ID: 2918

AQSQID: 381010003

Site Name: Ryder

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

Updated: July 25, 2021, 5:52 a.m.

Location: Ryder (184th St Swest), ND

Reporting: True, Located: True

Current AQI: 86.0

Ryder (184th St Swest) ND, US: 47.940861, -101.571583

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 25, 2021, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A 49.0 μg/m3 (46) 28.5 μg/m3 (86) 86.0
 
July 25, 2021, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A 39.0 μg/m3 (37) 26.2 μg/m3 (81) 81.0
 
July 25, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A 40.0 μg/m3 (38) 28.2 μg/m3 (85) 85.0
 
July 25, 2021, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A 41.0 μg/m3 (38) 30.1 μg/m3 (89) 89.0
 
July 24, 2021, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A 44.0 μg/m3 (41) 30.8 μg/m3 (91) 91.0
 
July 24, 2021, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A 42.0 μg/m3 (39) 31.9 μg/m3 (93) 93.0
 
July 24, 2021, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A 37.0 μg/m3 (35) 27.6 μg/m3 (84) 84.0
 
July 24, 2021, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A 31.0 μg/m3 (29) 20.9 μg/m3 (70) 70.0
 
July 24, 2021, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A 25.0 μg/m3 (24) 17.3 μg/m3 (62) 62.0
 
July 24, 2021, 6 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 20.0 μg/m3 (19) 12.6 μg/m3 (53) 53.0
 
July 24, 2021, 5 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A 14.0 μg/m3 (13) 7.8 μg/m3 (33) 39.0
 
July 24, 2021, 4 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) N/A 17.0 μg/m3 (16) 8.3 μg/m3 (35) 39.0
 
July 24, 2021, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 32.0 μg/m3 (30) 20.1 μg/m3 (68) 68.0
 
July 24, 2021, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 49.0 μg/m3 (46) 30.1 μg/m3 (89) 89.0
 
July 24, 2021, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 25.0 ppb (24) N/A 41.0 μg/m3 (38) 26.0 μg/m3 (81) 81.0
 
July 24, 2021, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) N/A 37.0 μg/m3 (35) 23.6 μg/m3 (76) 76.0
 
July 24, 2021, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A 38.0 μg/m3 (36) 23.8 μg/m3 (76) 76.0
 
July 24, 2021, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (25) N/A 39.0 μg/m3 (37) 23.7 μg/m3 (76) 76.0
 
July 24, 2021, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A 41.0 μg/m3 (38) 25.0 μg/m3 (79) 79.0
 
July 24, 2021, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A 43.0 μg/m3 (40) 25.4 μg/m3 (79) 79.0
 
July 24, 2021, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A 43.0 μg/m3 (40) 24.2 μg/m3 (77) 77.0
 
July 24, 2021, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 40.0 μg/m3 (38) 23.2 μg/m3 (75) 75.0
 
July 24, 2021, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 43.0 μg/m3 (40) 22.2 μg/m3 (73) 73.0
 
July 24, 2021, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 48.0 μg/m3 (45) 21.6 μg/m3 (71) 71.0
 
July 24, 2021, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 42.0 μg/m3 (39) 19.6 μg/m3 (67) 67.0
 
July 24, 2021, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 51.0 ppb (48) N/A 35.0 μg/m3 (33) 17.7 μg/m3 (63) 63.0
 
July 24, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 50.0 ppb (47) N/A 32.0 μg/m3 (30) 14.6 μg/m3 (57) 57.0
 
July 24, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 25.0 μg/m3 (24) 10.2 μg/m3 (43) 47.0
 
July 23, 2021, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 51.0 ppb (48) N/A 23.0 μg/m3 (22) 10.2 μg/m3 (43) 48.0
 
July 23, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 53.0 ppb (50) N/A 27.0 μg/m3 (25) 14.2 μg/m3 (56) 56.0
 
July 23, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 61.0 ppb (71) N/A 34.0 μg/m3 (32) 19.2 μg/m3 (66) 71.0
 
July 23, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 60.0 ppb (68) N/A 33.0 μg/m3 (31) 18.6 μg/m3 (65) 68.0
 
July 23, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 61.0 ppb (71) N/A 28.0 μg/m3 (26) 17.9 μg/m3 (64) 71.0
 
July 23, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (58) N/A 26.0 μg/m3 (25) 17.5 μg/m3 (63) 63.0
 
July 23, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 58.0 ppb (61) N/A 27.0 μg/m3 (25) 18.4 μg/m3 (65) 65.0
 
July 23, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (58) N/A 32.0 μg/m3 (30) 19.1 μg/m3 (66) 66.0
 
July 23, 2021, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (47) N/A 26.0 μg/m3 (25) 16.9 μg/m3 (62) 62.0
 
July 23, 2021, 2 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (40) N/A 25.0 μg/m3 (24) 17.1 μg/m3 (62) 62.0
 
July 23, 2021, 1 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A 29.0 μg/m3 (27) 18.1 μg/m3 (64) 64.0
 
July 23, 2021, noon 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) N/A 31.0 μg/m3 (29) 20.8 μg/m3 (70) 70.0
 
July 23, 2021, 11 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (21) N/A 29.0 μg/m3 (27) 19.9 μg/m3 (68) 68.0
 
July 23, 2021, 10 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (22) N/A 32.0 μg/m3 (30) 21.4 μg/m3 (71) 71.0
 
July 23, 2021, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) N/A 38.0 μg/m3 (36) 23.7 μg/m3 (76) 76.0
 
July 23, 2021, 8 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) N/A 45.0 μg/m3 (42) 27.3 μg/m3 (83) 83.0
 
July 23, 2021, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) N/A 49.0 μg/m3 (46) 33.2 μg/m3 (96) 96.0
 
July 23, 2021, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (39) N/A 56.0 μg/m3 (52) 40.3 μg/m3 (113) 113.0
 
July 23, 2021, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 25.0 μg/m3 (24) 20.4 μg/m3 (69) 69.0
 
July 23, 2021, 4 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 23.0 μg/m3 (22) 19.2 μg/m3 (66) 66.0
 
July 23, 2021, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 24.0 μg/m3 (23) 18.8 μg/m3 (66) 66.0
 
July 23, 2021, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (48) N/A 21.0 μg/m3 (20) 16.4 μg/m3 (61) 61.0
 
July 23, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (50) N/A 22.0 μg/m3 (21) 16.4 μg/m3 (61) 61.0
 
July 23, 2021, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (45) N/A 28.0 μg/m3 (26) 19.8 μg/m3 (68) 68.0
 
July 22, 2021, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (45) N/A 37.0 μg/m3 (35) 20.7 μg/m3 (70) 70.0
 
July 22, 2021, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) N/A 32.0 μg/m3 (30) 20.6 μg/m3 (69) 69.0
 
July 22, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (58) N/A 30.0 μg/m3 (28) 19.5 μg/m3 (67) 67.0
 
July 22, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (50) N/A 31.0 μg/m3 (29) 18.4 μg/m3 (65) 65.0
 
July 22, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) N/A 27.0 μg/m3 (25) 16.8 μg/m3 (61) 61.0
 
July 22, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) N/A 27.0 μg/m3 (25) 15.5 μg/m3 (59) 59.0
 
July 22, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) N/A 27.0 μg/m3 (25) 15.9 μg/m3 (59) 59.0
 
July 22, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) N/A 29.0 μg/m3 (27) 14.3 μg/m3 (56) 56.0
 
July 22, 2021, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A 27.0 μg/m3 (25) 12.5 μg/m3 (52) 52.0
 
July 22, 2021, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A 32.0 μg/m3 (30) 12.8 μg/m3 (53) 53.0
 
July 22, 2021, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A 23.0 μg/m3 (22) 13.3 μg/m3 (54) 54.0
 
July 22, 2021, noon 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 13.0 ppb (13) N/A 21.0 μg/m3 (20) 15.8 μg/m3 (59) 59.0
 
July 22, 2021, 11 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 11.0 ppb (11) N/A 17.0 μg/m3 (16) 14.6 μg/m3 (57) 57.0
 
July 22, 2021, 10 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 10.0 ppb (10) N/A 19.0 μg/m3 (18) 15.5 μg/m3 (59) 59.0
 
July 22, 2021, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (16) N/A 26.0 μg/m3 (25) 16.1 μg/m3 (60) 60.0
 
July 22, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) N/A 30.0 μg/m3 (28) 17.1 μg/m3 (62) 62.0
 
July 22, 2021, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (20) N/A 34.0 μg/m3 (32) 21.5 μg/m3 (71) 71.0
 
July 22, 2021, 6 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (17) N/A 35.0 μg/m3 (33) 23.0 μg/m3 (74) 74.0
 
July 22, 2021, 5 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (20) N/A 38.0 μg/m3 (36) 23.6 μg/m3 (76) 76.0
 
July 22, 2021, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) N/A 35.0 μg/m3 (33) 23.7 μg/m3 (76) 76.0
 
July 22, 2021, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A 35.0 μg/m3 (33) 23.2 μg/m3 (75) 75.0
 
July 22, 2021, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) N/A 39.0 μg/m3 (37) 23.1 μg/m3 (75) 75.0
 
July 22, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A 37.0 μg/m3 (35) 22.4 μg/m3 (73) 73.0
 
July 22, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) N/A 44.0 μg/m3 (41) 24.4 μg/m3 (77) 77.0
 
July 21, 2021, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) N/A 41.0 μg/m3 (38) 25.9 μg/m3 (81) 81.0
 
July 21, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) N/A 44.0 μg/m3 (41) 28.6 μg/m3 (86) 86.0
 
July 21, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) N/A 48.0 μg/m3 (45) 29.4 μg/m3 (88) 88.0
 
July 21, 2021, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) N/A 51.0 μg/m3 (48) 31.9 μg/m3 (93) 93.0
 
July 21, 2021, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (41) N/A 45.0 μg/m3 (42) 30.6 μg/m3 (90) 90.0
 
July 21, 2021, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) N/A 27.0 μg/m3 (25) 16.2 μg/m3 (60) 60.0
 
July 21, 2021, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 22.0 μg/m3 (21) 11.6 μg/m3 (49) 49.0
 
July 21, 2021, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 20.0 μg/m3 (19) 11.0 μg/m3 (46) 46.0
 
July 21, 2021, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A 19.0 μg/m3 (18) 10.1 μg/m3 (43) 43.0
 
July 21, 2021, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) N/A 17.0 μg/m3 (16) 9.9 μg/m3 (42) 42.0
 
July 21, 2021, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A 17.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
July 21, 2021, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A 19.0 μg/m3 (18) 10.9 μg/m3 (46) 46.0
 
July 21, 2021, 11 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) N/A 19.0 μg/m3 (18) 11.6 μg/m3 (49) 49.0
 
July 21, 2021, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A 18.0 μg/m3 (17) 11.4 μg/m3 (48) 48.0
 
July 21, 2021, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) N/A 20.0 μg/m3 (19) 11.5 μg/m3 (48) 48.0
 
July 21, 2021, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A 23.0 μg/m3 (22) 11.5 μg/m3 (48) 48.0
 
July 21, 2021, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A 28.0 μg/m3 (26) 12.1 μg/m3 (51) 51.0
 
July 21, 2021, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A 30.0 μg/m3 (28) 12.1 μg/m3 (51) 51.0
 
July 21, 2021, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A 32.0 μg/m3 (30) 12.5 μg/m3 (52) 52.0
 
July 21, 2021, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) N/A 28.0 μg/m3 (26) 12.6 μg/m3 (53) 53.0
 
July 21, 2021, 3 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A 33.0 μg/m3 (31) 13.7 μg/m3 (55) 55.0
 
July 21, 2021, 2 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A 33.0 μg/m3 (31) 14.3 μg/m3 (56) 56.0
 
July 21, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (48) N/A 34.0 μg/m3 (32) 16.9 μg/m3 (62) 62.0
 
July 21, 2021, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A 33.0 μg/m3 (31) 16.8 μg/m3 (61) 61.0
 
July 20, 2021, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A 34.0 μg/m3 (32) 16.4 μg/m3 (61) 61.0
 
July 20, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) N/A 32.0 μg/m3 (30) 15.5 μg/m3 (59) 59.0
 
July 20, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) N/A 29.0 μg/m3 (27) 15.9 μg/m3 (59) 59.0
 
July 20, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (50) N/A 26.0 μg/m3 (25) 14.2 μg/m3 (56) 56.0
 
July 20, 2021, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (45) N/A 26.0 μg/m3 (25) 12.1 μg/m3 (51) 51.0
 
July 20, 2021, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) N/A 22.0 μg/m3 (21) 11.3 μg/m3 (48) 48.0
 
July 20, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) N/A 24.0 μg/m3 (23) 11.9 μg/m3 (50) 50.0
 
July 20, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) N/A 24.0 μg/m3 (23) 12.3 μg/m3 (52) 52.0
 
July 20, 2021, 3 p.m. 6.0 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 3.0 ppb (5) 36.0 ppb (34) N/A 23.0 μg/m3 (22) 12.1 μg/m3 (51) 51.0
 
July 20, 2021, 2 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 22.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
July 20, 2021, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A 25.0 μg/m3 (24) 12.4 μg/m3 (52) 52.0
 
July 20, 2021, noon 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A 22.0 μg/m3 (21) 12.1 μg/m3 (51) 51.0
 
July 20, 2021, 11 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) N/A 23.0 μg/m3 (22) 13.2 μg/m3 (54) 54.0
 
July 20, 2021, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) N/A 25.0 μg/m3 (24) 14.4 μg/m3 (56) 56.0
 
July 20, 2021, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A 24.0 μg/m3 (23) 14.8 μg/m3 (57) 57.0
 
July 20, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) N/A 28.0 μg/m3 (26) 15.2 μg/m3 (58) 58.0
 
July 20, 2021, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A 27.0 μg/m3 (25) 15.6 μg/m3 (59) 59.0
 
July 20, 2021, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) N/A 29.0 μg/m3 (27) 16.7 μg/m3 (61) 61.0
 
July 20, 2021, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) N/A 30.0 μg/m3 (28) 18.1 μg/m3 (64) 64.0
 
July 20, 2021, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (39) N/A 33.0 μg/m3 (31) 20.7 μg/m3 (70) 70.0
 
July 20, 2021, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) N/A 38.0 μg/m3 (36) 21.5 μg/m3 (71) 71.0
 
July 20, 2021, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) N/A 45.0 μg/m3 (42) 23.6 μg/m3 (76) 76.0
 
July 20, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) N/A 44.0 μg/m3 (41) 25.7 μg/m3 (80) 80.0
 
July 20, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) N/A 42.0 μg/m3 (39) 27.5 μg/m3 (84) 84.0
 
July 19, 2021, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 61.0 ppb (71) N/A 38.0 μg/m3 (36) 26.9 μg/m3 (83) 83.0
 
July 19, 2021, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 66.0 ppb (87) N/A 39.0 μg/m3 (37) 28.8 μg/m3 (87) 87.0
 
July 19, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 67.0 ppb (91) N/A 36.0 μg/m3 (34) 26.5 μg/m3 (82) 91.0
 
July 19, 2021, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 59.0 ppb (65) N/A 32.0 μg/m3 (30) 21.8 μg/m3 (72) 72.0
 
July 19, 2021, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 55.0 ppb (51) N/A 48.0 μg/m3 (45) 20.0 μg/m3 (68) 68.0
 
July 19, 2021, 6 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (48) N/A 24.0 μg/m3 (23) 14.7 μg/m3 (57) 57.0
 
July 19, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (46) N/A 29.0 μg/m3 (27) 13.0 μg/m3 (53) 53.0
 
July 19, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) N/A 24.0 μg/m3 (23) 12.2 μg/m3 (52) 52.0
 
July 19, 2021, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) N/A 26.0 μg/m3 (25) 12.2 μg/m3 (52) 52.0
 
July 19, 2021, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A 19.0 μg/m3 (18) 11.6 μg/m3 (49) 49.0
 
July 19, 2021, 1 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) N/A 26.0 μg/m3 (25) 12.4 μg/m3 (52) 52.0
 
July 19, 2021, noon 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 20.0 μg/m3 (19) 12.3 μg/m3 (52) 52.0
 
July 19, 2021, 11 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 21.0 μg/m3 (20) 14.2 μg/m3 (56) 56.0
 
July 19, 2021, 10 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 23.0 μg/m3 (22) 15.6 μg/m3 (59) 59.0
 
July 19, 2021, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) N/A 24.0 μg/m3 (23) 16.0 μg/m3 (60) 60.0
 
July 19, 2021, 8 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) N/A 26.0 μg/m3 (25) 16.4 μg/m3 (61) 61.0
 
July 19, 2021, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) N/A 28.0 μg/m3 (26) 16.6 μg/m3 (61) 61.0
 
July 19, 2021, 6 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) N/A 26.0 μg/m3 (25) 15.8 μg/m3 (59) 59.0
 
July 19, 2021, 5 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) N/A 25.0 μg/m3 (24) 14.6 μg/m3 (57) 57.0
 
July 19, 2021, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A 22.0 μg/m3 (21) 13.7 μg/m3 (55) 55.0
 
July 19, 2021, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A 28.0 μg/m3 (26) 14.6 μg/m3 (57) 57.0
 
July 19, 2021, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) N/A 27.0 μg/m3 (25) 16.3 μg/m3 (60) 60.0
 
July 19, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) N/A 27.0 μg/m3 (25) 16.1 μg/m3 (60) 60.0
 
July 19, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 53.0 ppb (50) N/A 27.0 μg/m3 (25) 16.1 μg/m3 (60) 60.0
 
July 18, 2021, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 59.0 ppb (65) N/A 24.0 μg/m3 (23) 15.6 μg/m3 (59) 65.0
 
July 18, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 61.0 ppb (71) N/A 22.0 μg/m3 (21) 15.5 μg/m3 (59) 71.0
 
July 18, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 64.0 ppb (81) N/A 21.0 μg/m3 (20) 15.0 μg/m3 (58) 81.0
 
July 18, 2021, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 60.0 ppb (68) N/A 22.0 μg/m3 (21) 13.7 μg/m3 (55) 68.0
 
July 18, 2021, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 58.0 ppb (61) N/A 22.0 μg/m3 (21) 13.1 μg/m3 (54) 61.0
 
July 18, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (50) N/A 20.0 μg/m3 (19) 12.5 μg/m3 (52) 52.0
 
July 18, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) N/A 20.0 μg/m3 (19) 11.8 μg/m3 (50) 50.0
 
July 18, 2021, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) N/A 19.0 μg/m3 (18) 11.9 μg/m3 (50) 50.0
 
July 18, 2021, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) N/A 21.0 μg/m3 (20) 12.6 μg/m3 (53) 53.0
 
July 18, 2021, 2 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) N/A 21.0 μg/m3 (20) 14.0 μg/m3 (55) 55.0
 
July 18, 2021, 1 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) N/A 22.0 μg/m3 (21) 16.1 μg/m3 (60) 60.0
 
July 18, 2021, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A 24.0 μg/m3 (23) 17.3 μg/m3 (62) 62.0
 
July 18, 2021, 11 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A 25.0 μg/m3 (24) 17.2 μg/m3 (62) 62.0
 
July 18, 2021, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A 24.0 μg/m3 (23) 16.5 μg/m3 (61) 61.0
 
July 18, 2021, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A 24.0 μg/m3 (23) 16.1 μg/m3 (60) 60.0
 
July 18, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) N/A 23.0 μg/m3 (22) 15.4 μg/m3 (58) 58.0
 
July 18, 2021, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A 22.0 μg/m3 (21) 15.6 μg/m3 (59) 59.0
 
July 18, 2021, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) N/A 23.0 μg/m3 (22) 15.8 μg/m3 (59) 59.0
 
July 18, 2021, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A 23.0 μg/m3 (22) 15.8 μg/m3 (59) 59.0
 
July 18, 2021, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A 23.0 μg/m3 (22) 15.4 μg/m3 (58) 58.0