ID: 908

AQSQID: 550250041

Site Name: Madison East

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

Updated: July 28, 2021, 6:56 p.m.

Location: Madison (Emerson E), WI

Reporting: True, Located: True

Current AQI: 53.0

Madison (Emerson E) WI, US: 43.1008, -89.3572

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 28, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 12.8 μg/m3 (53) 53.0
 
July 28, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 11.9 μg/m3 (50) 50.0
 
July 28, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 11.2 μg/m3 (47) 47.0
 
July 28, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 10.4 μg/m3 (44) 44.0
 
July 28, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 9.4 μg/m3 (40) 42.0
 
July 28, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 9.2 μg/m3 (39) 39.0
 
July 28, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 14.3 μg/m3 (56) 56.0
 
July 28, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 15.2 μg/m3 (58) 58.0
 
July 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 15.2 μg/m3 (58) 58.0
 
July 28, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 15.3 μg/m3 (58) 58.0
 
July 28, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 17.0 μg/m3 (62) 62.0
 
July 28, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 16.9 μg/m3 (62) 62.0
 
July 28, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 16.6 μg/m3 (61) 61.0
 
July 28, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 16.4 μg/m3 (61) 61.0
 
July 28, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 15.5 μg/m3 (59) 59.0
 
July 28, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 14.9 μg/m3 (57) 57.0
 
July 28, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (49) N/A N/A 15.0 μg/m3 (58) 58.0
 
July 27, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 14.2 μg/m3 (56) 56.0
 
July 27, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 14.1 μg/m3 (56) 56.0
 
July 27, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 14.1 μg/m3 (56) 56.0
 
July 27, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 14.2 μg/m3 (56) 56.0
 
July 27, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 14.3 μg/m3 (56) 56.0
 
July 27, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 13.6 μg/m3 (55) 55.0
 
July 27, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 56.0 ppb (55) N/A N/A 9.4 μg/m3 (40) 55.0
 
July 27, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 9.5 μg/m3 (40) 45.0
 
July 27, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 10.1 μg/m3 (43) 43.0
 
July 27, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 9.8 μg/m3 (41) 41.0
 
July 27, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 9.2 μg/m3 (39) 43.0
 
July 27, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 10.3 μg/m3 (43) 44.0
 
July 27, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 17.9 μg/m3 (64) 64.0
 
July 27, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 19.9 μg/m3 (68) 68.0
 
July 27, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 19.9 μg/m3 (68) 68.0
 
July 27, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 19.9 μg/m3 (68) 68.0
 
July 27, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 46.0 ppb (43) N/A N/A 20.5 μg/m3 (69) 69.0
 
July 27, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 20.4 μg/m3 (69) 69.0
 
July 27, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 20.2 μg/m3 (69) 69.0
 
July 27, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 21.5 μg/m3 (71) 71.0
 
July 27, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 23.9 μg/m3 (76) 76.0
 
July 27, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 26.5 μg/m3 (82) 82.0
 
July 27, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 26.9 μg/m3 (83) 83.0
 
July 27, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 61.0 ppb (71) N/A N/A 25.8 μg/m3 (80) 80.0
 
July 26, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 64.0 ppb (81) N/A N/A 27.1 μg/m3 (83) 83.0
 
July 26, 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 26.6 μg/m3 (82) 82.0
 
July 26, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 62.0 ppb (74) N/A N/A 26.2 μg/m3 (81) 81.0
 
July 26, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 62.0 ppb (74) N/A N/A 26.2 μg/m3 (81) 81.0
 
July 26, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 25.6 μg/m3 (80) 80.0
 
July 26, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 24.0 μg/m3 (77) 77.0
 
July 26, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 23.3 μg/m3 (75) 75.0
 
July 26, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 21.7 μg/m3 (72) 72.0
 
July 26, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 18.9 μg/m3 (66) 66.0
 
July 26, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 16.8 μg/m3 (61) 61.0
 
July 26, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 14.4 μg/m3 (56) 56.0
 
July 26, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 13.6 μg/m3 (55) 55.0
 
July 26, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 12.2 μg/m3 (52) 52.0
 
July 26, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 11.7 μg/m3 (49) 49.0
 
July 26, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 26, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 11.7 μg/m3 (49) 49.0
 
July 26, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 11.9 μg/m3 (50) 50.0
 
July 26, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 12.2 μg/m3 (52) 52.0
 
July 26, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 11.8 μg/m3 (50) 50.0
 
July 26, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 10.8 μg/m3 (46) 46.0
 
July 26, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 10.9 μg/m3 (46) 46.0
 
July 26, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 11.3 μg/m3 (48) 48.0
 
July 26, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 12.3 μg/m3 (52) 52.0
 
July 26, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 12.9 μg/m3 (53) 53.0
 
July 25, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 12.2 μg/m3 (52) 52.0
 
July 25, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 11.8 μg/m3 (50) 50.0
 
July 25, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 25, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 18.9 μg/m3 (66) 66.0
 
July 25, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 57.0 ppb (58) N/A N/A 23.8 μg/m3 (76) 76.0
 
July 25, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 62.0 ppb (74) N/A N/A 26.8 μg/m3 (82) 82.0
 
July 25, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 64.0 ppb (81) N/A N/A 26.1 μg/m3 (81) 81.0
 
July 25, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 57.0 ppb (58) N/A N/A 25.3 μg/m3 (79) 79.0
 
July 25, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 24.0 μg/m3 (77) 77.0
 
July 25, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 21.5 μg/m3 (71) 71.0
 
July 25, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 17.4 μg/m3 (63) 63.0
 
July 25, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 16.1 μg/m3 (60) 60.0
 
July 25, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 17.0 μg/m3 (62) 62.0
 
July 25, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 16.7 μg/m3 (61) 61.0
 
July 25, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 16.5 μg/m3 (61) 61.0
 
July 25, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 15.0 μg/m3 (58) 58.0
 
July 25, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 14.3 μg/m3 (56) 56.0
 
July 25, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 13.2 μg/m3 (54) 54.0
 
July 25, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 12.2 μg/m3 (52) 52.0
 
July 25, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 11.5 μg/m3 (48) 48.0
 
July 25, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 10.3 μg/m3 (43) 44.0
 
July 25, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 10.7 μg/m3 (45) 48.0
 
July 25, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 9.4 μg/m3 (40) 51.0
 
July 25, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 7.9 μg/m3 (33) 51.0
 
July 24, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 57.0 ppb (58) N/A N/A 7.9 μg/m3 (33) 58.0
 
July 24, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 56.0 ppb (55) N/A N/A 8.2 μg/m3 (35) 55.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 57.0 ppb (58) N/A N/A 8.2 μg/m3 (35) 58.0
 
July 24, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 10.6 μg/m3 (45) 50.0
 
July 24, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 11.0 μg/m3 (46) 50.0
 
July 24, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 11.5 μg/m3 (48) 50.0
 
July 24, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 15.2 μg/m3 (58) 58.0
 
July 24, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 17.1 μg/m3 (62) 62.0
 
July 24, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 18.3 μg/m3 (65) 65.0
 
July 24, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 19.9 μg/m3 (68) 68.0
 
July 24, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 21.4 μg/m3 (71) 71.0
 
July 24, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 22.7 μg/m3 (74) 74.0
 
July 24, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 23.6 μg/m3 (76) 76.0
 
July 24, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 25.5 μg/m3 (80) 80.0
 
July 24, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 26.9 μg/m3 (83) 83.0
 
July 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 27.5 μg/m3 (84) 84.0
 
July 24, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 28.6 μg/m3 (86) 86.0
 
July 24, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 28.8 μg/m3 (87) 87.0
 
July 24, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 28.0 μg/m3 (85) 85.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 27.5 μg/m3 (84) 84.0
 
July 24, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 25.9 μg/m3 (81) 81.0
 
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 23.1 μg/m3 (75) 75.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 22.4 μg/m3 (73) 73.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 22.4 μg/m3 (73) 73.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 22.4 μg/m3 (73) 73.0
 
July 23, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (50) N/A N/A 22.2 μg/m3 (73) 73.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 57.0 ppb (58) N/A N/A 22.3 μg/m3 (73) 73.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (65) N/A N/A 22.5 μg/m3 (73) 73.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 60.0 ppb (68) N/A N/A 24.0 μg/m3 (77) 77.0
 
July 23, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 58.0 ppb (61) N/A N/A 24.2 μg/m3 (77) 77.0
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 58.0 ppb (61) N/A N/A 24.6 μg/m3 (78) 78.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 26.4 μg/m3 (82) 82.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 27.4 μg/m3 (84) 84.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 28.6 μg/m3 (86) 86.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 28.9 μg/m3 (87) 87.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 28.6 μg/m3 (86) 86.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 28.1 μg/m3 (85) 85.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 26.8 μg/m3 (82) 82.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 25.8 μg/m3 (80) 80.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 23.9 μg/m3 (76) 76.0
 
July 23, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 23.1 μg/m3 (75) 75.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 23.0 μg/m3 (74) 74.0
 
July 23, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 22.2 μg/m3 (73) 73.0
 
July 23, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 21.8 μg/m3 (72) 72.0
 
July 23, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 21.9 μg/m3 (72) 72.0
 
July 23, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 22.3 μg/m3 (73) 73.0
 
July 23, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 23.2 μg/m3 (75) 75.0
 
July 23, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 24.2 μg/m3 (77) 77.0
 
July 22, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 61.0 ppb (71) N/A N/A 24.8 μg/m3 (78) 78.0
 
July 22, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 60.0 ppb (68) N/A N/A 23.0 μg/m3 (74) 74.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 19.8 μg/m3 (68) 68.0
 
July 22, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (49) N/A N/A 19.6 μg/m3 (67) 67.0
 
July 22, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 19.6 μg/m3 (67) 67.0
 
July 22, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 20.5 μg/m3 (69) 69.0
 
July 22, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 22.2 μg/m3 (73) 73.0
 
July 22, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 23.0 μg/m3 (74) 74.0
 
July 22, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 21.7 μg/m3 (72) 72.0
 
July 22, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 17.9 μg/m3 (64) 64.0
 
July 22, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 17.9 μg/m3 (64) 64.0
 
July 22, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 15.8 μg/m3 (59) 59.0
 
July 22, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 13.9 μg/m3 (55) 55.0
 
July 22, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 11.5 μg/m3 (48) 48.0
 
July 22, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 10.6 μg/m3 (45) 45.0
 
July 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 10.9 μg/m3 (46) 46.0
 
July 22, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 11.6 μg/m3 (49) 49.0
 
July 22, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 12.9 μg/m3 (53) 53.0
 
July 22, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 14.0 μg/m3 (55) 55.0
 
July 22, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 16.5 μg/m3 (61) 61.0
 
July 22, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 16.8 μg/m3 (61) 61.0
 
July 22, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 18.4 μg/m3 (65) 65.0
 
July 22, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 18.7 μg/m3 (65) 65.0
 
July 22, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 19.9 μg/m3 (68) 68.0
 
July 21, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 20.1 μg/m3 (68) 68.0
 
July 21, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 20.5 μg/m3 (69) 69.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A N/A 38.0
 
July 21, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A N/A 37.0
 
July 21, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 13.8 μg/m3 (55) 55.0
 
July 21, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 12.8 μg/m3 (53) 53.0