ID: 165

AQSQID: 060570005

Site Name: Grass Valley

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

Updated: July 28, 2021, 8:53 p.m.

Location: Grass Valley (Litton Dr), CA

Reporting: True, Located: True

Current AQI: 42.0

Grass Valley (Litton Dr) CA, US: 39.234402, -121.055603

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 28, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
July 28, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 2.0 μg/m3 (9) 41.0
 
July 28, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
July 28, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 28, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 28, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
July 28, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 3.0 μg/m3 (13) 49.0
 
July 28, 2021, noon N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 3.0 μg/m3 (13) 48.0
 
July 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 0.0 μg/m3 (0) 49.0
 
July 28, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
July 28, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 6.0 μg/m3 (25) 55.0
 
July 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 5.0 μg/m3 (21) 55.0
 
July 28, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
July 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
July 28, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 28, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 12.0 μg/m3 (50) 68.0
 
July 28, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A N/A 6.0 μg/m3 (25) 87.0
 
July 28, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 8.0 μg/m3 (34) 97.0
 
July 28, 2021, midnight N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 4.0 μg/m3 (17) 81.0
 
July 27, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 5.0 μg/m3 (21) 65.0
 
July 27, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 5.0 μg/m3 (21) 71.0
 
July 27, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 7.0 μg/m3 (30) 78.0
 
July 27, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 9.0 μg/m3 (38) 65.0
 
July 27, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 6.0 μg/m3 (25) 50.0
 
July 27, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 6.0 μg/m3 (25) 50.0
 
July 27, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.0 μg/m3 (13) 47.0
 
July 27, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
July 27, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
July 27, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 1.0 μg/m3 (5) 38.0
 
July 27, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 1.0 μg/m3 (5) 44.0
 
July 27, 2021, noon N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.0 μg/m3 (17) 47.0
 
July 27, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 4.0 μg/m3 (17) 45.0
 
July 27, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 2.0 μg/m3 (9) 47.0
 
July 27, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
July 27, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 1.0 μg/m3 (5) 50.0
 
July 27, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
July 27, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 1.0 μg/m3 (5) 49.0
 
July 27, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 0.0 μg/m3 (0) 49.0
 
July 27, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 2.0 μg/m3 (9) 50.0
 
July 27, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 3.0 μg/m3 (13) 55.0
 
July 27, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 2.0 μg/m3 (9) 71.0
 
July 27, 2021, midnight N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 3.0 μg/m3 (13) 78.0
 
July 26, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 3.0 μg/m3 (13) 74.0
 
July 26, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 4.0 μg/m3 (17) 74.0
 
July 26, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 6.0 μg/m3 (25) 65.0
 
July 26, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 7.0 μg/m3 (30) 58.0
 
July 26, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 7.0 μg/m3 (30) 58.0
 
July 26, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 10.0 μg/m3 (42) 50.0
 
July 26, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 26, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 26, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 26, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 9.0 μg/m3 (38) 58.0
 
July 26, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 7.0 μg/m3 (30) 51.0
 
July 26, 2021, noon N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 4.0 μg/m3 (17) 58.0
 
July 26, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 5.0 μg/m3 (21) 65.0
 
July 26, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 6.0 μg/m3 (25) 68.0
 
July 26, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 5.0 μg/m3 (21) 71.0
 
July 26, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 3.0 μg/m3 (13) 65.0
 
July 26, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A N/A 51.0
 
July 26, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 7.0 μg/m3 (30) 45.0
 
July 26, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
July 26, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 26, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 9.0 μg/m3 (38) 65.0
 
July 26, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 9.0 μg/m3 (38) 74.0
 
July 26, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 5.0 μg/m3 (21) 74.0
 
July 26, 2021, midnight N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 5.0 μg/m3 (21) 71.0
 
July 25, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 8.0 μg/m3 (34) 71.0
 
July 25, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 6.0 μg/m3 (25) 68.0
 
July 25, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 8.0 μg/m3 (34) 65.0
 
July 25, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 9.0 μg/m3 (38) 65.0
 
July 25, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 10.0 μg/m3 (42) 58.0
 
July 25, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A N/A 8.0 μg/m3 (34) 61.0
 
July 25, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 8.0 μg/m3 (34) 55.0
 
July 25, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 7.0 μg/m3 (30) 65.0
 
July 25, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 8.0 μg/m3 (34) 68.0
 
July 25, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 8.0 μg/m3 (34) 81.0
 
July 25, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 6.0 μg/m3 (25) 78.0
 
July 25, 2021, noon N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 8.0 μg/m3 (34) 78.0
 
July 25, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 6.0 μg/m3 (25) 81.0
 
July 25, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 7.0 μg/m3 (30) 91.0
 
July 25, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 72.0 ppb (102) N/A N/A 10.0 μg/m3 (42) 102.0
 
July 25, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 72.0 ppb (102) N/A N/A 9.0 μg/m3 (38) 102.0
 
July 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (100) N/A N/A N/A 100.0
 
July 25, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 18.0 μg/m3 (64) 94.0
 
July 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 25, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 72.0 ppb (102) N/A N/A 9.0 μg/m3 (38) 102.0
 
July 25, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 72.0 ppb (102) N/A N/A 10.0 μg/m3 (42) 102.0
 
July 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (100) N/A N/A 14.0 μg/m3 (55) 100.0
 
July 25, 2021, midnight N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 8.0 μg/m3 (34) 94.0
 
July 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 7.0 μg/m3 (30) 97.0
 
July 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (100) N/A N/A 11.0 μg/m3 (46) 100.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 23.0 μg/m3 (74) 97.0
 
July 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A N/A 34.0 μg/m3 (98) 98.0
 
July 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A N/A 39.0 μg/m3 (110) 110.0
 
July 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 45.0 μg/m3 (125) 125.0
 
July 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 35.0 μg/m3 (100) 100.0
 
July 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 17.0 μg/m3 (62) 68.0
 
July 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 9.0 μg/m3 (38) 74.0
 
July 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A N/A 81.0
 
July 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 11.0 μg/m3 (46) 78.0
 
July 24, 2021, noon N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 11.0 μg/m3 (46) 78.0
 
July 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A N/A 11.0 μg/m3 (46) 87.0
 
July 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 7.0 μg/m3 (30) 94.0
 
July 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (100) N/A N/A 9.0 μg/m3 (38) 100.0
 
July 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 6.0 μg/m3 (25) 97.0
 
July 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (100) N/A N/A N/A 100.0
 
July 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A N/A 6.0 μg/m3 (25) 87.0
 
July 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 6.0 μg/m3 (25) 58.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 5.0 μg/m3 (21) 78.0
 
July 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 5.0 μg/m3 (21) 84.0
 
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 4.0 μg/m3 (17) 84.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 6.0 μg/m3 (25) 94.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 9.0 μg/m3 (38) 97.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (103) N/A N/A 27.0 μg/m3 (83) 103.0
 
July 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 74.0 ppb (103) N/A N/A 38.0 μg/m3 (108) 108.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 72.0 ppb (102) N/A N/A 43.0 μg/m3 (120) 120.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 16.0 μg/m3 (60) 81.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 21.0 μg/m3 (70) 70.0
 
July 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 5.0 μg/m3 (21) 71.0
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A N/A 71.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 4.0 μg/m3 (17) 49.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 4.0 μg/m3 (17) 51.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 5.0 μg/m3 (21) 65.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 7.0 μg/m3 (30) 91.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (103) N/A N/A 10.0 μg/m3 (42) 103.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (103) N/A N/A 6.0 μg/m3 (25) 103.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 75.0 ppb (104) N/A N/A 5.0 μg/m3 (21) 104.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 76.0 ppb (104) N/A N/A 6.0 μg/m3 (25) 104.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 84.0 ppb (108) N/A N/A 9.0 μg/m3 (38) 108.0
 
July 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 88.0 ppb (110) N/A N/A 11.0 μg/m3 (46) 110.0
 
July 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 91.0 ppb (112) N/A N/A 10.0 μg/m3 (42) 112.0
 
July 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 84.0 ppb (108) N/A N/A 8.0 μg/m3 (34) 108.0
 
July 23, 2021, midnight N/A N/A N/A N/A N/A N/A 78.0 ppb (105) N/A N/A 9.0 μg/m3 (38) 105.0
 
July 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 74.0 ppb (103) N/A N/A 6.0 μg/m3 (25) 103.0
 
July 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (101) N/A N/A 5.0 μg/m3 (21) 101.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 4.0 μg/m3 (17) 94.0
 
July 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 2.0 μg/m3 (9) 97.0
 
July 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (101) N/A N/A 4.0 μg/m3 (17) 101.0
 
July 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (101) N/A N/A 5.0 μg/m3 (21) 101.0
 
July 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 4.0 μg/m3 (17) 94.0
 
July 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 3.0 μg/m3 (13) 84.0
 
July 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 3.0 μg/m3 (13) 55.0
 
July 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 4.0 μg/m3 (17) 65.0
 
July 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 3.0 μg/m3 (13) 74.0
 
July 22, 2021, noon N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 3.0 μg/m3 (13) 84.0
 
July 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 4.0 μg/m3 (17) 91.0
 
July 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 5.0 μg/m3 (21) 97.0
 
July 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 6.0 μg/m3 (25) 94.0
 
July 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 5.0 μg/m3 (21) 94.0
 
July 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A N/A 94.0
 
July 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 4.0 μg/m3 (17) 81.0
 
July 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 4.0 μg/m3 (17) 97.0
 
July 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 4.0 μg/m3 (17) 91.0
 
July 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 5.0 μg/m3 (21) 94.0
 
July 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 1.0 μg/m3 (5) 97.0
 
July 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (100) N/A N/A 1.0 μg/m3 (5) 100.0
 
July 22, 2021, midnight N/A N/A N/A N/A N/A N/A 74.0 ppb (103) N/A N/A 1.0 μg/m3 (5) 103.0
 
July 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 76.0 ppb (104) N/A N/A 3.0 μg/m3 (13) 104.0
 
July 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (103) N/A N/A 4.0 μg/m3 (17) 103.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 0.0 μg/m3 (0) 91.0
 
July 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 0.0 μg/m3 (0) 81.0
 
July 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 1.0 μg/m3 (5) 68.0
 
July 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 1.0 μg/m3 (5) 65.0
 
July 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 1.0 μg/m3 (5) 55.0