ID: 497

AQSQID: 260810020

Site Name: Grand Rapids

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

Updated: June 23, 2021, 8:52 p.m.

Location: Grand Rapids (Belknap Lookout), MI

Reporting: True, Located: True

Current AQI: 43.0

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
June 23, 2021, 7 p.m. N/A N/A 9.2 ppb (9) N/A N/A 1.0 ppb (2) 46.0 ppb (43) 0.21 ppb (3) N/A N/A 43.0
 
June 23, 2021, 6 p.m. N/A N/A 8.5 ppb (9) N/A N/A 1.0 ppb (2) 45.0 ppb (42) 0.2 ppb (3) N/A N/A 42.0
 
June 23, 2021, 5 p.m. N/A N/A 11.6 ppb (11) N/A N/A 1.0 ppb (2) 36.0 ppb (34) 0.22 ppb (3) N/A N/A 34.0
 
June 23, 2021, 4 p.m. N/A N/A 10.1 ppb (10) N/A N/A 1.0 ppb (2) 32.0 ppb (30) 0.19 ppb (3) N/A N/A 30.0
 
June 23, 2021, 3 p.m. N/A N/A 8.3 ppb (8) N/A N/A 1.0 ppb (2) N/A 0.17 ppb (3) N/A N/A 8.0
 
June 23, 2021, 2 p.m. N/A N/A 10.7 ppb (11) N/A N/A N/A 32.0 ppb (30) 0.17 ppb (3) N/A N/A 30.0
 
June 23, 2021, 1 p.m. N/A N/A 12.4 ppb (12) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.2 ppb (3) 16.0 μg/m3 (15) 5.4 μg/m3 (23) 26.0
 
June 23, 2021, noon N/A N/A 9.5 ppb (9) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) 16.0 μg/m3 (15) 5.2 μg/m3 (22) 28.0
 
June 23, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.19 ppb (3) 10.0 μg/m3 (10) 5.2 μg/m3 (22) 28.0
 
June 23, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.18 ppb (3) 12.0 μg/m3 (12) 5.2 μg/m3 (22) 25.0
 
June 23, 2021, 9 a.m. N/A N/A 25.6 ppb (25) N/A N/A 0.0 ppb (0) 12.0 ppb (12) 0.29 ppb (4) 16.0 μg/m3 (15) 7.2 μg/m3 (31) 31.0
 
June 23, 2021, 8 a.m. N/A N/A 14.4 ppb (14) N/A N/A 0.0 ppb (0) 11.0 ppb (11) N/A 17.0 μg/m3 (16) 8.3 μg/m3 (35) 35.0
 
June 23, 2021, 7 a.m. N/A N/A 16.1 ppb (16) N/A N/A 0.0 ppb (0) N/A 0.37 ppb (5) 18.0 μg/m3 (17) 8.8 μg/m3 (37) 37.0
 
June 23, 2021, 6 a.m. N/A N/A 17.9 ppb (17) N/A N/A N/A 5.0 ppb (5) 0.4 ppb (5) 18.0 μg/m3 (17) 9.1 μg/m3 (38) 38.0
 
June 23, 2021, 5 a.m. N/A N/A 22.2 ppb (21) N/A N/A 0.0 ppb (0) 5.0 ppb (5) 0.43 ppb (5) 19.0 μg/m3 (18) 10.4 μg/m3 (44) 44.0
 
June 23, 2021, 4 a.m. N/A N/A 22.7 ppb (22) N/A N/A 0.0 ppb (0) 7.0 ppb (7) 0.43 ppb (5) 19.0 μg/m3 (18) 10.6 μg/m3 (45) 45.0
 
June 23, 2021, 3 a.m. N/A N/A 17.8 ppb (17) N/A N/A 0.0 ppb (0) 15.0 ppb (14) 0.34 ppb (4) 15.0 μg/m3 (14) 7.3 μg/m3 (31) 31.0
 
June 23, 2021, 2 a.m. N/A N/A 15.8 ppb (15) N/A N/A 1.0 ppb (2) 22.0 ppb (21) 0.3 ppb (4) 12.0 μg/m3 (12) 5.2 μg/m3 (22) 22.0
 
June 23, 2021, 1 a.m. N/A N/A 9.3 ppb (9) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.22 ppb (3) 10.0 μg/m3 (10) 4.0 μg/m3 (17) 34.0
 
June 23, 2021, midnight N/A N/A 5.6 ppb (6) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.15 ppb (2) 8.0 μg/m3 (8) 2.7 μg/m3 (12) 39.0
 
June 22, 2021, 11 p.m. N/A N/A 4.9 ppb (5) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) 9.0 μg/m3 (9) 2.7 μg/m3 (12) 41.0
 
June 22, 2021, 10 p.m. N/A N/A 6.1 ppb (6) N/A N/A 1.0 ppb (2) 44.0 ppb (41) 0.16 ppb (3) 10.0 μg/m3 (10) 2.9 μg/m3 (13) 41.0
 
June 22, 2021, 9 p.m. N/A N/A 6.3 ppb (6) N/A N/A 1.0 ppb (2) 43.0 ppb (40) 0.18 ppb (3) 12.0 μg/m3 (12) 3.1 μg/m3 (13) 40.0
 
June 22, 2021, 8 p.m. N/A N/A 10.1 ppb (10) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.15 ppb (2) 12.0 μg/m3 (12) 3.7 μg/m3 (16) 35.0
 
June 22, 2021, 7 p.m. N/A N/A 5.7 ppb (6) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.14 ppb (2) 11.0 μg/m3 (11) 2.5 μg/m3 (11) 32.0
 
June 22, 2021, 6 p.m. N/A N/A 5.2 ppb (5) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.13 ppb (2) 9.0 μg/m3 (9) 2.5 μg/m3 (11) 27.0
 
June 22, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A 9.0 μg/m3 (9) 2.6 μg/m3 (11) 25.0
 
June 22, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) 0.47 ppb (6) 10.0 μg/m3 (10) 3.0 μg/m3 (13) 25.0
 
June 22, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.44 ppb (5) 10.0 μg/m3 (10) 2.5 μg/m3 (11) 25.0
 
June 22, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.45 ppb (6) 10.0 μg/m3 (10) 2.8 μg/m3 (12) 20.0
 
June 22, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) 0.49 ppb (6) 15.0 μg/m3 (14) 4.5 μg/m3 (19) 19.0
 
June 22, 2021, noon N/A N/A 29.7 ppb (29) N/A N/A 2.0 ppb (3) 9.0 ppb (9) 0.63 ppb (7) 23.0 μg/m3 (22) 8.5 μg/m3 (36) 36.0
 
June 22, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 3.0 ppb (3) 0.78 ppb (10) 19.0 μg/m3 (18) 8.6 μg/m3 (36) 36.0
 
June 22, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) 0.65 ppb (8) 16.0 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
June 22, 2021, 9 a.m. N/A N/A 15.3 ppb (15) N/A N/A 0.0 ppb (0) 0.0 ppb (0) 0.6 ppb (7) 14.0 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
June 22, 2021, 8 a.m. N/A N/A 13.5 ppb (13) N/A N/A 0.0 ppb (0) 0.0 ppb (0) N/A 19.0 μg/m3 (18) 10.1 μg/m3 (43) 43.0
 
June 22, 2021, 7 a.m. N/A N/A 10.9 ppb (11) N/A N/A 0.0 ppb (0) N/A 0.54 ppb (6) 19.0 μg/m3 (18) 10.8 μg/m3 (46) 46.0
 
June 22, 2021, 6 a.m. N/A N/A 7.3 ppb (7) N/A N/A N/A 5.0 ppb (5) 0.5 ppb (6) 15.0 μg/m3 (14) 6.1 μg/m3 (26) 26.0
 
June 22, 2021, 5 a.m. N/A N/A 5.6 ppb (6) N/A N/A 0.0 ppb (0) 9.0 ppb (9) 0.52 ppb (6) 10.0 μg/m3 (10) 4.6 μg/m3 (20) 20.0
 
June 22, 2021, 4 a.m. N/A N/A 6.3 ppb (6) N/A N/A 0.0 ppb (0) 12.0 ppb (12) 0.48 ppb (6) 10.0 μg/m3 (10) 5.7 μg/m3 (24) 24.0
 
June 22, 2021, 3 a.m. N/A N/A 4.9 ppb (5) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.46 ppb (6) 7.0 μg/m3 (7) 2.6 μg/m3 (11) 18.0
 
June 22, 2021, 2 a.m. N/A N/A 4.3 ppb (5) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.45 ppb (6) 7.0 μg/m3 (7) 2.8 μg/m3 (12) 20.0
 
June 22, 2021, 1 a.m. N/A N/A 3.7 ppb (4) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.44 ppb (5) 8.0 μg/m3 (8) 2.5 μg/m3 (11) 21.0
 
June 22, 2021, midnight N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.43 ppb (5) 9.0 μg/m3 (9) 2.9 μg/m3 (13) 20.0
 
June 21, 2021, 11 p.m. N/A N/A 3.7 ppb (4) N/A N/A 0.0 ppb (0) 17.0 ppb (16) 0.44 ppb (5) 10.0 μg/m3 (10) 3.0 μg/m3 (13) 16.0
 
June 21, 2021, 10 p.m. N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 16.0 ppb (15) 0.44 ppb (5) 10.0 μg/m3 (10) 3.4 μg/m3 (15) 15.0
 
June 21, 2021, 9 p.m. N/A N/A 5.4 ppb (6) N/A N/A 0.0 ppb (0) 14.0 ppb (13) 0.47 ppb (6) 9.0 μg/m3 (9) 3.7 μg/m3 (16) 16.0
 
June 21, 2021, 8 p.m. N/A N/A 6.1 ppb (6) N/A N/A 0.0 ppb (0) 14.0 ppb (13) 0.47 ppb (6) 11.0 μg/m3 (11) 3.7 μg/m3 (16) 16.0
 
June 21, 2021, 7 p.m. N/A N/A 6.8 ppb (7) N/A N/A 0.0 ppb (0) 17.0 ppb (16) 0.46 ppb (6) 12.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
June 21, 2021, 6 p.m. N/A N/A 5.1 ppb (5) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.44 ppb (5) 9.0 μg/m3 (9) 3.0 μg/m3 (13) 21.0
 
June 21, 2021, 5 p.m. N/A N/A 6.2 ppb (6) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.5 ppb (6) 9.0 μg/m3 (9) 2.6 μg/m3 (11) 27.0
 
June 21, 2021, 4 p.m. N/A N/A 5.6 ppb (6) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.45 ppb (6) 8.0 μg/m3 (8) 1.3 μg/m3 (6) 30.0
 
June 21, 2021, 3 p.m. N/A N/A 4.9 ppb (5) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.44 ppb (5) 6.0 μg/m3 (6) 1.2 μg/m3 (5) 26.0
 
June 21, 2021, 2 p.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.44 ppb (5) 8.0 μg/m3 (8) 1.5 μg/m3 (7) 24.0
 
June 21, 2021, 1 p.m. N/A N/A 3.8 ppb (4) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.44 ppb (5) 11.0 μg/m3 (11) 2.2 μg/m3 (10) 21.0
 
June 21, 2021, noon N/A N/A 5.5 ppb (6) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.48 ppb (6) 13.0 μg/m3 (13) 7.0 μg/m3 (30) 30.0
 
June 21, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.5 ppb (6) 12.0 μg/m3 (12) 6.5 μg/m3 (28) 35.0
 
June 21, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.48 ppb (6) 8.0 μg/m3 (8) 3.6 μg/m3 (16) 37.0
 
June 21, 2021, 9 a.m. N/A N/A 7.6 ppb (8) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.45 ppb (6) 10.0 μg/m3 (10) 4.4 μg/m3 (19) 36.0
 
June 21, 2021, 8 a.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A 10.0 μg/m3 (10) 4.8 μg/m3 (20) 39.0
 
June 21, 2021, 7 a.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.45 ppb (6) 10.0 μg/m3 (10) 5.1 μg/m3 (22) 22.0
 
June 21, 2021, 6 a.m. N/A N/A 2.8 ppb (3) N/A N/A N/A 42.0 ppb (39) 0.44 ppb (5) 14.0 μg/m3 (13) 6.4 μg/m3 (27) 39.0
 
June 21, 2021, 5 a.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.44 ppb (5) 14.0 μg/m3 (13) 6.4 μg/m3 (27) 36.0
 
June 21, 2021, 4 a.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.47 ppb (6) 14.0 μg/m3 (13) 7.6 μg/m3 (32) 38.0
 
June 21, 2021, 3 a.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.49 ppb (6) 13.0 μg/m3 (13) 7.7 μg/m3 (33) 39.0
 
June 21, 2021, 2 a.m. N/A N/A 4.1 ppb (4) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.49 ppb (6) 14.0 μg/m3 (13) 7.6 μg/m3 (32) 44.0
 
June 21, 2021, 1 a.m. N/A N/A 7.3 ppb (7) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.52 ppb (6) 16.0 μg/m3 (15) 7.6 μg/m3 (32) 38.0
 
June 21, 2021, midnight N/A N/A 7.3 ppb (7) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.53 ppb (6) 14.0 μg/m3 (13) 6.9 μg/m3 (29) 42.0
 
June 20, 2021, 11 p.m. N/A N/A 8.9 ppb (9) N/A N/A 1.0 ppb (2) 50.0 ppb (47) 0.53 ppb (6) 13.0 μg/m3 (13) 6.2 μg/m3 (26) 47.0
 
June 20, 2021, 10 p.m. N/A N/A 5.6 ppb (6) N/A N/A 1.0 ppb (2) 55.0 ppb (51) 0.47 ppb (6) 14.0 μg/m3 (13) 6.2 μg/m3 (26) 51.0
 
June 20, 2021, 9 p.m. N/A N/A 5.1 ppb (5) N/A N/A 1.0 ppb (2) 55.0 ppb (51) 0.47 ppb (6) 14.0 μg/m3 (13) 5.8 μg/m3 (25) 51.0
 
June 20, 2021, 8 p.m. N/A N/A 4.6 ppb (5) N/A N/A 0.0 ppb (0) 54.0 ppb (50) 0.46 ppb (6) 13.0 μg/m3 (13) 5.5 μg/m3 (23) 50.0
 
June 20, 2021, 7 p.m. N/A N/A 3.7 ppb (4) N/A N/A 0.0 ppb (0) 58.0 ppb (61) 0.43 ppb (5) 13.0 μg/m3 (13) 6.1 μg/m3 (26) 61.0
 
June 20, 2021, 6 p.m. N/A N/A 3.6 ppb (4) N/A N/A 0.0 ppb (0) 57.0 ppb (58) 0.42 ppb (5) 13.0 μg/m3 (13) 6.1 μg/m3 (26) 58.0
 
June 20, 2021, 5 p.m. N/A N/A 3.8 ppb (4) N/A N/A 1.0 ppb (2) 54.0 ppb (50) 0.43 ppb (5) 13.0 μg/m3 (13) 6.5 μg/m3 (28) 50.0
 
June 20, 2021, 4 p.m. N/A N/A 6.1 ppb (6) N/A N/A 2.0 ppb (3) 56.0 ppb (55) 0.45 ppb (6) 14.0 μg/m3 (13) 7.8 μg/m3 (33) 55.0
 
June 20, 2021, 3 p.m. N/A N/A 8.6 ppb (9) N/A N/A 3.0 ppb (5) 51.0 ppb (48) 0.47 ppb (6) 15.0 μg/m3 (14) 8.0 μg/m3 (34) 48.0
 
June 20, 2021, 2 p.m. N/A N/A 5.0 ppb (5) N/A N/A 1.0 ppb (2) 44.0 ppb (41) 0.47 ppb (6) 13.0 μg/m3 (13) 7.3 μg/m3 (31) 41.0
 
June 20, 2021, 1 p.m. N/A N/A 3.6 ppb (4) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.45 ppb (6) 14.0 μg/m3 (13) 6.7 μg/m3 (28) 32.0
 
June 20, 2021, noon N/A N/A 3.8 ppb (4) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.46 ppb (6) 13.0 μg/m3 (13) 6.8 μg/m3 (29) 29.0
 
June 20, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (9) 0.59 ppb (7) 17.0 μg/m3 (16) 10.7 μg/m3 (45) 45.0
 
June 20, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 5.0 ppb (5) 0.58 ppb (7) 17.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
June 20, 2021, 9 a.m. N/A N/A 6.6 ppb (7) N/A N/A 0.0 ppb (0) 6.0 ppb (6) 0.56 ppb (7) 18.0 μg/m3 (17) 10.2 μg/m3 (43) 43.0
 
June 20, 2021, 8 a.m. N/A N/A 6.7 ppb (7) N/A N/A 0.0 ppb (0) 8.0 ppb (8) N/A 18.0 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
June 20, 2021, 7 a.m. N/A N/A 7.0 ppb (7) N/A N/A 0.0 ppb (0) N/A 0.6 ppb (7) 18.0 μg/m3 (17) 11.4 μg/m3 (48) 48.0
 
June 20, 2021, 6 a.m. N/A N/A 10.2 ppb (10) N/A N/A N/A 6.0 ppb (6) 0.64 ppb (7) 21.0 μg/m3 (20) 13.9 μg/m3 (55) 55.0
 
June 20, 2021, 5 a.m. N/A N/A 13.1 ppb (13) N/A N/A 0.0 ppb (0) 7.0 ppb (7) 0.67 ppb (8) 25.0 μg/m3 (24) 18.2 μg/m3 (64) 64.0
 
June 20, 2021, 4 a.m. N/A N/A 11.7 ppb (12) N/A N/A 0.0 ppb (0) 14.0 ppb (13) 0.69 ppb (8) 23.0 μg/m3 (22) 16.4 μg/m3 (61) 61.0
 
June 20, 2021, 3 a.m. N/A N/A 12.2 ppb (12) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.69 ppb (8) 21.0 μg/m3 (20) 13.9 μg/m3 (55) 55.0
 
June 20, 2021, 2 a.m. N/A N/A 10.4 ppb (10) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.61 ppb (7) 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
June 20, 2021, 1 a.m. N/A N/A 6.1 ppb (6) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.51 ppb (6) 11.0 μg/m3 (11) 5.7 μg/m3 (24) 38.0
 
June 20, 2021, midnight N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.46 ppb (6) 9.0 μg/m3 (9) 4.7 μg/m3 (20) 44.0
 
June 19, 2021, 11 p.m. N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.45 ppb (6) 9.0 μg/m3 (9) 4.6 μg/m3 (20) 48.0
 
June 19, 2021, 10 p.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 54.0 ppb (50) 0.44 ppb (5) 8.0 μg/m3 (8) 4.1 μg/m3 (18) 50.0
 
June 19, 2021, 9 p.m. N/A N/A 3.8 ppb (4) N/A N/A 0.0 ppb (0) 56.0 ppb (55) 0.42 ppb (5) 7.0 μg/m3 (7) 3.3 μg/m3 (14) 55.0
 
June 19, 2021, 8 p.m. N/A N/A 3.3 ppb (4) N/A N/A 0.0 ppb (0) 57.0 ppb (58) 0.42 ppb (5) 6.0 μg/m3 (6) 2.6 μg/m3 (11) 58.0
 
June 19, 2021, 7 p.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) 57.0 ppb (58) 0.4 ppb (5) 9.0 μg/m3 (9) 2.9 μg/m3 (13) 58.0
 
June 19, 2021, 6 p.m. N/A N/A 3.8 ppb (4) N/A N/A 0.0 ppb (0) 52.0 ppb (49) 0.4 ppb (5) 8.0 μg/m3 (8) 3.2 μg/m3 (14) 49.0
 
June 19, 2021, 5 p.m. N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 53.0 ppb (50) 0.4 ppb (5) 11.0 μg/m3 (11) 3.4 μg/m3 (15) 50.0
 
June 19, 2021, 4 p.m. N/A N/A 5.4 ppb (6) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.44 ppb (5) 13.0 μg/m3 (13) 5.1 μg/m3 (22) 44.0
 
June 19, 2021, 3 p.m. N/A N/A 5.7 ppb (6) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.44 ppb (5) 12.0 μg/m3 (12) 4.3 μg/m3 (18) 42.0
 
June 19, 2021, 2 p.m. N/A N/A 5.8 ppb (6) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.41 ppb (5) 15.0 μg/m3 (14) 5.3 μg/m3 (23) 38.0
 
June 19, 2021, 1 p.m. N/A N/A 7.8 ppb (8) N/A N/A 1.0 ppb (2) 42.0 ppb (39) 0.45 ppb (6) 13.0 μg/m3 (13) 4.6 μg/m3 (20) 39.0
 
June 19, 2021, noon N/A N/A 6.4 ppb (7) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.44 ppb (5) 17.0 μg/m3 (16) 6.0 μg/m3 (25) 41.0
 
June 19, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.45 ppb (6) 18.0 μg/m3 (17) 10.5 μg/m3 (44) 44.0
 
June 19, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.5 ppb (6) 23.0 μg/m3 (22) 16.0 μg/m3 (60) 60.0
 
June 19, 2021, 9 a.m. N/A N/A 10.9 ppb (11) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.53 ppb (6) 24.0 μg/m3 (23) 15.8 μg/m3 (59) 59.0
 
June 19, 2021, 8 a.m. N/A N/A 10.6 ppb (10) N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A 25.0 μg/m3 (24) 16.7 μg/m3 (61) 61.0
 
June 19, 2021, 7 a.m. N/A N/A 11.1 ppb (11) N/A N/A 0.0 ppb (0) N/A 0.54 ppb (6) 25.0 μg/m3 (24) 16.2 μg/m3 (60) 60.0
 
June 19, 2021, 6 a.m. N/A N/A 9.9 ppb (10) N/A N/A N/A 44.0 ppb (41) 0.53 ppb (6) 24.0 μg/m3 (23) 14.7 μg/m3 (57) 57.0
 
June 19, 2021, 5 a.m. N/A N/A 7.7 ppb (8) N/A N/A 1.0 ppb (2) 52.0 ppb (49) 0.49 ppb (6) 22.0 μg/m3 (21) 12.1 μg/m3 (51) 51.0
 
June 19, 2021, 4 a.m. N/A N/A 5.6 ppb (6) N/A N/A 0.0 ppb (0) 55.0 ppb (51) 0.5 ppb (6) 22.0 μg/m3 (21) 11.5 μg/m3 (48) 51.0
 
June 19, 2021, 3 a.m. N/A N/A 5.9 ppb (6) N/A N/A 0.0 ppb (0) 53.0 ppb (50) 0.49 ppb (6) 21.0 μg/m3 (20) 11.6 μg/m3 (49) 50.0
 
June 19, 2021, 2 a.m. N/A N/A 7.4 ppb (7) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.51 ppb (6) 19.0 μg/m3 (18) 10.8 μg/m3 (46) 48.0
 
June 19, 2021, 1 a.m. N/A N/A 7.3 ppb (7) N/A N/A 1.0 ppb (2) 53.0 ppb (50) 0.51 ppb (6) 20.0 μg/m3 (19) 9.4 μg/m3 (40) 50.0
 
June 19, 2021, midnight N/A N/A 6.8 ppb (7) N/A N/A 3.0 ppb (5) 60.0 ppb (68) 0.49 ppb (6) 20.0 μg/m3 (19) 9.3 μg/m3 (39) 68.0
 
June 18, 2021, 11 p.m. N/A N/A 8.0 ppb (8) N/A N/A 5.0 ppb (8) 63.0 ppb (78) 0.48 ppb (6) 21.0 μg/m3 (20) 9.9 μg/m3 (42) 78.0
 
June 18, 2021, 10 p.m. N/A N/A 6.2 ppb (6) N/A N/A 2.0 ppb (3) 67.0 ppb (91) 0.45 ppb (6) 18.0 μg/m3 (17) 9.6 μg/m3 (40) 91.0
 
June 18, 2021, 9 p.m. N/A N/A 6.9 ppb (7) N/A N/A 2.0 ppb (3) 68.0 ppb (94) 0.45 ppb (6) 17.0 μg/m3 (16) 9.8 μg/m3 (41) 94.0
 
June 18, 2021, 8 p.m. N/A N/A 6.4 ppb (7) N/A N/A 2.0 ppb (3) 67.0 ppb (91) 0.43 ppb (5) 16.0 μg/m3 (15) 9.2 μg/m3 (39) 91.0
 
June 18, 2021, 7 p.m. N/A N/A 7.1 ppb (7) N/A N/A 1.0 ppb (2) 64.0 ppb (81) 0.42 ppb (5) 15.0 μg/m3 (14) 8.6 μg/m3 (36) 81.0
 
June 18, 2021, 6 p.m. N/A N/A 5.8 ppb (6) N/A N/A 0.0 ppb (0) 60.0 ppb (68) 0.41 ppb (5) 13.0 μg/m3 (13) 7.7 μg/m3 (33) 68.0
 
June 18, 2021, 5 p.m. N/A N/A 6.0 ppb (6) N/A N/A 0.0 ppb (0) 56.0 ppb (55) 0.42 ppb (5) 13.0 μg/m3 (13) 7.1 μg/m3 (30) 55.0
 
June 18, 2021, 4 p.m. N/A N/A 6.6 ppb (7) N/A N/A 1.0 ppb (2) 49.0 ppb (46) 0.44 ppb (5) 13.0 μg/m3 (13) 6.4 μg/m3 (27) 46.0
 
June 18, 2021, 3 p.m. N/A N/A 10.2 ppb (10) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.46 ppb (6) 14.0 μg/m3 (13) 5.9 μg/m3 (25) 36.0
 
June 18, 2021, 2 p.m. N/A N/A 8.5 ppb (9) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.44 ppb (5) 10.0 μg/m3 (10) 5.3 μg/m3 (23) 37.0
 
June 18, 2021, 1 p.m. N/A N/A 5.9 ppb (6) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.44 ppb (5) 9.0 μg/m3 (9) 4.5 μg/m3 (19) 39.0
 
June 18, 2021, noon N/A N/A 6.4 ppb (7) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.44 ppb (5) 9.0 μg/m3 (9) 4.4 μg/m3 (19) 37.0
 
June 18, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.43 ppb (5) 11.0 μg/m3 (11) 5.3 μg/m3 (23) 35.0
 
June 18, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.44 ppb (5) 19.0 μg/m3 (18) 8.3 μg/m3 (35) 35.0
 
June 18, 2021, 9 a.m. N/A N/A 10.3 ppb (10) N/A N/A 1.0 ppb (2) 39.0 ppb (37) 0.48 ppb (6) 23.0 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
June 18, 2021, 8 a.m. N/A N/A 8.2 ppb (8) N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A 22.0 μg/m3 (21) 8.3 μg/m3 (35) 37.0
 
June 18, 2021, 7 a.m. N/A N/A 9.3 ppb (9) N/A N/A 1.0 ppb (2) N/A 0.45 ppb (6) 23.0 μg/m3 (22) 8.8 μg/m3 (37) 37.0
 
June 18, 2021, 6 a.m. N/A N/A 8.3 ppb (8) N/A N/A N/A 47.0 ppb (44) 0.41 ppb (5) 27.0 μg/m3 (25) 7.9 μg/m3 (33) 44.0
 
June 18, 2021, 5 a.m. N/A N/A 8.0 ppb (8) N/A N/A 1.0 ppb (2) 52.0 ppb (49) 0.4 ppb (5) 24.0 μg/m3 (23) 7.2 μg/m3 (31) 49.0
 
June 18, 2021, 4 a.m. N/A N/A 6.6 ppb (7) N/A N/A 0.0 ppb (0) 57.0 ppb (58) 0.39 ppb (5) 25.0 μg/m3 (24) 7.2 μg/m3 (31) 58.0
 
June 18, 2021, 3 a.m. N/A N/A 7.2 ppb (7) N/A N/A 0.0 ppb (0) 58.0 ppb (61) 0.42 ppb (5) 24.0 μg/m3 (23) 7.5 μg/m3 (32) 61.0
 
June 18, 2021, 2 a.m. N/A N/A 10.3 ppb (10) N/A N/A 1.0 ppb (2) 53.0 ppb (50) 0.44 ppb (5) 25.0 μg/m3 (24) 7.6 μg/m3 (32) 50.0
 
June 18, 2021, 1 a.m. N/A N/A 7.7 ppb (8) N/A N/A 0.0 ppb (0) 57.0 ppb (58) 0.45 ppb (6) 22.0 μg/m3 (21) 6.8 μg/m3 (29) 58.0
 
June 18, 2021, midnight N/A N/A 8.5 ppb (9) N/A N/A 0.0 ppb (0) 60.0 ppb (68) 0.43 ppb (5) 21.0 μg/m3 (20) 5.9 μg/m3 (25) 68.0
 
June 17, 2021, 11 p.m. N/A N/A 5.5 ppb (6) N/A N/A 0.0 ppb (0) 64.0 ppb (81) 0.38 ppb (5) 18.0 μg/m3 (17) 5.5 μg/m3 (23) 81.0
 
June 17, 2021, 10 p.m. N/A N/A 5.2 ppb (5) N/A N/A 0.0 ppb (0) 62.0 ppb (74) 0.38 ppb (5) 16.0 μg/m3 (15) 5.6 μg/m3 (24) 74.0
 
June 17, 2021, 9 p.m. N/A N/A 5.5 ppb (6) N/A N/A 0.0 ppb (0) 62.0 ppb (74) 0.37 ppb (5) 20.0 μg/m3 (19) 5.8 μg/m3 (25) 74.0
 
June 17, 2021, 8 p.m. N/A N/A 5.6 ppb (6) N/A N/A 0.0 ppb (0) 64.0 ppb (81) 0.37 ppb (5) 22.0 μg/m3 (21) 6.1 μg/m3 (26) 81.0
 
June 17, 2021, 7 p.m. N/A N/A 5.2 ppb (5) N/A N/A 1.0 ppb (2) 62.0 ppb (74) 0.36 ppb (5) 17.0 μg/m3 (16) 5.8 μg/m3 (25) 74.0
 
June 17, 2021, 6 p.m. N/A N/A 5.4 ppb (6) N/A N/A 1.0 ppb (2) 59.0 ppb (65) 0.36 ppb (5) 20.0 μg/m3 (19) 5.1 μg/m3 (22) 65.0
 
June 17, 2021, 5 p.m. N/A N/A 5.8 ppb (6) N/A N/A 1.0 ppb (2) 55.0 ppb (51) 0.36 ppb (5) 23.0 μg/m3 (22) 5.4 μg/m3 (23) 51.0
 
June 17, 2021, 4 p.m. N/A N/A 4.5 ppb (5) N/A N/A 0.0 ppb (0) 53.0 ppb (50) 0.35 ppb (4) 23.0 μg/m3 (22) 5.5 μg/m3 (23) 50.0
 
June 17, 2021, 3 p.m. N/A N/A 4.5 ppb (5) N/A N/A 1.0 ppb (2) 47.0 ppb (44) 0.35 ppb (4) 21.0 μg/m3 (20) 5.7 μg/m3 (24) 44.0
 
June 17, 2021, 2 p.m. N/A N/A 8.9 ppb (9) N/A N/A 1.0 ppb (2) 36.0 ppb (34) 0.4 ppb (5) 28.0 μg/m3 (26) 6.7 μg/m3 (28) 34.0
 
June 17, 2021, 1 p.m. N/A N/A 35.4 ppb (34) N/A N/A 1.0 ppb (2) 19.0 ppb (18) 0.6 ppb (7) 36.0 μg/m3 (34) 10.5 μg/m3 (44) 44.0
 
June 17, 2021, noon N/A N/A 64.4 ppb (63) N/A N/A 2.0 ppb (3) 6.0 ppb (6) 0.86 ppb (11) 43.0 μg/m3 (40) 15.1 μg/m3 (58) 63.0
 
June 17, 2021, 11 a.m. N/A N/A 56.5 ppb (54) N/A N/A 1.0 ppb (2) 2.0 ppb (2) 0.8 ppb (10) 37.0 μg/m3 (35) 12.5 μg/m3 (52) 54.0
 
June 17, 2021, 10 a.m. N/A N/A 32.4 ppb (31) N/A N/A 0.0 ppb (0) 1.0 ppb (1) 0.61 ppb (7) 29.0 μg/m3 (27) 14.1 μg/m3 (56) 56.0
 
June 17, 2021, 9 a.m. N/A N/A 22.2 ppb (21) N/A N/A 0.0 ppb (0) 2.0 ppb (2) 0.53 ppb (6) 23.0 μg/m3 (22) 12.1 μg/m3 (51) 51.0
 
June 17, 2021, 8 a.m. N/A N/A 13.2 ppb (13) N/A N/A 0.0 ppb (0) 5.0 ppb (5) 0.47 ppb (6) 19.0 μg/m3 (18) 10.4 μg/m3 (44) 44.0
 
June 17, 2021, 7 a.m. N/A N/A 17.8 ppb (17) N/A N/A 1.0 ppb (2) 6.0 ppb (6) 0.52 ppb (6) 25.0 μg/m3 (24) 12.2 μg/m3 (52) 52.0
 
June 17, 2021, 6 a.m. N/A N/A 13.5 ppb (13) N/A N/A 1.0 ppb (2) 10.0 ppb (10) 0.49 ppb (6) 21.0 μg/m3 (20) 10.1 μg/m3 (43) 43.0
 
June 17, 2021, 5 a.m. N/A N/A 9.9 ppb (10) N/A N/A 0.0 ppb (0) 16.0 ppb (15) 0.43 ppb (5) 17.0 μg/m3 (16) 7.7 μg/m3 (33) 33.0
 
June 17, 2021, 4 a.m. N/A N/A 8.9 ppb (9) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.41 ppb (5) 15.0 μg/m3 (14) 7.2 μg/m3 (31) 31.0
 
June 17, 2021, 3 a.m. N/A N/A 9.3 ppb (9) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.41 ppb (5) 15.0 μg/m3 (14) 6.4 μg/m3 (27) 27.0
 
June 17, 2021, 2 a.m. N/A N/A 8.2 ppb (8) N/A N/A 1.0 ppb (2) 28.0 ppb (26) 0.42 ppb (5) 15.0 μg/m3 (14) 5.7 μg/m3 (24) 26.0
 
June 17, 2021, 1 a.m. N/A N/A 5.8 ppb (6) N/A N/A 1.0 ppb (2) 34.0 ppb (32) 0.4 ppb (5) 16.0 μg/m3 (15) 5.5 μg/m3 (23) 32.0
 
June 17, 2021, midnight N/A N/A 4.9 ppb (5) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.36 ppb (5) 14.0 μg/m3 (13) 4.7 μg/m3 (20) 39.0
 
June 16, 2021, 11 p.m. N/A N/A 4.7 ppb (5) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.35 ppb (4) 15.0 μg/m3 (14) 4.8 μg/m3 (20) 41.0
 
June 16, 2021, 10 p.m. N/A N/A 4.9 ppb (5) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.35 ppb (4) 20.0 μg/m3 (19) 5.0 μg/m3 (21) 41.0
 
June 16, 2021, 9 p.m. N/A N/A 4.8 ppb (5) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.34 ppb (4) 20.0 μg/m3 (19) 5.1 μg/m3 (22) 43.0
 
June 16, 2021, 8 p.m. N/A N/A 5.2 ppb (5) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.34 ppb (4) 15.0 μg/m3 (14) 4.8 μg/m3 (20) 45.0