ID: 250

AQSQID: 080013001

Site Name: Welby - 78th Ave. & Steele St.

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

Updated: Oct. 29, 2020, 6:39 a.m.

Location: Denver (Steele St), CO

Reporting: True, Located: True

Current AQI: 24.0

Denver (Steele St) CO, US: 39.8392, -104.9489

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Oct. 29, 2020, 5 a.m. N/A N/A N/A 25.0 ppb (24) N/A 0.0 ppb (0) 3.0 ppb (3) 0.39 ppb (5) 8.9 μg/m3 (9) N/A 24.0
 
Oct. 29, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) 0.54 ppb (6) 28.4 μg/m3 (27) N/A 27.0
 
Oct. 29, 2020, 3 a.m. N/A N/A N/A 31.0 ppb (30) N/A 0.0 ppb (0) 2.0 ppb (2) 1.37 ppb (16) 25.3 μg/m3 (24) N/A 30.0
 
Oct. 29, 2020, 2 a.m. N/A N/A N/A 29.0 ppb (28) N/A 0.0 ppb (0) 6.0 ppb (6) 1.18 ppb (14) 13.3 μg/m3 (13) N/A 28.0
 
Oct. 29, 2020, 1 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 17.0 ppb (16) 0.53 ppb (6) 27.7 μg/m3 (26) N/A 26.0
 
Oct. 29, 2020, midnight N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 27.0 ppb (25) 0.27 ppb (4) 28.2 μg/m3 (27) N/A 27.0
 
Oct. 28, 2020, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (35) 0.23 ppb (3) 19.2 μg/m3 (18) N/A 35.0
 
Oct. 28, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (37) 0.2 ppb (3) 12.5 μg/m3 (12) N/A 37.0
 
Oct. 28, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.15 ppb (2) 18.1 μg/m3 (17) N/A 37.0
 
Oct. 28, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.15 ppb (2) 23.6 μg/m3 (22) N/A 36.0
 
Oct. 28, 2020, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) 0.1 ppb (2) 19.2 μg/m3 (18) N/A 35.0
 
Oct. 28, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.1 ppb (2) 16.7 μg/m3 (16) N/A 34.0
 
Oct. 28, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) 0.1 ppb (2) 20.3 μg/m3 (19) N/A 32.0
 
Oct. 28, 2020, 4 p.m. N/A N/A N/A 24.0 ppb (23) N/A N/A 22.0 ppb (21) 0.3 ppb (4) 51.7 μg/m3 (48) N/A 48.0
 
Oct. 28, 2020, 3 p.m. N/A N/A N/A 39.0 ppb (37) N/A N/A 8.0 ppb (8) 0.6 ppb (7) 66.1 μg/m3 (57) N/A 57.0
 
Oct. 28, 2020, 2 p.m. N/A N/A N/A 40.0 ppb (38) N/A 1.0 ppb (2) N/A N/A 49.7 μg/m3 (47) N/A 47.0
 
Oct. 28, 2020, 1 p.m. N/A N/A N/A 45.0 ppb (43) N/A 1.0 ppb (2) 2.0 ppb (2) 0.7 ppb (8) 31.7 μg/m3 (30) N/A 43.0
 
Oct. 28, 2020, noon N/A N/A N/A 45.0 ppb (43) N/A 1.0 ppb (2) N/A 0.6 ppb (7) 18.7 μg/m3 (18) N/A 43.0
 
Oct. 28, 2020, 11 a.m. N/A N/A N/A 43.0 ppb (41) N/A 1.0 ppb (2) N/A 0.5 ppb (6) 13.5 μg/m3 (13) N/A 41.0
 
Oct. 28, 2020, 10 a.m. N/A N/A N/A 41.0 ppb (39) N/A 1.0 ppb (2) N/A 0.5 ppb (6) 13.9 μg/m3 (13) N/A 39.0
 
Oct. 28, 2020, 9 a.m. N/A N/A N/A 43.0 ppb (41) N/A 1.0 ppb (2) N/A 0.5 ppb (6) 8.9 μg/m3 (9) N/A 41.0
 
Oct. 28, 2020, 8 a.m. N/A N/A N/A 46.0 ppb (44) N/A 1.0 ppb (2) N/A 0.7 ppb (8) 20.7 μg/m3 (20) N/A 44.0
 
Oct. 28, 2020, 7 a.m. N/A N/A N/A 50.0 ppb (48) N/A 1.0 ppb (2) 1.0 ppb (1) 0.9 ppb (11) 22.7 μg/m3 (22) N/A 48.0
 
Oct. 28, 2020, 6 a.m. N/A N/A N/A 49.0 ppb (47) N/A 2.0 ppb (3) 1.0 ppb (1) N/A 35.8 μg/m3 (34) N/A 47.0
 
Oct. 28, 2020, 5 a.m. N/A N/A N/A 51.0 ppb (49) N/A 1.0 ppb (2) 1.0 ppb (1) 1.4 ppb (16) 46.1 μg/m3 (43) N/A 49.0
 
Oct. 28, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 1.0 ppb (1) 1.3 ppb (15) 41.1 μg/m3 (39) N/A 39.0
 
Oct. 28, 2020, 3 a.m. N/A N/A N/A 57.0 ppb (55) N/A 1.0 ppb (2) 1.0 ppb (1) 1.1 ppb (13) 46.9 μg/m3 (44) N/A 55.0
 
Oct. 28, 2020, 2 a.m. N/A N/A N/A 56.0 ppb (54) N/A 0.0 ppb (0) 1.0 ppb (1) 1.2 ppb (14) 42.3 μg/m3 (40) N/A 54.0
 
Oct. 28, 2020, 1 a.m. N/A N/A N/A 47.0 ppb (45) N/A 0.0 ppb (0) 9.0 ppb (9) 1.2 ppb (14) 53.5 μg/m3 (50) N/A 50.0
 
Oct. 28, 2020, midnight N/A N/A N/A 31.0 ppb (30) N/A 0.0 ppb (0) 31.0 ppb (29) 0.4 ppb (5) 28.0 μg/m3 (26) N/A 30.0
 
Oct. 27, 2020, 11 p.m. N/A N/A N/A 24.0 ppb (23) N/A 0.0 ppb (0) 38.0 ppb (36) 0.3 ppb (4) 45.2 μg/m3 (42) N/A 42.0
 
Oct. 27, 2020, 10 p.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 47.0 ppb (44) 0.3 ppb (4) 45.3 μg/m3 (42) N/A 44.0
 
Oct. 27, 2020, 9 p.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 50.0 ppb (47) 0.2 ppb (3) 51.0 μg/m3 (48) N/A 48.0
 
Oct. 27, 2020, 8 p.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 30.3 μg/m3 (29) N/A 47.0
 
Oct. 27, 2020, 7 p.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 48.0 ppb (45) N/A 27.0 μg/m3 (25) N/A 45.0
 
Oct. 27, 2020, 6 p.m. N/A N/A N/A 17.0 ppb (17) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 25.6 μg/m3 (24) N/A 38.0
 
Oct. 27, 2020, 5 p.m. N/A N/A N/A 32.0 ppb (31) N/A 2.0 ppb (3) 28.0 ppb (26) N/A 36.1 μg/m3 (34) N/A 34.0
 
Oct. 27, 2020, 4 p.m. N/A N/A N/A 32.0 ppb (31) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 48.6 μg/m3 (45) N/A 45.0
 
Oct. 27, 2020, 3 p.m. N/A N/A N/A 28.0 ppb (27) N/A 1.0 ppb (2) 21.0 ppb (20) 0.3 ppb (4) 38.9 μg/m3 (37) N/A 37.0
 
Oct. 27, 2020, 2 p.m. N/A N/A N/A 32.0 ppb (31) N/A 1.0 ppb (2) 13.0 ppb (13) 0.4 ppb (5) 17.1 μg/m3 (16) N/A 31.0
 
Oct. 27, 2020, 1 p.m. N/A N/A N/A 45.0 ppb (43) N/A 2.0 ppb (3) 2.0 ppb (2) 0.8 ppb (10) 26.6 μg/m3 (25) N/A 43.0
 
Oct. 27, 2020, noon N/A N/A N/A 40.0 ppb (38) N/A 2.0 ppb (3) N/A 0.7 ppb (8) 19.5 μg/m3 (19) N/A 38.0
 
Oct. 27, 2020, 11 a.m. N/A N/A N/A 34.0 ppb (33) N/A 1.0 ppb (2) N/A 0.5 ppb (6) 14.9 μg/m3 (14) N/A 33.0
 
Oct. 27, 2020, 10 a.m. N/A N/A N/A 35.0 ppb (34) N/A 1.0 ppb (2) 1.0 ppb (1) 0.4 ppb (5) 12.2 μg/m3 (12) N/A 34.0
 
Oct. 27, 2020, 9 a.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 1.0 ppb (1) 0.3 ppb (4) 14.7 μg/m3 (14) N/A 32.0
 
Oct. 27, 2020, 8 a.m. N/A N/A N/A 35.0 ppb (34) N/A 0.0 ppb (0) 1.0 ppb (1) 0.3 ppb (4) 8.3 μg/m3 (8) N/A 34.0
 
Oct. 27, 2020, 7 a.m. N/A N/A N/A 34.0 ppb (33) N/A 1.0 ppb (2) 1.0 ppb (1) 0.4 ppb (5) 13.2 μg/m3 (13) N/A 33.0
 
Oct. 27, 2020, 6 a.m. N/A N/A N/A 34.0 ppb (33) N/A 0.0 ppb (0) 1.0 ppb (1) 0.3 ppb (4) 12.0 μg/m3 (12) N/A 33.0
 
Oct. 27, 2020, 5 a.m. N/A N/A N/A 37.0 ppb (35) N/A 0.0 ppb (0) 1.0 ppb (1) 0.6 ppb (7) 18.4 μg/m3 (18) N/A 35.0
 
Oct. 27, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) 1.0 ppb (12) 22.6 μg/m3 (21) N/A 21.0
 
Oct. 27, 2020, 3 a.m. N/A N/A N/A 37.0 ppb (35) N/A 0.0 ppb (0) 2.0 ppb (2) 1.2 ppb (14) 17.7 μg/m3 (17) N/A 35.0
 
Oct. 27, 2020, 2 a.m. N/A N/A N/A 39.0 ppb (37) N/A 0.0 ppb (0) 2.0 ppb (2) 1.0 ppb (12) 20.0 μg/m3 (19) N/A 37.0
 
Oct. 27, 2020, 1 a.m. N/A N/A N/A 31.0 ppb (30) N/A 0.0 ppb (0) 8.0 ppb (8) 0.5 ppb (6) 18.4 μg/m3 (18) N/A 30.0
 
Oct. 27, 2020, midnight N/A N/A N/A 26.0 ppb (25) N/A 0.0 ppb (0) 14.0 ppb (13) 0.3 ppb (4) 21.0 μg/m3 (20) N/A 25.0
 
Oct. 26, 2020, 11 p.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) 13.1 μg/m3 (13) N/A 20.0
 
Oct. 26, 2020, 10 p.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 28.0 ppb (26) 0.2 ppb (3) 16.2 μg/m3 (15) N/A 26.0
 
Oct. 26, 2020, 9 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 30.0 ppb (28) 0.1 ppb (2) 26.6 μg/m3 (25) N/A 28.0
 
Oct. 26, 2020, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) 3.3 μg/m3 (4) N/A 31.0
 
Oct. 26, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.1 μg/m3 (38) N/A 38.0
 
Oct. 26, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 4.9 μg/m3 (5) N/A 5.0
 
Oct. 26, 2020, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 29.9 μg/m3 (28) N/A 28.0
 
Oct. 26, 2020, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 12.7 μg/m3 (12) N/A 12.0
 
Oct. 26, 2020, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) 15.3 μg/m3 (15) N/A 27.0
 
Oct. 26, 2020, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (25) 0.1 ppb (2) 9.0 μg/m3 (9) N/A 25.0
 
Oct. 26, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) 14.3 μg/m3 (14) N/A 27.0
 
Oct. 26, 2020, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (25) 0.1 ppb (2) 15.2 μg/m3 (15) N/A 25.0
 
Oct. 26, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) 0.0 ppb (0) 4.1 μg/m3 (4) N/A 26.0
 
Oct. 26, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.0 ppb (0) 13.0 μg/m3 (13) N/A 29.0
 
Oct. 26, 2020, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) 2.3 μg/m3 (3) N/A 27.0
 
Oct. 26, 2020, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.1 ppb (2) 0.1 μg/m3 (1) N/A 28.0
 
Oct. 26, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.1 ppb (2) 6.6 μg/m3 (7) N/A 29.0
 
Oct. 26, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) 0.1 ppb (2) 5.8 μg/m3 (6) N/A 30.0
 
Oct. 26, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) 0.1 ppb (2) 10.4 μg/m3 (10) N/A 30.0
 
Oct. 26, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) 1.5 μg/m3 (2) N/A 27.0
 
Oct. 26, 2020, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) 10.4 μg/m3 (10) N/A 27.0
 
Oct. 26, 2020, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) 4.9 μg/m3 (5) N/A 31.0
 
Oct. 26, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) 5.9 μg/m3 (6) N/A 31.0
 
Oct. 26, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) 6.2 μg/m3 (6) N/A 31.0
 
Oct. 25, 2020, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (32) 0.1 ppb (2) 13.9 μg/m3 (13) N/A 32.0
 
Oct. 25, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.1 ppb (2) 7.1 μg/m3 (7) N/A 32.0
 
Oct. 25, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) 13.4 μg/m3 (13) N/A 31.0
 
Oct. 25, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (30) 0.1 ppb (2) 14.5 μg/m3 (14) N/A 30.0
 
Oct. 25, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.1 ppb (2) 27.4 μg/m3 (26) N/A 29.0
 
Oct. 25, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) 0.1 ppb (2) 12.0 μg/m3 (12) N/A 28.0
 
Oct. 25, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) 14.6 μg/m3 (14) N/A 26.0
 
Oct. 25, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) 16.1 μg/m3 (15) N/A 26.0
 
Oct. 25, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) 5.7 μg/m3 (6) N/A 26.0
 
Oct. 25, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) 12.0 μg/m3 (12) N/A 26.0
 
Oct. 25, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.1 ppb (2) 5.4 μg/m3 (5) N/A 25.0
 
Oct. 25, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) 0.1 ppb (2) 0.6 μg/m3 (1) N/A 25.0
 
Oct. 25, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (23) 0.1 ppb (2) 2.7 μg/m3 (3) N/A 23.0
 
Oct. 25, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (22) 0.1 ppb (2) 4.0 μg/m3 (4) N/A 22.0
 
Oct. 25, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) 13.7 μg/m3 (13) N/A 20.0
 
Oct. 25, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) 0.0 ppb (0) 25.5 μg/m3 (24) N/A 24.0
 
Oct. 25, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) 10.0 μg/m3 (10) N/A 18.0
 
Oct. 25, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (16) 0.1 ppb (2) 5.3 μg/m3 (5) N/A 16.0
 
Oct. 25, 2020, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (14) 0.1 ppb (2) 24.1 μg/m3 (23) N/A 23.0
 
Oct. 25, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (16) 0.1 ppb (2) 26.3 μg/m3 (25) N/A 25.0
 
Oct. 25, 2020, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) 0.1 ppb (2) 31.5 μg/m3 (30) N/A 30.0
 
Oct. 25, 2020, 2 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 14.0 ppb (13) 0.1 ppb (2) 39.2 μg/m3 (37) N/A 37.0
 
Oct. 25, 2020, 1 a.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) 5.0 ppb (5) 0.2 ppb (3) 51.0 μg/m3 (48) N/A 48.0
 
Oct. 25, 2020, midnight N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 9.0 ppb (9) 0.2 ppb (3) 50.2 μg/m3 (47) N/A 47.0
 
Oct. 24, 2020, 11 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 18.0 ppb (17) 0.1 ppb (2) 42.9 μg/m3 (40) N/A 40.0
 
Oct. 24, 2020, 10 p.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 22.0 ppb (21) 0.2 ppb (3) 48.9 μg/m3 (46) N/A 46.0
 
Oct. 24, 2020, 9 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 24.0 ppb (23) 0.2 ppb (3) 42.8 μg/m3 (40) N/A 40.0
 
Oct. 24, 2020, 8 p.m. N/A N/A N/A 10.0 ppb (10) N/A 1.0 ppb (2) 24.0 ppb (23) 0.2 ppb (3) 39.5 μg/m3 (37) N/A 37.0
 
Oct. 24, 2020, 7 p.m. N/A N/A N/A 15.0 ppb (15) N/A 1.0 ppb (2) 19.0 ppb (18) 0.3 ppb (4) 63.7 μg/m3 (56) N/A 56.0
 
Oct. 24, 2020, 6 p.m. N/A N/A N/A 17.0 ppb (17) N/A 1.0 ppb (2) 15.0 ppb (14) 0.3 ppb (4) 35.2 μg/m3 (33) N/A 33.0
 
Oct. 24, 2020, 5 p.m. N/A N/A N/A 21.0 ppb (20) N/A 1.0 ppb (2) 12.0 ppb (12) 0.4 ppb (5) 29.7 μg/m3 (28) N/A 28.0
 
Oct. 24, 2020, 4 p.m. N/A N/A N/A 28.0 ppb (27) N/A 2.0 ppb (3) 7.0 ppb (7) 0.7 ppb (8) 67.2 μg/m3 (58) N/A 58.0
 
Oct. 24, 2020, 3 p.m. N/A N/A N/A 26.0 ppb (25) N/A 1.0 ppb (2) 4.0 ppb (4) 0.5 ppb (6) 55.9 μg/m3 (52) N/A 52.0
 
Oct. 24, 2020, 2 p.m. N/A N/A N/A 20.0 ppb (19) N/A 1.0 ppb (2) 2.0 ppb (2) 0.5 ppb (6) 45.1 μg/m3 (42) N/A 42.0
 
Oct. 24, 2020, 1 p.m. N/A N/A N/A 21.0 ppb (20) N/A 1.0 ppb (2) 1.0 ppb (1) 0.4 ppb (5) 31.4 μg/m3 (30) N/A 30.0
 
Oct. 24, 2020, noon N/A N/A N/A 21.0 ppb (20) N/A 1.0 ppb (2) 1.0 ppb (1) 0.4 ppb (5) 19.0 μg/m3 (18) N/A 20.0
 
Oct. 24, 2020, 11 a.m. N/A N/A N/A 21.0 ppb (20) N/A 1.0 ppb (2) 1.0 ppb (1) 0.3 ppb (4) 26.1 μg/m3 (25) N/A 25.0
 
Oct. 24, 2020, 10 a.m. N/A N/A N/A 21.0 ppb (20) N/A 1.0 ppb (2) 1.0 ppb (1) 0.4 ppb (5) 19.2 μg/m3 (18) N/A 20.0
 
Oct. 24, 2020, 9 a.m. N/A N/A N/A 22.0 ppb (21) N/A 1.0 ppb (2) 1.0 ppb (1) 0.4 ppb (5) 18.6 μg/m3 (18) N/A 21.0
 
Oct. 24, 2020, 8 a.m. N/A N/A N/A 22.0 ppb (21) N/A 1.0 ppb (2) 1.0 ppb (1) 0.4 ppb (5) 21.3 μg/m3 (20) N/A 21.0
 
Oct. 24, 2020, 7 a.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) 1.0 ppb (1) 0.5 ppb (6) 26.5 μg/m3 (25) N/A 25.0
 
Oct. 24, 2020, 6 a.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) 2.0 ppb (2) 0.5 ppb (6) 21.8 μg/m3 (21) N/A 22.0
 
Oct. 24, 2020, 5 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 3.0 ppb (3) 0.5 ppb (6) 20.7 μg/m3 (20) N/A 21.0
 
Oct. 24, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (4) 16.3 μg/m3 (16) N/A 16.0
 
Oct. 24, 2020, 3 a.m. N/A N/A N/A 24.0 ppb (23) N/A 0.0 ppb (0) 1.0 ppb (1) 0.4 ppb (5) 20.9 μg/m3 (20) N/A 23.0
 
Oct. 24, 2020, 2 a.m. N/A N/A N/A 24.0 ppb (23) N/A 0.0 ppb (0) 2.0 ppb (2) 0.7 ppb (8) 24.8 μg/m3 (23) N/A 23.0
 
Oct. 24, 2020, 1 a.m. N/A N/A N/A 24.0 ppb (23) N/A 0.0 ppb (0) 3.0 ppb (3) 0.9 ppb (11) 26.3 μg/m3 (25) N/A 25.0
 
Oct. 24, 2020, midnight N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 13.0 ppb (13) 0.2 ppb (3) 15.2 μg/m3 (15) N/A 15.0
 
Oct. 23, 2020, 11 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) 13.5 μg/m3 (13) N/A 18.0
 
Oct. 23, 2020, 10 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 18.0 ppb (17) 0.1 ppb (2) 24.4 μg/m3 (23) N/A 23.0
 
Oct. 23, 2020, 9 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (19) 0.1 ppb (2) 22.0 μg/m3 (21) N/A 21.0
 
Oct. 23, 2020, 8 p.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (19) 0.1 ppb (2) 33.3 μg/m3 (31) N/A 31.0
 
Oct. 23, 2020, 7 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) 23.8 μg/m3 (23) N/A 23.0
 
Oct. 23, 2020, 6 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) 20.6 μg/m3 (20) N/A 20.0
 
Oct. 23, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) 21.6 μg/m3 (20) N/A 20.0
 
Oct. 23, 2020, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (21) 0.1 ppb (2) 18.6 μg/m3 (18) N/A 21.0
 
Oct. 23, 2020, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) 16.3 μg/m3 (16) N/A 20.0
 
Oct. 23, 2020, 2 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) 16.2 μg/m3 (15) N/A 18.0
 
Oct. 23, 2020, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 18.0 ppb (17) 0.1 ppb (2) 13.9 μg/m3 (13) N/A 17.0
 
Oct. 23, 2020, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) 13.3 μg/m3 (13) N/A 20.0
 
Oct. 23, 2020, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (21) 0.1 ppb (2) 19.2 μg/m3 (18) N/A 21.0
 
Oct. 23, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (23) 0.1 ppb (2) 6.9 μg/m3 (7) N/A 23.0
 
Oct. 23, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.1 ppb (2) 8.6 μg/m3 (8) N/A 25.0
 
Oct. 23, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.1 ppb (2) 6.4 μg/m3 (6) N/A 25.0
 
Oct. 23, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.1 ppb (2) 10.2 μg/m3 (10) N/A 24.0
 
Oct. 23, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.1 ppb (2) 10.6 μg/m3 (10) N/A 23.0
 
Oct. 23, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (23) 0.1 ppb (2) 9.8 μg/m3 (10) N/A 23.0
 
Oct. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.1 ppb (2) 7.2 μg/m3 (7) N/A 22.0
 
Oct. 23, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (21) 0.1 ppb (2) 5.0 μg/m3 (5) N/A 21.0
 
Oct. 23, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) 7.7 μg/m3 (8) N/A 20.0
 
Oct. 23, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) 4.6 μg/m3 (5) N/A 18.0
 
Oct. 23, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (16) 0.1 ppb (2) 2.4 μg/m3 (3) N/A 16.0
 
Oct. 22, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 16.0 ppb (15) 0.1 ppb (2) 19.4 μg/m3 (18) N/A 18.0
 
Oct. 22, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (19) 0.1 ppb (2) 30.6 μg/m3 (29) N/A 29.0
 
Oct. 22, 2020, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (17) 0.1 ppb (2) 16.6 μg/m3 (16) N/A 17.0
 
Oct. 22, 2020, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) 20.4 μg/m3 (19) N/A 19.0
 
Oct. 22, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) 17.4 μg/m3 (17) N/A 18.0
 
Oct. 22, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (16) 0.1 ppb (2) 17.0 μg/m3 (16) N/A 16.0
 
Oct. 22, 2020, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (15) 0.1 ppb (2) 17.6 μg/m3 (17) N/A 17.0
 
Oct. 22, 2020, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 13.0 ppb (13) 0.1 ppb (2) 12.7 μg/m3 (12) N/A 13.0
 
Oct. 22, 2020, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (11) 0.1 ppb (2) 14.7 μg/m3 (14) N/A 14.0
 
Oct. 22, 2020, 2 p.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 9.0 ppb (9) 0.1 ppb (2) 19.0 μg/m3 (18) N/A 18.0
 
Oct. 22, 2020, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 7.0 ppb (7) 0.1 ppb (2) 24.5 μg/m3 (23) N/A 23.0
 
Oct. 22, 2020, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 8.0 ppb (8) 0.1 ppb (2) 31.1 μg/m3 (29) N/A 29.0
 
Oct. 22, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 9.0 ppb (9) 0.2 ppb (3) 40.4 μg/m3 (38) N/A 38.0
 
Oct. 22, 2020, 10 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 5.0 ppb (5) 0.3 ppb (4) 59.9 μg/m3 (54) N/A 54.0
 
Oct. 22, 2020, 9 a.m. N/A N/A N/A 25.0 ppb (24) N/A 1.0 ppb (2) 0.0 ppb (0) 0.6 ppb (7) 52.1 μg/m3 (49) N/A 49.0
 
Oct. 22, 2020, 8 a.m. N/A N/A N/A 24.0 ppb (23) N/A 1.0 ppb (2) 1.0 ppb (1) 0.5 ppb (6) 46.0 μg/m3 (43) N/A 43.0
 
Oct. 22, 2020, 7 a.m. N/A N/A N/A 25.0 ppb (24) N/A 1.0 ppb (2) 1.0 ppb (1) 0.7 ppb (8) 57.1 μg/m3 (53) N/A 53.0
 
Oct. 22, 2020, 6 a.m. N/A N/A N/A 27.0 ppb (26) N/A 1.0 ppb (2) 1.0 ppb (1) 0.8 ppb (10) 60.9 μg/m3 (54) N/A 54.0