ID: 497

AQSQID: 260810020

Site Name: Grand Rapids

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

Updated: Sept. 22, 2020, 2:39 p.m.

Location: Grand Rapids (Belknap Lookout), MI

Reporting: True, Located: True

Current AQI: 48.0

Grand Rapids (Belknap Lookout) MI, US: 42.984699, -85.671097

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2020, 1 p.m. N/A N/A 28.9 ppb (27) N/A N/A N/A 16.0 ppb (12) 0.84 ppb (9) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 22, 2020, noon N/A N/A 41.9 ppb (39) N/A N/A N/A 10.0 ppb (8) 0.98 ppb (11) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 22, 2020, 11 a.m. N/A N/A 58.2 ppb (54) N/A N/A 1.0 ppb (1) 2.0 ppb (2) 1.15 ppb (13) N/A 12.1 μg/m3 (50) 54.0
 
Sept. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) 0.81 ppb (9) N/A 6.8 μg/m3 (28) 28.0
 
Sept. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) 0.77 ppb (9) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 22, 2020, 8 a.m. N/A N/A 10.0 ppb (9) N/A N/A 1.0 ppb (1) 18.0 ppb (14) N/A N/A 7.3 μg/m3 (30) 30.0
 
Sept. 22, 2020, 7 a.m. N/A N/A 9.4 ppb (9) N/A N/A 1.0 ppb (1) N/A 0.74 ppb (8) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 22, 2020, 6 a.m. N/A N/A 6.0 ppb (6) N/A N/A N/A 31.0 ppb (24) 0.71 ppb (8) N/A 6.8 μg/m3 (28) 28.0
 
Sept. 22, 2020, 5 a.m. N/A N/A 5.3 ppb (5) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.72 ppb (8) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 22, 2020, 4 a.m. N/A N/A 6.3 ppb (6) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.76 ppb (8) N/A 8.2 μg/m3 (34) 34.0
 
Sept. 22, 2020, 3 a.m. N/A N/A 7.3 ppb (7) N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.76 ppb (8) N/A 7.2 μg/m3 (30) 30.0
 
Sept. 22, 2020, 2 a.m. N/A N/A 14.1 ppb (13) N/A N/A 1.0 ppb (1) 24.0 ppb (18) 0.89 ppb (10) N/A 10.9 μg/m3 (45) 45.0
 
Sept. 22, 2020, 1 a.m. N/A N/A 20.7 ppb (19) N/A N/A 1.0 ppb (1) 16.0 ppb (12) 1.02 ppb (11) N/A 15.4 μg/m3 (57) 57.0
 
Sept. 22, 2020, midnight N/A N/A 16.2 ppb (15) N/A N/A 1.0 ppb (1) 23.0 ppb (18) 0.94 ppb (10) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 21, 2020, 11 p.m. N/A N/A 14.4 ppb (13) N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.81 ppb (9) N/A 8.2 μg/m3 (34) 34.0
 
Sept. 21, 2020, 10 p.m. N/A N/A 4.0 ppb (4) N/A N/A 1.0 ppb (1) 49.0 ppb (38) 0.7 ppb (8) N/A 5.2 μg/m3 (22) 38.0
 
Sept. 21, 2020, 9 p.m. N/A N/A 4.2 ppb (4) N/A N/A 1.0 ppb (1) 51.0 ppb (39) 0.7 ppb (8) N/A 6.4 μg/m3 (27) 39.0
 
Sept. 21, 2020, 8 p.m. N/A N/A 3.6 ppb (3) N/A N/A 1.0 ppb (1) 51.0 ppb (39) 0.69 ppb (8) N/A 7.9 μg/m3 (33) 39.0
 
Sept. 21, 2020, 7 p.m. N/A N/A 3.9 ppb (4) N/A N/A 1.0 ppb (1) 49.0 ppb (38) 0.68 ppb (8) N/A 4.5 μg/m3 (19) 38.0
 
Sept. 21, 2020, 6 p.m. N/A N/A 4.1 ppb (4) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.68 ppb (8) N/A 4.4 μg/m3 (18) 36.0
 
Sept. 21, 2020, 5 p.m. N/A N/A 4.5 ppb (4) N/A N/A 1.0 ppb (1) 43.0 ppb (33) 0.68 ppb (8) N/A N/A 33.0
 
Sept. 21, 2020, 4 p.m. N/A N/A 5.9 ppb (5) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.69 ppb (8) N/A 4.5 μg/m3 (19) 30.0
 
Sept. 21, 2020, 3 p.m. N/A N/A 13.3 ppb (12) N/A N/A 1.0 ppb (1) 29.0 ppb (22) 0.73 ppb (8) N/A 6.6 μg/m3 (28) 28.0
 
Sept. 21, 2020, 2 p.m. N/A N/A 15.4 ppb (14) N/A N/A 1.0 ppb (1) 22.0 ppb (17) 0.76 ppb (8) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2020, 1 p.m. N/A N/A 17.3 ppb (16) N/A N/A 1.0 ppb (1) 18.0 ppb (14) 0.79 ppb (9) N/A 5.5 μg/m3 (23) 23.0
 
Sept. 21, 2020, noon N/A N/A 22.3 ppb (21) N/A N/A 1.0 ppb (1) 10.0 ppb (8) 0.87 ppb (10) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2020, 11 a.m. N/A N/A 26.7 ppb (25) N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.97 ppb (11) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) 0.78 ppb (9) N/A 7.2 μg/m3 (30) 30.0
 
Sept. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 18.0 ppb (14) 0.69 ppb (8) N/A 6.6 μg/m3 (28) 28.0
 
Sept. 21, 2020, 8 a.m. N/A N/A 4.2 ppb (4) N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 21, 2020, 7 a.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) N/A 0.65 ppb (7) N/A 4.1 μg/m3 (17) 17.0
 
Sept. 21, 2020, 6 a.m. N/A N/A 5.6 ppb (5) N/A N/A N/A 29.0 ppb (22) 0.65 ppb (7) N/A 4.9 μg/m3 (20) 22.0
 
Sept. 21, 2020, 5 a.m. N/A N/A 1.6 ppb (1) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.65 ppb (7) N/A 4.4 μg/m3 (18) 25.0
 
Sept. 21, 2020, 4 a.m. N/A N/A 2.0 ppb (2) N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.65 ppb (7) N/A 4.6 μg/m3 (19) 26.0
 
Sept. 21, 2020, 3 a.m. N/A N/A 2.2 ppb (2) N/A N/A 1.0 ppb (1) 35.0 ppb (27) 0.66 ppb (7) N/A 3.7 μg/m3 (15) 27.0
 
Sept. 21, 2020, 2 a.m. N/A N/A 2.2 ppb (2) N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.67 ppb (7) N/A 4.9 μg/m3 (20) 28.0
 
Sept. 21, 2020, 1 a.m. N/A N/A 7.7 ppb (7) N/A N/A 1.0 ppb (1) 31.0 ppb (24) 0.78 ppb (9) N/A 8.5 μg/m3 (35) 35.0
 
Sept. 21, 2020, midnight N/A N/A 10.7 ppb (10) N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.84 ppb (9) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 20, 2020, 11 p.m. N/A N/A 4.7 ppb (4) N/A N/A 1.0 ppb (1) 40.0 ppb (31) 0.71 ppb (8) N/A 5.0 μg/m3 (21) 31.0
 
Sept. 20, 2020, 10 p.m. N/A N/A 1.7 ppb (2) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.66 ppb (7) N/A 4.1 μg/m3 (17) 35.0
 
Sept. 20, 2020, 9 p.m. N/A N/A 1.4 ppb (1) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.65 ppb (7) N/A 4.9 μg/m3 (20) 35.0
 
Sept. 20, 2020, 8 p.m. N/A N/A 1.2 ppb (1) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.65 ppb (7) N/A 5.0 μg/m3 (21) 35.0
 
Sept. 20, 2020, 7 p.m. N/A N/A 1.3 ppb (1) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.65 ppb (7) N/A 4.6 μg/m3 (19) 35.0
 
Sept. 20, 2020, 6 p.m. N/A N/A 1.4 ppb (1) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.65 ppb (7) N/A 3.3 μg/m3 (14) 35.0
 
Sept. 20, 2020, 5 p.m. N/A N/A 1.4 ppb (1) N/A N/A 1.0 ppb (1) 43.0 ppb (33) 0.64 ppb (7) N/A 4.1 μg/m3 (17) 33.0
 
Sept. 20, 2020, 4 p.m. N/A N/A 1.8 ppb (2) N/A N/A 1.0 ppb (1) 42.0 ppb (32) 0.65 ppb (7) N/A 4.0 μg/m3 (17) 32.0
 
Sept. 20, 2020, 3 p.m. N/A N/A 2.7 ppb (3) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.66 ppb (7) N/A 3.7 μg/m3 (15) 30.0
 
Sept. 20, 2020, 2 p.m. N/A N/A 4.2 ppb (4) N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.67 ppb (7) N/A 4.7 μg/m3 (20) 25.0
 
Sept. 20, 2020, 1 p.m. N/A N/A 10.2 ppb (9) N/A N/A 1.0 ppb (1) 21.0 ppb (16) 0.75 ppb (8) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 20, 2020, noon N/A N/A 17.3 ppb (16) N/A N/A 1.0 ppb (1) 9.0 ppb (7) 0.9 ppb (10) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 20, 2020, 11 a.m. N/A N/A 19.2 ppb (18) N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.91 ppb (10) N/A 19.3 μg/m3 (66) 66.0
 
Sept. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.87 ppb (10) N/A 11.8 μg/m3 (49) 49.0
 
Sept. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.88 ppb (10) N/A 12.7 μg/m3 (51) 51.0
 
Sept. 20, 2020, 8 a.m. N/A N/A 17.4 ppb (16) N/A N/A 1.0 ppb (1) 3.0 ppb (2) N/A N/A 17.4 μg/m3 (61) 61.0
 
Sept. 20, 2020, 7 a.m. N/A N/A 18.0 ppb (17) N/A N/A 1.0 ppb (1) N/A 1.03 ppb (11) N/A 21.5 μg/m3 (70) 70.0
 
Sept. 20, 2020, 6 a.m. N/A N/A 16.8 ppb (16) N/A N/A N/A 3.0 ppb (2) 1.03 ppb (11) N/A 23.2 μg/m3 (74) 74.0
 
Sept. 20, 2020, 5 a.m. N/A N/A 18.1 ppb (17) N/A N/A 1.0 ppb (1) 3.0 ppb (2) 1.08 ppb (12) N/A 23.1 μg/m3 (74) 74.0
 
Sept. 20, 2020, 4 a.m. N/A N/A 18.5 ppb (17) N/A N/A 1.0 ppb (1) 5.0 ppb (4) 1.1 ppb (12) N/A 25.7 μg/m3 (79) 79.0
 
Sept. 20, 2020, 3 a.m. N/A N/A 21.6 ppb (20) N/A N/A 1.0 ppb (1) 4.0 ppb (3) 1.14 ppb (13) N/A 28.8 μg/m3 (86) 86.0
 
Sept. 20, 2020, 2 a.m. N/A N/A 27.0 ppb (25) N/A N/A 1.0 ppb (1) 5.0 ppb (4) 1.27 ppb (14) N/A 39.9 μg/m3 (111) 111.0
 
Sept. 20, 2020, 1 a.m. N/A N/A 23.7 ppb (22) N/A N/A 1.0 ppb (1) 8.0 ppb (6) 1.02 ppb (11) N/A 17.6 μg/m3 (62) 62.0
 
Sept. 20, 2020, midnight N/A N/A 13.9 ppb (13) N/A N/A 1.0 ppb (1) 19.0 ppb (15) 0.81 ppb (9) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 19, 2020, 11 p.m. N/A N/A 3.1 ppb (3) N/A N/A 1.0 ppb (1) 35.0 ppb (27) 0.65 ppb (7) N/A 4.8 μg/m3 (20) 27.0
 
Sept. 19, 2020, 10 p.m. N/A N/A 2.1 ppb (2) N/A N/A 1.0 ppb (1) 38.0 ppb (29) 0.63 ppb (7) N/A 3.9 μg/m3 (16) 29.0
 
Sept. 19, 2020, 9 p.m. N/A N/A 1.8 ppb (2) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.63 ppb (7) N/A 3.4 μg/m3 (14) 30.0
 
Sept. 19, 2020, 8 p.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.63 ppb (7) N/A 3.2 μg/m3 (13) 30.0
 
Sept. 19, 2020, 7 p.m. N/A N/A 1.8 ppb (2) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.63 ppb (7) N/A 3.0 μg/m3 (12) 30.0
 
Sept. 19, 2020, 6 p.m. N/A N/A 1.9 ppb (2) N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.64 ppb (7) N/A 2.6 μg/m3 (11) 28.0
 
Sept. 19, 2020, 5 p.m. N/A N/A 1.5 ppb (1) N/A N/A 1.0 ppb (1) 35.0 ppb (27) 0.62 ppb (7) N/A 2.8 μg/m3 (12) 27.0
 
Sept. 19, 2020, 4 p.m. N/A N/A 1.1 ppb (1) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.61 ppb (7) N/A 2.6 μg/m3 (11) 25.0
 
Sept. 19, 2020, 3 p.m. N/A N/A 1.9 ppb (2) N/A N/A 1.0 ppb (1) 30.0 ppb (23) 0.62 ppb (7) N/A 2.6 μg/m3 (11) 23.0
 
Sept. 19, 2020, 2 p.m. N/A N/A 4.7 ppb (4) N/A N/A 1.0 ppb (1) 26.0 ppb (20) 0.65 ppb (7) N/A 2.9 μg/m3 (12) 20.0
 
Sept. 19, 2020, 1 p.m. N/A N/A 10.7 ppb (10) N/A N/A 1.0 ppb (1) 18.0 ppb (14) 0.7 ppb (8) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2020, noon N/A N/A 18.2 ppb (17) N/A N/A 1.0 ppb (1) 7.0 ppb (5) 0.77 ppb (9) N/A 5.4 μg/m3 (23) 23.0
 
Sept. 19, 2020, 11 a.m. N/A N/A 15.2 ppb (14) N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.78 ppb (9) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 7.0 ppb (5) 0.76 ppb (8) N/A 11.1 μg/m3 (46) 46.0
 
Sept. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 8.0 ppb (6) 0.72 ppb (8) N/A 10.8 μg/m3 (45) 45.0
 
Sept. 19, 2020, 8 a.m. N/A N/A 8.1 ppb (8) N/A N/A 1.0 ppb (1) 9.0 ppb (7) N/A N/A 7.9 μg/m3 (33) 33.0
 
Sept. 19, 2020, 7 a.m. N/A N/A 9.7 ppb (9) N/A N/A 1.0 ppb (1) N/A 0.79 ppb (9) N/A 9.4 μg/m3 (39) 39.0
 
Sept. 19, 2020, 6 a.m. N/A N/A 12.3 ppb (11) N/A N/A N/A 4.0 ppb (3) 0.88 ppb (10) N/A 15.5 μg/m3 (57) 57.0
 
Sept. 19, 2020, 5 a.m. N/A N/A 16.7 ppb (15) N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.91 ppb (10) N/A 14.3 μg/m3 (55) 55.0
 
Sept. 19, 2020, 4 a.m. N/A N/A 18.2 ppb (17) N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.97 ppb (11) N/A 18.5 μg/m3 (64) 64.0
 
Sept. 19, 2020, 3 a.m. N/A N/A 24.0 ppb (22) N/A N/A 1.0 ppb (1) 4.0 ppb (3) 1.06 ppb (12) N/A 27.2 μg/m3 (82) 82.0
 
Sept. 19, 2020, 2 a.m. N/A N/A 22.8 ppb (21) N/A N/A 1.0 ppb (1) 6.0 ppb (5) 1.02 ppb (11) N/A 21.4 μg/m3 (70) 70.0
 
Sept. 19, 2020, 1 a.m. N/A N/A 19.6 ppb (18) N/A N/A 1.0 ppb (1) 9.0 ppb (7) 0.93 ppb (10) N/A 15.3 μg/m3 (57) 57.0
 
Sept. 19, 2020, midnight N/A N/A 16.0 ppb (15) N/A N/A 1.0 ppb (1) 14.0 ppb (11) 0.84 ppb (9) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2020, 11 p.m. N/A N/A 6.0 ppb (6) N/A N/A 1.0 ppb (1) 29.0 ppb (22) 0.67 ppb (7) N/A 5.4 μg/m3 (23) 23.0
 
Sept. 18, 2020, 10 p.m. N/A N/A 4.8 ppb (4) N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.65 ppb (7) N/A 4.1 μg/m3 (17) 25.0
 
Sept. 18, 2020, 9 p.m. N/A N/A 4.8 ppb (4) N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.64 ppb (7) N/A 4.4 μg/m3 (18) 25.0
 
Sept. 18, 2020, 8 p.m. N/A N/A 4.2 ppb (4) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.64 ppb (7) N/A 3.2 μg/m3 (13) 25.0
 
Sept. 18, 2020, 7 p.m. N/A N/A 3.9 ppb (4) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.64 ppb (7) N/A 3.1 μg/m3 (13) 25.0
 
Sept. 18, 2020, 6 p.m. N/A N/A 4.6 ppb (4) N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.63 ppb (7) N/A 2.6 μg/m3 (11) 25.0
 
Sept. 18, 2020, 5 p.m. N/A N/A 4.1 ppb (4) N/A N/A 1.0 ppb (1) 30.0 ppb (23) 0.64 ppb (7) N/A 3.0 μg/m3 (12) 23.0
 
Sept. 18, 2020, 4 p.m. N/A N/A 4.4 ppb (4) N/A N/A 1.0 ppb (1) 29.0 ppb (22) 0.65 ppb (7) N/A N/A 22.0
 
Sept. 18, 2020, 3 p.m. N/A N/A 4.2 ppb (4) N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.65 ppb (7) N/A 1.3 μg/m3 (5) 21.0
 
Sept. 18, 2020, 2 p.m. N/A N/A 5.9 ppb (5) N/A N/A 1.0 ppb (1) 23.0 ppb (18) 0.67 ppb (7) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2020, 1 p.m. N/A N/A 9.3 ppb (9) N/A N/A 1.0 ppb (1) 19.0 ppb (15) 0.68 ppb (8) N/A N/A 15.0
 
Sept. 18, 2020, noon N/A N/A 14.3 ppb (13) N/A N/A 1.0 ppb (1) 13.0 ppb (10) 0.7 ppb (8) N/A 4.8 μg/m3 (20) 20.0
 
Sept. 18, 2020, 11 a.m. N/A N/A 8.6 ppb (8) N/A N/A 1.0 ppb (1) 14.0 ppb (11) 0.7 ppb (8) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) 0.63 ppb (7) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 19.0 ppb (15) 0.63 ppb (7) N/A 4.2 μg/m3 (18) 18.0
 
Sept. 18, 2020, 8 a.m. N/A N/A 4.5 ppb (4) N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2020, 7 a.m. N/A N/A 3.1 ppb (3) N/A N/A 1.0 ppb (1) N/A 0.61 ppb (7) N/A 3.2 μg/m3 (13) 13.0
 
Sept. 18, 2020, 6 a.m. N/A N/A 3.3 ppb (3) N/A N/A N/A 23.0 ppb (18) 0.61 ppb (7) N/A 4.3 μg/m3 (18) 18.0
 
Sept. 18, 2020, 5 a.m. N/A N/A 4.5 ppb (4) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.64 ppb (7) N/A 3.4 μg/m3 (14) 18.0
 
Sept. 18, 2020, 4 a.m. N/A N/A 4.5 ppb (4) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.64 ppb (7) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2020, 3 a.m. N/A N/A 4.6 ppb (4) N/A N/A 1.0 ppb (1) 21.0 ppb (16) 0.65 ppb (7) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 18, 2020, 2 a.m. N/A N/A 8.3 ppb (8) N/A N/A 1.0 ppb (1) 20.0 ppb (15) 0.7 ppb (8) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 18, 2020, 1 a.m. N/A N/A 9.1 ppb (8) N/A N/A 1.0 ppb (1) 21.0 ppb (16) 0.71 ppb (8) N/A 5.4 μg/m3 (23) 23.0
 
Sept. 18, 2020, midnight N/A N/A 7.8 ppb (7) N/A N/A 1.0 ppb (1) 22.0 ppb (17) 0.69 ppb (8) N/A 5.4 μg/m3 (23) 23.0
 
Sept. 17, 2020, 11 p.m. N/A N/A 6.4 ppb (6) N/A N/A 1.0 ppb (1) 26.0 ppb (20) 0.7 ppb (8) N/A 3.7 μg/m3 (15) 20.0
 
Sept. 17, 2020, 10 p.m. N/A N/A 6.1 ppb (6) N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.68 ppb (8) N/A 4.2 μg/m3 (18) 21.0
 
Sept. 17, 2020, 9 p.m. N/A N/A 5.1 ppb (5) N/A N/A 1.0 ppb (1) 29.0 ppb (22) 0.69 ppb (8) N/A 3.4 μg/m3 (14) 22.0
 
Sept. 17, 2020, 8 p.m. N/A N/A 6.5 ppb (6) N/A N/A 1.0 ppb (1) 29.0 ppb (22) 0.67 ppb (7) N/A 3.9 μg/m3 (16) 22.0
 
Sept. 17, 2020, 7 p.m. N/A N/A 4.9 ppb (5) N/A N/A 1.0 ppb (1) 28.0 ppb (22) 0.65 ppb (7) N/A 4.7 μg/m3 (20) 22.0
 
Sept. 17, 2020, 6 p.m. N/A N/A 4.1 ppb (4) N/A N/A 1.0 ppb (1) 29.0 ppb (22) 0.65 ppb (7) N/A 3.2 μg/m3 (13) 22.0
 
Sept. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.65 ppb (7) N/A 2.5 μg/m3 (10) 21.0
 
Sept. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) 0.64 ppb (7) N/A 3.4 μg/m3 (14) 19.0
 
Sept. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) 0.67 ppb (7) N/A 3.3 μg/m3 (14) 17.0
 
Sept. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 20.0 ppb (15) 0.64 ppb (7) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 19.0 ppb (15) 0.65 ppb (7) N/A 3.8 μg/m3 (16) 16.0
 
Sept. 17, 2020, noon N/A N/A 10.3 ppb (10) N/A N/A 1.0 ppb (1) 18.0 ppb (14) 0.71 ppb (8) N/A 4.8 μg/m3 (20) 20.0
 
Sept. 17, 2020, 11 a.m. N/A N/A 8.4 ppb (8) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.68 ppb (8) N/A 3.9 μg/m3 (16) 16.0
 
Sept. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.67 ppb (7) N/A 2.7 μg/m3 (11) 16.0
 
Sept. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.66 ppb (7) N/A 2.2 μg/m3 (9) 15.0
 
Sept. 17, 2020, 8 a.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 0.3 μg/m3 (1) 15.0
 
Sept. 17, 2020, 7 a.m. N/A N/A 3.2 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.65 ppb (7) N/A 2.2 μg/m3 (9) 9.0
 
Sept. 17, 2020, 6 a.m. N/A N/A 2.8 ppb (3) N/A N/A N/A 16.0 ppb (12) 0.65 ppb (7) N/A 7.5 μg/m3 (31) 31.0
 
Sept. 17, 2020, 5 a.m. N/A N/A 3.9 ppb (4) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.7 ppb (8) N/A 7.3 μg/m3 (30) 30.0
 
Sept. 17, 2020, 4 a.m. N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.7 ppb (8) N/A 9.7 μg/m3 (40) 40.0
 
Sept. 17, 2020, 3 a.m. N/A N/A 4.4 ppb (4) N/A N/A 1.0 ppb (1) 24.0 ppb (18) 0.73 ppb (8) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 17, 2020, 2 a.m. N/A N/A 6.2 ppb (6) N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.73 ppb (8) N/A 11.8 μg/m3 (49) 49.0
 
Sept. 17, 2020, 1 a.m. N/A N/A 8.5 ppb (8) N/A N/A 1.0 ppb (1) 29.0 ppb (22) 0.73 ppb (8) N/A 12.6 μg/m3 (51) 51.0
 
Sept. 17, 2020, midnight N/A N/A 11.8 ppb (11) N/A N/A 1.0 ppb (1) 31.0 ppb (24) 0.8 ppb (9) N/A 15.2 μg/m3 (57) 57.0
 
Sept. 16, 2020, 11 p.m. N/A N/A 7.7 ppb (7) N/A N/A 1.0 ppb (1) 43.0 ppb (33) 0.72 ppb (8) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 16, 2020, 10 p.m. N/A N/A 7.6 ppb (7) N/A N/A 1.0 ppb (1) 49.0 ppb (38) 0.72 ppb (8) N/A 10.9 μg/m3 (45) 45.0
 
Sept. 16, 2020, 9 p.m. N/A N/A 8.0 ppb (7) N/A N/A 1.0 ppb (1) 50.0 ppb (38) 0.73 ppb (8) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 16, 2020, 8 p.m. N/A N/A 7.4 ppb (7) N/A N/A 1.0 ppb (1) 50.0 ppb (38) 0.69 ppb (8) N/A 12.5 μg/m3 (51) 51.0
 
Sept. 16, 2020, 7 p.m. N/A N/A 5.4 ppb (5) N/A N/A 1.0 ppb (1) 49.0 ppb (38) 0.67 ppb (7) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 16, 2020, 6 p.m. N/A N/A 4.9 ppb (5) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.66 ppb (7) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 16, 2020, 5 p.m. N/A N/A 5.1 ppb (5) N/A N/A 1.0 ppb (1) 44.0 ppb (34) 0.65 ppb (7) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 16, 2020, 4 p.m. N/A N/A 5.6 ppb (5) N/A N/A 1.0 ppb (1) 41.0 ppb (32) 0.64 ppb (7) N/A 10.2 μg/m3 (42) 42.0
 
Sept. 16, 2020, 3 p.m. N/A N/A 9.2 ppb (9) N/A N/A 1.0 ppb (1) 30.0 ppb (23) 0.66 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2020, 2 p.m. N/A N/A 12.4 ppb (11) N/A N/A 1.0 ppb (1) 23.0 ppb (18) 0.67 ppb (7) N/A 10.6 μg/m3 (44) 44.0
 
Sept. 16, 2020, 1 p.m. N/A N/A 25.3 ppb (23) N/A N/A 1.0 ppb (1) 12.0 ppb (9) 0.74 ppb (8) N/A 13.1 μg/m3 (52) 52.0
 
Sept. 16, 2020, noon N/A N/A 26.7 ppb (25) N/A N/A 1.0 ppb (1) 8.0 ppb (6) 0.79 ppb (9) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2020, 11 a.m. N/A N/A 27.9 ppb (26) N/A N/A 1.0 ppb (1) 6.0 ppb (5) 0.8 ppb (9) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 11.0 ppb (8) 0.72 ppb (8) N/A 6.8 μg/m3 (28) 28.0
 
Sept. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 19.0 ppb (15) 0.65 ppb (7) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 16, 2020, 8 a.m. N/A N/A 7.3 ppb (7) N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 16, 2020, 7 a.m. N/A N/A 7.2 ppb (7) N/A N/A 1.0 ppb (1) N/A 0.65 ppb (7) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2020, 6 a.m. N/A N/A 5.7 ppb (5) N/A N/A N/A 26.0 ppb (20) 0.62 ppb (7) N/A 4.1 μg/m3 (17) 20.0
 
Sept. 16, 2020, 5 a.m. N/A N/A 3.4 ppb (3) N/A N/A 1.0 ppb (1) 29.0 ppb (22) 0.62 ppb (7) N/A 3.9 μg/m3 (16) 22.0
 
Sept. 16, 2020, 4 a.m. N/A N/A 6.6 ppb (6) N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.65 ppb (7) N/A 3.7 μg/m3 (15) 21.0
 
Sept. 16, 2020, 3 a.m. N/A N/A 7.2 ppb (7) N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.67 ppb (7) N/A 5.5 μg/m3 (23) 23.0
 
Sept. 16, 2020, 2 a.m. N/A N/A 9.6 ppb (9) N/A N/A 1.0 ppb (1) 26.0 ppb (20) 0.72 ppb (8) N/A 8.7 μg/m3 (36) 36.0
 
Sept. 16, 2020, 1 a.m. N/A N/A 11.2 ppb (10) N/A N/A 1.0 ppb (1) 25.0 ppb (19) 0.73 ppb (8) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 16, 2020, midnight N/A N/A 9.0 ppb (8) N/A N/A 1.0 ppb (1) 28.0 ppb (22) 0.7 ppb (8) N/A 8.8 μg/m3 (37) 37.0
 
Sept. 15, 2020, 11 p.m. N/A N/A 5.9 ppb (5) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.67 ppb (7) N/A 8.8 μg/m3 (37) 37.0
 
Sept. 15, 2020, 10 p.m. N/A N/A 5.8 ppb (5) N/A N/A 1.0 ppb (1) 35.0 ppb (27) 0.64 ppb (7) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 15, 2020, 9 p.m. N/A N/A 4.9 ppb (5) N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.64 ppb (7) N/A 7.7 μg/m3 (32) 32.0
 
Sept. 15, 2020, 8 p.m. N/A N/A 5.7 ppb (5) N/A N/A 1.0 ppb (1) 38.0 ppb (29) 0.64 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2020, 7 p.m. N/A N/A 4.8 ppb (4) N/A N/A 1.0 ppb (1) 38.0 ppb (29) 0.62 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2020, 6 p.m. N/A N/A 5.1 ppb (5) N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.62 ppb (7) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 15, 2020, 5 p.m. N/A N/A 5.0 ppb (5) N/A N/A 1.0 ppb (1) 29.0 ppb (22) 0.61 ppb (7) N/A 7.7 μg/m3 (32) 32.0
 
Sept. 15, 2020, 4 p.m. N/A N/A 6.1 ppb (6) N/A N/A 1.0 ppb (1) 24.0 ppb (18) 0.62 ppb (7) N/A 8.1 μg/m3 (34) 34.0
 
Sept. 15, 2020, 3 p.m. N/A N/A 14.1 ppb (13) N/A N/A 1.0 ppb (1) 18.0 ppb (14) 0.63 ppb (7) N/A 9.2 μg/m3 (38) 38.0
 
Sept. 15, 2020, 2 p.m. N/A N/A 12.7 ppb (12) N/A N/A 1.0 ppb (1) 16.0 ppb (12) 0.64 ppb (7) N/A 6.7 μg/m3 (28) 28.0