AQSQID: 320311005

Site Name: Sparks

Location: Sparks (4th St), NV

Reporting: True, Located: True

Current AQI: 11.0

Sparks (4th St) NV, US: 39.54092, -119.746764

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 27, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 0.0 μg/m3 (0) 11.0
 
Jan. 27, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 24.0
 
Jan. 27, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.3 ppb (3) 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Jan. 27, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.3 ppb (3) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
Jan. 27, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.2 ppb (2) 15.0 μg/m3 (14) -2.0 μg/m3 (0) 22.0
 
Jan. 27, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 10.0 μg/m3 (9) -3.0 μg/m3 (0) 25.0
 
Jan. 27, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 9.0 μg/m3 (8) 0.0 μg/m3 (0) 24.0
 
Jan. 27, 2020, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.2 ppb (2) 7.0 μg/m3 (6) -2.0 μg/m3 (0) 28.0
 
Jan. 26, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.1 ppb (1) 5.0 μg/m3 (5) -2.0 μg/m3 (0) 29.0
 
Jan. 26, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 31.0
 
Jan. 26, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.1 ppb (1) 7.0 μg/m3 (6) 5.0 μg/m3 (21) 29.0
 
Jan. 26, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 28.0
 
Jan. 26, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.1 ppb (1) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 25.0
 
Jan. 26, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.1 ppb (1) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 23.0
 
Jan. 26, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Jan. 26, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.2 ppb (2) 7.0 μg/m3 (6) 0.0 μg/m3 (0) 18.0
 
Jan. 26, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.1 ppb (1) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 22.0
 
Jan. 26, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 21.0
 
Jan. 26, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.2 ppb (2) 2.0 μg/m3 (2) 5.0 μg/m3 (21) 21.0
 
Jan. 26, 2020, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.1 ppb (1) 4.0 μg/m3 (4) 5.0 μg/m3 (21) 21.0
 
Jan. 26, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.3 ppb (3) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Jan. 26, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.5 ppb (6) 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
Jan. 26, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.6 ppb (7) 22.0 μg/m3 (20) 16.0 μg/m3 (59) 59.0
 
Jan. 26, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.6 ppb (7) 31.0 μg/m3 (28) 18.0 μg/m3 (63) 63.0
 
Jan. 26, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 54.0 μg/m3 (49) 15.0 μg/m3 (56) 56.0
 
Jan. 26, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.6 ppb (7) 33.0 μg/m3 (30) 9.0 μg/m3 (38) 38.0
 
Jan. 26, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.5 ppb (6) 31.0 μg/m3 (28) 6.0 μg/m3 (25) 28.0
 
Jan. 26, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 9.0 μg/m3 (8) 1.0 μg/m3 (4) 18.0
 
Jan. 26, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 22.0
 
Jan. 26, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) 11.0 μg/m3 (10) 0.0 μg/m3 (0) 22.0
 
Jan. 26, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 10.0 μg/m3 (9) 0.0 μg/m3 (0) 24.0
 
Jan. 26, 2020, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.3 ppb (3) 14.0 μg/m3 (13) 1.0 μg/m3 (4) 24.0
 
Jan. 25, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.2 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 28.0
 
Jan. 25, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 31.0
 
Jan. 25, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 30.0
 
Jan. 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 28.0
 
Jan. 25, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Jan. 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.5 ppb (6) 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Jan. 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.6 ppb (7) 31.0 μg/m3 (28) 11.0 μg/m3 (46) 46.0
 
Jan. 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.4 ppb (4) 18.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
Jan. 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.6 ppb (7) 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Jan. 25, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.6 ppb (7) 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Jan. 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Jan. 25, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.4 ppb (4) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Jan. 25, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.4 ppb (4) 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Jan. 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
Jan. 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 24.0 μg/m3 (22) 5.0 μg/m3 (21) 22.0
 
Jan. 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 29.0 μg/m3 (26) 8.0 μg/m3 (33) 33.0
 
Jan. 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.6 ppb (7) 31.0 μg/m3 (28) 12.0 μg/m3 (50) 50.0
 
Jan. 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.6 ppb (7) 38.0 μg/m3 (35) 14.0 μg/m3 (54) 54.0
 
Jan. 25, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.6 ppb (7) 42.0 μg/m3 (38) 15.0 μg/m3 (56) 56.0
 
Jan. 25, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.3 ppb (3) 28.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Jan. 25, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.2 ppb (2) 11.0 μg/m3 (10) 0.0 μg/m3 (0) 21.0
 
Jan. 25, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 10.0 μg/m3 (9) 1.0 μg/m3 (4) 25.0
 
Jan. 25, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 18.0 μg/m3 (16) 2.0 μg/m3 (8) 25.0
 
Jan. 25, 2020, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 27.0
 
Jan. 24, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 29.0
 
Jan. 24, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.2 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 31.0
 
Jan. 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 32.0
 
Jan. 24, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 9.0 μg/m3 (8) 1.0 μg/m3 (4) 32.0
 
Jan. 24, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 18.0 μg/m3 (16) 0.0 μg/m3 (0) 32.0
 
Jan. 24, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.2 ppb (2) 21.0 μg/m3 (19) 0.0 μg/m3 (0) 30.0
 
Jan. 24, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 25.0
 
Jan. 24, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.3 ppb (3) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 14.0
 
Jan. 24, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.3 ppb (3) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 12.0
 
Jan. 24, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.3 ppb (3) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Jan. 24, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.2 ppb (2) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Jan. 24, 2020, noon N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.3 ppb (3) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
Jan. 24, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.4 ppb (4) 22.0 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
Jan. 24, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
Jan. 24, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 30.0 μg/m3 (27) 12.0 μg/m3 (50) 50.0
 
Jan. 24, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.6 ppb (7) 37.0 μg/m3 (34) 14.0 μg/m3 (54) 54.0
 
Jan. 24, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 44.0 μg/m3 (40) 16.0 μg/m3 (59) 59.0
 
Jan. 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 59.0 μg/m3 (52) 17.0 μg/m3 (61) 61.0
 
Jan. 24, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.2 ppb (13) 90.0 μg/m3 (68) 30.0 μg/m3 (88) 88.0
 
Jan. 24, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.2 ppb (13) 89.0 μg/m3 (67) 27.0 μg/m3 (82) 82.0
 
Jan. 24, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.3 ppb (14) 121.0 μg/m3 (83) 29.0 μg/m3 (86) 86.0
 
Jan. 24, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.1 ppb (12) 111.0 μg/m3 (78) 27.0 μg/m3 (82) 82.0
 
Jan. 24, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (11) 97.0 μg/m3 (71) 19.0 μg/m3 (65) 71.0
 
Jan. 24, 2020, midnight N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.7 ppb (8) 92.0 μg/m3 (68) 21.0 μg/m3 (69) 69.0
 
Jan. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.5 ppb (6) 74.0 μg/m3 (60) 9.0 μg/m3 (38) 60.0
 
Jan. 23, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.4 ppb (4) 52.0 μg/m3 (47) 14.0 μg/m3 (54) 54.0
 
Jan. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.4 ppb (4) 48.0 μg/m3 (44) 9.0 μg/m3 (38) 44.0
 
Jan. 23, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.4 ppb (4) 32.0 μg/m3 (29) 9.0 μg/m3 (38) 38.0
 
Jan. 23, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.5 ppb (6) 37.0 μg/m3 (34) 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.6 ppb (7) 48.0 μg/m3 (44) 14.0 μg/m3 (54) 54.0
 
Jan. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.8 ppb (9) 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
Jan. 23, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.9 ppb (10) 24.0 μg/m3 (22) 15.0 μg/m3 (56) 56.0
 
Jan. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.5 ppb (17) 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
Jan. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.3 ppb (14) 21.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
Jan. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (11) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Jan. 23, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (10) 20.0 μg/m3 (18) 13.0 μg/m3 (52) 52.0
 
Jan. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 15.0 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
Jan. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (10) 20.0 μg/m3 (18) 15.0 μg/m3 (56) 56.0
 
Jan. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (10) 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
Jan. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (11) 39.0 μg/m3 (35) 19.0 μg/m3 (65) 65.0
 
Jan. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (10) 36.0 μg/m3 (33) 16.0 μg/m3 (59) 59.0
 
Jan. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 34.0 μg/m3 (31) 7.0 μg/m3 (29) 31.0
 
Jan. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.5 ppb (6) 25.0 μg/m3 (23) 7.0 μg/m3 (29) 29.0
 
Jan. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.5 ppb (6) 29.0 μg/m3 (26) 6.0 μg/m3 (25) 26.0
 
Jan. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.2 ppb (2) 19.0 μg/m3 (17) 3.0 μg/m3 (12) 19.0
 
Jan. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 21.0 μg/m3 (19) 3.0 μg/m3 (12) 22.0
 
Jan. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 18.0 μg/m3 (16) 2.0 μg/m3 (8) 26.0
 
Jan. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 27.0
 
Jan. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 27.0
 
Jan. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.1 ppb (1) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 28.0
 
Jan. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 14.0 μg/m3 (13) 1.0 μg/m3 (4) 27.0
 
Jan. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 14.0 μg/m3 (13) -1.0 μg/m3 (0) 27.0
 
Jan. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.1 ppb (1) 8.0 μg/m3 (7) 0.0 μg/m3 (0) 28.0
 
Jan. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.3 ppb (3) 18.0 μg/m3 (16) 3.0 μg/m3 (12) 25.0
 
Jan. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 23.0 μg/m3 (21) 5.0 μg/m3 (21) 22.0
 
Jan. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 21.0 μg/m3 (19) 1.0 μg/m3 (4) 22.0
 
Jan. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 16.0 μg/m3 (15) 1.0 μg/m3 (4) 18.0
 
Jan. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) 13.0 μg/m3 (12) 0.0 μg/m3 (0) 20.0
 
Jan. 22, 2020, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.2 ppb (2) 18.0 μg/m3 (16) 0.0 μg/m3 (0) 16.0
 
Jan. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 22.0
 
Jan. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.1 ppb (1) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 23.0
 
Jan. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) 3.0 μg/m3 (3) -2.0 μg/m3 (0) 30.0
 
Jan. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) 6.0 μg/m3 (5) -3.0 μg/m3 (0) 27.0
 
Jan. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) 7.0 μg/m3 (6) -1.0 μg/m3 (0) 30.0
 
Jan. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 9.0 μg/m3 (8) 1.0 μg/m3 (4) 25.0
 
Jan. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) 17.0 μg/m3 (15) 1.0 μg/m3 (4) 20.0
 
Jan. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 12.0 μg/m3 (11) 1.0 μg/m3 (4) 24.0
 
Jan. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 15.0 μg/m3 (14) 1.0 μg/m3 (4) 26.0
 
Jan. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 24.0
 
Jan. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 24.0
 
Jan. 22, 2020, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 26.0
 
Jan. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 22.0 μg/m3 (20) -2.0 μg/m3 (0) 26.0
 
Jan. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.2 ppb (2) 23.0 μg/m3 (21) 0.0 μg/m3 (0) 28.0
 
Jan. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 18.0 μg/m3 (16) 1.0 μg/m3 (4) 28.0
 
Jan. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 31.0
 
Jan. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.2 ppb (2) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 31.0
 
Jan. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.2 ppb (2) 24.0 μg/m3 (22) 5.0 μg/m3 (21) 30.0
 
Jan. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.4 ppb (4) N/A N/A 15.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.5 ppb (6) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.9 ppb (10) 31.0 μg/m3 (28) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 33.0 μg/m3 (30) 7.0 μg/m3 (29) 30.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.5 ppb (6) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.4 ppb (4) 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.4 ppb (4) 22.0 μg/m3 (20) 5.0 μg/m3 (21) 21.0
 
Jan. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.3 ppb (3) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 21.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.4 ppb (4) 17.0 μg/m3 (15) 2.0 μg/m3 (8) 15.0
 
Jan. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 20.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.3 ppb (3) 22.0 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 25.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 31.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 15.0 μg/m3 (14) 1.0 μg/m3 (4) 27.0
 
Jan. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 23.0
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.2 ppb (2) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, midnight N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.4 ppb (4) 48.0 μg/m3 (44) 13.0 μg/m3 (52) 52.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.4 ppb (4) 40.0 μg/m3 (36) 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.3 ppb (3) 41.0 μg/m3 (37) 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.4 ppb (4) 48.0 μg/m3 (44) 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.3 ppb (3) 38.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.4 ppb (4) 26.0 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
Jan. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.6 ppb (7) 49.0 μg/m3 (45) 17.0 μg/m3 (61) 61.0
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.9 ppb (10) 62.0 μg/m3 (54) 16.0 μg/m3 (59) 59.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 68.0 μg/m3 (56) 14.0 μg/m3 (54) 56.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (10) 38.0 μg/m3 (35) 14.0 μg/m3 (54) 54.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 30.0 μg/m3 (27) 9.0 μg/m3 (38) 38.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 35.0 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 25.0 μg/m3 (23) 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.6 ppb (7) 24.0 μg/m3 (22) 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 37.0 μg/m3 (34) 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 41.0 μg/m3 (37) 17.0 μg/m3 (61) 61.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 57.0 μg/m3 (51) 26.0 μg/m3 (80) 80.0