ID: 7748

AQSQID: 113490354002

Site Name: Nr

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

Updated: Sept. 22, 2021, 8:01 a.m.

Location: Salt Lake City (Clover Crest Number 2), UT

Reporting: True, Located: True

Current AQI: 46.0

Salt Lake City (Clover Crest Number 2) UT, US: 40.662841, -111.901796

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2021, 5 a.m. 35.1 ppb (34) 4.1 ppb (4) N/A 31.0 ppb (30) N/A N/A 8.0 ppb (8) 0.2 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 22, 2021, 4 a.m. 42.9 ppb (41) 8.9 ppb (9) N/A 34.0 ppb (33) N/A N/A 6.0 ppb (6) 0.4 ppb (5) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 22, 2021, 3 a.m. 32.0 ppb (31) 4.6 ppb (5) N/A 28.0 ppb (27) N/A N/A 19.0 ppb (18) 0.2 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 22, 2021, 2 a.m. 23.1 ppb (22) 2.1 ppb (2) N/A 21.0 ppb (20) N/A N/A 30.0 ppb (28) 0.1 ppb (2) N/A 5.5 μg/m3 (23) 28.0
 
Sept. 22, 2021, 1 a.m. 14.2 ppb (14) 1.2 ppb (2) N/A 13.0 ppb (13) N/A N/A 44.0 ppb (41) 0.0 ppb (0) N/A 4.1 μg/m3 (18) 41.0
 
Sept. 22, 2021, midnight 8.1 ppb (8) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 52.0 ppb (49) 0.0 ppb (0) N/A 3.7 μg/m3 (16) 49.0
 
Sept. 21, 2021, 11 p.m. 8.2 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (7) N/A N/A 54.0 ppb (50) 0.0 ppb (0) N/A 4.9 μg/m3 (21) 50.0
 
Sept. 21, 2021, 10 p.m. 7.1 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 54.0 ppb (50) 0.0 ppb (0) N/A 4.6 μg/m3 (20) 50.0
 
Sept. 21, 2021, 9 p.m. 5.9 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 54.0 ppb (50) 0.0 ppb (0) N/A 3.6 μg/m3 (16) 50.0
 
Sept. 21, 2021, 8 p.m. 13.6 ppb (13) 5.9 ppb (6) N/A 8.0 ppb (8) N/A N/A 47.0 ppb (44) 0.1 ppb (2) N/A 4.9 μg/m3 (21) 44.0
 
Sept. 21, 2021, 7 p.m. 10.1 ppb (10) 4.4 ppb (5) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (42) 0.0 ppb (0) N/A 5.9 μg/m3 (25) 42.0
 
Sept. 21, 2021, 6 p.m. 20.5 ppb (20) 10.1 ppb (10) N/A 10.0 ppb (10) N/A N/A 37.0 ppb (35) 0.1 ppb (2) N/A 5.2 μg/m3 (22) 35.0
 
Sept. 21, 2021, 5 p.m. 20.0 ppb (19) 9.2 ppb (9) N/A 11.0 ppb (11) N/A N/A 34.0 ppb (32) 0.0 ppb (0) N/A 4.2 μg/m3 (18) 32.0
 
Sept. 21, 2021, 4 p.m. 40.9 ppb (39) 22.4 ppb (22) N/A 19.0 ppb (18) N/A N/A 25.0 ppb (24) 0.2 ppb (3) N/A 6.5 μg/m3 (28) 39.0
 
Sept. 21, 2021, 3 p.m. 73.5 ppb (72) 46.6 ppb (44) N/A 27.0 ppb (26) N/A N/A 10.0 ppb (10) 0.4 ppb (5) N/A 13.1 μg/m3 (54) 72.0
 
Sept. 21, 2021, 2 p.m. 55.1 ppb (53) 32.0 ppb (31) N/A 23.0 ppb (22) N/A N/A 7.0 ppb (7) 0.3 ppb (4) N/A 13.7 μg/m3 (55) 55.0
 
Sept. 21, 2021, 1 p.m. 54.0 ppb (51) 29.6 ppb (28) N/A 25.0 ppb (24) N/A N/A 1.0 ppb (1) 0.3 ppb (4) N/A 9.0 μg/m3 (38) 51.0
 
Sept. 21, 2021, noon 32.8 ppb (31) 9.9 ppb (10) N/A 23.0 ppb (22) N/A N/A 3.0 ppb (3) 0.2 ppb (3) N/A 5.9 μg/m3 (25) 31.0
 
Sept. 21, 2021, 11 a.m. 21.7 ppb (21) 2.6 ppb (3) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (3) 0.0 ppb (0) N/A 5.3 μg/m3 (23) 23.0
 
Sept. 21, 2021, 10 a.m. 18.6 ppb (18) 2.9 ppb (3) N/A 16.0 ppb (16) N/A N/A 11.0 ppb (11) 0.0 ppb (0) N/A 5.2 μg/m3 (22) 22.0
 
Sept. 21, 2021, 9 a.m. 17.1 ppb (17) 3.7 ppb (4) N/A 13.0 ppb (13) N/A N/A 15.0 ppb (14) 0.0 ppb (0) N/A 4.4 μg/m3 (19) 19.0
 
Sept. 21, 2021, 8 a.m. 14.7 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (14) N/A N/A 14.0 ppb (13) 0.0 ppb (0) N/A 3.7 μg/m3 (16) 16.0
 
Sept. 21, 2021, 7 a.m. 19.7 ppb (19) 2.6 ppb (3) N/A 17.0 ppb (17) N/A N/A 14.0 ppb (13) 0.0 ppb (0) N/A 4.1 μg/m3 (18) 19.0
 
Sept. 21, 2021, 6 a.m. 13.3 ppb (13) 1.4 ppb (2) N/A 12.0 ppb (12) N/A N/A 22.0 ppb (21) 0.0 ppb (0) N/A 2.5 μg/m3 (11) 21.0
 
Sept. 21, 2021, 5 a.m. 20.8 ppb (20) 5.0 ppb (5) N/A 16.0 ppb (16) N/A N/A 19.0 ppb (18) 0.1 ppb (2) N/A 3.1 μg/m3 (13) 20.0
 
Sept. 21, 2021, 4 a.m. 18.5 ppb (18) 4.4 ppb (5) N/A 14.0 ppb (14) N/A N/A 21.0 ppb (20) 0.1 ppb (2) N/A 4.1 μg/m3 (18) 20.0
 
Sept. 21, 2021, 3 a.m. 23.7 ppb (23) 7.6 ppb (8) N/A 16.0 ppb (16) N/A N/A 19.0 ppb (18) 0.1 ppb (2) N/A 5.0 μg/m3 (21) 23.0
 
Sept. 21, 2021, 2 a.m. 11.6 ppb (11) 1.3 ppb (2) N/A 10.0 ppb (10) N/A N/A 24.0 ppb (23) 0.0 ppb (0) N/A 4.5 μg/m3 (19) 23.0
 
Sept. 21, 2021, 1 a.m. 8.2 ppb (8) 2.4 ppb (3) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.0 ppb (0) N/A 1.2 μg/m3 (5) 31.0
 
Sept. 21, 2021, midnight 5.4 ppb (6) 2.2 ppb (3) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.0 ppb (0) N/A 1.2 μg/m3 (5) 33.0
 
Sept. 20, 2021, 11 p.m. 5.3 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.0 ppb (0) N/A 1.2 μg/m3 (5) 36.0
 
Sept. 20, 2021, 10 p.m. 7.2 ppb (7) 3.6 ppb (4) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.0 ppb (0) N/A 1.4 μg/m3 (6) 37.0
 
Sept. 20, 2021, 9 p.m. 10.0 ppb (10) 5.2 ppb (5) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (36) 0.0 ppb (0) N/A 2.0 μg/m3 (9) 36.0
 
Sept. 20, 2021, 8 p.m. 3.6 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.0 ppb (0) N/A 1.6 μg/m3 (7) 38.0
 
Sept. 20, 2021, 7 p.m. 8.2 ppb (8) 3.7 ppb (4) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.0 ppb (0) N/A 1.8 μg/m3 (8) 38.0
 
Sept. 20, 2021, 6 p.m. 9.3 ppb (9) 5.1 ppb (5) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.0 ppb (0) N/A 2.5 μg/m3 (11) 35.0
 
Sept. 20, 2021, 5 p.m. 11.6 ppb (11) 5.8 ppb (6) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) 0.0 ppb (0) N/A 2.3 μg/m3 (10) 33.0
 
Sept. 20, 2021, 4 p.m. 20.5 ppb (20) 11.6 ppb (11) N/A 9.0 ppb (9) N/A N/A 31.0 ppb (29) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 29.0
 
Sept. 20, 2021, 3 p.m. 27.4 ppb (26) 14.0 ppb (14) N/A 13.0 ppb (13) N/A N/A 23.0 ppb (22) 0.1 ppb (2) N/A 4.2 μg/m3 (18) 26.0
 
Sept. 20, 2021, 2 p.m. 55.6 ppb (53) 33.8 ppb (32) N/A 22.0 ppb (21) N/A N/A 12.0 ppb (12) 0.3 ppb (4) N/A 5.7 μg/m3 (24) 53.0
 
Sept. 20, 2021, 1 p.m. 61.6 ppb (60) 36.5 ppb (35) N/A 25.0 ppb (24) N/A N/A 4.0 ppb (4) 0.4 ppb (5) N/A 6.8 μg/m3 (29) 60.0
 
Sept. 20, 2021, noon 34.2 ppb (33) 13.6 ppb (13) N/A 21.0 ppb (20) N/A N/A 5.0 ppb (5) 0.1 ppb (2) N/A 5.5 μg/m3 (23) 33.0
 
Sept. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.0 ppb (0) N/A 4.4 μg/m3 (19) 19.0
 
Sept. 20, 2021, 10 a.m. 9.5 ppb (9) 1.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 23.0 ppb (22) 0.0 ppb (0) N/A 3.2 μg/m3 (14) 22.0
 
Sept. 20, 2021, 9 a.m. 7.1 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) 0.0 ppb (0) N/A 2.6 μg/m3 (11) 23.0
 
Sept. 20, 2021, 8 a.m. 6.5 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.0 ppb (0) N/A 2.4 μg/m3 (10) 25.0
 
Sept. 20, 2021, 7 a.m. 6.4 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) 0.0 ppb (0) N/A 2.4 μg/m3 (10) 27.0
 
Sept. 20, 2021, 6 a.m. 4.3 ppb (5) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.0 ppb (0) N/A 2.3 μg/m3 (10) 30.0
 
Sept. 20, 2021, 5 a.m. 4.3 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.0 ppb (0) N/A 2.1 μg/m3 (9) 34.0
 
Sept. 20, 2021, 4 a.m. 3.8 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) 0.0 ppb (0) N/A 1.9 μg/m3 (8) 37.0
 
Sept. 20, 2021, 3 a.m. 2.6 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.0 ppb (0) N/A 1.6 μg/m3 (7) 38.0
 
Sept. 20, 2021, 2 a.m. 2.2 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 38.0
 
Sept. 20, 2021, 1 a.m. 2.2 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) 0.0 ppb (0) N/A 1.0 μg/m3 (5) 39.0
 
Sept. 20, 2021, midnight 4.0 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.0 ppb (0) N/A 1.3 μg/m3 (6) 38.0
 
Sept. 19, 2021, 11 p.m. 2.3 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
Sept. 19, 2021, 10 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.0 ppb (0) N/A 7.9 μg/m3 (33) 36.0
 
Sept. 19, 2021, 9 p.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 18.7 μg/m3 (65) 65.0
 
Sept. 19, 2021, 8 p.m. 1.4 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 15.0 μg/m3 (58) 58.0
 
Sept. 19, 2021, 7 p.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 15.8 μg/m3 (59) 59.0
 
Sept. 19, 2021, 6 p.m. 12.0 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (7) N/A N/A 41.0 ppb (38) 0.0 ppb (0) N/A 6.5 μg/m3 (28) 38.0
 
Sept. 19, 2021, 5 p.m. 12.7 ppb (12) 5.9 ppb (6) N/A 7.0 ppb (7) N/A N/A 38.0 ppb (36) 0.0 ppb (0) N/A 5.1 μg/m3 (22) 36.0
 
Sept. 19, 2021, 4 p.m. 9.6 ppb (10) 4.1 ppb (4) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) N/A N/A 4.8 μg/m3 (20) 35.0
 
Sept. 19, 2021, 3 p.m. 6.2 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 4.9 μg/m3 (21) 31.0
 
Sept. 19, 2021, 2 p.m. 2.7 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A N/A 5.7 μg/m3 (24) 28.0
 
Sept. 19, 2021, 1 p.m. 2.4 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Sept. 19, 2021, noon 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A N/A 4.9 μg/m3 (21) 30.0
 
Sept. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 4.9 μg/m3 (21) 34.0
 
Sept. 19, 2021, 10 a.m. 1.6 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A N/A 5.4 μg/m3 (23) 35.0
 
Sept. 19, 2021, 9 a.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 4.4 μg/m3 (19) 34.0
 
Sept. 19, 2021, 8 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 4.1 μg/m3 (18) 34.0
 
Sept. 19, 2021, 7 a.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 4.1 μg/m3 (18) 36.0
 
Sept. 19, 2021, 6 a.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 3.9 μg/m3 (17) 36.0
 
Sept. 19, 2021, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 3.7 μg/m3 (16) 37.0
 
Sept. 19, 2021, 4 a.m. 3.4 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 3.7 μg/m3 (16) 37.0
 
Sept. 19, 2021, 3 a.m. 5.7 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (37) N/A N/A 3.6 μg/m3 (16) 37.0
 
Sept. 19, 2021, 2 a.m. 13.3 ppb (13) 3.5 ppb (4) N/A 10.0 ppb (10) N/A N/A 36.0 ppb (34) 0.0 ppb (0) N/A 4.0 μg/m3 (17) 34.0
 
Sept. 19, 2021, 1 a.m. 15.4 ppb (15) 4.7 ppb (5) N/A 11.0 ppb (11) N/A N/A 37.0 ppb (35) 0.0 ppb (0) N/A 4.1 μg/m3 (18) 35.0
 
Sept. 19, 2021, midnight 14.7 ppb (14) 4.8 ppb (5) N/A 10.0 ppb (10) N/A N/A 39.0 ppb (37) 0.0 ppb (0) N/A 4.0 μg/m3 (17) 37.0
 
Sept. 18, 2021, 11 p.m. 11.4 ppb (11) 4.1 ppb (4) N/A 7.0 ppb (7) N/A N/A 40.0 ppb (38) 0.0 ppb (0) N/A 3.4 μg/m3 (15) 38.0
 
Sept. 18, 2021, 10 p.m. 13.9 ppb (14) 6.0 ppb (6) N/A 8.0 ppb (8) N/A N/A 40.0 ppb (38) 0.0 ppb (0) N/A 3.2 μg/m3 (14) 38.0
 
Sept. 18, 2021, 9 p.m. 14.3 ppb (14) 6.0 ppb (6) N/A 8.0 ppb (8) N/A N/A 38.0 ppb (36) 0.0 ppb (0) N/A 4.3 μg/m3 (18) 36.0
 
Sept. 18, 2021, 8 p.m. 14.4 ppb (14) 5.1 ppb (5) N/A 9.0 ppb (9) N/A N/A 40.0 ppb (38) 0.0 ppb (0) N/A 5.5 μg/m3 (23) 38.0
 
Sept. 18, 2021, 7 p.m. 4.2 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A N/A 5.7 μg/m3 (24) 40.0
 
Sept. 18, 2021, 6 p.m. 7.2 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) N/A N/A 5.4 μg/m3 (23) 38.0
 
Sept. 18, 2021, 5 p.m. 2.7 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 6.7 μg/m3 (28) 39.0
 
Sept. 18, 2021, 4 p.m. 4.9 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) N/A N/A 7.2 μg/m3 (31) 37.0
 
Sept. 18, 2021, 3 p.m. 20.6 ppb (20) 6.0 ppb (6) N/A 15.0 ppb (15) N/A N/A 25.0 ppb (24) 0.0 ppb (0) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 18, 2021, 2 p.m. 13.6 ppb (13) 6.2 ppb (6) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) N/A N/A 8.6 μg/m3 (36) 36.0
 
Sept. 18, 2021, 1 p.m. 13.3 ppb (13) 5.7 ppb (6) N/A 8.0 ppb (8) N/A N/A 36.0 ppb (34) N/A N/A 11.3 μg/m3 (48) 48.0
 
Sept. 18, 2021, noon 11.6 ppb (11) 3.2 ppb (4) N/A 8.0 ppb (8) N/A N/A 36.0 ppb (34) N/A N/A 6.9 μg/m3 (29) 34.0
 
Sept. 18, 2021, 11 a.m. 11.5 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (10) N/A N/A 33.0 ppb (31) N/A N/A 6.5 μg/m3 (28) 31.0
 
Sept. 18, 2021, 10 a.m. 4.1 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
Sept. 18, 2021, 9 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 5.8 μg/m3 (25) 37.0
 
Sept. 18, 2021, 8 a.m. 3.5 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 6.8 μg/m3 (29) 35.0
 
Sept. 18, 2021, 7 a.m. 12.3 ppb (12) 1.0 ppb (1) N/A 11.0 ppb (11) N/A N/A 32.0 ppb (30) 0.0 ppb (0) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 18, 2021, 6 a.m. 23.2 ppb (22) 5.0 ppb (5) N/A 18.0 ppb (17) N/A N/A 24.0 ppb (23) 0.1 ppb (2) N/A 8.3 μg/m3 (35) 35.0
 
Sept. 18, 2021, 5 a.m. 44.3 ppb (42) 13.0 ppb (13) N/A 32.0 ppb (31) N/A N/A 12.0 ppb (12) 0.3 ppb (4) N/A 10.7 μg/m3 (45) 45.0
 
Sept. 18, 2021, 4 a.m. 61.4 ppb (59) 19.1 ppb (19) N/A 43.0 ppb (41) N/A N/A 4.0 ppb (4) 0.5 ppb (6) N/A 12.6 μg/m3 (53) 59.0
 
Sept. 18, 2021, 3 a.m. 38.3 ppb (37) 6.4 ppb (7) N/A 32.0 ppb (31) N/A N/A 19.0 ppb (18) 0.3 ppb (4) N/A 12.9 μg/m3 (53) 53.0
 
Sept. 18, 2021, 2 a.m. 27.0 ppb (26) 1.3 ppb (2) N/A 26.0 ppb (25) N/A N/A 30.0 ppb (28) 0.2 ppb (3) N/A 12.4 μg/m3 (52) 52.0
 
Sept. 18, 2021, 1 a.m. 18.4 ppb (18) 2.1 ppb (2) N/A 16.0 ppb (16) N/A N/A 44.0 ppb (41) 0.1 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Sept. 18, 2021, midnight 28.1 ppb (27) 8.3 ppb (8) N/A 20.0 ppb (19) N/A N/A 42.0 ppb (39) 0.2 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
Sept. 17, 2021, 11 p.m. 22.3 ppb (22) 8.3 ppb (8) N/A 14.0 ppb (14) N/A N/A 48.0 ppb (45) 0.2 ppb (3) N/A 13.5 μg/m3 (54) 54.0
 
Sept. 17, 2021, 10 p.m. 20.8 ppb (20) 9.4 ppb (9) N/A 11.0 ppb (11) N/A N/A 49.0 ppb (46) 0.1 ppb (2) N/A 9.7 μg/m3 (41) 46.0
 
Sept. 17, 2021, 9 p.m. 28.9 ppb (28) 12.9 ppb (13) N/A 16.0 ppb (16) N/A N/A 46.0 ppb (43) 0.1 ppb (2) N/A 8.0 μg/m3 (34) 43.0
 
Sept. 17, 2021, 8 p.m. 29.0 ppb (28) 13.7 ppb (13) N/A 15.0 ppb (15) N/A N/A 46.0 ppb (43) 0.1 ppb (2) N/A 7.4 μg/m3 (31) 43.0
 
Sept. 17, 2021, 7 p.m. 40.1 ppb (38) 16.1 ppb (16) N/A 24.0 ppb (23) N/A N/A 42.0 ppb (39) 0.2 ppb (3) N/A 14.9 μg/m3 (57) 57.0
 
Sept. 17, 2021, 6 p.m. 34.5 ppb (33) 13.7 ppb (13) N/A 21.0 ppb (20) N/A N/A 37.0 ppb (35) 0.2 ppb (3) N/A 17.1 μg/m3 (62) 62.0
 
Sept. 17, 2021, 5 p.m. 23.5 ppb (23) 9.2 ppb (9) N/A 14.0 ppb (14) N/A N/A 35.0 ppb (33) 0.1 ppb (2) N/A 16.8 μg/m3 (61) 61.0
 
Sept. 17, 2021, 4 p.m. 39.0 ppb (37) 17.7 ppb (17) N/A 21.0 ppb (20) N/A N/A 26.0 ppb (25) 0.1 ppb (2) N/A 19.1 μg/m3 (66) 66.0
 
Sept. 17, 2021, 3 p.m. 97.9 ppb (98) 64.0 ppb (62) N/A 34.0 ppb (33) N/A N/A 11.0 ppb (11) 0.6 ppb (7) N/A 22.4 μg/m3 (73) 98.0
 
Sept. 17, 2021, 2 p.m. 73.9 ppb (73) 46.8 ppb (45) N/A 27.0 ppb (26) N/A N/A 6.0 ppb (6) 0.4 ppb (5) N/A 21.8 μg/m3 (72) 73.0
 
Sept. 17, 2021, 1 p.m. 73.2 ppb (72) 47.2 ppb (45) N/A 26.0 ppb (25) N/A N/A 1.0 ppb (1) 0.4 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 17, 2021, noon 36.6 ppb (35) 14.9 ppb (15) N/A 22.0 ppb (21) N/A N/A 1.0 ppb (1) 0.1 ppb (2) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 17, 2021, 11 a.m. 29.0 ppb (28) 9.2 ppb (9) N/A 20.0 ppb (19) N/A N/A N/A 0.0 ppb (0) N/A 19.2 μg/m3 (66) 66.0
 
Sept. 17, 2021, 10 a.m. 24.2 ppb (23) 4.6 ppb (5) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (5) 0.0 ppb (0) N/A 18.9 μg/m3 (66) 66.0
 
Sept. 17, 2021, 9 a.m. 20.3 ppb (20) 2.3 ppb (3) N/A 18.0 ppb (17) N/A N/A 7.0 ppb (7) 0.0 ppb (0) N/A 19.1 μg/m3 (66) 66.0
 
Sept. 17, 2021, 8 a.m. 24.5 ppb (24) 3.8 ppb (4) N/A 21.0 ppb (20) N/A N/A 10.0 ppb (10) 0.0 ppb (0) N/A 17.8 μg/m3 (63) 63.0
 
Sept. 17, 2021, 7 a.m. 13.1 ppb (13) 0.8 ppb (1) N/A 12.0 ppb (12) N/A N/A 18.0 ppb (17) 0.0 ppb (0) N/A 17.9 μg/m3 (64) 64.0
 
Sept. 17, 2021, 6 a.m. 13.0 ppb (13) 1.7 ppb (2) N/A 11.0 ppb (11) N/A N/A 24.0 ppb (23) 0.0 ppb (0) N/A 19.5 μg/m3 (67) 67.0
 
Sept. 17, 2021, 5 a.m. 9.1 ppb (9) 0.1 ppb (1) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) 0.0 ppb (0) N/A 19.9 μg/m3 (68) 68.0
 
Sept. 17, 2021, 4 a.m. 14.9 ppb (15) 0.0 ppb (0) N/A 15.0 ppb (15) N/A N/A 25.0 ppb (24) 0.0 ppb (0) N/A 14.7 μg/m3 (57) 57.0
 
Sept. 17, 2021, 3 a.m. 26.4 ppb (25) 2.7 ppb (3) N/A 24.0 ppb (23) N/A N/A 20.0 ppb (19) 0.1 ppb (2) N/A 14.1 μg/m3 (56) 56.0
 
Sept. 17, 2021, 2 a.m. 11.4 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (11) N/A N/A 36.0 ppb (34) 0.0 ppb (0) N/A 12.2 μg/m3 (52) 52.0
 
Sept. 17, 2021, 1 a.m. 6.6 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 44.0 ppb (41) 0.0 ppb (0) N/A 12.1 μg/m3 (51) 51.0
 
Sept. 17, 2021, midnight 4.8 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (48) 0.0 ppb (0) N/A 13.2 μg/m3 (54) 54.0
 
Sept. 16, 2021, 11 p.m. 4.5 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (50) 0.0 ppb (0) N/A 13.3 μg/m3 (54) 54.0
 
Sept. 16, 2021, 10 p.m. 3.1 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 56.0 ppb (55) 0.0 ppb (0) N/A 12.3 μg/m3 (52) 55.0
 
Sept. 16, 2021, 9 p.m. 7.9 ppb (8) 2.4 ppb (3) N/A 5.0 ppb (5) N/A N/A 57.0 ppb (58) 0.0 ppb (0) N/A 13.3 μg/m3 (54) 58.0
 
Sept. 16, 2021, 8 p.m. 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 59.0 ppb (65) 0.0 ppb (0) N/A 13.4 μg/m3 (54) 65.0
 
Sept. 16, 2021, 7 p.m. 4.8 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 58.0 ppb (61) 0.0 ppb (0) N/A 13.8 μg/m3 (55) 61.0
 
Sept. 16, 2021, 6 p.m. 7.0 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 52.0 ppb (49) 0.0 ppb (0) N/A 13.6 μg/m3 (55) 55.0
 
Sept. 16, 2021, 5 p.m. 17.3 ppb (17) 6.9 ppb (7) N/A 10.0 ppb (10) N/A N/A 46.0 ppb (43) 0.0 ppb (0) N/A 14.2 μg/m3 (56) 56.0
 
Sept. 16, 2021, 4 p.m. 33.1 ppb (32) 14.5 ppb (14) N/A 19.0 ppb (18) N/A N/A 33.0 ppb (31) 0.1 ppb (2) N/A 13.6 μg/m3 (55) 55.0
 
Sept. 16, 2021, 3 p.m. 63.0 ppb (61) 34.3 ppb (33) N/A 29.0 ppb (28) N/A N/A 18.0 ppb (17) 0.3 ppb (4) N/A 12.7 μg/m3 (53) 61.0
 
Sept. 16, 2021, 2 p.m. 110.0 ppb (103) 69.9 ppb (68) N/A 40.0 ppb (38) N/A N/A 5.0 ppb (5) 0.7 ppb (8) N/A 17.6 μg/m3 (63) 103.0
 
Sept. 16, 2021, 1 p.m. 74.1 ppb (73) 38.6 ppb (37) N/A 36.0 ppb (34) N/A N/A 7.0 ppb (7) 0.5 ppb (6) N/A 13.3 μg/m3 (54) 73.0
 
Sept. 16, 2021, noon 54.4 ppb (52) 23.3 ppb (22) N/A 31.0 ppb (30) N/A N/A 12.0 ppb (12) 0.2 ppb (3) N/A 10.9 μg/m3 (46) 52.0
 
Sept. 16, 2021, 11 a.m. 30.1 ppb (29) 9.7 ppb (10) N/A 20.0 ppb (19) N/A N/A 25.0 ppb (24) 0.0 ppb (0) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 16, 2021, 10 a.m. 12.7 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (11) N/A N/A 33.0 ppb (31) 0.0 ppb (0) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2021, 9 a.m. 14.3 ppb (14) 2.4 ppb (3) N/A 12.0 ppb (12) N/A N/A 29.0 ppb (27) 0.0 ppb (0) N/A 10.6 μg/m3 (45) 45.0
 
Sept. 16, 2021, 8 a.m. 12.5 ppb (12) 1.6 ppb (2) N/A 11.0 ppb (11) N/A N/A 32.0 ppb (30) 0.0 ppb (0) N/A 12.2 μg/m3 (52) 52.0
 
Sept. 16, 2021, 7 a.m. 25.4 ppb (24) 1.2 ppb (2) N/A 24.0 ppb (23) N/A N/A 17.0 ppb (16) 0.1 ppb (2) N/A 15.4 μg/m3 (58) 58.0
 
Sept. 16, 2021, 6 a.m. 25.5 ppb (25) 3.1 ppb (3) N/A 22.0 ppb (21) N/A N/A 26.0 ppb (25) 0.1 ppb (2) N/A 14.8 μg/m3 (57) 57.0
 
Sept. 16, 2021, 5 a.m. 36.3 ppb (35) 3.9 ppb (4) N/A 32.0 ppb (31) N/A N/A 17.0 ppb (16) 0.2 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 16, 2021, 4 a.m. 46.0 ppb (44) 8.4 ppb (8) N/A 38.0 ppb (36) N/A N/A 14.0 ppb (13) 0.4 ppb (5) N/A 16.5 μg/m3 (61) 61.0
 
Sept. 16, 2021, 3 a.m. 34.9 ppb (33) 3.6 ppb (4) N/A 32.0 ppb (31) N/A N/A 22.0 ppb (21) 0.2 ppb (3) N/A 15.7 μg/m3 (59) 59.0
 
Sept. 16, 2021, 2 a.m. 21.4 ppb (21) 1.3 ppb (2) N/A 20.0 ppb (19) N/A N/A 39.0 ppb (37) 0.1 ppb (2) N/A 14.5 μg/m3 (57) 57.0
 
Sept. 16, 2021, 1 a.m. 9.9 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A 61.0 ppb (71) 0.0 ppb (0) N/A 13.2 μg/m3 (54) 71.0
 
Sept. 16, 2021, midnight 7.0 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 72.0 ppb (102) 0.0 ppb (0) N/A 13.7 μg/m3 (55) 102.0
 
Sept. 15, 2021, 11 p.m. 6.2 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 78.0 ppb (105) 0.0 ppb (0) N/A 13.8 μg/m3 (55) 105.0
 
Sept. 15, 2021, 10 p.m. 3.7 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 70.0 ppb (100) 0.0 ppb (0) N/A 11.5 μg/m3 (48) 100.0
 
Sept. 15, 2021, 9 p.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 66.0 ppb (87) 0.0 ppb (0) N/A 11.3 μg/m3 (48) 87.0
 
Sept. 15, 2021, 8 p.m. 6.2 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 66.0 ppb (87) 0.0 ppb (0) N/A 11.8 μg/m3 (50) 87.0
 
Sept. 15, 2021, 7 p.m. 19.3 ppb (19) 6.9 ppb (7) N/A 13.0 ppb (13) N/A N/A 55.0 ppb (51) 0.0 ppb (0) N/A 14.4 μg/m3 (56) 56.0
 
Sept. 15, 2021, 6 p.m. 23.6 ppb (23) 8.5 ppb (9) N/A 15.0 ppb (15) N/A N/A 49.0 ppb (46) 0.0 ppb (0) N/A 16.8 μg/m3 (61) 61.0
 
Sept. 15, 2021, 5 p.m. 20.3 ppb (20) 6.3 ppb (6) N/A 14.0 ppb (14) N/A N/A 44.0 ppb (41) 0.0 ppb (0) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 15, 2021, 4 p.m. 27.0 ppb (26) 10.3 ppb (10) N/A 17.0 ppb (17) N/A N/A 37.0 ppb (35) 0.2 ppb (3) N/A 17.6 μg/m3 (63) 63.0
 
Sept. 15, 2021, 3 p.m. 46.0 ppb (44) 20.9 ppb (20) N/A 25.0 ppb (24) N/A N/A 24.0 ppb (23) 0.2 ppb (3) N/A 18.7 μg/m3 (65) 65.0
 
Sept. 15, 2021, 2 p.m. 82.8 ppb (82) 45.3 ppb (43) N/A 38.0 ppb (36) N/A N/A 11.0 ppb (11) 0.5 ppb (6) N/A 20.5 μg/m3 (69) 82.0
 
Sept. 15, 2021, 1 p.m. 79.8 ppb (79) 40.2 ppb (38) N/A 40.0 ppb (38) N/A N/A 6.0 ppb (6) 0.4 ppb (5) N/A 19.1 μg/m3 (66) 79.0
 
Sept. 15, 2021, noon 68.2 ppb (67) 30.3 ppb (29) N/A 38.0 ppb (36) N/A N/A 4.0 ppb (4) 0.3 ppb (4) N/A 18.3 μg/m3 (65) 67.0
 
Sept. 15, 2021, 11 a.m. 55.1 ppb (53) 24.0 ppb (23) N/A 31.0 ppb (30) N/A N/A 1.0 ppb (1) 0.2 ppb (3) N/A 18.4 μg/m3 (65) 65.0
 
Sept. 15, 2021, 10 a.m. 28.0 ppb (27) 2.5 ppb (3) N/A 26.0 ppb (25) N/A N/A 3.0 ppb (3) 0.0 ppb (0) N/A 17.9 μg/m3 (64) 64.0
 
Sept. 15, 2021, 9 a.m. 27.0 ppb (26) 3.2 ppb (4) N/A 24.0 ppb (23) N/A N/A 11.0 ppb (11) 0.0 ppb (0) N/A 17.8 μg/m3 (63) 63.0
 
Sept. 15, 2021, 8 a.m. 27.9 ppb (27) 2.7 ppb (3) N/A 25.0 ppb (24) N/A N/A 6.0 ppb (6) 0.1 ppb (2) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 15, 2021, 7 a.m. 30.4 ppb (29) 1.6 ppb (2) N/A 29.0 ppb (28) N/A N/A 8.0 ppb (8) 0.1 ppb (2) N/A 16.9 μg/m3 (62) 62.0
 
Sept. 15, 2021, 6 a.m. 28.5 ppb (27) 1.3 ppb (2) N/A 27.0 ppb (26) N/A N/A 9.0 ppb (9) 0.1 ppb (2) N/A 16.6 μg/m3 (61) 61.0