9 μg/m3 (25) 25.0
 
Feb. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 6.9 μg/m3 (29) 29.0
 
Feb. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 6.5 μg/m3 (28) 28.0
 
Feb. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.2 μg/m3 (35) 35.0
 
Feb. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 11.4 μg/m3 (48) 48.0
 
Feb. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.6 μg/m3 (57) 57.0
 
Feb. 22, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 13.5 μg/m3 (54) 54.0
 
Feb. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.7 μg/m3 (57) 57.0
 
Feb. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 14.5 μg/m3 (57) 57.0
 
Feb. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 14.9 μg/m3 (57) 57.0
 
Feb. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 15.4 μg/m3 (58) 58.0
 
Feb. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 17.1 μg/m3 (62) 62.0
 
Feb. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 18.3 μg/m3 (65) 65.0
 
Feb. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 19.8 μg/m3 (68) 68.0
 
Feb. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 20.6 μg/m3 (69) 69.0
 
Feb. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 20.9 μg/m3 (70) 70.0
 
Feb. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 22.3 μg/m3 (73) 73.0
 
Feb. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 25.3 μg/m3 (79) 79.0
 
Feb. 21, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 26.4 μg/m3 (82) 82.0
 
Feb. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 30.2 μg/m3 (90) 90.0
 
Feb. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 34.3 μg/m3 (98) 98.0
 
Feb. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 34.0 μg/m3 (98) 98.0
 
Feb. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 33.2 μg/m3 (96) 96.0
 
Feb. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 32.3 μg/m3 (94) 94.0
 
Feb. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 33.1 μg/m3 (96) 96.0
 
Feb. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 33.7 μg/m3 (97) 97.0
 
Feb. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 34.8 μg/m3 (99) 99.0
 
Feb. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 33.4 μg/m3 (96) 96.0
 
Feb. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 34.6 μg/m3 (99) 99.0
 
Feb. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 36.5 μg/m3 (104) 104.0
 
Feb. 21, 2021, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 28.3 μg/m3 (86) 86.0
 
Feb. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 25.6 μg/m3 (80) 80.0
 
Feb. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 23.7 μg/m3 (76) 76.0
 
Feb. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 24.3 μg/m3 (77) 77.0
 
Feb. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 25.4 μg/m3 (79) 79.0
 
Feb. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 27.5 μg/m3 (84) 84.0
 
Feb. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 25.8 μg/m3 (80) 80.0
 
Feb. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 26.6 μg/m3 (82) 82.0
 
Feb. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 32.0 μg/m3 (93) 93.0
 
Feb. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) N/A N/A N/A 43.8 μg/m3 (122) 122.0
 
Feb. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) N/A N/A N/A 47.9 μg/m3 (132) 132.0
 
Feb. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 47.5 μg/m3 (131) 131.0
 
Feb. 20, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 45.8 μg/m3 (127) 127.0
 
Feb. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 46.5 μg/m3 (129) 129.0
 
Feb. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 46.8 μg/m3 (129) 129.0
 
Feb. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 47.8 μg/m3 (132) 132.0
 
Feb. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 48.1 μg/m3 (133) 133.0
 
Feb. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 49.3 μg/m3 (135) 135.0
 
Feb. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 48.1 μg/m3 (133) 133.0
 
Feb. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 43.0 μg/m3 (120) 120.0
 
Feb. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 42.5 μg/m3 (119) 119.0
 
Feb. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 40.8 μg/m3 (115) 115.0
 
Feb. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 37.0 μg/m3 (105) 105.0
 
Feb. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 37.3 μg/m3 (106) 106.0
 
Feb. 20, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 37.5 μg/m3 (106) 106.0
 
Feb. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 33.4 μg/m3 (96) 96.0
 
Feb. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 31.8 μg/m3 (93) 93.0
 
Feb. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 29.3 μg/m3 (88) 88.0
 
Feb. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 32.1 μg/m3 (94) 94.0
 
Feb. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 32.9 μg/m3 (95) 95.0
 
Feb. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 31.1 μg/m3 (91) 91.0
 
Feb. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 33.0 μg/m3 (95) 95.0
 
Feb. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 40.9 μg/m3 (115) 115.0
 
Feb. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 44.4 μg/m3 (123) 123.0
 
Feb. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 48.4 μg/m3 (133) 133.0
 
Feb. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 44.4 μg/m3 (123) 123.0
 
Feb. 19, 2021, noon N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 36.3 μg/m3 (103) 103.0
 
Feb. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 30.7 μg/m3 (91) 91.0
 
Feb. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 29.4 μg/m3 (88) 88.0
 
Feb. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A 32.4 μg/m3 (94) 94.0