ID: 260

AQSQID: 080590011

Site Name: Golden - Nrel - 2054 Quaker St.

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

Updated: March 4, 2021, 12:32 a.m.

Location: Golden (Applewood), CO

Reporting: True, Located: True

Current AQI: 40.0

Golden (Applewood) CO, US: 39.7419, -105.1786

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 39.0
 
Feb. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A N/A 35.0
 
Feb. 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 24, 2021, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Feb. 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 39.0
 
Feb. 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 24, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A N/A 48.0
 
Feb. 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A N/A 48.0
 
Feb. 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A N/A 47.0
 
Feb. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A N/A 45.0
 
Feb. 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A N/A 46.0
 
Feb. 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Feb. 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
Feb. 23, 2021, noon N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 39.0
 
Feb. 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 23, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 22, 2021, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 21, 2021, noon N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Feb. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
Feb. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
Feb. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Feb. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 21, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Feb. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 39.0
 
Feb. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A N/A 35.0
 
Feb. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 20, 2021, noon N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A N/A 27.0
 
Feb. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 26.0
 
Feb. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Feb. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Feb. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 39.0
 
Feb. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 39.0
 
Feb. 20, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 39.0
 
Feb. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A N/A 41.0
 
Feb. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A N/A 45.0
 
Feb. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A N/A 46.0
 
Feb. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A N/A 35.0
 
Feb. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A N/A 43.0
 
Feb. 19, 2021, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Feb. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A N/A 39.0
 
Feb. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A N/A 35.0
 
Feb. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A N/A 30.0
 
Feb. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Feb. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A N/A 24.0
 
Feb. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A N/A 30.0
 
Feb. 19, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Feb. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A N/A 35.0
 
Feb. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Feb. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
Feb. 18, 2021, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Feb. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 29.0
 
Feb. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
Feb. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Feb. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Feb. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A N/A 37.0
 
Feb. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A N/A 36.0
 
Feb. 18, 2021, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
Feb. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
Feb. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A N/A 30.0
 
Feb. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 29.0