ID: 546

AQSQID: 320030071

Site Name: Walter Johnson

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

Updated: Sept. 22, 2021, 6:01 p.m.

Location: Las Vegas (Villa Monterey Dr), NV

Reporting: True, Located: True

Current AQI: 37.0

Las Vegas (Villa Monterey Dr) NV, US: 36.169756, -115.263038

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 28.0 μg/m3 (26) 6.6 μg/m3 (28) 37.0
 
Sept. 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 31.0 μg/m3 (29) 7.0 μg/m3 (30) 30.0
 
Sept. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 23.0 μg/m3 (22) 5.6 μg/m3 (24) 26.0
 
Sept. 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 29.0 μg/m3 (27) 7.3 μg/m3 (31) 31.0
 
Sept. 22, 2021, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 18.0 μg/m3 (17) 5.2 μg/m3 (22) 34.0
 
Sept. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 13.0 μg/m3 (13) 4.8 μg/m3 (20) 37.0
 
Sept. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 14.0 μg/m3 (13) 4.7 μg/m3 (20) 38.0
 
Sept. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 14.0 μg/m3 (13) 4.9 μg/m3 (21) 38.0
 
Sept. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 14.0 μg/m3 (13) 4.8 μg/m3 (20) 38.0
 
Sept. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 13.0 μg/m3 (13) 5.0 μg/m3 (21) 38.0
 
Sept. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 16.0 μg/m3 (15) 5.1 μg/m3 (22) 38.0
 
Sept. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 20.0 μg/m3 (19) 5.3 μg/m3 (23) 41.0
 
Sept. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 23.0 μg/m3 (22) 7.9 μg/m3 (33) 39.0
 
Sept. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 30.0 μg/m3 (28) 10.9 μg/m3 (46) 46.0
 
Sept. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 64.0 μg/m3 (56) 11.6 μg/m3 (49) 56.0
 
Sept. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 33.0 μg/m3 (31) 5.9 μg/m3 (25) 46.0
 
Sept. 22, 2021, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 19.0 μg/m3 (18) 4.9 μg/m3 (21) 50.0
 
Sept. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 20.0 μg/m3 (19) 4.4 μg/m3 (19) 51.0
 
Sept. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 23.0 μg/m3 (22) 5.0 μg/m3 (21) 55.0
 
Sept. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 18.0 μg/m3 (17) 4.4 μg/m3 (19) 51.0
 
Sept. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 16.0 μg/m3 (15) 3.2 μg/m3 (14) 50.0
 
Sept. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 15.0 μg/m3 (14) 3.1 μg/m3 (13) 46.0
 
Sept. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 12.0 μg/m3 (12) 2.6 μg/m3 (11) 44.0
 
Sept. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 14.0 μg/m3 (13) 3.0 μg/m3 (13) 37.0
 
Sept. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 19.0 μg/m3 (18) 4.0 μg/m3 (17) 31.0
 
Sept. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 37.0 μg/m3 (35) 6.0 μg/m3 (25) 35.0
 
Sept. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 23.0 μg/m3 (22) 5.0 μg/m3 (21) 22.0
 
Sept. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 17.0 μg/m3 (16) 4.1 μg/m3 (18) 18.0
 
Sept. 21, 2021, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 16.0 μg/m3 (15) 4.4 μg/m3 (19) 20.0
 
Sept. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 20.0 μg/m3 (19) 5.0 μg/m3 (21) 22.0
 
Sept. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 18.0 μg/m3 (17) 4.3 μg/m3 (18) 26.0
 
Sept. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 18.0 μg/m3 (17) 4.8 μg/m3 (20) 24.0
 
Sept. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (26) 8.1 μg/m3 (34) 34.0
 
Sept. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 28.0 μg/m3 (26) 6.7 μg/m3 (28) 28.0
 
Sept. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 29.0 μg/m3 (27) 6.3 μg/m3 (27) 27.0
 
Sept. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 32.0 μg/m3 (30) 8.2 μg/m3 (35) 35.0
 
Sept. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 23.0 μg/m3 (22) 6.8 μg/m3 (29) 29.0
 
Sept. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 23.0 μg/m3 (22) 6.3 μg/m3 (27) 27.0
 
Sept. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 20.0 μg/m3 (19) 5.0 μg/m3 (21) 36.0
 
Sept. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 20.0 μg/m3 (19) 5.0 μg/m3 (21) 41.0
 
Sept. 21, 2021, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 29.0 μg/m3 (27) 6.7 μg/m3 (28) 45.0
 
Sept. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 34.0 μg/m3 (32) 7.4 μg/m3 (31) 46.0
 
Sept. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 43.0 μg/m3 (40) 7.9 μg/m3 (33) 45.0
 
Sept. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 37.0 μg/m3 (35) 8.4 μg/m3 (36) 46.0
 
Sept. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 39.0 μg/m3 (37) 8.1 μg/m3 (34) 45.0
 
Sept. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 40.0 μg/m3 (38) 7.6 μg/m3 (32) 44.0
 
Sept. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 41.0 μg/m3 (38) 8.4 μg/m3 (36) 43.0
 
Sept. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 47.0 μg/m3 (44) 8.8 μg/m3 (37) 44.0
 
Sept. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 49.0 μg/m3 (46) 8.7 μg/m3 (37) 46.0
 
Sept. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 71.0 μg/m3 (59) 11.1 μg/m3 (47) 59.0
 
Sept. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 74.0 μg/m3 (61) 13.6 μg/m3 (55) 61.0
 
Sept. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 76.0 μg/m3 (62) 17.6 μg/m3 (63) 63.0
 
Sept. 20, 2021, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 59.0 μg/m3 (53) 19.3 μg/m3 (67) 67.0
 
Sept. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 99.0 μg/m3 (73) 34.8 μg/m3 (99) 99.0
 
Sept. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 81.0 μg/m3 (64) 30.0 μg/m3 (89) 89.0
 
Sept. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 56.0 μg/m3 (52) 21.1 μg/m3 (70) 70.0
 
Sept. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 49.0 μg/m3 (46) 13.6 μg/m3 (55) 55.0
 
Sept. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 51.0 μg/m3 (48) 11.7 μg/m3 (49) 49.0
 
Sept. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 49.0 μg/m3 (46) 13.1 μg/m3 (54) 54.0
 
Sept. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 55.0 μg/m3 (51) 12.1 μg/m3 (51) 51.0
 
Sept. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 57.0 μg/m3 (52) 13.7 μg/m3 (55) 55.0
 
Sept. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 54.0 μg/m3 (50) 9.5 μg/m3 (40) 50.0
 
Sept. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 53.0 μg/m3 (50) 8.9 μg/m3 (38) 50.0
 
Sept. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 57.0 μg/m3 (52) 9.7 μg/m3 (41) 52.0
 
Sept. 20, 2021, midnight N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 65.0 μg/m3 (56) 14.0 μg/m3 (55) 56.0
 
Sept. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 62.0 μg/m3 (55) 20.8 μg/m3 (70) 70.0
 
Sept. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 45.0 μg/m3 (42) 15.7 μg/m3 (59) 61.0
 
Sept. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 37.0 μg/m3 (35) 13.1 μg/m3 (54) 54.0
 
Sept. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 25.0 μg/m3 (24) 6.4 μg/m3 (27) 49.0
 
Sept. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 25.0 μg/m3 (24) 6.0 μg/m3 (25) 49.0
 
Sept. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 26.0 μg/m3 (25) 5.6 μg/m3 (24) 50.0
 
Sept. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 22.0 μg/m3 (21) 5.3 μg/m3 (23) 47.0
 
Sept. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 21.0 μg/m3 (20) 6.4 μg/m3 (27) 47.0
 
Sept. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 23.0 μg/m3 (22) 7.9 μg/m3 (33) 46.0
 
Sept. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 25.0 μg/m3 (24) 6.9 μg/m3 (29) 36.0
 
Sept. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 20.0 μg/m3 (19) 5.9 μg/m3 (25) 36.0
 
Sept. 19, 2021, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 20.0 μg/m3 (19) 6.2 μg/m3 (26) 34.0
 
Sept. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 20.0 μg/m3 (19) 6.0 μg/m3 (25) 36.0
 
Sept. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 20.0 μg/m3 (19) 5.6 μg/m3 (24) 44.0
 
Sept. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 21.0 μg/m3 (20) 5.5 μg/m3 (23) 46.0
 
Sept. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 21.0 μg/m3 (20) 5.8 μg/m3 (25) 45.0
 
Sept. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 20.0 μg/m3 (19) 5.3 μg/m3 (23) 46.0
 
Sept. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 22.0 μg/m3 (21) 5.3 μg/m3 (23) 45.0
 
Sept. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 17.0 μg/m3 (16) 5.2 μg/m3 (22) 42.0
 
Sept. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 18.0 μg/m3 (17) 5.1 μg/m3 (22) 39.0
 
Sept. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 18.0 μg/m3 (17) 5.7 μg/m3 (24) 37.0
 
Sept. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 18.0 μg/m3 (17) 5.0 μg/m3 (21) 44.0
 
Sept. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 20.0 μg/m3 (19) 5.1 μg/m3 (22) 46.0
 
Sept. 19, 2021, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 16.0 μg/m3 (15) 4.9 μg/m3 (21) 46.0
 
Sept. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 15.0 μg/m3 (14) 5.0 μg/m3 (21) 43.0
 
Sept. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 13.0 μg/m3 (13) 4.9 μg/m3 (21) 42.0
 
Sept. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 13.0 μg/m3 (13) 5.0 μg/m3 (21) 41.0
 
Sept. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 16.0 μg/m3 (15) 5.8 μg/m3 (25) 43.0
 
Sept. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 26.0 μg/m3 (25) 8.6 μg/m3 (36) 48.0
 
Sept. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 26.0 μg/m3 (25) 9.4 μg/m3 (40) 46.0
 
Sept. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 31.0 μg/m3 (29) 11.4 μg/m3 (48) 48.0
 
Sept. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 31.0 μg/m3 (29) 11.9 μg/m3 (50) 50.0
 
Sept. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 33.0 μg/m3 (31) 11.2 μg/m3 (47) 47.0
 
Sept. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 25.0 μg/m3 (24) 9.9 μg/m3 (42) 42.0
 
Sept. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 21.0 μg/m3 (20) 9.4 μg/m3 (40) 40.0
 
Sept. 18, 2021, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 19.0 μg/m3 (18) 9.3 μg/m3 (39) 39.0
 
Sept. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 18.0 μg/m3 (17) 8.9 μg/m3 (38) 38.0
 
Sept. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 17.0 μg/m3 (16) 8.8 μg/m3 (37) 37.0
 
Sept. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 19.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 21.0 μg/m3 (20) 8.9 μg/m3 (38) 38.0
 
Sept. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 23.0 μg/m3 (22) 9.1 μg/m3 (38) 38.0
 
Sept. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 24.0 μg/m3 (23) 9.6 μg/m3 (40) 40.0
 
Sept. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 27.0 μg/m3 (25) 9.5 μg/m3 (40) 40.0
 
Sept. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 30.0 μg/m3 (28) 9.9 μg/m3 (42) 42.0
 
Sept. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 34.0 μg/m3 (32) 10.8 μg/m3 (46) 46.0
 
Sept. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 27.0 μg/m3 (25) 9.4 μg/m3 (40) 40.0
 
Sept. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 21.0 μg/m3 (20) 8.1 μg/m3 (34) 47.0
 
Sept. 18, 2021, midnight N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 21.0 μg/m3 (20) 7.8 μg/m3 (33) 51.0
 
Sept. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 22.0 μg/m3 (21) 8.1 μg/m3 (34) 61.0
 
Sept. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 27.0 μg/m3 (25) 8.5 μg/m3 (36) 68.0
 
Sept. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 15.0 μg/m3 (14) 6.7 μg/m3 (28) 48.0
 
Sept. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 20.0 μg/m3 (19) 7.1 μg/m3 (30) 43.0
 
Sept. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 18.0 μg/m3 (17) 7.2 μg/m3 (31) 38.0
 
Sept. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 22.0 μg/m3 (21) 7.6 μg/m3 (32) 40.0
 
Sept. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 42.0 μg/m3 (39) 7.9 μg/m3 (33) 39.0
 
Sept. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 26.0 μg/m3 (25) 6.6 μg/m3 (28) 34.0
 
Sept. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 40.0 μg/m3 (38) 7.7 μg/m3 (33) 38.0
 
Sept. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 33.0 μg/m3 (31) 7.3 μg/m3 (31) 31.0
 
Sept. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 24.0 μg/m3 (23) 6.2 μg/m3 (26) 26.0
 
Sept. 17, 2021, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 18.0 μg/m3 (17) 5.4 μg/m3 (23) 34.0
 
Sept. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 17.0 μg/m3 (16) 4.7 μg/m3 (20) 36.0
 
Sept. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 15.0 μg/m3 (14) 4.7 μg/m3 (20) 39.0
 
Sept. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 23.0 μg/m3 (22) 5.9 μg/m3 (25) 37.0
 
Sept. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 18.0 μg/m3 (17) 5.3 μg/m3 (23) 41.0
 
Sept. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 20.0 μg/m3 (19) 5.8 μg/m3 (25) 43.0
 
Sept. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 18.0 μg/m3 (17) 5.5 μg/m3 (23) 46.0
 
Sept. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 23.0 μg/m3 (22) 6.2 μg/m3 (26) 43.0
 
Sept. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 29.0 μg/m3 (27) 6.8 μg/m3 (29) 49.0
 
Sept. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 29.0 μg/m3 (27) 7.3 μg/m3 (31) 50.0
 
Sept. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 28.0 μg/m3 (26) 7.1 μg/m3 (30) 51.0
 
Sept. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 25.0 μg/m3 (24) 5.9 μg/m3 (25) 51.0
 
Sept. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 20.0 μg/m3 (19) 5.1 μg/m3 (22) 50.0
 
Sept. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 17.0 μg/m3 (16) 4.8 μg/m3 (20) 55.0
 
Sept. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 20.0 μg/m3 (19) 6.1 μg/m3 (26) 58.0
 
Sept. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 21.0 μg/m3 (20) 6.7 μg/m3 (28) 61.0
 
Sept. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 20.0 μg/m3 (19) 6.2 μg/m3 (26) 61.0
 
Sept. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A 19.0 μg/m3 (18) 6.1 μg/m3 (26) 74.0
 
Sept. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A 43.0 μg/m3 (40) 12.3 μg/m3 (52) 87.0
 
Sept. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 59.0 μg/m3 (53) 15.1 μg/m3 (58) 58.0
 
Sept. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 39.0 μg/m3 (37) 10.3 μg/m3 (43) 43.0
 
Sept. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 50.0 μg/m3 (47) 9.7 μg/m3 (41) 47.0
 
Sept. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 48.0 μg/m3 (45) 10.2 μg/m3 (43) 45.0
 
Sept. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 45.0 μg/m3 (42) 10.5 μg/m3 (44) 44.0
 
Sept. 16, 2021, noon N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 41.0 μg/m3 (38) 10.8 μg/m3 (46) 46.0
 
Sept. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 40.0 μg/m3 (38) 12.1 μg/m3 (51) 51.0
 
Sept. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 36.0 μg/m3 (34) 10.8 μg/m3 (46) 46.0
 
Sept. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 41.0 μg/m3 (38) 10.3 μg/m3 (43) 43.0
 
Sept. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 36.0 μg/m3 (34) 9.7 μg/m3 (41) 41.0
 
Sept. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 26.0 μg/m3 (25) 8.2 μg/m3 (35) 43.0
 
Sept. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 34.0 μg/m3 (32) 9.8 μg/m3 (41) 46.0
 
Sept. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 25.0 μg/m3 (24) 9.8 μg/m3 (41) 44.0
 
Sept. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 29.0 μg/m3 (27) 12.7 μg/m3 (53) 53.0
 
Sept. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 23.0 μg/m3 (22) 10.2 μg/m3 (43) 58.0
 
Sept. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 23.0 μg/m3 (22) 10.5 μg/m3 (44) 58.0
 
Sept. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 23.0 μg/m3 (22) 11.3 μg/m3 (48) 55.0
 
Sept. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 26.0 μg/m3 (25) 12.7 μg/m3 (53) 61.0
 
Sept. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A 29.0 μg/m3 (27) 12.6 μg/m3 (53) 74.0
 
Sept. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A 33.0 μg/m3 (31) 12.7 μg/m3 (53) 74.0
 
Sept. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A 30.0 μg/m3 (28) 12.1 μg/m3 (51) 91.0
 
Sept. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A 32.0 μg/m3 (30) 11.4 μg/m3 (48) 71.0
 
Sept. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 33.0 μg/m3 (31) 10.6 μg/m3 (45) 61.0
 
Sept. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 24.0 μg/m3 (23) 9.2 μg/m3 (39) 51.0
 
Sept. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 28.0 μg/m3 (26) 10.2 μg/m3 (43) 47.0