ID: 2783

AQSQID: 060710026

Site Name: Ontario Near Road

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

Updated: March 8, 2021, 9:32 a.m.

Location: Ontario (Fontana Gateway), CA

Reporting: True, Located: True

Current AQI: 16.0

Ontario (Fontana Gateway) CA, US: 34.068114, -117.525796

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 8, 2021, 8 a.m. 16.9 ppb (16) 2.4 ppb (3) N/A 14.0 ppb (14) N/A N/A N/A 0.27 ppb (4) N/A N/A 16.0
 
March 8, 2021, 7 a.m. 13.0 ppb (13) 0.5 ppb (1) N/A 13.0 ppb (13) N/A N/A N/A 0.25 ppb (3) N/A N/A 13.0
 
March 8, 2021, 6 a.m. 18.1 ppb (18) 2.8 ppb (3) N/A 15.0 ppb (15) N/A N/A N/A 0.27 ppb (4) N/A N/A 18.0
 
March 8, 2021, 5 a.m. 23.2 ppb (22) 5.1 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.31 ppb (4) N/A N/A 22.0
 
March 8, 2021, 4 a.m. 25.5 ppb (25) 6.8 ppb (7) N/A 19.0 ppb (18) N/A N/A N/A 0.37 ppb (5) N/A N/A 25.0
 
March 8, 2021, 3 a.m. 22.5 ppb (22) 6.3 ppb (6) N/A 16.0 ppb (16) N/A N/A N/A 0.38 ppb (5) N/A N/A 22.0
 
March 8, 2021, 2 a.m. 21.8 ppb (21) 5.2 ppb (5) N/A 17.0 ppb (17) N/A N/A N/A 0.36 ppb (5) N/A N/A 21.0
 
March 8, 2021, 1 a.m. 24.1 ppb (23) 6.5 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A 0.39 ppb (5) N/A N/A 23.0
 
March 8, 2021, midnight 19.3 ppb (19) 4.3 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.36 ppb (5) N/A N/A 19.0
 
March 7, 2021, 11 p.m. 15.8 ppb (15) 3.3 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.34 ppb (4) N/A N/A 15.0
 
March 7, 2021, 10 p.m. 18.0 ppb (17) 5.3 ppb (5) N/A 13.0 ppb (13) N/A N/A N/A 0.33 ppb (4) N/A N/A 17.0
 
March 7, 2021, 9 p.m. 21.7 ppb (21) 6.8 ppb (7) N/A 15.0 ppb (15) N/A N/A N/A 0.34 ppb (4) N/A N/A 21.0
 
March 7, 2021, 8 p.m. 17.2 ppb (17) 5.5 ppb (6) N/A 12.0 ppb (12) N/A N/A N/A 0.34 ppb (4) N/A N/A 17.0
 
March 7, 2021, 7 p.m. 16.8 ppb (16) 5.6 ppb (6) N/A 11.0 ppb (11) N/A N/A N/A 0.28 ppb (4) N/A N/A 16.0
 
March 7, 2021, 6 p.m. 17.6 ppb (17) 5.8 ppb (6) N/A 12.0 ppb (12) N/A N/A N/A 0.28 ppb (4) N/A N/A 17.0
 
March 7, 2021, 5 p.m. 22.8 ppb (22) 7.9 ppb (8) N/A 15.0 ppb (15) N/A N/A N/A 0.34 ppb (4) N/A N/A 22.0
 
March 7, 2021, 4 p.m. 23.6 ppb (23) 7.7 ppb (8) N/A 16.0 ppb (16) N/A N/A N/A 0.33 ppb (4) N/A N/A 23.0
 
March 7, 2021, 3 p.m. 27.3 ppb (26) 10.0 ppb (10) N/A 17.0 ppb (17) N/A N/A N/A 0.34 ppb (4) N/A N/A 26.0
 
March 7, 2021, 2 p.m. 37.6 ppb (36) 13.4 ppb (13) N/A 24.0 ppb (23) N/A N/A N/A 0.43 ppb (5) N/A N/A 36.0
 
March 7, 2021, 1 p.m. 29.9 ppb (29) 8.3 ppb (8) N/A 22.0 ppb (21) N/A N/A N/A 0.31 ppb (4) N/A N/A 29.0
 
March 7, 2021, noon 21.8 ppb (21) 5.9 ppb (6) N/A 16.0 ppb (16) N/A N/A N/A 0.29 ppb (4) N/A N/A 21.0
 
March 7, 2021, 11 a.m. 15.4 ppb (15) 4.1 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.23 ppb (3) N/A N/A 15.0
 
March 7, 2021, 10 a.m. 27.0 ppb (26) 4.9 ppb (5) N/A 22.0 ppb (21) N/A N/A N/A 0.31 ppb (4) N/A N/A 26.0
 
March 7, 2021, 9 a.m. 26.1 ppb (25) 2.0 ppb (2) N/A 24.0 ppb (23) N/A N/A N/A 0.3 ppb (4) N/A N/A 25.0
 
March 7, 2021, 8 a.m. 15.7 ppb (15) 1.1 ppb (2) N/A 15.0 ppb (15) N/A N/A N/A 0.32 ppb (4) N/A N/A 15.0
 
March 7, 2021, 7 a.m. 9.7 ppb (10) -0.5 ppb (0) N/A 10.0 ppb (10) N/A N/A N/A 0.28 ppb (4) N/A N/A 10.0
 
March 7, 2021, 6 a.m. 11.7 ppb (12) 0.2 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A 0.27 ppb (4) N/A N/A 12.0
 
March 7, 2021, 5 a.m. 22.1 ppb (21) 4.4 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.36 ppb (5) N/A N/A 21.0
 
March 7, 2021, 4 a.m. 22.0 ppb (21) 5.7 ppb (6) N/A 16.0 ppb (16) N/A N/A N/A 0.37 ppb (5) N/A N/A 21.0
 
March 7, 2021, 3 a.m. 23.5 ppb (23) 6.5 ppb (7) N/A 17.0 ppb (17) N/A N/A N/A 0.35 ppb (4) N/A N/A 23.0
 
March 7, 2021, 2 a.m. 30.9 ppb (30) 10.3 ppb (10) N/A 21.0 ppb (20) N/A N/A N/A 0.4 ppb (5) N/A N/A 30.0
 
March 7, 2021, 1 a.m. 33.1 ppb (32) 11.8 ppb (12) N/A 21.0 ppb (20) N/A N/A N/A 0.42 ppb (5) N/A N/A 32.0
 
March 7, 2021, midnight 25.2 ppb (24) 8.9 ppb (9) N/A 16.0 ppb (16) N/A N/A N/A 0.38 ppb (5) N/A N/A 24.0
 
March 6, 2021, 11 p.m. 20.4 ppb (20) 6.8 ppb (7) N/A 14.0 ppb (14) N/A N/A N/A 0.32 ppb (4) N/A N/A 20.0
 
March 6, 2021, 10 p.m. 21.3 ppb (21) 7.1 ppb (7) N/A 14.0 ppb (14) N/A N/A N/A 0.29 ppb (4) N/A N/A 21.0
 
March 6, 2021, 9 p.m. 14.8 ppb (14) 4.4 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.26 ppb (4) N/A N/A 14.0
 
March 6, 2021, 8 p.m. 15.1 ppb (15) 4.4 ppb (5) N/A 11.0 ppb (11) N/A N/A N/A 0.23 ppb (3) N/A N/A 15.0
 
March 6, 2021, 7 p.m. 21.3 ppb (21) 6.6 ppb (7) N/A 15.0 ppb (15) N/A N/A N/A 0.27 ppb (4) N/A N/A 21.0
 
March 6, 2021, 6 p.m. 28.4 ppb (27) 10.0 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A 0.34 ppb (4) N/A N/A 27.0
 
March 6, 2021, 5 p.m. 55.7 ppb (53) 25.4 ppb (24) N/A 30.0 ppb (29) N/A N/A N/A 0.49 ppb (6) N/A N/A 53.0
 
March 6, 2021, 4 p.m. 89.3 ppb (89) 49.7 ppb (47) N/A 40.0 ppb (38) N/A N/A N/A 0.61 ppb (7) N/A N/A 89.0
 
March 6, 2021, 3 p.m. 77.1 ppb (76) 38.0 ppb (36) N/A 39.0 ppb (37) N/A N/A N/A 0.59 ppb (7) N/A N/A 76.0
 
March 6, 2021, 2 p.m. 74.3 ppb (73) 33.7 ppb (32) N/A 41.0 ppb (39) N/A N/A N/A 0.56 ppb (7) N/A N/A 73.0
 
March 6, 2021, 1 p.m. 70.8 ppb (69) 31.8 ppb (30) N/A 39.0 ppb (37) N/A N/A N/A 0.58 ppb (7) N/A N/A 69.0
 
March 6, 2021, noon 80.2 ppb (79) 35.7 ppb (34) N/A 45.0 ppb (43) N/A N/A N/A 0.57 ppb (7) N/A N/A 79.0
 
March 6, 2021, 11 a.m. 32.0 ppb (31) 1.1 ppb (2) N/A 31.0 ppb (30) N/A N/A N/A 0.43 ppb (5) N/A N/A 31.0
 
March 6, 2021, 10 a.m. 100.6 ppb (101) 53.9 ppb (51) N/A 47.0 ppb (45) N/A N/A N/A 0.7 ppb (8) N/A N/A 101.0
 
March 6, 2021, 9 a.m. 52.5 ppb (50) 14.4 ppb (14) N/A 38.0 ppb (36) N/A N/A N/A 0.52 ppb (6) N/A N/A 50.0
 
March 6, 2021, 8 a.m. 61.2 ppb (59) 18.8 ppb (18) N/A 43.0 ppb (41) N/A N/A N/A 0.62 ppb (7) N/A N/A 59.0
 
March 6, 2021, 7 a.m. 55.0 ppb (53) 10.7 ppb (11) N/A 44.0 ppb (42) N/A N/A N/A 0.6 ppb (7) N/A N/A 53.0
 
March 6, 2021, 6 a.m. 68.2 ppb (67) 17.3 ppb (17) N/A 51.0 ppb (49) N/A N/A N/A 0.51 ppb (6) N/A N/A 67.0
 
March 6, 2021, 5 a.m. 78.8 ppb (78) 24.7 ppb (24) N/A 54.0 ppb (51) N/A N/A N/A 0.56 ppb (7) N/A N/A 78.0
 
March 6, 2021, 4 a.m. 66.0 ppb (64) 18.3 ppb (18) N/A 48.0 ppb (46) N/A N/A N/A 0.52 ppb (6) N/A N/A 64.0
 
March 6, 2021, 3 a.m. 62.4 ppb (60) 19.2 ppb (19) N/A 43.0 ppb (41) N/A N/A N/A 0.5 ppb (6) N/A N/A 60.0
 
March 6, 2021, 2 a.m. 58.3 ppb (56) 13.7 ppb (13) N/A 45.0 ppb (43) N/A N/A N/A 0.48 ppb (6) N/A N/A 56.0
 
March 6, 2021, 1 a.m. 55.0 ppb (53) 13.5 ppb (13) N/A 42.0 ppb (40) N/A N/A N/A 0.5 ppb (6) N/A N/A 53.0
 
March 6, 2021, midnight 50.1 ppb (48) 15.8 ppb (15) N/A 34.0 ppb (33) N/A N/A N/A 0.41 ppb (5) N/A N/A 48.0
 
March 5, 2021, 11 p.m. 40.1 ppb (38) 11.8 ppb (12) N/A 28.0 ppb (27) N/A N/A N/A 0.32 ppb (4) N/A N/A 38.0
 
March 5, 2021, 10 p.m. 31.7 ppb (30) 10.0 ppb (10) N/A 22.0 ppb (21) N/A N/A N/A 0.27 ppb (4) N/A N/A 30.0
 
March 5, 2021, 9 p.m. 40.0 ppb (38) 13.0 ppb (13) N/A 27.0 ppb (26) N/A N/A N/A 0.29 ppb (4) N/A N/A 38.0
 
March 5, 2021, 8 p.m. 25.4 ppb (24) 6.5 ppb (7) N/A 19.0 ppb (18) N/A N/A N/A 0.25 ppb (3) N/A N/A 24.0
 
March 5, 2021, 7 p.m. 24.2 ppb (23) 6.1 ppb (6) N/A 18.0 ppb (17) N/A N/A N/A 0.23 ppb (3) N/A N/A 23.0
 
March 5, 2021, 6 p.m. 38.3 ppb (37) 12.7 ppb (12) N/A 26.0 ppb (25) N/A N/A N/A 0.3 ppb (4) N/A N/A 37.0
 
March 5, 2021, 5 p.m. 116.7 ppb (104) 69.3 ppb (68) N/A 48.0 ppb (46) N/A N/A N/A 0.54 ppb (6) N/A N/A 104.0
 
March 5, 2021, 4 p.m. 136.2 ppb (108) 87.6 ppb (87) N/A 49.0 ppb (47) N/A N/A N/A 0.66 ppb (8) N/A N/A 108.0
 
March 5, 2021, 3 p.m. 154.6 ppb (112) 109.9 ppb (103) N/A 45.0 ppb (43) N/A N/A N/A 0.77 ppb (10) N/A N/A 112.0
 
March 5, 2021, 2 p.m. 122.5 ppb (106) 85.3 ppb (85) N/A 38.0 ppb (36) N/A N/A N/A 0.72 ppb (8) N/A N/A 106.0
 
March 5, 2021, 1 p.m. 88.3 ppb (88) 52.1 ppb (50) N/A 36.0 ppb (34) N/A N/A N/A 0.51 ppb (6) N/A N/A 88.0
 
March 5, 2021, noon 61.2 ppb (59) 29.5 ppb (28) N/A 32.0 ppb (31) N/A N/A N/A 0.41 ppb (5) N/A N/A 59.0
 
March 5, 2021, 11 a.m. 46.4 ppb (44) 14.4 ppb (14) N/A 32.0 ppb (31) N/A N/A N/A 0.36 ppb (5) N/A N/A 44.0
 
March 5, 2021, 10 a.m. 35.6 ppb (34) 4.6 ppb (5) N/A 31.0 ppb (30) N/A N/A N/A 0.36 ppb (5) N/A N/A 34.0
 
March 5, 2021, 9 a.m. 45.7 ppb (44) 13.3 ppb (13) N/A 33.0 ppb (32) N/A N/A N/A 0.49 ppb (6) N/A N/A 44.0
 
March 5, 2021, 8 a.m. 66.9 ppb (65) 31.9 ppb (31) N/A 35.0 ppb (34) N/A N/A N/A 0.64 ppb (7) N/A N/A 65.0
 
March 5, 2021, 7 a.m. 80.0 ppb (79) 40.9 ppb (39) N/A 39.0 ppb (37) N/A N/A N/A 0.69 ppb (8) N/A N/A 79.0
 
March 5, 2021, 6 a.m. 102.4 ppb (102) 57.1 ppb (55) N/A 46.0 ppb (44) N/A N/A N/A 0.65 ppb (8) N/A N/A 102.0
 
March 5, 2021, 5 a.m. 103.2 ppb (102) 49.9 ppb (48) N/A 54.0 ppb (51) N/A N/A N/A 0.74 ppb (8) N/A N/A 102.0
 
March 5, 2021, 4 a.m. 88.0 ppb (88) 32.0 ppb (31) N/A 56.0 ppb (54) N/A N/A N/A 0.7 ppb (8) N/A N/A 88.0
 
March 5, 2021, 3 a.m. 81.8 ppb (81) 31.3 ppb (30) N/A 51.0 ppb (49) N/A N/A N/A 0.59 ppb (7) N/A N/A 81.0
 
March 5, 2021, 2 a.m. 72.1 ppb (71) 25.6 ppb (25) N/A 47.0 ppb (45) N/A N/A N/A 0.54 ppb (6) N/A N/A 71.0
 
March 5, 2021, 1 a.m. 50.0 ppb (48) 16.4 ppb (16) N/A 34.0 ppb (33) N/A N/A N/A 0.4 ppb (5) N/A N/A 48.0
 
March 5, 2021, midnight 32.4 ppb (31) 8.6 ppb (9) N/A 24.0 ppb (23) N/A N/A N/A 0.32 ppb (4) N/A N/A 31.0
 
March 4, 2021, 11 p.m. 16.5 ppb (16) 3.8 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.24 ppb (3) N/A N/A 16.0
 
March 4, 2021, 10 p.m. 34.2 ppb (33) 12.6 ppb (12) N/A 22.0 ppb (21) N/A N/A N/A 0.29 ppb (4) N/A N/A 33.0
 
March 4, 2021, 9 p.m. 40.1 ppb (38) 17.1 ppb (17) N/A 23.0 ppb (22) N/A N/A N/A 0.28 ppb (4) N/A N/A 38.0
 
March 4, 2021, 8 p.m. 34.7 ppb (33) 15.5 ppb (15) N/A 19.0 ppb (18) N/A N/A N/A 0.27 ppb (4) N/A N/A 33.0
 
March 4, 2021, 7 p.m. 46.2 ppb (44) 22.8 ppb (22) N/A 23.0 ppb (22) N/A N/A N/A 0.27 ppb (4) N/A N/A 44.0
 
March 4, 2021, 6 p.m. 55.5 ppb (53) 26.8 ppb (26) N/A 29.0 ppb (28) N/A N/A N/A 0.32 ppb (4) N/A N/A 53.0
 
March 4, 2021, 5 p.m. 64.7 ppb (63) 34.1 ppb (33) N/A 31.0 ppb (30) N/A N/A N/A 0.36 ppb (5) N/A N/A 63.0
 
March 4, 2021, 4 p.m. 103.3 ppb (102) 67.8 ppb (66) N/A 36.0 ppb (34) N/A N/A N/A 0.55 ppb (7) N/A N/A 102.0
 
March 4, 2021, 3 p.m. 113.0 ppb (104) 77.4 ppb (76) N/A 36.0 ppb (34) N/A N/A N/A 0.7 ppb (8) N/A N/A 104.0
 
March 4, 2021, 2 p.m. 123.2 ppb (106) 94.1 ppb (94) N/A 29.0 ppb (28) N/A N/A N/A 0.62 ppb (7) N/A N/A 106.0
 
March 4, 2021, 1 p.m. 82.1 ppb (81) 54.9 ppb (52) N/A 27.0 ppb (26) N/A N/A N/A 0.45 ppb (6) N/A N/A 81.0
 
March 4, 2021, noon 61.4 ppb (59) 35.3 ppb (34) N/A 26.0 ppb (25) N/A N/A N/A 0.4 ppb (5) N/A N/A 59.0
 
March 4, 2021, 11 a.m. 89.6 ppb (89) 60.3 ppb (58) N/A 30.0 ppb (29) N/A N/A N/A 0.53 ppb (6) N/A N/A 89.0
 
March 4, 2021, 10 a.m. 101.7 ppb (102) 72.1 ppb (71) N/A 30.0 ppb (29) N/A N/A N/A 0.73 ppb (8) N/A N/A 102.0
 
March 4, 2021, 9 a.m. 94.1 ppb (94) 61.8 ppb (60) N/A 33.0 ppb (32) N/A N/A N/A 0.58 ppb (7) N/A N/A 94.0
 
March 4, 2021, 8 a.m. 107.2 ppb (103) 72.2 ppb (71) N/A 35.0 ppb (34) N/A N/A N/A 0.69 ppb (8) N/A N/A 103.0
 
March 4, 2021, 7 a.m. 90.7 ppb (91) 47.6 ppb (45) N/A 43.0 ppb (41) N/A N/A N/A 0.62 ppb (7) N/A N/A 91.0
 
March 4, 2021, 6 a.m. 85.2 ppb (85) 40.8 ppb (39) N/A 45.0 ppb (43) N/A N/A N/A 0.53 ppb (6) N/A N/A 85.0
 
March 4, 2021, 5 a.m. 35.6 ppb (34) 5.8 ppb (6) N/A 30.0 ppb (29) N/A N/A N/A 0.32 ppb (4) N/A N/A 34.0
 
March 4, 2021, 4 a.m. 27.0 ppb (26) 1.8 ppb (2) N/A 25.0 ppb (24) N/A N/A N/A 0.3 ppb (4) N/A N/A 26.0
 
March 4, 2021, 3 a.m. 24.8 ppb (24) 1.2 ppb (2) N/A 24.0 ppb (23) N/A N/A N/A 0.27 ppb (4) N/A N/A 24.0
 
March 4, 2021, 2 a.m. 29.8 ppb (29) 2.4 ppb (3) N/A 28.0 ppb (27) N/A N/A N/A 0.32 ppb (4) N/A N/A 29.0
 
March 4, 2021, 1 a.m. 17.5 ppb (17) 0.5 ppb (1) N/A 17.0 ppb (17) N/A N/A N/A 0.25 ppb (3) N/A N/A 17.0
 
March 4, 2021, midnight 22.4 ppb (22) 4.3 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.23 ppb (3) N/A N/A 22.0
 
March 3, 2021, 11 p.m. 37.6 ppb (36) 11.2 ppb (11) N/A 27.0 ppb (26) N/A N/A N/A 0.28 ppb (4) N/A N/A 36.0
 
March 3, 2021, 10 p.m. 15.0 ppb (15) 4.5 ppb (5) N/A 11.0 ppb (11) N/A N/A N/A 0.21 ppb (3) N/A N/A 15.0
 
March 3, 2021, 9 p.m. 26.1 ppb (25) 8.9 ppb (9) N/A 17.0 ppb (17) N/A N/A N/A 0.22 ppb (3) N/A N/A 25.0
 
March 3, 2021, 8 p.m. 56.3 ppb (54) 25.9 ppb (25) N/A 31.0 ppb (30) N/A N/A N/A 0.28 ppb (4) N/A N/A 54.0
 
March 3, 2021, 7 p.m. 41.3 ppb (39) 16.3 ppb (16) N/A 25.0 ppb (24) N/A N/A N/A 0.28 ppb (4) N/A N/A 39.0
 
March 3, 2021, 6 p.m. 38.6 ppb (37) 9.1 ppb (9) N/A 30.0 ppb (29) N/A N/A N/A 0.36 ppb (5) N/A N/A 37.0
 
March 3, 2021, 5 p.m. 116.4 ppb (104) 69.5 ppb (68) N/A 47.0 ppb (45) N/A N/A N/A 0.58 ppb (7) N/A N/A 104.0
 
March 3, 2021, 4 p.m. 59.7 ppb (58) 27.7 ppb (27) N/A 32.0 ppb (31) N/A N/A N/A 0.44 ppb (5) N/A N/A 58.0
 
March 3, 2021, 3 p.m. 129.4 ppb (107) 80.6 ppb (80) N/A 49.0 ppb (47) N/A N/A N/A 0.7 ppb (8) N/A N/A 107.0
 
March 3, 2021, 2 p.m. 220.5 ppb (124) 172.2 ppb (115) N/A 49.0 ppb (47) N/A N/A N/A 0.91 ppb (11) N/A N/A 124.0
 
March 3, 2021, 1 p.m. 200.2 ppb (120) 152.9 ppb (111) N/A 48.0 ppb (46) N/A N/A N/A 0.8 ppb (10) N/A N/A 120.0
 
March 3, 2021, noon 166.0 ppb (114) 117.0 ppb (105) N/A 50.0 ppb (48) N/A N/A N/A 0.77 ppb (10) N/A N/A 114.0
 
March 3, 2021, 11 a.m. 103.8 ppb (102) 61.6 ppb (60) N/A 42.0 ppb (40) N/A N/A N/A 0.56 ppb (7) N/A N/A 102.0
 
March 3, 2021, 10 a.m. 97.6 ppb (98) 57.7 ppb (55) N/A 40.0 ppb (38) N/A N/A N/A 0.68 ppb (8) N/A N/A 98.0
 
March 3, 2021, 9 a.m. 79.5 ppb (79) 40.4 ppb (39) N/A 39.0 ppb (37) N/A N/A N/A 0.6 ppb (7) N/A N/A 79.0
 
March 3, 2021, 8 a.m. 89.3 ppb (89) 45.1 ppb (43) N/A 44.0 ppb (42) N/A N/A N/A 0.59 ppb (7) N/A N/A 89.0
 
March 3, 2021, 7 a.m. 109.6 ppb (103) 59.6 ppb (57) N/A 50.0 ppb (48) N/A N/A N/A 0.75 ppb (10) N/A N/A 103.0
 
March 3, 2021, 6 a.m. 62.4 ppb (60) 16.8 ppb (16) N/A 46.0 ppb (44) N/A N/A N/A 0.55 ppb (7) N/A N/A 60.0
 
March 3, 2021, 5 a.m. 71.2 ppb (70) 20.7 ppb (20) N/A 51.0 ppb (49) N/A N/A N/A 0.51 ppb (6) N/A N/A 70.0
 
March 3, 2021, 4 a.m. 79.3 ppb (78) 25.4 ppb (24) N/A 54.0 ppb (51) N/A N/A N/A 0.48 ppb (6) N/A N/A 78.0
 
March 3, 2021, 3 a.m. 43.7 ppb (42) 7.6 ppb (8) N/A 36.0 ppb (34) N/A N/A N/A 0.36 ppb (5) N/A N/A 42.0
 
March 3, 2021, 2 a.m. 36.8 ppb (35) 5.6 ppb (6) N/A 31.0 ppb (30) N/A N/A N/A 0.32 ppb (4) N/A N/A 35.0
 
March 3, 2021, 1 a.m. 51.1 ppb (49) 15.6 ppb (15) N/A 36.0 ppb (34) N/A N/A N/A 0.38 ppb (5) N/A N/A 49.0
 
March 3, 2021, midnight 55.2 ppb (53) 21.5 ppb (21) N/A 34.0 ppb (33) N/A N/A N/A 0.4 ppb (5) N/A N/A 53.0
 
March 2, 2021, 11 p.m. 46.6 ppb (44) 16.7 ppb (16) N/A 30.0 ppb (29) N/A N/A N/A 0.38 ppb (5) N/A N/A 44.0
 
March 2, 2021, 10 p.m. 18.2 ppb (18) 5.4 ppb (6) N/A 13.0 ppb (13) N/A N/A N/A 0.21 ppb (3) N/A N/A 18.0
 
March 2, 2021, 9 p.m. 13.9 ppb (14) 3.9 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.19 ppb (3) N/A N/A 14.0
 
March 2, 2021, 8 p.m. 14.5 ppb (14) 3.9 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.2 ppb (3) N/A N/A 14.0
 
March 2, 2021, 7 p.m. 22.4 ppb (22) 8.6 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.22 ppb (3) N/A N/A 22.0
 
March 2, 2021, 6 p.m. 37.5 ppb (36) 14.7 ppb (14) N/A 23.0 ppb (22) N/A N/A N/A 0.29 ppb (4) N/A N/A 36.0
 
March 2, 2021, 5 p.m. 76.2 ppb (75) 38.7 ppb (37) N/A 38.0 ppb (36) N/A N/A N/A 0.49 ppb (6) N/A N/A 75.0
 
March 2, 2021, 4 p.m. 110.7 ppb (103) 68.5 ppb (67) N/A 42.0 ppb (40) N/A N/A N/A 0.56 ppb (7) N/A N/A 103.0
 
March 2, 2021, 3 p.m. 98.9 ppb (99) 57.9 ppb (56) N/A 41.0 ppb (39) N/A N/A N/A 0.52 ppb (6) N/A N/A 99.0
 
March 2, 2021, 2 p.m. 156.3 ppb (112) 111.7 ppb (104) N/A 45.0 ppb (43) N/A N/A N/A 0.64 ppb (7) N/A N/A 112.0
 
March 2, 2021, 1 p.m. 83.5 ppb (83) 43.0 ppb (41) N/A 41.0 ppb (39) N/A N/A N/A 0.41 ppb (5) N/A N/A 83.0
 
March 2, 2021, noon 51.2 ppb (49) 16.0 ppb (16) N/A 35.0 ppb (34) N/A N/A N/A 0.33 ppb (4) N/A N/A 49.0
 
March 2, 2021, 11 a.m. 57.2 ppb (55) 20.3 ppb (20) N/A 37.0 ppb (35) N/A N/A N/A 0.41 ppb (5) N/A N/A 55.0
 
March 2, 2021, 10 a.m. 82.0 ppb (81) 41.7 ppb (40) N/A 41.0 ppb (39) N/A N/A N/A 0.43 ppb (5) N/A N/A 81.0
 
March 2, 2021, 9 a.m. 50.0 ppb (48) 13.4 ppb (13) N/A 37.0 ppb (35) N/A N/A N/A 0.38 ppb (5) N/A N/A 48.0
 
March 2, 2021, 8 a.m. 42.9 ppb (41) 7.3 ppb (7) N/A 36.0 ppb (34) N/A N/A N/A 0.39 ppb (5) N/A N/A 41.0
 
March 2, 2021, 7 a.m. 39.5 ppb (38) 4.5 ppb (5) N/A 35.0 ppb (34) N/A N/A N/A 0.4 ppb (5) N/A N/A 38.0
 
March 2, 2021, 6 a.m. 71.1 ppb (70) 33.1 ppb (32) N/A 38.0 ppb (36) N/A N/A N/A 0.51 ppb (6) N/A N/A 70.0
 
March 2, 2021, 5 a.m. 73.0 ppb (72) 29.7 ppb (29) N/A 44.0 ppb (42) N/A N/A N/A 0.42 ppb (5) N/A N/A 72.0
 
March 2, 2021, 4 a.m. 28.9 ppb (28) 1.1 ppb (2) N/A 28.0 ppb (27) N/A N/A N/A 0.25 ppb (3) N/A N/A 28.0
 
March 2, 2021, 3 a.m. 24.8 ppb (24) 2.3 ppb (3) N/A 23.0 ppb (22) N/A N/A N/A 0.4 ppb (5) N/A N/A 24.0
 
March 2, 2021, 2 a.m. 24.2 ppb (23) 1.9 ppb (2) N/A 22.0 ppb (21) N/A N/A N/A 0.43 ppb (5) N/A N/A 23.0
 
March 2, 2021, 1 a.m. 34.9 ppb (33) 7.4 ppb (7) N/A 28.0 ppb (27) N/A N/A N/A 0.28 ppb (4) N/A N/A 33.0
 
March 2, 2021, midnight 42.2 ppb (40) 14.6 ppb (14) N/A 28.0 ppb (27) N/A N/A N/A 0.3 ppb (4) N/A N/A 40.0
 
March 1, 2021, 11 p.m. 39.8 ppb (38) 16.2 ppb (16) N/A 24.0 ppb (23) N/A N/A N/A 0.28 ppb (4) N/A N/A 38.0
 
March 1, 2021, 10 p.m. 26.4 ppb (25) 10.5 ppb (10) N/A 16.0 ppb (16) N/A N/A N/A 0.23 ppb (3) N/A N/A 25.0
 
March 1, 2021, 9 p.m. 28.0 ppb (27) 11.3 ppb (11) N/A 17.0 ppb (17) N/A N/A N/A 0.23 ppb (3) N/A N/A 27.0
 
March 1, 2021, 8 p.m. 46.4 ppb (44) 21.6 ppb (21) N/A 25.0 ppb (24) N/A N/A N/A 0.25 ppb (3) N/A N/A 44.0
 
March 1, 2021, 7 p.m. 49.3 ppb (47) 24.9 ppb (24) N/A 25.0 ppb (24) N/A N/A N/A 0.27 ppb (4) N/A N/A 47.0
 
March 1, 2021, 6 p.m. 54.9 ppb (52) 28.3 ppb (27) N/A 27.0 ppb (26) N/A N/A N/A 0.28 ppb (4) N/A N/A 52.0
 
March 1, 2021, 5 p.m. 56.9 ppb (55) 26.3 ppb (25) N/A 31.0 ppb (30) N/A N/A N/A 0.38 ppb (5) N/A N/A 55.0
 
March 1, 2021, 4 p.m. 54.8 ppb (52) 24.4 ppb (24) N/A 31.0 ppb (30) N/A N/A N/A 0.44 ppb (5) N/A N/A 52.0
 
March 1, 2021, 3 p.m. 127.4 ppb (106) 85.4 ppb (85) N/A 42.0 ppb (40) N/A N/A N/A 0.66 ppb (8) N/A N/A 106.0
 
March 1, 2021, 2 p.m. 146.5 ppb (110) 104.0 ppb (102) N/A 43.0 ppb (41) N/A N/A N/A 0.67 ppb (8) N/A N/A 110.0
 
March 1, 2021, 1 p.m. 130.6 ppb (107) 89.8 ppb (90) N/A 41.0 ppb (39) N/A N/A N/A 0.61 ppb (7) N/A N/A 107.0
 
March 1, 2021, noon 79.3 ppb (78) 38.9 ppb (37) N/A 41.0 ppb (39) N/A N/A N/A 0.41 ppb (5) N/A N/A 78.0
 
March 1, 2021, 11 a.m. 46.3 ppb (44) 12.8 ppb (13) N/A 34.0 ppb (33) N/A N/A N/A 0.46 ppb (6) N/A N/A 44.0
 
March 1, 2021, 10 a.m. 53.9 ppb (51) 19.1 ppb (19) N/A 35.0 ppb (34) N/A N/A N/A 0.51 ppb (6) N/A N/A 51.0
 
March 1, 2021, 9 a.m. 58.7 ppb (57) 23.6 ppb (23) N/A 35.0 ppb (34) N/A N/A N/A 0.56 ppb (7) N/A N/A 57.0