ID: 1649

AQSQID: 000091101

Site Name: Elk Island

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

Updated: May 12, 2021, 3:44 a.m.

Location: Improvement Dist No. 13 (Rng Rd 203 Rng Rd), CC

Reporting: True, Located: True

Current AQI: 40.0

Improvement Dist No. 13 (Rng Rd 203 Rng Rd) CC, CA: 53.6825, -112.8686

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 12, 2021, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.4 μg/m3 (15) 40.0
 
May 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.5 μg/m3 (15) 38.0
 
May 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 2.4 μg/m3 (10) 41.0
 
May 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 2.1 μg/m3 (9) 41.0
 
May 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 3.4 μg/m3 (15) 41.0
 
May 11, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.9 μg/m3 (13) 40.0
 
May 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 2.1 μg/m3 (9) 38.0
 
May 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 2.6 μg/m3 (11) 37.0
 
May 11, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 3.1 μg/m3 (13) 29.0
 
May 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 3.9 μg/m3 (17) 23.0
 
May 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 2.8 μg/m3 (12) 23.0
 
May 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 3.2 μg/m3 (14) 22.0
 
May 11, 2021, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 3.1 μg/m3 (13) 22.0
 
May 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 3.3 μg/m3 (14) 23.0
 
May 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 4.0 μg/m3 (17) 23.0
 
May 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 4.8 μg/m3 (20) 24.0
 
May 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 4.6 μg/m3 (20) 30.0
 
May 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 3.7 μg/m3 (16) 33.0
 
May 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.8 μg/m3 (16) 36.0
 
May 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 3.9 μg/m3 (17) 35.0
 
May 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.1 μg/m3 (18) 38.0
 
May 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 3.2 μg/m3 (14) 39.0
 
May 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 2.5 μg/m3 (11) 43.0
 
May 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 3.3 μg/m3 (14) 46.0
 
May 11, 2021, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.2 μg/m3 (14) 47.0
 
May 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 2.2 μg/m3 (10) 46.0
 
May 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 1.8 μg/m3 (8) 44.0
 
May 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 1.6 μg/m3 (7) 42.0
 
May 10, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 2.6 μg/m3 (11) 42.0
 
May 10, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 3.3 μg/m3 (14) 41.0
 
May 10, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 3.5 μg/m3 (15) 39.0
 
May 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.4 μg/m3 (19) 38.0
 
May 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 5.2 μg/m3 (22) 38.0
 
May 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 7.7 μg/m3 (33) 38.0
 
May 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 9.5 μg/m3 (40) 40.0
 
May 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 8.3 μg/m3 (35) 35.0
 
May 10, 2021, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 7.2 μg/m3 (31) 31.0
 
May 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 6.8 μg/m3 (29) 30.0
 
May 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 6.3 μg/m3 (27) 31.0
 
May 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
May 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 6.4 μg/m3 (27) 32.0
 
May 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 6.7 μg/m3 (28) 32.0
 
May 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 7.1 μg/m3 (30) 33.0
 
May 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 6.6 μg/m3 (28) 33.0
 
May 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 6.6 μg/m3 (28) 37.0
 
May 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 7.5 μg/m3 (32) 44.0
 
May 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 6.6 μg/m3 (28) 47.0
 
May 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 5.6 μg/m3 (24) 49.0
 
May 10, 2021, midnight N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 5.6 μg/m3 (24) 49.0
 
May 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 5.3 μg/m3 (23) 50.0
 
May 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 5.0 μg/m3 (21) 49.0
 
May 9, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 4.6 μg/m3 (20) 48.0
 
May 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 4.8 μg/m3 (20) 48.0
 
May 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 5.4 μg/m3 (23) 47.0
 
May 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 5.9 μg/m3 (25) 46.0
 
May 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 6.7 μg/m3 (28) 44.0
 
May 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 6.4 μg/m3 (27) 39.0
 
May 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 6.9 μg/m3 (29) 37.0
 
May 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.0 μg/m3 (34) 34.0
 
May 9, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 4.7 μg/m3 (20) 20.0
 
May 9, 2021, noon N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 4.1 μg/m3 (18) 18.0
 
May 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 4.3 μg/m3 (18) 19.0
 
May 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 4.4 μg/m3 (19) 25.0
 
May 9, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 4.3 μg/m3 (18) 30.0
 
May 9, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 4.5 μg/m3 (19) 32.0
 
May 9, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 4.6 μg/m3 (20) 32.0
 
May 9, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 4.8 μg/m3 (20) 30.0
 
May 9, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 4.8 μg/m3 (20) 36.0
 
May 9, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.9 μg/m3 (21) 38.0
 
May 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.9 μg/m3 (21) 38.0
 
May 9, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.4 μg/m3 (19) 38.0
 
May 9, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 4.3 μg/m3 (18) 42.0
 
May 9, 2021, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.3 μg/m3 (18) 43.0
 
May 8, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.8 μg/m3 (20) 43.0
 
May 8, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 4.8 μg/m3 (20) 42.0
 
May 8, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 4.8 μg/m3 (20) 40.0
 
May 8, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 5.2 μg/m3 (22) 39.0
 
May 8, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.1 μg/m3 (22) 37.0
 
May 8, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.8 μg/m3 (20) 38.0
 
May 8, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 5.2 μg/m3 (22) 36.0
 
May 8, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 4.8 μg/m3 (20) 36.0
 
May 8, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.1 μg/m3 (18) 37.0
 
May 8, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
May 8, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.2 μg/m3 (18) 38.0
 
May 8, 2021, noon N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.4 μg/m3 (19) 38.0
 
May 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.8 μg/m3 (20) 38.0
 
May 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.7 μg/m3 (20) 38.0
 
May 8, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 5.2 μg/m3 (22) 38.0
 
May 8, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 5.6 μg/m3 (24) 38.0
 
May 8, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 5.6 μg/m3 (24) 38.0
 
May 8, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.5 μg/m3 (23) 38.0
 
May 8, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.6 μg/m3 (24) 38.0
 
May 8, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 5.6 μg/m3 (24) 38.0
 
May 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 5.6 μg/m3 (24) 38.0
 
May 8, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.8 μg/m3 (25) 37.0
 
May 8, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 5.8 μg/m3 (25) 39.0
 
May 8, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 6.1 μg/m3 (26) 42.0
 
May 7, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 6.9 μg/m3 (29) 42.0
 
May 7, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 7.3 μg/m3 (31) 43.0
 
May 7, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 6.4 μg/m3 (27) 43.0
 
May 7, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 5.9 μg/m3 (25) 39.0
 
May 7, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 5.1 μg/m3 (22) 39.0
 
May 7, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 5.8 μg/m3 (25) 39.0
 
May 7, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 11.5 μg/m3 (48) 48.0
 
May 7, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 18.8 μg/m3 (66) 66.0
 
May 7, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 7.6 μg/m3 (32) 38.0
 
May 7, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.6 μg/m3 (20) 37.0
 
May 7, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 5.2 μg/m3 (22) 36.0
 
May 7, 2021, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.9 μg/m3 (25) 34.0
 
May 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 6.5 μg/m3 (28) 35.0
 
May 7, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 4.9 μg/m3 (21) 36.0
 
May 7, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 6.4 μg/m3 (27) 37.0
 
May 7, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 8.1 μg/m3 (34) 38.0
 
May 7, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 6.9 μg/m3 (29) 38.0
 
May 7, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
May 7, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 5.9 μg/m3 (25) 38.0
 
May 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 5.3 μg/m3 (23) 42.0
 
May 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 5.1 μg/m3 (22) 44.0
 
May 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 4.4 μg/m3 (19) 45.0
 
May 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.9 μg/m3 (17) 47.0
 
May 7, 2021, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.7 μg/m3 (16) 47.0
 
May 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.6 μg/m3 (16) 47.0
 
May 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.5 μg/m3 (15) 47.0
 
May 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 3.5 μg/m3 (15) 48.0
 
May 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.6 μg/m3 (16) 47.0
 
May 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.9 μg/m3 (17) 47.0
 
May 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 3.7 μg/m3 (16) 46.0
 
May 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 4.2 μg/m3 (18) 44.0
 
May 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 4.9 μg/m3 (21) 41.0
 
May 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 4.2 μg/m3 (18) 39.0
 
May 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.9 μg/m3 (17) 38.0
 
May 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 3.9 μg/m3 (17) 38.0
 
May 6, 2021, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.6 μg/m3 (20) 37.0
 
May 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.9 μg/m3 (21) 37.0
 
May 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.8 μg/m3 (20) 37.0
 
May 6, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 4.6 μg/m3 (20) 33.0
 
May 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 4.7 μg/m3 (20) 28.0
 
May 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 4.9 μg/m3 (21) 30.0
 
May 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 5.4 μg/m3 (23) 28.0
 
May 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 5.7 μg/m3 (24) 31.0
 
May 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 5.8 μg/m3 (25) 31.0
 
May 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.2 μg/m3 (18) 38.0
 
May 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.9 μg/m3 (17) 40.0
 
May 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 3.9 μg/m3 (17) 42.0
 
May 6, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 3.8 μg/m3 (16) 42.0
 
May 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
May 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 4.3 μg/m3 (18) 42.0
 
May 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 4.1 μg/m3 (18) 41.0
 
May 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 4.5 μg/m3 (19) 40.0
 
May 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 4.2 μg/m3 (18) 39.0
 
May 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.8 μg/m3 (16) 40.0
 
May 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 3.6 μg/m3 (16) 39.0
 
May 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 3.0 μg/m3 (13) 35.0
 
May 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 3.0 μg/m3 (13) 26.0
 
May 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 3.4 μg/m3 (15) 22.0
 
May 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 2.9 μg/m3 (13) 21.0
 
May 5, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 2.4 μg/m3 (10) 21.0
 
May 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 3.2 μg/m3 (14) 20.0
 
May 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 2.5 μg/m3 (11) 23.0
 
May 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 3.1 μg/m3 (13) 23.0
 
May 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 3.9 μg/m3 (17) 23.0
 
May 5, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 4.4 μg/m3 (19) 25.0
 
May 5, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 5.7 μg/m3 (24) 26.0
 
May 5, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.6 μg/m3 (24) 33.0
 
May 5, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.2 μg/m3 (22) 37.0
 
May 5, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.3 μg/m3 (18) 38.0
 
May 5, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.7 μg/m3 (16) 40.0
 
May 5, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 3.6 μg/m3 (16) 41.0