ID: 546

AQSQID: 320030071

Site Name: Walter Johnson

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

Updated: March 7, 2021, 5:32 a.m.

Location: Las Vegas (Villa Monterey Dr), NV

Reporting: True, Located: True

Current AQI: 39.0

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
March 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 24.3 μg/m3 (23) 8.0 μg/m3 (34) 39.0
 
March 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 19.2 μg/m3 (18) 5.0 μg/m3 (21) 47.0
 
March 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 21.5 μg/m3 (20) 4.9 μg/m3 (21) 49.0
 
March 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 16.5 μg/m3 (16) 4.4 μg/m3 (19) 55.0
 
March 7, 2021, midnight N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 13.2 μg/m3 (13) 3.7 μg/m3 (16) 58.0
 
March 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 14.0 μg/m3 (13) 3.6 μg/m3 (16) 61.0
 
March 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 13.9 μg/m3 (13) 3.7 μg/m3 (16) 61.0
 
March 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 16.0 μg/m3 (15) 3.6 μg/m3 (16) 51.0
 
March 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 18.3 μg/m3 (17) 3.6 μg/m3 (16) 51.0
 
March 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 18.2 μg/m3 (17) 4.1 μg/m3 (18) 50.0
 
March 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 23.1 μg/m3 (22) 4.9 μg/m3 (21) 50.0
 
March 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 31.0 μg/m3 (29) 7.9 μg/m3 (33) 34.0
 
March 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 31.1 μg/m3 (29) 8.0 μg/m3 (34) 34.0
 
March 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 21.0 μg/m3 (20) 5.4 μg/m3 (23) 24.0
 
March 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 15.8 μg/m3 (15) 4.3 μg/m3 (18) 22.0
 
March 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 15.5 μg/m3 (15) 4.0 μg/m3 (17) 23.0
 
March 6, 2021, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 12.4 μg/m3 (12) 3.6 μg/m3 (16) 25.0
 
March 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 12.0 μg/m3 (12) 3.7 μg/m3 (16) 26.0
 
March 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 14.0 μg/m3 (13) 4.3 μg/m3 (18) 25.0
 
March 6, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 13.9 μg/m3 (13) 3.9 μg/m3 (17) 34.0
 
March 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 14.6 μg/m3 (14) 3.8 μg/m3 (16) 36.0
 
March 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 12.5 μg/m3 (12) 3.6 μg/m3 (16) 36.0
 
March 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 16.5 μg/m3 (16) 4.6 μg/m3 (20) 34.0
 
March 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 14.5 μg/m3 (14) 4.9 μg/m3 (21) 36.0
 
March 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 17.0 μg/m3 (16) 5.7 μg/m3 (24) 33.0
 
March 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 23.5 μg/m3 (22) 6.3 μg/m3 (27) 31.0
 
March 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 32.2 μg/m3 (30) 7.8 μg/m3 (33) 33.0
 
March 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 17.8 μg/m3 (17) 4.0 μg/m3 (17) 45.0
 
March 6, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 16.5 μg/m3 (16) 3.8 μg/m3 (16) 48.0
 
March 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 16.8 μg/m3 (16) 3.9 μg/m3 (17) 48.0
 
March 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 17.2 μg/m3 (16) 4.4 μg/m3 (19) 50.0
 
March 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 22.1 μg/m3 (21) 5.5 μg/m3 (23) 46.0
 
March 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 28.0 μg/m3 (26) 8.2 μg/m3 (35) 49.0
 
March 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 33.9 μg/m3 (32) 9.9 μg/m3 (42) 43.0
 
March 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 32.2 μg/m3 (30) 9.2 μg/m3 (39) 41.0
 
March 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 32.5 μg/m3 (31) 9.0 μg/m3 (38) 38.0
 
March 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 28.7 μg/m3 (27) 7.6 μg/m3 (32) 32.0
 
March 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 37.5 μg/m3 (35) 7.2 μg/m3 (31) 35.0
 
March 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 21.0 μg/m3 (20) 5.8 μg/m3 (25) 27.0
 
March 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 23.2 μg/m3 (22) 7.1 μg/m3 (30) 30.0
 
March 5, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 24.8 μg/m3 (23) 8.9 μg/m3 (38) 38.0
 
March 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 24.1 μg/m3 (23) 8.4 μg/m3 (36) 36.0
 
March 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 24.2 μg/m3 (23) 7.4 μg/m3 (31) 31.0
 
March 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 30.9 μg/m3 (29) 8.9 μg/m3 (38) 38.0
 
March 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 25.0 μg/m3 (24) 7.9 μg/m3 (33) 33.0
 
March 5, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 20.4 μg/m3 (19) 5.7 μg/m3 (24) 29.0
 
March 5, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 25.6 μg/m3 (24) 7.2 μg/m3 (31) 31.0
 
March 5, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 29.3 μg/m3 (28) 7.4 μg/m3 (31) 36.0
 
March 5, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 31.1 μg/m3 (29) 9.1 μg/m3 (38) 38.0
 
March 5, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 42.1 μg/m3 (39) 15.5 μg/m3 (59) 59.0
 
March 5, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 37.4 μg/m3 (35) 9.9 μg/m3 (42) 42.0
 
March 5, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 35.5 μg/m3 (33) 9.1 μg/m3 (38) 41.0
 
March 5, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 32.2 μg/m3 (30) 7.5 μg/m3 (32) 48.0
 
March 4, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 31.5 μg/m3 (30) 6.9 μg/m3 (29) 48.0
 
March 4, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 32.9 μg/m3 (31) 7.6 μg/m3 (32) 48.0
 
March 4, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 33.1 μg/m3 (31) 7.3 μg/m3 (31) 47.0
 
March 4, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 30.9 μg/m3 (29) 7.3 μg/m3 (31) 48.0
 
March 4, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 25.7 μg/m3 (24) 7.2 μg/m3 (31) 46.0
 
March 4, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 34.6 μg/m3 (33) 7.3 μg/m3 (31) 38.0
 
March 4, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 30.5 μg/m3 (29) 5.5 μg/m3 (23) 38.0
 
March 4, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 19.4 μg/m3 (18) 4.7 μg/m3 (20) 40.0
 
March 4, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 19.8 μg/m3 (19) 5.1 μg/m3 (22) 31.0
 
March 4, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 17.1 μg/m3 (16) 4.7 μg/m3 (20) 22.0
 
March 4, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 15.8 μg/m3 (15) 4.1 μg/m3 (18) 26.0
 
March 4, 2021, noon N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 15.3 μg/m3 (15) 4.0 μg/m3 (17) 30.0
 
March 4, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 13.4 μg/m3 (13) 3.6 μg/m3 (16) 36.0
 
March 4, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 15.6 μg/m3 (15) 4.2 μg/m3 (18) 36.0
 
March 4, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 14.5 μg/m3 (14) 3.9 μg/m3 (17) 39.0
 
March 4, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 8.5 μg/m3 (8) 2.8 μg/m3 (12) 45.0
 
March 4, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 13.6 μg/m3 (13) 3.3 μg/m3 (14) 49.0
 
March 4, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 13.9 μg/m3 (13) 3.9 μg/m3 (17) 48.0
 
March 4, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 29.4 μg/m3 (28) 6.0 μg/m3 (25) 48.0
 
March 4, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 30.3 μg/m3 (29) 6.3 μg/m3 (27) 49.0
 
March 4, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 48.1 μg/m3 (45) 8.3 μg/m3 (35) 50.0
 
March 4, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 44.4 μg/m3 (42) 7.3 μg/m3 (31) 49.0
 
March 4, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 47.6 μg/m3 (45) 6.5 μg/m3 (28) 50.0
 
March 4, 2021, midnight N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 47.5 μg/m3 (44) 5.6 μg/m3 (24) 49.0
 
March 3, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 28.6 μg/m3 (27) 5.0 μg/m3 (21) 48.0
 
March 3, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 29.3 μg/m3 (28) 5.0 μg/m3 (21) 49.0
 
March 3, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 27.4 μg/m3 (26) 5.3 μg/m3 (23) 43.0
 
March 3, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 28.3 μg/m3 (27) 5.7 μg/m3 (24) 40.0
 
March 3, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 27.8 μg/m3 (26) 5.5 μg/m3 (23) 38.0
 
March 3, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 31.9 μg/m3 (30) 5.5 μg/m3 (23) 35.0
 
March 3, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 24.9 μg/m3 (24) 4.7 μg/m3 (20) 31.0
 
March 3, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 19.1 μg/m3 (18) 4.4 μg/m3 (19) 35.0
 
March 3, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 21.8 μg/m3 (21) 4.8 μg/m3 (20) 26.0
 
March 3, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 14.5 μg/m3 (14) 4.5 μg/m3 (19) 22.0
 
March 3, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 13.7 μg/m3 (13) 4.3 μg/m3 (18) 23.0
 
March 3, 2021, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 14.5 μg/m3 (14) 4.1 μg/m3 (18) 25.0
 
March 3, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 14.0 μg/m3 (13) 3.9 μg/m3 (17) 26.0
 
March 3, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 14.0 μg/m3 (13) 3.9 μg/m3 (17) 31.0
 
March 3, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 16.0 μg/m3 (15) 4.2 μg/m3 (18) 33.0
 
March 3, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 18.5 μg/m3 (18) 4.8 μg/m3 (20) 34.0
 
March 3, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 17.5 μg/m3 (17) 4.6 μg/m3 (20) 35.0
 
March 3, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 19.8 μg/m3 (19) 5.5 μg/m3 (23) 35.0
 
March 3, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 23.9 μg/m3 (23) 7.4 μg/m3 (31) 33.0
 
March 3, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 22.2 μg/m3 (21) 6.8 μg/m3 (29) 32.0
 
March 3, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 28.5 μg/m3 (27) 7.4 μg/m3 (31) 31.0
 
March 3, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 28.1 μg/m3 (27) 7.5 μg/m3 (32) 32.0
 
March 3, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 19.5 μg/m3 (19) 4.8 μg/m3 (20) 43.0
 
March 3, 2021, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 21.0 μg/m3 (20) 4.5 μg/m3 (19) 45.0
 
March 2, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 19.6 μg/m3 (19) 4.4 μg/m3 (19) 45.0
 
March 2, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 18.2 μg/m3 (17) 4.4 μg/m3 (19) 46.0
 
March 2, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 17.9 μg/m3 (17) 4.2 μg/m3 (18) 42.0
 
March 2, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 16.3 μg/m3 (16) 4.1 μg/m3 (18) 38.0
 
March 2, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 16.1 μg/m3 (15) 4.0 μg/m3 (17) 37.0
 
March 2, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 12.7 μg/m3 (12) 3.4 μg/m3 (15) 35.0
 
March 2, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 12.3 μg/m3 (12) 3.7 μg/m3 (16) 36.0
 
March 2, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 16.0 μg/m3 (15) 3.8 μg/m3 (16) 32.0
 
March 2, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 19.3 μg/m3 (18) 3.8 μg/m3 (16) 26.0
 
March 2, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 9.0 μg/m3 (9) 2.7 μg/m3 (12) 27.0
 
March 2, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 8.2 μg/m3 (8) 3.0 μg/m3 (13) 27.0
 
March 2, 2021, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 7.1 μg/m3 (7) 2.4 μg/m3 (10) 31.0
 
March 2, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 8.4 μg/m3 (8) 2.5 μg/m3 (11) 32.0
 
March 2, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 8.1 μg/m3 (8) 2.7 μg/m3 (12) 32.0
 
March 2, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 8.6 μg/m3 (8) 2.9 μg/m3 (13) 31.0
 
March 2, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.4 μg/m3 (15) 3.9 μg/m3 (17) 17.0
 
March 2, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 12.8 μg/m3 (12) 4.0 μg/m3 (17) 28.0
 
March 2, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 17.5 μg/m3 (17) 5.2 μg/m3 (22) 27.0
 
March 2, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 12.5 μg/m3 (12) 4.3 μg/m3 (18) 30.0
 
March 2, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 13.5 μg/m3 (13) 5.2 μg/m3 (22) 32.0
 
March 2, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 24.5 μg/m3 (23) 8.7 μg/m3 (37) 37.0
 
March 2, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 18.9 μg/m3 (18) 5.1 μg/m3 (22) 29.0
 
March 2, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 13.9 μg/m3 (13) 4.1 μg/m3 (18) 41.0
 
March 2, 2021, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 14.0 μg/m3 (13) 4.3 μg/m3 (18) 44.0
 
March 1, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 12.3 μg/m3 (12) 3.7 μg/m3 (16) 46.0
 
March 1, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 10.6 μg/m3 (10) 3.5 μg/m3 (15) 47.0
 
March 1, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 13.0 μg/m3 (13) 3.2 μg/m3 (14) 44.0
 
March 1, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 12.7 μg/m3 (12) 3.0 μg/m3 (13) 41.0
 
March 1, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 13.0 μg/m3 (13) 2.8 μg/m3 (12) 40.0
 
March 1, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 14.6 μg/m3 (14) 3.3 μg/m3 (14) 34.0
 
March 1, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 12.3 μg/m3 (12) 3.4 μg/m3 (15) 30.0
 
March 1, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 10.6 μg/m3 (10) 3.2 μg/m3 (14) 34.0
 
March 1, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 10.3 μg/m3 (10) 2.8 μg/m3 (12) 28.0
 
March 1, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 6.1 μg/m3 (6) 2.3 μg/m3 (10) 21.0
 
March 1, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 8.2 μg/m3 (8) 2.2 μg/m3 (10) 16.0
 
March 1, 2021, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 6.6 μg/m3 (7) 2.4 μg/m3 (10) 17.0
 
March 1, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 5.5 μg/m3 (6) 2.1 μg/m3 (9) 29.0
 
March 1, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 5.9 μg/m3 (6) 2.0 μg/m3 (9) 25.0
 
March 1, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 7.1 μg/m3 (7) 2.3 μg/m3 (10) 23.0
 
March 1, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 10.0 μg/m3 (10) 3.0 μg/m3 (13) 22.0
 
March 1, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 8.7 μg/m3 (9) 3.4 μg/m3 (15) 25.0
 
March 1, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 11.2 μg/m3 (11) 4.3 μg/m3 (18) 26.0
 
March 1, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 17.1 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
March 1, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 17.3 μg/m3 (17) 8.2 μg/m3 (35) 35.0
 
March 1, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 16.7 μg/m3 (16) 7.4 μg/m3 (31) 31.0
 
March 1, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 15.5 μg/m3 (15) 4.8 μg/m3 (20) 33.0
 
March 1, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 9.8 μg/m3 (10) 2.9 μg/m3 (13) 40.0
 
March 1, 2021, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 6.6 μg/m3 (7) 1.9 μg/m3 (8) 44.0
 
Feb. 28, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 3.4 μg/m3 (4) 1.6 μg/m3 (7) 45.0
 
Feb. 28, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 2.9 μg/m3 (3) 1.4 μg/m3 (6) 45.0
 
Feb. 28, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 3.8 μg/m3 (4) 1.0 μg/m3 (5) 45.0
 
Feb. 28, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 3.2 μg/m3 (3) 1.0 μg/m3 (5) 44.0
 
Feb. 28, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 4.1 μg/m3 (4) 0.9 μg/m3 (4) 44.0
 
Feb. 28, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 2.7 μg/m3 (3) 1.1 μg/m3 (5) 43.0
 
Feb. 28, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 2.8 μg/m3 (3) 1.3 μg/m3 (6) 43.0
 
Feb. 28, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 5.4 μg/m3 (5) 1.1 μg/m3 (5) 43.0
 
Feb. 28, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 4.0 μg/m3 (4) 0.8 μg/m3 (4) 42.0
 
Feb. 28, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 2.9 μg/m3 (3) 0.9 μg/m3 (4) 42.0
 
Feb. 28, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 3.3 μg/m3 (4) 0.9 μg/m3 (4) 42.0
 
Feb. 28, 2021, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 5.3 μg/m3 (5) 1.9 μg/m3 (8) 42.0
 
Feb. 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 3.0 μg/m3 (3) 0.7 μg/m3 (3) 43.0
 
Feb. 28, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 3.3 μg/m3 (4) 0.7 μg/m3 (3) 43.0
 
Feb. 28, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 5.3 μg/m3 (5) 1.0 μg/m3 (5) 43.0
 
Feb. 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 5.2 μg/m3 (5) 0.7 μg/m3 (3) 43.0
 
Feb. 28, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 4.7 μg/m3 (5) 1.0 μg/m3 (5) 44.0
 
Feb. 28, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 5.2 μg/m3 (5) 1.1 μg/m3 (5) 43.0
 
Feb. 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 12.1 μg/m3 (12) 1.8 μg/m3 (8) 44.0