ID: 2646

AQSQID: 490471004

Site Name: Vernal #4

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

Updated: Jan. 25, 2021, 1:32 a.m.

Location: Vernal (1700 W St), UT

Reporting: True, Located: True

Current AQI: 37.0

Vernal (1700 W St) UT, US: 40.464722, -109.56083

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 25, 2021, midnight 17.3 ppb (17) 1.0 ppb (1) N/A 16.0 ppb (16) N/A N/A 33.0 ppb (31) N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 24, 2021, 11 p.m. 7.5 ppb (8) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (42) N/A N/A 6.6 μg/m3 (28) 42.0
 
Jan. 24, 2021, 10 p.m. 7.7 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 47.0 ppb (44) N/A N/A 5.7 μg/m3 (24) 44.0
 
Jan. 24, 2021, 9 p.m. 6.3 ppb (6) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (45) N/A N/A 5.0 μg/m3 (21) 45.0
 
Jan. 24, 2021, 8 p.m. 4.5 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (45) N/A N/A 6.0 μg/m3 (25) 45.0
 
Jan. 24, 2021, 7 p.m. 7.8 ppb (8) 2.6 ppb (3) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) N/A N/A 8.7 μg/m3 (37) 40.0
 
Jan. 24, 2021, 6 p.m. 10.7 ppb (11) 4.3 ppb (5) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (37) N/A N/A 7.2 μg/m3 (31) 37.0
 
Jan. 24, 2021, 5 p.m. 17.1 ppb (17) 7.9 ppb (8) N/A 9.0 ppb (9) N/A N/A 35.0 ppb (33) N/A N/A 8.6 μg/m3 (36) 36.0
 
Jan. 24, 2021, 4 p.m. 12.3 ppb (12) 5.2 ppb (5) N/A 7.0 ppb (7) N/A N/A 31.0 ppb (29) N/A N/A 3.3 μg/m3 (14) 29.0
 
Jan. 24, 2021, 3 p.m. 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 2.2 μg/m3 (10) 32.0
 
Jan. 24, 2021, 2 p.m. 6.3 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (26) N/A N/A 2.2 μg/m3 (10) 26.0
 
Jan. 24, 2021, 1 p.m. 4.1 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 1.9 μg/m3 (8) 31.0
 
Jan. 24, 2021, noon 4.6 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) N/A N/A 2.4 μg/m3 (10) 34.0
 
Jan. 24, 2021, 11 a.m. 5.3 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.2 μg/m3 (10) 10.0
 
Jan. 24, 2021, 10 a.m. 5.8 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 2.0 μg/m3 (9) 31.0
 
Jan. 24, 2021, 9 a.m. 5.5 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 2.7 μg/m3 (12) 31.0
 
Jan. 24, 2021, 8 a.m. 4.5 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 2.9 μg/m3 (13) 32.0
 
Jan. 24, 2021, 7 a.m. 5.4 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 5.1 μg/m3 (22) 31.0
 
Jan. 24, 2021, 6 a.m. 6.0 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 5.2 μg/m3 (22) 31.0
 
Jan. 24, 2021, 5 a.m. 7.0 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) N/A N/A 7.4 μg/m3 (31) 31.0
 
Jan. 24, 2021, 4 a.m. 7.6 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) N/A N/A 8.1 μg/m3 (34) 34.0
 
Jan. 24, 2021, 3 a.m. 13.7 ppb (13) 0.8 ppb (1) N/A 13.0 ppb (13) N/A N/A 30.0 ppb (28) N/A N/A 15.8 μg/m3 (59) 59.0
 
Jan. 24, 2021, 2 a.m. 15.7 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A 37.0 ppb (35) N/A N/A 22.5 μg/m3 (73) 73.0
 
Jan. 24, 2021, 1 a.m. 17.1 ppb (17) 0.5 ppb (1) N/A 17.0 ppb (17) N/A N/A 40.0 ppb (38) N/A N/A 21.4 μg/m3 (71) 71.0
 
Jan. 24, 2021, midnight 11.6 ppb (11) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 49.0 ppb (46) N/A N/A 16.7 μg/m3 (61) 61.0
 
Jan. 23, 2021, 11 p.m. 8.6 ppb (9) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 53.0 ppb (50) N/A N/A 17.1 μg/m3 (62) 62.0
 
Jan. 23, 2021, 10 p.m. 10.1 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A 57.0 ppb (58) N/A N/A 19.3 μg/m3 (67) 67.0
 
Jan. 23, 2021, 9 p.m. 8.5 ppb (9) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 51.0 ppb (48) N/A N/A 15.2 μg/m3 (58) 58.0
 
Jan. 23, 2021, 8 p.m. 8.0 ppb (8) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (43) N/A N/A 10.5 μg/m3 (44) 44.0
 
Jan. 23, 2021, 7 p.m. 8.8 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A 42.0 ppb (39) N/A N/A 10.2 μg/m3 (43) 43.0
 
Jan. 23, 2021, 6 p.m. 13.0 ppb (13) 4.4 ppb (5) N/A 9.0 ppb (9) N/A N/A 38.0 ppb (36) N/A N/A 9.9 μg/m3 (42) 42.0
 
Jan. 23, 2021, 5 p.m. 11.1 ppb (11) 2.1 ppb (2) N/A 9.0 ppb (9) N/A N/A 35.0 ppb (33) N/A N/A 15.6 μg/m3 (59) 59.0
 
Jan. 23, 2021, 4 p.m. 15.3 ppb (15) 2.5 ppb (3) N/A 13.0 ppb (13) N/A N/A 36.0 ppb (34) N/A N/A 18.1 μg/m3 (64) 64.0
 
Jan. 23, 2021, 3 p.m. 11.2 ppb (11) 0.7 ppb (1) N/A 10.0 ppb (10) N/A N/A 40.0 ppb (38) N/A N/A 19.4 μg/m3 (67) 67.0
 
Jan. 23, 2021, 2 p.m. 10.8 ppb (11) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 40.0 ppb (38) N/A N/A 17.3 μg/m3 (62) 62.0
 
Jan. 23, 2021, 1 p.m. 11.2 ppb (11) 0.4 ppb (1) N/A 11.0 ppb (11) N/A N/A 39.0 ppb (37) N/A N/A 18.5 μg/m3 (65) 65.0
 
Jan. 23, 2021, noon 12.2 ppb (12) 0.5 ppb (1) N/A 12.0 ppb (12) N/A N/A 36.0 ppb (34) N/A N/A 18.3 μg/m3 (65) 65.0
 
Jan. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 27.1 μg/m3 (83) 83.0
 
Jan. 23, 2021, 10 a.m. 11.4 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) N/A N/A 14.3 μg/m3 (56) 56.0
 
Jan. 23, 2021, 9 a.m. 7.4 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 23.0 ppb (22) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2021, 8 a.m. 13.8 ppb (14) 0.9 ppb (1) N/A 13.0 ppb (13) N/A N/A 21.0 ppb (20) N/A N/A 17.4 μg/m3 (63) 63.0
 
Jan. 23, 2021, 7 a.m. 19.4 ppb (19) 1.6 ppb (2) N/A 18.0 ppb (17) N/A N/A 20.0 ppb (19) N/A N/A 27.4 μg/m3 (84) 84.0
 
Jan. 23, 2021, 6 a.m. 13.7 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 26.0 ppb (25) N/A N/A 34.5 μg/m3 (99) 99.0
 
Jan. 23, 2021, 5 a.m. 16.1 ppb (16) 0.8 ppb (1) N/A 15.0 ppb (15) N/A N/A 25.0 ppb (24) N/A N/A 29.1 μg/m3 (87) 87.0
 
Jan. 23, 2021, 4 a.m. 15.0 ppb (15) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 34.0 ppb (32) N/A N/A 20.2 μg/m3 (69) 69.0
 
Jan. 23, 2021, 3 a.m. 11.7 ppb (12) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 43.0 ppb (40) N/A N/A 17.7 μg/m3 (63) 63.0
 
Jan. 23, 2021, 2 a.m. 12.4 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 44.0 ppb (41) N/A N/A 17.6 μg/m3 (63) 63.0
 
Jan. 23, 2021, 1 a.m. 19.8 ppb (19) 0.8 ppb (1) N/A 19.0 ppb (18) N/A N/A 38.0 ppb (36) N/A N/A 15.7 μg/m3 (59) 59.0
 
Jan. 23, 2021, midnight 26.5 ppb (25) 2.2 ppb (3) N/A 24.0 ppb (23) N/A N/A 27.0 ppb (25) N/A N/A 21.0 μg/m3 (70) 70.0
 
Jan. 22, 2021, 11 p.m. 13.3 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 42.0 ppb (39) N/A N/A 26.9 μg/m3 (83) 83.0
 
Jan. 22, 2021, 10 p.m. 14.6 ppb (14) 1.7 ppb (2) N/A 13.0 ppb (13) N/A N/A 45.0 ppb (42) N/A N/A 17.1 μg/m3 (62) 62.0
 
Jan. 22, 2021, 9 p.m. 13.8 ppb (14) 2.1 ppb (2) N/A 12.0 ppb (12) N/A N/A 44.0 ppb (41) N/A N/A 17.6 μg/m3 (63) 63.0
 
Jan. 22, 2021, 8 p.m. 19.9 ppb (19) 4.2 ppb (4) N/A 16.0 ppb (16) N/A N/A 39.0 ppb (37) N/A N/A 17.0 μg/m3 (62) 62.0
 
Jan. 22, 2021, 7 p.m. 23.7 ppb (23) 8.4 ppb (8) N/A 15.0 ppb (15) N/A N/A 32.0 ppb (30) N/A N/A 16.4 μg/m3 (61) 61.0
 
Jan. 22, 2021, 6 p.m. 21.4 ppb (21) 6.3 ppb (6) N/A 15.0 ppb (15) N/A N/A 29.0 ppb (27) N/A N/A 18.3 μg/m3 (65) 65.0
 
Jan. 22, 2021, 5 p.m. 21.3 ppb (21) 5.1 ppb (5) N/A 16.0 ppb (16) N/A N/A 28.0 ppb (26) N/A N/A 16.7 μg/m3 (61) 61.0
 
Jan. 22, 2021, 4 p.m. 22.2 ppb (21) 5.5 ppb (6) N/A 17.0 ppb (17) N/A N/A 23.0 ppb (22) N/A N/A 16.7 μg/m3 (61) 61.0
 
Jan. 22, 2021, 3 p.m. 21.5 ppb (21) 5.8 ppb (6) N/A 16.0 ppb (16) N/A N/A 10.0 ppb (10) N/A N/A 15.5 μg/m3 (59) 59.0
 
Jan. 22, 2021, 2 p.m. 27.3 ppb (26) 5.6 ppb (6) N/A 22.0 ppb (21) N/A N/A 6.0 ppb (6) N/A N/A 5.0 μg/m3 (21) 26.0
 
Jan. 22, 2021, 1 p.m. 23.3 ppb (22) 4.5 ppb (5) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (9) N/A N/A 10.7 μg/m3 (45) 45.0
 
Jan. 22, 2021, noon 20.5 ppb (20) 1.4 ppb (2) N/A 19.0 ppb (18) N/A N/A 13.0 ppb (13) N/A N/A 12.4 μg/m3 (52) 52.0
 
Jan. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 7.4 μg/m3 (31) 31.0
 
Jan. 22, 2021, 10 a.m. 8.0 ppb (8) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) N/A N/A 7.7 μg/m3 (33) 33.0
 
Jan. 22, 2021, 9 a.m. 8.8 ppb (9) 0.9 ppb (1) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 22, 2021, 8 a.m. 10.1 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) N/A N/A 9.3 μg/m3 (39) 39.0
 
Jan. 22, 2021, 7 a.m. 13.5 ppb (13) 1.0 ppb (1) N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) N/A N/A 13.6 μg/m3 (55) 55.0
 
Jan. 22, 2021, 6 a.m. 15.5 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (15) N/A N/A 17.0 ppb (16) N/A N/A 14.2 μg/m3 (56) 56.0
 
Jan. 22, 2021, 5 a.m. 14.4 ppb (14) 1.4 ppb (2) N/A 13.0 ppb (13) N/A N/A 15.0 ppb (14) N/A N/A 24.1 μg/m3 (77) 77.0
 
Jan. 22, 2021, 4 a.m. 17.7 ppb (17) 1.9 ppb (2) N/A 16.0 ppb (16) N/A N/A 15.0 ppb (14) N/A N/A 23.5 μg/m3 (75) 75.0
 
Jan. 22, 2021, 3 a.m. 19.3 ppb (19) 1.3 ppb (2) N/A 18.0 ppb (17) N/A N/A 15.0 ppb (14) N/A N/A 17.7 μg/m3 (63) 63.0
 
Jan. 22, 2021, 2 a.m. 19.0 ppb (18) 1.2 ppb (2) N/A 18.0 ppb (17) N/A N/A 15.0 ppb (14) N/A N/A 15.5 μg/m3 (59) 59.0
 
Jan. 22, 2021, 1 a.m. 15.1 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A 22.0 ppb (21) N/A N/A 10.6 μg/m3 (45) 45.0
 
Jan. 22, 2021, midnight 29.1 ppb (28) 4.4 ppb (5) N/A 25.0 ppb (24) N/A N/A 22.0 ppb (21) N/A N/A 13.4 μg/m3 (54) 54.0
 
Jan. 21, 2021, 11 p.m. 10.6 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A 39.0 ppb (37) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2021, 10 p.m. 12.9 ppb (13) 2.8 ppb (3) N/A 10.0 ppb (10) N/A N/A 38.0 ppb (36) N/A N/A 6.1 μg/m3 (26) 36.0
 
Jan. 21, 2021, 9 p.m. 13.7 ppb (13) 4.0 ppb (4) N/A 10.0 ppb (10) N/A N/A 37.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
Jan. 21, 2021, 8 p.m. 14.1 ppb (14) 4.0 ppb (4) N/A 10.0 ppb (10) N/A N/A 35.0 ppb (33) N/A N/A 6.8 μg/m3 (29) 33.0
 
Jan. 21, 2021, 7 p.m. 19.7 ppb (19) 8.1 ppb (8) N/A 12.0 ppb (12) N/A N/A 31.0 ppb (29) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 21, 2021, 6 p.m. 33.9 ppb (32) 14.6 ppb (14) N/A 19.0 ppb (18) N/A N/A 24.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2021, 5 p.m. 22.8 ppb (22) 8.6 ppb (9) N/A 14.0 ppb (14) N/A N/A 25.0 ppb (24) N/A N/A 7.2 μg/m3 (31) 31.0
 
Jan. 21, 2021, 4 p.m. 12.5 ppb (12) 3.5 ppb (4) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) N/A N/A 10.3 μg/m3 (43) 43.0
 
Jan. 21, 2021, 3 p.m. 22.9 ppb (22) 7.4 ppb (7) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 22.0
 
Jan. 21, 2021, 2 p.m. 17.9 ppb (17) 2.2 ppb (3) N/A 16.0 ppb (16) N/A N/A 15.0 ppb (14) N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 21, 2021, 1 p.m. 13.0 ppb (13) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2021, noon 14.6 ppb (14) 2.1 ppb (2) N/A 13.0 ppb (13) N/A N/A 17.0 ppb (16) N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 21, 2021, 11 a.m. 11.1 ppb (11) 1.4 ppb (2) N/A 10.0 ppb (10) N/A N/A 20.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
Jan. 21, 2021, 10 a.m. 8.0 ppb (8) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) N/A N/A 2.5 μg/m3 (11) 24.0
 
Jan. 21, 2021, 9 a.m. 8.4 ppb (8) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) N/A N/A 2.1 μg/m3 (9) 24.0
 
Jan. 21, 2021, 8 a.m. 5.4 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A N/A 4.4 μg/m3 (19) 25.0
 
Jan. 21, 2021, 7 a.m. 6.8 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) N/A N/A 4.9 μg/m3 (21) 24.0
 
Jan. 21, 2021, 6 a.m. 8.4 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2021, 5 a.m. 8.2 ppb (8) 0.9 ppb (1) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) N/A N/A 4.5 μg/m3 (19) 25.0
 
Jan. 21, 2021, 4 a.m. 10.9 ppb (11) 1.2 ppb (2) N/A 10.0 ppb (10) N/A N/A 24.0 ppb (23) N/A N/A 9.2 μg/m3 (39) 39.0
 
Jan. 21, 2021, 3 a.m. 11.6 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) N/A N/A 12.3 μg/m3 (52) 52.0
 
Jan. 21, 2021, 2 a.m. 14.0 ppb (14) 1.0 ppb (1) N/A 13.0 ppb (13) N/A N/A 23.0 ppb (22) N/A N/A 14.8 μg/m3 (57) 57.0
 
Jan. 21, 2021, 1 a.m. 14.1 ppb (14) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 24.0 ppb (23) N/A N/A 12.3 μg/m3 (52) 52.0
 
Jan. 21, 2021, midnight 19.9 ppb (19) 1.4 ppb (2) N/A 19.0 ppb (18) N/A N/A 28.0 ppb (26) N/A N/A 6.3 μg/m3 (27) 27.0
 
Jan. 20, 2021, 11 p.m. 8.7 ppb (9) 1.4 ppb (2) N/A 7.0 ppb (7) N/A N/A 41.0 ppb (38) N/A N/A 3.1 μg/m3 (13) 38.0
 
Jan. 20, 2021, 10 p.m. 6.7 ppb (7) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) N/A N/A 2.8 μg/m3 (12) 40.0
 
Jan. 20, 2021, 9 p.m. 5.8 ppb (6) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) N/A N/A 2.5 μg/m3 (11) 40.0
 
Jan. 20, 2021, 8 p.m. 7.2 ppb (7) 2.4 ppb (3) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (39) N/A N/A 2.6 μg/m3 (11) 39.0
 
Jan. 20, 2021, 7 p.m. 10.6 ppb (10) 4.1 ppb (4) N/A 7.0 ppb (7) N/A N/A 38.0 ppb (36) N/A N/A 3.1 μg/m3 (13) 36.0
 
Jan. 20, 2021, 6 p.m. 8.1 ppb (8) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) N/A N/A 3.4 μg/m3 (15) 35.0
 
Jan. 20, 2021, 5 p.m. 7.9 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 3.4 μg/m3 (15) 31.0
 
Jan. 20, 2021, 4 p.m. 27.3 ppb (26) 12.5 ppb (12) N/A 15.0 ppb (15) N/A N/A 23.0 ppb (22) N/A N/A 7.5 μg/m3 (32) 32.0
 
Jan. 20, 2021, 3 p.m. 14.3 ppb (14) 3.9 ppb (4) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) N/A N/A 6.5 μg/m3 (28) 28.0
 
Jan. 20, 2021, 2 p.m. 10.0 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A 25.0 ppb (24) N/A N/A 5.5 μg/m3 (23) 24.0
 
Jan. 20, 2021, 1 p.m. 10.4 ppb (10) 1.1 ppb (2) N/A 9.0 ppb (9) N/A N/A 24.0 ppb (23) N/A N/A 2.7 μg/m3 (12) 23.0
 
Jan. 20, 2021, noon 5.5 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A N/A 8.2 μg/m3 (35) 35.0
 
Jan. 20, 2021, 11 a.m. 4.9 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 3.0 μg/m3 (13) 27.0
 
Jan. 20, 2021, 10 a.m. 5.0 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
Jan. 20, 2021, 9 a.m. 5.2 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) N/A N/A 1.7 μg/m3 (8) 27.0
 
Jan. 20, 2021, 8 a.m. 4.4 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 4.4 μg/m3 (19) 27.0
 
Jan. 20, 2021, 7 a.m. 5.0 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) N/A N/A 5.8 μg/m3 (25) 28.0
 
Jan. 20, 2021, 6 a.m. 5.3 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 20, 2021, 5 a.m. 5.7 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2021, 4 a.m. 6.8 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (26) N/A N/A 10.5 μg/m3 (44) 44.0
 
Jan. 20, 2021, 3 a.m. 7.6 ppb (8) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) N/A N/A 7.2 μg/m3 (31) 31.0
 
Jan. 20, 2021, 2 a.m. 6.4 ppb (7) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) N/A N/A 7.2 μg/m3 (31) 31.0
 
Jan. 20, 2021, 1 a.m. 5.2 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 6.1 μg/m3 (26) 33.0
 
Jan. 20, 2021, midnight 10.7 ppb (11) 1.2 ppb (2) N/A 10.0 ppb (10) N/A N/A 36.0 ppb (34) N/A N/A 2.7 μg/m3 (12) 34.0
 
Jan. 19, 2021, 11 p.m. 8.1 ppb (8) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (38) N/A N/A 1.2 μg/m3 (5) 38.0
 
Jan. 19, 2021, 10 p.m. 7.0 ppb (7) 2.4 ppb (3) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (39) N/A N/A 1.2 μg/m3 (5) 39.0
 
Jan. 19, 2021, 9 p.m. 7.3 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) N/A N/A 1.2 μg/m3 (5) 38.0
 
Jan. 19, 2021, 8 p.m. 5.7 ppb (6) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) N/A N/A 1.0 μg/m3 (5) 36.0
 
Jan. 19, 2021, 7 p.m. 3.5 ppb (4) 1.5 ppb (2) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
Jan. 19, 2021, 6 p.m. 0.9 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 0.4 μg/m3 (2) 39.0
 
Jan. 19, 2021, 5 p.m. 0.7 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
Jan. 19, 2021, 4 p.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 0.3 μg/m3 (2) 38.0
 
Jan. 19, 2021, 3 p.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 0.6 μg/m3 (3) 37.0
 
Jan. 19, 2021, 2 p.m. 1.6 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 0.8 μg/m3 (4) 37.0
 
Jan. 19, 2021, 1 p.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 1.6 μg/m3 (7) 38.0
 
Jan. 19, 2021, noon 1.0 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 0.5 μg/m3 (3) 37.0
 
Jan. 19, 2021, 11 a.m. 0.8 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 0.4 μg/m3 (2) 36.0
 
Jan. 19, 2021, 10 a.m. 1.0 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 0.9 μg/m3 (4) 36.0
 
Jan. 19, 2021, 9 a.m. 0.7 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 1.4 μg/m3 (6) 36.0
 
Jan. 19, 2021, 8 a.m. 0.9 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 0.4 μg/m3 (2) 36.0
 
Jan. 19, 2021, 7 a.m. 0.9 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 4.9 μg/m3 (21) 35.0
 
Jan. 19, 2021, 6 a.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 1.8 μg/m3 (8) 34.0
 
Jan. 19, 2021, 5 a.m. 2.3 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 1.9 μg/m3 (8) 33.0
 
Jan. 19, 2021, 4 a.m. 2.1 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 1.7 μg/m3 (8) 33.0
 
Jan. 19, 2021, 3 a.m. 2.3 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 0.5 μg/m3 (3) 33.0
 
Jan. 19, 2021, 2 a.m. 1.9 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 1.0 μg/m3 (5) 34.0
 
Jan. 19, 2021, 1 a.m. 3.3 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) N/A N/A 1.8 μg/m3 (8) 31.0
 
Jan. 19, 2021, midnight 2.6 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
Jan. 18, 2021, 11 p.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
Jan. 18, 2021, 10 p.m. 1.4 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 0.5 μg/m3 (3) 38.0
 
Jan. 18, 2021, 9 p.m. 2.3 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
Jan. 18, 2021, 8 p.m. 7.1 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
Jan. 18, 2021, 7 p.m. 6.0 ppb (6) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) N/A N/A 1.0 μg/m3 (5) 40.0
 
Jan. 18, 2021, 6 p.m. 8.3 ppb (8) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 39.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
Jan. 18, 2021, 5 p.m. 4.5 ppb (5) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) N/A N/A 3.2 μg/m3 (14) 39.0
 
Jan. 18, 2021, 4 p.m. 6.9 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) N/A N/A 3.7 μg/m3 (16) 34.0
 
Jan. 18, 2021, 3 p.m. 11.2 ppb (11) 2.0 ppb (2) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) N/A N/A 3.6 μg/m3 (16) 28.0
 
Jan. 18, 2021, 2 p.m. 8.8 ppb (9) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) N/A N/A 5.2 μg/m3 (22) 30.0
 
Jan. 18, 2021, 1 p.m. 6.6 ppb (7) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 2.9 μg/m3 (13) 33.0
 
Jan. 18, 2021, noon 6.3 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (32) N/A N/A 2.6 μg/m3 (11) 32.0
 
Jan. 18, 2021, 11 a.m. 5.4 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 3.0 μg/m3 (13) 32.0
 
Jan. 18, 2021, 10 a.m. 5.3 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 3.2 μg/m3 (14) 33.0
 
Jan. 18, 2021, 9 a.m. 4.7 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) N/A N/A 3.7 μg/m3 (16) 35.0
 
Jan. 18, 2021, 8 a.m. 5.5 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 4.2 μg/m3 (18) 33.0
 
Jan. 18, 2021, 7 a.m. 7.8 ppb (8) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 18, 2021, 6 a.m. 6.8 ppb (7) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) N/A N/A 8.9 μg/m3 (38) 38.0
 
Jan. 18, 2021, 5 a.m. 10.9 ppb (11) 0.6 ppb (1) N/A 10.0 ppb (10) N/A N/A 28.0 ppb (26) N/A N/A 15.0 μg/m3 (58) 58.0
 
Jan. 18, 2021, 4 a.m. 9.4 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A 27.0 ppb (25) N/A N/A 16.2 μg/m3 (60) 60.0
 
Jan. 18, 2021, 3 a.m. 12.1 ppb (12) 0.6 ppb (1) N/A 12.0 ppb (12) N/A N/A 32.0 ppb (30) N/A N/A 14.3 μg/m3 (56) 56.0
 
Jan. 18, 2021, 2 a.m. 10.0 ppb (10) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A 34.0 ppb (32) N/A N/A 17.6 μg/m3 (63) 63.0
 
Jan. 18, 2021, 1 a.m. 13.8 ppb (14) 0.5 ppb (1) N/A 13.0 ppb (13) N/A N/A 34.0 ppb (32) N/A N/A 15.5 μg/m3 (59) 59.0