ID: 187

AQSQID: 060670012

Site Name: Folsom

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

Updated: Aug. 5, 2021, 8:55 p.m.

Location: Folsom (Natoma St), CA

Reporting: True, Located: True

Current AQI: 33.0

Folsom (Natoma St) CA, US: 38.683304, -121.164457

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Aug. 5, 2021, 7 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 35.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
Aug. 5, 2021, 6 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 11.0 μg/m3 (46) 46.0
 
Aug. 5, 2021, 5 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 12.0 μg/m3 (50) 50.0
 
Aug. 5, 2021, 4 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 25.0 ppb (24) N/A N/A 7.0 μg/m3 (30) 30.0
 
Aug. 5, 2021, 3 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
Aug. 5, 2021, 2 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
Aug. 5, 2021, 1 p.m. 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 16.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
Aug. 5, 2021, noon 4.0 ppb (4) N/A N/A 2.0 ppb (2) N/A N/A 15.0 ppb (14) N/A N/A 7.0 μg/m3 (30) 30.0
 
Aug. 5, 2021, 11 a.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
 
Aug. 5, 2021, 10 a.m. 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 18.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
Aug. 5, 2021, 9 a.m. 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 20.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
Aug. 5, 2021, 8 a.m. 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) N/A N/A 7.0 μg/m3 (30) 30.0
 
Aug. 5, 2021, 7 a.m. 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A N/A 7.0 μg/m3 (30) 30.0
 
Aug. 5, 2021, 6 a.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 24.0 ppb (23) N/A N/A 5.0 μg/m3 (21) 23.0
 
Aug. 5, 2021, 5 a.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A N/A 2.0 μg/m3 (9) 28.0
 
Aug. 5, 2021, 4 a.m. 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A N/A -2.0 μg/m3 (0) 30.0
 
Aug. 5, 2021, 3 a.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A -1.0 μg/m3 (0) 36.0
 
Aug. 5, 2021, 2 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 3.0 μg/m3 (13) 40.0
 
Aug. 5, 2021, 1 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 51.0 ppb (48) N/A N/A 6.0 μg/m3 (25) 48.0
 
Aug. 5, 2021, midnight 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 57.0 ppb (58) N/A N/A 7.0 μg/m3 (30) 58.0
 
Aug. 4, 2021, 11 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 60.0 ppb (68) N/A N/A 7.0 μg/m3 (30) 68.0
 
Aug. 4, 2021, 10 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 63.0 ppb (78) N/A N/A 8.0 μg/m3 (34) 78.0
 
Aug. 4, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Aug. 4, 2021, 8 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 54.0 ppb (50) N/A N/A 8.0 μg/m3 (34) 50.0
 
Aug. 4, 2021, 7 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A N/A 4.0 μg/m3 (17) 45.0
 
Aug. 4, 2021, 6 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 0.0 μg/m3 (0) 40.0
 
Aug. 4, 2021, 5 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 1.0 μg/m3 (5) 35.0
 
Aug. 4, 2021, 4 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
Aug. 4, 2021, 3 p.m. 4.0 ppb (4) N/A N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A N/A 17.0 μg/m3 (62) 62.0
 
Aug. 4, 2021, 2 p.m. 4.0 ppb (4) N/A N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
Aug. 4, 2021, 1 p.m. 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A 8.0 μg/m3 (34) 34.0
 
Aug. 4, 2021, noon 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
Aug. 4, 2021, 11 a.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A N/A 7.0 μg/m3 (30) 30.0
 
Aug. 4, 2021, 10 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 12.0 μg/m3 (50) 50.0
 
Aug. 4, 2021, 9 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
Aug. 4, 2021, 8 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A N/A -1.0 μg/m3 (0) 33.0
 
Aug. 4, 2021, 7 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
Aug. 4, 2021, 6 a.m. 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
Aug. 4, 2021, 5 a.m. 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 1.0 μg/m3 (5) 39.0
 
Aug. 4, 2021, 4 a.m. 5.0 ppb (5) N/A N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) N/A N/A -1.0 μg/m3 (0) 41.0
 
Aug. 4, 2021, 3 a.m. 3.0 ppb (3) N/A N/A 3.0 ppb (3) N/A N/A 60.0 ppb (68) N/A N/A 1.0 μg/m3 (5) 68.0
 
Aug. 4, 2021, 2 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 76.0 ppb (104) N/A N/A 2.0 μg/m3 (9) 104.0
 
Aug. 4, 2021, 1 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 77.0 ppb (105) N/A N/A 4.0 μg/m3 (17) 105.0
 
Aug. 4, 2021, midnight 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 79.0 ppb (106) N/A N/A 6.0 μg/m3 (25) 106.0
 
Aug. 3, 2021, 11 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 81.0 ppb (107) N/A N/A 7.0 μg/m3 (30) 107.0
 
Aug. 3, 2021, 10 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 82.0 ppb (107) N/A N/A 10.0 μg/m3 (42) 107.0
 
Aug. 3, 2021, 9 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 85.0 ppb (109) N/A N/A 6.0 μg/m3 (25) 109.0
 
Aug. 3, 2021, 8 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 80.0 ppb (106) N/A N/A 3.0 μg/m3 (13) 106.0
 
Aug. 3, 2021, 7 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 67.0 ppb (91) N/A N/A 4.0 μg/m3 (17) 91.0
 
Aug. 3, 2021, 6 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 53.0 ppb (50) N/A N/A 4.0 μg/m3 (17) 50.0
 
Aug. 3, 2021, 5 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 4.0 μg/m3 (17) 40.0
 
Aug. 3, 2021, 4 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 8.0 μg/m3 (34) 36.0
 
Aug. 3, 2021, 3 p.m. 4.0 ppb (4) N/A N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A N/A 9.0 μg/m3 (38) 38.0
 
Aug. 3, 2021, 2 p.m. 4.0 ppb (4) N/A N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
Aug. 3, 2021, 1 p.m. 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A N/A 3.0 μg/m3 (13) 28.0
 
Aug. 3, 2021, noon 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
Aug. 3, 2021, 11 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
 
Aug. 3, 2021, 10 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
Aug. 3, 2021, 9 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Aug. 3, 2021, 8 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
Aug. 3, 2021, 7 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 8.0 μg/m3 (34) 34.0
 
Aug. 3, 2021, 6 a.m. 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A N/A 7.0 μg/m3 (30) 35.0
 
Aug. 3, 2021, 5 a.m. 4.0 ppb (4) N/A N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) N/A N/A 3.0 μg/m3 (13) 37.0
 
Aug. 3, 2021, 4 a.m. 3.0 ppb (3) N/A N/A 3.0 ppb (3) N/A N/A 48.0 ppb (45) N/A N/A 2.0 μg/m3 (9) 45.0
 
Aug. 3, 2021, 3 a.m. 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 58.0 ppb (61) N/A N/A 2.0 μg/m3 (9) 61.0
 
Aug. 3, 2021, 2 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 69.0 ppb (97) N/A N/A 2.0 μg/m3 (9) 97.0
 
Aug. 3, 2021, 1 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 73.0 ppb (103) N/A N/A 3.0 μg/m3 (13) 103.0
 
Aug. 3, 2021, midnight 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 73.0 ppb (103) N/A N/A 3.0 μg/m3 (13) 103.0
 
Aug. 2, 2021, 11 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 71.0 ppb (101) N/A N/A 2.0 μg/m3 (9) 101.0
 
Aug. 2, 2021, 10 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 67.0 ppb (91) N/A N/A 3.0 μg/m3 (13) 91.0
 
Aug. 2, 2021, 9 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 66.0 ppb (87) N/A N/A 4.0 μg/m3 (17) 87.0
 
Aug. 2, 2021, 8 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 64.0 ppb (81) N/A N/A 6.0 μg/m3 (25) 81.0
 
Aug. 2, 2021, 7 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 60.0 ppb (68) N/A N/A 10.0 μg/m3 (42) 68.0
 
Aug. 2, 2021, 6 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 12.0 μg/m3 (50) 50.0
 
Aug. 2, 2021, 5 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 12.0 μg/m3 (50) 50.0
 
Aug. 2, 2021, 4 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A N/A 18.0 μg/m3 (64) 64.0
 
Aug. 2, 2021, 3 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 2.0 μg/m3 (9) 27.0
 
Aug. 2, 2021, 2 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 27.0 ppb (25) N/A N/A -2.0 μg/m3 (0) 25.0
 
Aug. 2, 2021, 1 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 23.0 ppb (22) N/A N/A -4.0 μg/m3 (0) 22.0
 
Aug. 2, 2021, noon 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 23.0 ppb (22) N/A N/A -2.0 μg/m3 (0) 22.0
 
Aug. 2, 2021, 11 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 23.0 ppb (22) N/A N/A -1.0 μg/m3 (0) 22.0
 
Aug. 2, 2021, 10 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 25.0 ppb (24) N/A N/A 0.0 μg/m3 (0) 24.0
 
Aug. 2, 2021, 9 a.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 2.0 μg/m3 (9) 26.0
 
Aug. 2, 2021, 8 a.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
Aug. 2, 2021, 7 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 27.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
Aug. 2, 2021, 6 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 9.0 μg/m3 (38) 38.0
 
Aug. 2, 2021, 5 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 30.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Aug. 2, 2021, 4 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Aug. 2, 2021, 3 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A N/A 3.0 μg/m3 (13) 37.0
 
Aug. 2, 2021, 2 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
Aug. 2, 2021, 1 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 49.0 ppb (46) N/A N/A 4.0 μg/m3 (17) 46.0
 
Aug. 2, 2021, midnight 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 54.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
Aug. 1, 2021, 11 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 59.0 ppb (65) N/A N/A 4.0 μg/m3 (17) 65.0
 
Aug. 1, 2021, 10 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 59.0 ppb (65) N/A N/A 7.0 μg/m3 (30) 65.0
 
Aug. 1, 2021, 9 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 61.0 ppb (71) N/A N/A 5.0 μg/m3 (21) 71.0
 
Aug. 1, 2021, 8 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 2.0 μg/m3 (9) 49.0
 
Aug. 1, 2021, 7 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 1.0 μg/m3 (5) 41.0
 
Aug. 1, 2021, 6 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 40.0 ppb (38) N/A N/A -1.0 μg/m3 (0) 38.0
 
Aug. 1, 2021, 5 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
Aug. 1, 2021, 4 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) N/A N/A 8.0 μg/m3 (34) 34.0
 
Aug. 1, 2021, 3 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 7.0 μg/m3 (30) 30.0
 
Aug. 1, 2021, 2 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 2.0 μg/m3 (9) 27.0
 
Aug. 1, 2021, 1 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
Aug. 1, 2021, noon 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 10.0 μg/m3 (42) 42.0
 
Aug. 1, 2021, 11 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
 
Aug. 1, 2021, 10 a.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 40.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
Aug. 1, 2021, 9 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 39.0 ppb (37) N/A N/A 7.0 μg/m3 (30) 37.0
 
Aug. 1, 2021, 8 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A N/A 8.0 μg/m3 (34) 35.0
 
Aug. 1, 2021, 7 a.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 40.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
Aug. 1, 2021, 6 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 6.0 μg/m3 (25) 40.0
 
Aug. 1, 2021, 5 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 42.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
Aug. 1, 2021, 4 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 1.0 μg/m3 (5) 37.0
 
Aug. 1, 2021, 3 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
Aug. 1, 2021, 2 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 1.0 μg/m3 (5) 41.0
 
Aug. 1, 2021, 1 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 1.0 μg/m3 (5) 44.0
 
Aug. 1, 2021, midnight 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 0.0 μg/m3 (0) 44.0
 
July 31, 2021, 11 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 2.0 μg/m3 (9) 42.0
 
July 31, 2021, 10 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
July 31, 2021, 9 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 48.0 ppb (45) N/A N/A 5.0 μg/m3 (21) 45.0
 
July 31, 2021, 8 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 48.0 ppb (45) N/A N/A 2.0 μg/m3 (9) 45.0
 
July 31, 2021, 7 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 48.0 ppb (45) N/A N/A 2.0 μg/m3 (9) 45.0
 
July 31, 2021, 6 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 5.0 μg/m3 (21) 44.0
 
July 31, 2021, 5 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 7.0 μg/m3 (30) 35.0
 
July 31, 2021, 4 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A N/A 7.0 μg/m3 (30) 31.0
 
July 31, 2021, 3 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 31, 2021, 2 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) N/A N/A 6.0 μg/m3 (25) 26.0
 
July 31, 2021, 1 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 27.0 ppb (25) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 31, 2021, noon 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 31, 2021, 11 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 30.0 ppb (28) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 31, 2021, 10 a.m. 1.0 ppb (1) N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 31, 2021, 9 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 31, 2021, 8 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
July 31, 2021, 7 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 31, 2021, 6 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
July 31, 2021, 5 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A N/A 3.0 μg/m3 (13) 31.0
 
July 31, 2021, 4 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
July 31, 2021, 3 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
July 31, 2021, 2 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 6.0 μg/m3 (25) 46.0
 
July 31, 2021, 1 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 59.0 ppb (65) N/A N/A 7.0 μg/m3 (30) 65.0
 
July 31, 2021, midnight 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 66.0 ppb (87) N/A N/A 6.0 μg/m3 (25) 87.0
 
July 30, 2021, 11 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 69.0 ppb (97) N/A N/A 5.0 μg/m3 (21) 97.0
 
July 30, 2021, 10 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 64.0 ppb (81) N/A N/A 8.0 μg/m3 (34) 81.0
 
July 30, 2021, 9 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 62.0 ppb (74) N/A N/A 10.0 μg/m3 (42) 74.0
 
July 30, 2021, 8 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 59.0 ppb (65) N/A N/A 8.0 μg/m3 (34) 65.0
 
July 30, 2021, 7 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 52.0 ppb (49) N/A N/A 8.0 μg/m3 (34) 49.0
 
July 30, 2021, 6 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 8.0 μg/m3 (34) 40.0
 
July 30, 2021, 5 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 8.0 μg/m3 (34) 38.0
 
July 30, 2021, 4 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 30, 2021, 3 p.m. 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) N/A N/A 20.0 μg/m3 (68) 68.0
 
July 30, 2021, 2 p.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 30, 2021, 1 p.m. 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 30, 2021, noon 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 30, 2021, 11 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 30, 2021, 10 a.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 7.0 μg/m3 (30) 32.0
 
July 30, 2021, 9 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 30, 2021, 8 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 30, 2021, 7 a.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 30, 2021, 6 a.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 8.0 μg/m3 (34) 37.0
 
July 30, 2021, 5 a.m. 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
July 30, 2021, 4 a.m. 3.0 ppb (3) N/A N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
July 30, 2021, 3 a.m. 3.0 ppb (3) N/A N/A 3.0 ppb (3) N/A N/A 47.0 ppb (44) N/A N/A 6.0 μg/m3 (25) 44.0
 
July 30, 2021, 2 a.m. 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A 55.0 ppb (51) N/A N/A 5.0 μg/m3 (21) 51.0
 
July 30, 2021, 1 a.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 69.0 ppb (97) N/A N/A 10.0 μg/m3 (42) 97.0
 
July 30, 2021, midnight 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 73.0 ppb (103) N/A N/A 11.0 μg/m3 (46) 103.0
 
July 29, 2021, 11 p.m. 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A N/A 71.0 ppb (101) N/A N/A 10.0 μg/m3 (42) 101.0
 
July 29, 2021, 10 p.m. 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 82.0 ppb (107) N/A N/A 12.0 μg/m3 (50) 107.0
 
July 29, 2021, 9 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 84.0 ppb (108) N/A N/A 23.0 μg/m3 (74) 108.0
 
July 29, 2021, 8 p.m. 1.0 ppb (1) N/A N/A 1.0 ppb (1) N/A N/A 71.0 ppb (101) N/A N/A 16.0 μg/m3 (60) 101.0